Today's Message Index:
----------------------
1. 05:35 AM - Re: John Williamson (Kirkds)
2. 06:47 AM - harmonics (Ted Cowan)
3. 06:52 AM - engine offset mount question (Jimmy Young)
4. 07:22 AM - Re: harmonics (lucien)
5. 07:29 AM - Re: engine offset mount question (lucien)
6. 09:13 AM - MIG welding aluminum (Mike Welch)
7. 09:19 AM - Re: harmonics (JetPilot)
8. 09:23 AM - MIG welding aluminum (Mike Welch)
9. 10:10 AM - Re: MIG welding aluminum (frank.goodnight)
10. 10:11 AM - Re: Re: harmonics (Mike Welch)
11. 10:11 AM - Re: harmonics (Kirby, Dennis CTR USAF AFMC MDA/AL)
12. 10:11 AM - Re: MIG welding aluminum (Tom Longo)
13. 10:14 AM - Re: MIG welding aluminum (Dennis Souder)
14. 10:27 AM - Re: MIG welding aluminum (william sullivan)
15. 10:28 AM - Re: MIG welding aluminum (Mike Welch)
16. 10:43 AM - Re: MIG welding aluminum (Mike Welch)
17. 10:54 AM - Re: Re: harmonics (John Hauck)
18. 11:23 AM - Re: Re: harmonics (Mike Welch)
19. 11:35 AM - Re: MIG welding aluminum (Dennis Watson)
20. 11:39 AM - Re: MIG welding aluminum (Dennis Watson)
21. 12:05 PM - Re: Re: harmonics (John Hauck)
22. 01:15 PM - Re: MIG welding aluminum (Mike Welch)
23. 01:33 PM - Re: MIG welding aluminum (frank.goodnight)
24. 02:03 PM - Re: Stits (pj.ladd)
25. 06:11 PM - Re: MIG welding aluminum (ElleryWeld@aol.com)
26. 06:41 PM - Re: MIG welding aluminum (Mike Welch)
27. 07:16 PM - Re: Re: Stits (possums)
28. 08:11 PM - Re: Re: Stits (Beauford T)
29. 08:24 PM - Re: harmonics (lucien)
30. 10:07 PM - Re: Re: Stits (Larry Cottrell)
Message 1
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| Subject: | Re: John Williamson |
NeilsenRM(at)comcast.net wrote:
> Snuffy
>
> Good to here from you again. Are you still building your Kolb? Are you still
> in Michigan? Retired yet?
>
> Do not archive
>
> Rick Neilsen
> Redrive VW powered MKIIIC
>
> ---
Thanks Rick. Haven't worked on the MarkIII for several years it's stored in the
barn but just bought a Firestar II and learning to fly it. Flies a bit different
than my old Minimax. Not as snappy on the roll axis. Visability is super
and takeoff is hoot. I'm still in the same place Columbiaville and retired now.
Stop in sometime for coffee heh? Good to hear from you also.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=238887#238887
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To answer a couple of questions: I dont have any apparent slack in the prop
to indicate a loose gear set or too much gear lash. Might be a little too
tight going around but not to the point it is grinding metal. The motor
mounts are the ones supplied by the Kolb Factory with the 912. Took the 582
ones off. My normal cruise speed for the SS is around 82/85 indicated. I
can hit 90/95 in a heartbeat. Been over a hundred a couple of times at only
about 5400 rpm. my set up and aproach is around 70 indicated with touch
down somewhere around high 40s I think. at 60 you are still pretty much
flying although you have a sink rate. My normal roll out is somewhere
between 200 to 300 feet, close to take-off roll. Once the feet are down,
speed is lost very fast so there is not a lot of roll out. If I go in slow,
break it right away, I can stop in about 150 feet without even thinking of a
nose over. I love the tall landing legs and forward sweep. Like I said, if
it didnt make that awlful noise, I would have the perfect flying machine --
although it looks a little strange! When and if the wind and rain stops, I
will get to work on those great suggestions. I will let everyone know the
results for the archieves. Ted Cowan, Slingshot 912 ul.
Message 3
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| Subject: | engine offset mount question |
I have a question regarding offsetting an engine to compensate for prop wash on
rudder. Currently it takes a lot of right rudder to roll out straight on take
off. If I have a left to right crosswind, it takes full hard right rudder to
maintain a straight track. If I have a right to left crosswind, very little rudder
is required to keep her straight. My engine is offset slightly to the left
right now. I have about 3.75" from the prop to the aileron tube on the pilot's
left side, and about 4.75" on the right. Is this set up helping the situation
or making it worse? It seems to me since the engine is behind the CG, it would
make it worse. My prop turns counter-clockwise looking at it from behind
the airplane. I do have a rudder tab on the left side, and the plane flys straight
& level with very little stick input once up. Any thoughts on this?
Thanks -
Jimmy Y
FS II, 95 hrs on the Generac V-twin
--------
Jimmy Young
FS II, Generac V-Twin
Houston TX area
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=238901#238901
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tc1917(at)bellsouth.net wrote:
> To answer a couple of questions: I dont have any apparent slack in the prop
> to indicate a loose gear set or too much gear lash. Might be a little too
> tight going around but not to the point it is grinding metal. The motor
> mounts are the ones supplied by the Kolb Factory with the 912. Took the 582
> ones off. My normal cruise speed for the SS is around 82/85 indicated. I
> can hit 90/95 in a heartbeat. Been over a hundred a couple of times at only
> about 5400 rpm. my set up and aproach is around 70 indicated with touch
> down somewhere around high 40s I think. at 60 you are still pretty much
> flying although you have a sink rate. My normal roll out is somewhere
> between 200 to 300 feet, close to take-off roll. Once the feet are down,
> speed is lost very fast so there is not a lot of roll out. If I go in slow,
> break it right away, I can stop in about 150 feet without even thinking of a
> nose over. I love the tall landing legs and forward sweep. Like I said, if
> it didnt make that awlful noise, I would have the perfect flying machine --
> although it looks a little strange! When and if the wind and rain stops, I
> will get to work on those great suggestions. I will let everyone know the
> results for the archieves. Ted Cowan, Slingshot 912 ul.
That sounds like about the same performance envelope as my titan - 95mph cruise,
60mph on final, TD about 40 with full flaps.
Have you tried a different prop type? My next attempt is going to be a powerfin
F model which judging by my spare 68" that I have left over from my 2-stroke
days, has a very different resonance to the blades than the WD.
Doubt it'll have the same speed range as the WD but it may run smoother. It's worth
a shot anyway especially if it runs smoother.
LS
--------
LS
Titan II SS
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=238904#238904
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| Subject: | Re: engine offset mount question |
Jimmy Young wrote:
> I have a question regarding offsetting an engine to compensate for prop wash
on rudder. Currently it takes a lot of right rudder to roll out straight on take
off. If I have a left to right crosswind, it takes full hard right rudder to
maintain a straight track. If I have a right to left crosswind, very little
rudder is required to keep her straight. My engine is offset slightly to the
left right now. I have about 3.75" from the prop to the aileron tube on the pilot's
left side, and about 4.75" on the right. Is this set up helping the situation
or making it worse? It seems to me since the engine is behind the CG, it
would make it worse. My prop turns counter-clockwise looking at it from behind
the airplane. I do have a rudder tab on the left side, and the plane flys straight
& level with very little stick input once up. Any thoughts on this?
>
> Thanks -
>
> Jimmy Y
> FS II, 95 hrs on the Generac V-twin
Sounds familiar. My FSII required a lot of left rudder on the takeoff roll (mine
had the 503 with the prop turning right-hand, swinging the big ol 68" WD 3 blade
on a 3.47 C box) but didn't have a lot of torque problems in the air.
Mine also didn't have any offset in the mount, but I should think that would help.
Perhaps not.
I mitigated the problem by just applying power slower especially if there was a
crosswind so the torque wouldn't overcome the rudder. By the time the tail came
up I could go to wide open without having to hold as much left rudder pressure.
Soft-field takeoffs where I held the tail down longer with back pressure on the
stick, tho, would still require the hefty left rudder until I got to flying speed.....
LS
--------
LS
Titan II SS
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=238905#238905
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| Subject: | MIG welding aluminum |
Kolb welding guys=2C
I recently had some heli-arc welding done on some aluminum for my MkIII t
urbocharger. (the intercooler and TBI "top-hat"). Although this method of
welding aluminum is the best=2C it can get real expensive!! (I found the m
ore often I went to this guy=2C the more expensive he got. (surprise=2C su
rprise!)
I talked to my local welding shop=2C and they say I can get some aluminum
MIG welding wire=2C and use straight Argon gas (not the 25%/75% CO2/Argon
mix I'm presently using for my small MIG welder)
The alum. wire and pure Argon allows one to weld "light" alum. projects..
.....they say.
Is there anyone out there that has experience with this combination=2C an
d can say whether or not it works very well? I have a lot of small aluminu
m projects that I'd do if I could weld them myself.
I have one of those 110V Lincoln wire feed welders=2C with the MIG conver
sion kit and 125 cu.ft. gas bottle. This set up is perfect for the home we
lder guy or gal. You can weld ALL kinds of things around the house. Nice
set up. If I could switch steel wire to aluminum=2C that would be awesome!
!
Mike Welch
MkIII
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Ted,
What kind of brakes did you put on your Slingshot ? I have the Obrien hydraulic
brakes, they are wonderful reliable, I have not had to touch them in over 2
years, they would be perfect on a lighter plane like a firestar, but I just need
more stopping power... I could not induce a nose over with the brakes even
if I tried. There have been a couple times with long taxiing on pavement that
I have overheated them and had them fade completely. It really sucks having
to shut the engine down on a taxiway to stop.
Mike
--------
"NO FEAR" - If you have no fear you did not go as fast as you could
have !!!
Kolb MK-III Xtra, 912-S
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=238927#238927
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| Subject: | MIG welding aluminum |
Kolb welding guys=2C
I recently had some heli-arc welding done on some aluminum for my MkIII t
urbocharger. (the intercooler and TBI "top-hat"). Although this method of
welding aluminum is the best=2C it can get real expensive!! (I found the m
ore often I went to this guy=2C the more expensive he got. (surprise=2C su
rprise!)
I talked to my local welding shop=2C and they say I can get some aluminum
MIG welding wire=2C and use straight Argon gas (not the 25%/75% CO2/Argon
mix I'm presently using for my small MIG welder)
The alum. wire and pure Argon allows one to weld "light" alum. projects..
.....they say.
Is there anyone out there that has experience with this combination=2C an
d can say whether or not it works very well? I have a lot of small aluminu
m projects that I'd do if I could weld them myself.
I have one of those 110V Lincoln wire feed welders=2C with the MIG conver
sion kit and 125 cu.ft. gas bottle. This set up is perfect for the home we
lder guy or gal. You can weld ALL kinds of things around the house. Nice
set up. If I could switch steel wire to aluminum=2C that would be awesome!
!
Mike Welch
MkIII
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| Subject: | Re: MIG welding aluminum |
Mike I [think ] you can get a spool gun to go with you welder that
uses flux core wire.and you do not have to use any gas. this may be
bad info .But your welding suply store can tell you for sure.
Frank Goodnight
Firestar 2
On Apr 13, 2009, at 10:08 AM, Mike Welch wrote:
> Kolb welding guys,
>
> I recently had some heli-arc welding done on some aluminum for my
> MkIII turbocharger. (the intercooler and TBI "top-hat"). Although
> this method of welding aluminum is the best, it can get real
> expensive!! (I found the more often I went to this guy, the more
> expensive he got. (surprise, surprise!)
>
> I talked to my local welding shop, and they say I can get some
> aluminum MIG welding wire, and use straight Argon gas (not the 25%/
> 75% CO2/Argon mix I'm presently using for my small MIG welder)
> The alum. wire and pure Argon allows one to weld "light" alum.
> projects.......they say.
>
> Is there anyone out there that has experience with this
> combination, and can say whether or not it works very well? I have
> a lot of small aluminum projects that I'd do if I could weld them
> myself.
>
> I have one of those 110V Lincoln wire feed welders, with the MIG
> conversion kit and 125 cu.ft. gas bottle. This set up is perfect
> for the home welder guy or gal. You can weld ALL kinds of things
> around the house. Nice set up. If I could switch steel wire to
> aluminum, that would be awesome!!
>
> Mike Welch
> MkIII
>
>
> Quick access to your favorite MSN content and Windows Live with
> Internet Explorer 8. Download FREE now!
>
>
Message 10
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>I just need more stopping power... >
> Mike
All=2C
First=2C my apologies for the double send of the MIG aluminum reuqest. S
tupid Highesnet choked=2C and I pushed resend... ( I miss DSL)
Mike=2C
Doesn't your brake reservior/master cylinders have options for various mo
unting holes. It is likely the O'Brien brakes may not be the problem=2C ju
st their mounting geometry.
By moving the top mount closer to the pivot point=2C you should be able t
o exert more hydraulic pressure. Just a thought.....
How about a couple of close-up photos=2C so we can see what your options
are??
Mike Welch
MkIII
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"lucien" wrote: << ... Fatigue, however, due to the increased thrumming
I already know is an issue tho I may eventually get used to that too. >>
Lucien -
Although you've heard my story about fatigue failures already, I think
it bears repeating, for the benefit of those on this Kolb List who might
also benefit.
I experienced a similar harmonic problem in the first year I began
flying my Kolb. I built my plane with a Verner engine (made in the
Czech Republic - a 1400cc air cooled, 80 hp, twin cylinder boxer
engine). Like you are experiencing, I too was getting some sort of
harmonic whose source I could not identify. Engine ran smooth, blades
tracked exactly, no severe vibration. But consistently, after every 6
hours of operation, I was discovering BROKEN PROP BOLTS on my
post-flight inspection! Could not pinpoint specifically where the
harmonic was originating - was most likely just my particular
airframe/engine/prop combination. I did not want to begin experimenting
with different propellers to see if that would solve my problem. Bottom
line for me was, after three times of discovering broken prop bolts, I
finally ditched the Verner and bought a used 912 to replace it. I
never discovered what was causing the bolts to break. But I am happy
with my 912 - have not had any reoccurrence of the damaging harmonic.
And so my advice would be: Don't ignore those harmonics - you don't
wanna just "get used" to it! Good for you (and you too, Ted C.), for
your tenacious efforts in trying to discover and eliminate the source of
your harmonic thrumming! Eventually, those low-frequency harmonics will
take their toll on some part of your airplane which could result is
something else failing. As my experience shows, these things do happen.
Good luck in finding your gremlin(s) ...
Dennis Kirby
Mark-3, 912ul
New Mexico
Do not archive
Message 12
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| Subject: | MIG welding aluminum |
Yes it works fine, the best type of gun for aluminum is one that pulls
instead of pushes. I have that set up with a gun that pulls (spool on gun)
-----Original Message-----
From: owner-kolb-list-server@matronics.com
[mailto:owner-kolb-list-server@matronics.com]On Behalf Of Mike Welch
Sent: Monday, April 13, 2009 11:50 AM
To: kolb-list@matronics.com
Subject: Kolb-List: MIG welding aluminum
Kolb welding guys,
I recently had some heli-arc welding done on some aluminum for my MkIII
turbocharger. (the intercooler and TBI "top-hat"). Although this method of
welding aluminum is the best, it can get real expensive!! (I found the more
often I went to this guy, the more expensive he got. (surprise, surprise!)
I talked to my local welding shop, and they say I can get some aluminum
MIG welding wire, and use straight Argon gas (not the 25%/75% CO2/Argon mix
I'm presently using for my small MIG welder)
The alum. wire and pure Argon allows one to weld "light" alum.
projects.......they say.
Is there anyone out there that has experience with this combination, and
can say whether or not it works very well? I have a lot of small aluminum
projects that I'd do if I could weld them myself.
I have one of those 110V Lincoln wire feed welders, with the MIG
conversion kit and 125 cu.ft. gas bottle. This set up is perfect for the
home welder guy or gal. You can weld ALL kinds of things around the house.
Nice set up. If I could switch steel wire to aluminum, that would be
awesome!!
Mike Welch
MkIII
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Message 13
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| Subject: | MIG welding aluminum |
Mike,
Theoretically you can use your mig for aluminum, but the big problem is the
alum wire will jam in the welding cable very easily because the reel in your
welder and needs to push the wire all the way through your welding cable,
and . because the alum wire is not very stiff - it jams.
You probably would need a spool gun which has a small roll of aluminum right
on the welding gun. Don't know if they make a spool gun for your welder or
not.
Dennis
_____
From: owner-kolb-list-server@matronics.com
[mailto:owner-kolb-list-server@matronics.com] On Behalf Of Mike Welch
Sent: Monday, April 13, 2009 11:50 AM
Subject: Kolb-List: MIG welding aluminum
Kolb welding guys,
I recently had some heli-arc welding done on some aluminum for my MkIII
turbocharger. (the intercooler and TBI "top-hat"). Although this method of
welding aluminum is the best, it can get real expensive!! (I found the more
often I went to this guy, the more expensive he got. (surprise, surprise!)
I talked to my local welding shop, and they say I can get some aluminum
MIG welding wire, and use straight Argon gas (not the 25%/75% CO2/Argon mix
I'm presently using for my small MIG welder)
The alum. wire and pure Argon allows one to weld "light" alum.
projects.......they say.
Is there anyone out there that has experience with this combination, and
can say whether or not it works very well? I have a lot of small aluminum
projects that I'd do if I could weld them myself.
I have one of those 110V Lincoln wire feed welders, with the MIG
conversion kit and 125 cu.ft. gas bottle. This set up is perfect for the
home welder guy or gal. You can weld ALL kinds of things around the house.
Nice set up. If I could switch steel wire to aluminum, that would be
awesome!!
Mike Welch
MkIII
_____
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Explorer 8. Download
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Message 14
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| Subject: | Re: MIG welding aluminum |
- Mike:- I have one of those Lincoln welders, but use flux core wire to
weld steel.- I used to weld aluminum with a "spool gun", where the roll
of wire sits above your hand.- I was told that a lot of the MIG's with th
e "whip feed" will not push the wire, and it will bind.- See if you can g
et a roll to borrow (make sure you have the right tip in it) and see if you
rs will feed before you pick up the argon.- Also, use a stainless steel w
ire brush or wheel to clean the oxide off aluminum before welding.- You c
an weld heavy stuff, but one pass at a time.- If it works, practice on a
lot of scrap.- You may also have to change the filter setting or lens num
ber in the helmet.- Be careful- if the aluminum gets too hot on multiple
passes, it may collapse.- It stays hot for quite a while, and the heat sp
reads through the material.
-
-------------------------
------------- Good luck
-------------------------
-------------------- Bill Sullivan
-------------------------
-------------------- Windsor Locks,
Ct.
-------------------------
-------------------- FS 447
-
Message 15
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| Subject: | MIG welding aluminum |
Tom and Frank=2C
Thanks for the replies. Frank=2C I wasn't concerned so much as using flu
xless wire=2C as I was wondering how good a weld a guy could make. Since I
have to have Argon gas=2C anyway=2C so for me to weld aluminum=2C I'd only
have to change the wire roll.
It looks like both of you are on the same page=2C though=2C referring to
the spool/gun.
I'll check this device out.
Thanks=2C Mike W
From: tlongo@tampabay.rr.com
Subject: RE: Kolb-List: MIG welding aluminum
Yes it works fine=2C the best type of gun for aluminum is one that pulls in
stead of pushes. I have that set up with a gun that pulls (spool on gun)
-----Original Message-----
From: owner-kolb-list-server@matronics.com [mailto:owner-kolb-list-server@m
atronics.com]On Behalf Of Mike Welch
Sent: Monday=2C April 13=2C 2009 11:50 AM
Subject: Kolb-List: MIG welding aluminum
Kolb welding guys=2C
I recently had some heli-arc welding done on some aluminum for my MkIII t
urbocharger. (the intercooler and TBI "top-hat"). Although this method of
welding aluminum is the best=2C it can get real expensive!! (I found the m
ore often I went to this guy=2C the more expensive he got. (surprise=2C su
rprise!)
I talked to my local welding shop=2C and they say I can get some aluminum
MIG welding wire=2C and use straight Argon gas (not the 25%/75% CO2/Argon
mix I'm presently using for my small MIG welder)
The alum. wire and pure Argon allows one to weld "light" alum. projects..
.....they say.
Is there anyone out there that has experience with this combination=2C an
d can say whether or not it works very well? I have a lot of small aluminu
m projects that I'd do if I could weld them myself.
I have one of those 110V Lincoln wire feed welders=2C with the MIG conver
sion kit and 125 cu.ft. gas bottle. This set up is perfect for the home we
lder guy or gal. You can weld ALL kinds of things around the house. Nice
set up. If I could switch steel wire to aluminum=2C that would be awesome!
!
Mike Welch
MkIII
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Message 16
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| Subject: | MIG welding aluminum |
Dennis=2C
Ah ha!! Now I think I understand something a little better. I haven't c
hecked out the spool/gun idea yet=2C but now I understand why the conversio
n kit for my welder has a new
cable.
When I talked to the guy at Airgas=2C he said the "MIG welding aluminum k
it" has:
A) small aluminum wire roll
B) new feed cable with smooth teflon lining
He didn't exactly know why the new cable came with the kit. He wasn't fa
miliar with the "softer" aluminum wire that may scrunch up. I asked him if
I could just use my present unlined cable=2C and he said he didn't know wh
y not. (now=2C I realize why not)
One thing he did say is that you HAVE to use straight Argon gas=2C no CO2
/Argon mix=2C like I get away with for steel welding.
I think I'll take your advice=2C Dennis=2C toward the softer alum. wire
=2C and go for the complete kit. I'll check and see if there is one of tho
se spool/guns available.
Thanks guys=2C
Mike Welch
From: flykolb@pa.net
Subject: RE: Kolb-List: MIG welding aluminum
Mike=2C
Theoretically you can use your mig for aluminum=2C but the big problem is t
he alum wire will jam in the welding cable very easily because the reel in
your welder and needs to push the wire all the way through your welding cab
le=2C and =85 because the alum wire is not very stiff ' it jams.
You probably would need a spool gun which has a small roll of aluminum righ
t on the welding gun. Don=92t know if they make a spool gun for your welde
r or not.
Dennis
From: owner-kolb-list-server@matronics.com [mailto:owner-kolb-list-server@m
atronics.com] On Behalf Of Mike Welch
Sent: Monday=2C April 13=2C 2009 11:50 AM
Subject: Kolb-List: MIG welding aluminum
Kolb welding guys=2C
I recently had some heli-arc welding done on some aluminum for my MkIII t
urbocharger. (the intercooler and TBI "top-hat"). Although this method of
welding aluminum is the best=2C it can get real expensive!! (I found the m
ore often I went to this guy=2C the more expensive he got. (surprise=2C su
rprise!)
I talked to my local welding shop=2C and they say I can get some aluminum
MIG welding wire=2C and use straight Argon gas (not the 25%/75% CO2/Argon
mix I'm presently using for my small MIG welder)
The alum. wire and pure Argon allows one to weld "light" alum. projects..
.....they say.
Is there anyone out there that has experience with this combination=2C an
d can say whether or not it works very well? I have a lot of small aluminu
m projects that I'd do if I could weld them myself.
I have one of those 110V Lincoln wire feed welders=2C with the MIG conver
sion kit and 125 cu.ft. gas bottle. This set up is perfect for the home we
lder guy or gal. You can weld ALL kinds of things around the house. Nice
set up. If I could switch steel wire to aluminum=2C that would be awesome!
!
Mike Welch
MkIII
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The O'Brien brakes do not have sufficient capacity for a 1,000 lb/100 hp ai
rplane. They were designed for light ULs. Not sure what their max capacit
y is, but it is no where near the max gross of a MKIII.
Same goes for the MATCO UL brakes with 5/8" axles. However, the brakes hav
e a max capacity of 600 lbs. Little 5/8" ball bearings do not do a good jo
b of carrying heavy loads for long. Some folks go with dual calipers and g
et them to stop satisfactorily, but you are still flying with a wheel that
is not strong enough for the job.
I used 5/8" MATCO's for a long time, then upgraded to a 3/4" axle with tape
r roller bearings. I can't remember the designation or their max capacity
off the top of my head, but it is about 1,000 or 1,200 lbs or more. Now I
have the capability to properly adjust bearing load, something you can not
do with a caged ball bearing.
I usually opt to go a little over the requirement rather than below it. Ma
kes my cross country flying much more enjoyable not to be bothered with pre
ventable problems on the road.
john h
mkIII
Doesn't your brake reservior/master cylinders have options for various m
ounting holes. It is likely the O'Brien brakes may not be the problem, jus
t their mounting geometry.
By moving the top mount closer to the pivot point, you should be able to
exert more hydraulic pressure. Just a thought.....
How about a couple of close-up photos, so we can see what your options ar
e??
Mike Welch
MkIII
Message 18
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John & TNK Co=2C
If Mike's brakes are not up to the task=2C does TNK sell a more appropria
te=2C larger axle/wheel/brake=2C for the heavier MkIIIs and Slingshots?
Since you went to a larger 3/4" axle=2C did you opt for a larger/stronger
master cylinder? I didn't see where you mention your present brake master
cylinder manufacturer.
I usually go for the "extra heavy duty" version of something=2C too. It
often proves it was worth it.
Mike Welch
From: jhauck@elmore.rr.com
Subject: Re: Kolb-List: Re: harmonics
The O'Brien brakes do not have sufficient capacity for a 1=2C000 lb/100 hp
airplane. They were designed for light ULs. Not sure what their max capac
ity is=2C but it is no where near the max gross of a MKIII.
Same goes for the MATCO UL brakes with 5/8" axles. However=2C the brakes h
ave a max capacity of 600 lbs. Little 5/8" ball bearings do not do a good
job of carrying heavy loads for long. Some folks go with dual calipers and
get them to stop satisfactorily=2C but you are still flying with a wheel t
hat is not strong enough for the job.
I used 5/8" MATCO's for a long time=2C then upgraded to a 3/4" axle with ta
per roller bearings. I can't remember the designation or their max capacit
y off the top of my head=2C but it is about 1=2C000 or 1=2C200 lbs or more.
Now I have the capability to properly adjust bearing load=2C something yo
u can not do with a caged ball bearing.
I usually opt to go a little over the requirement rather than below it. Ma
kes my cross country flying much more enjoyable not to be bothered with pre
ventable problems on the road.
john h
mkIII
Doesn't your brake reservior/master cylinders have options for various m
ounting holes. It is likely the O'Brien brakes may not be the problem=2C j
ust their mounting geometry.
By moving the top mount closer to the pivot point=2C you should be able t
o exert more hydraulic pressure. Just a thought.....
How about a couple of close-up photos=2C so we can see what your options
are??
Mike Welch
MkIII
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Message 19
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| Subject: | Re: MIG welding aluminum |
Mike,
I probably have the same welder (WP-125) and my plan was to do lite
aluminum also. I bought the MIG conversion, argon tank, aluminum wire,
then found out that you also have to have a new non metallic liner in
the cable that feeds the wire along with some other stuff, couldn't find
the liner or "other stuff" so I have never been able to try it. The
liner is needed to prevent the wire from binding and also to prevent
contamination of the wire. I think the wire feed wheel is the "other
stuff". Another way to go is to get a handle that has the wire spool
attached which eliminates the wire having to go through the long cable.
Or you could buy your own AC/DC output TIG welder for a little over
$2000.00 ---- It must be AC output or you cannot do aluminum.
My wish list is too long.
V/R,
Dennis in MD.
----- Original Message -----
From: Mike Welch
To: kolb-list@matronics.com
Sent: Monday, April 13, 2009 11:49 AM
Subject: Kolb-List: MIG welding aluminum
Kolb welding guys,
I recently had some heli-arc welding done on some aluminum for my
MkIII turbocharger. (the intercooler and TBI "top-hat"). Although this
method of welding aluminum is the best, it can get real expensive!! (I
found the more often I went to this guy, the more expensive he got.
(surprise, surprise!)
I talked to my local welding shop, and they say I can get some
aluminum MIG welding wire, and use straight Argon gas (not the 25%/75%
CO2/Argon mix I'm presently using for my small MIG welder)
The alum. wire and pure Argon allows one to weld "light" alum.
projects.......they say.
Is there anyone out there that has experience with this combination,
and can say whether or not it works very well? I have a lot of small
aluminum projects that I'd do if I could weld them myself.
I have one of those 110V Lincoln wire feed welders, with the MIG
conversion kit and 125 cu.ft. gas bottle. This set up is perfect for
the home welder guy or gal. You can weld ALL kinds of things around the
house. Nice set up. If I could switch steel wire to aluminum, that
would be awesome!!
Mike Welch
MkIII
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| Subject: | Re: MIG welding aluminum |
Sorry for the late response, should have read ahead, looks like you have
the info.
Dennis in MD.
----- Original Message -----
From: Mike Welch
To: kolb-list@matronics.com
Sent: Monday, April 13, 2009 11:49 AM
Subject: Kolb-List: MIG welding aluminum
Kolb welding guys,
I recently had some heli-arc welding done on some aluminum for my
MkIII turbocharger. (the intercooler and TBI "top-hat"). Although this
method of welding aluminum is the best, it can get real expensive!! (I
found the more often I went to this guy, the more expensive he got.
(surprise, surprise!)
I talked to my local welding shop, and they say I can get some
aluminum MIG welding wire, and use straight Argon gas (not the 25%/75%
CO2/Argon mix I'm presently using for my small MIG welder)
The alum. wire and pure Argon allows one to weld "light" alum.
projects.......they say.
Is there anyone out there that has experience with this combination,
and can say whether or not it works very well? I have a lot of small
aluminum projects that I'd do if I could weld them myself.
I have one of those 110V Lincoln wire feed welders, with the MIG
conversion kit and 125 cu.ft. gas bottle. This set up is perfect for
the home welder guy or gal. You can weld ALL kinds of things around the
house. Nice set up. If I could switch steel wire to aluminum, that
would be awesome!!
Mike Welch
MkIII
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I'll bet TNK can supply any part required. The lighter brake is what comes
standard with the kit.
I use the same master cylinder I had with the UL Matco's.
I stuck with MATCO. They had what I wanted.
john h
MKIII
If Mike's brakes are not up to the task, does TNK sell a more appropri
ate, larger axle/wheel/brake, for the heavier MkIIIs and Slingshots?
Since you went to a larger 3/4" axle, did you opt for a larger/stronger
master cylinder? I didn't see where you mention your present brake master
cylinder manufacturer.
Mike Welch
Message 22
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| Subject: | MIG welding aluminum |
Hi Dennis Watson=2C
Your welder is the newer version of mine. I have the 115V Lincoln "Weld
Pak 100". Here's what I know=2C up to this point=3B
This is a dynomite welder for all the medium to small steel welding proje
cts I do. I bought the K610-1 conversion kit=2C which turns it into a genu
ine MIG welder=2C plus I had to buy a decent size gas tank. I'm not sure i
t makes it all that much better. Maybe a little. Heck of a set up for aro
und the shop!!
I haven't found anyone who sells a spool/gun that fits my small welder.
However=2C I did find a product brochure that says to convert my Weld Pak 1
00 to weld aluminum=2C I need the additional K664-2 kit (along with the gas
kit above K610-1). This kit has the smooth lined cable=2C to keep it from
scrunching up.
A welding supply store sells the K664-2 kit on eBay for $65=2C incl s/h.
(The first kit K610-1 cost me about $135 or so. This kit contained the ga
uges=2C hose=2C and some misc parts to convert my welder to a MIG welder.)
So=2C I guess I'll go ahead and buy the aluminum conversion kit=2C and se
e how it does.
BTW. According to the Airgas guy=2C he said I don't need a darker lens f
or my helmet=2C like a TIG welder would need.
Thanks to all for your help=2C
Mike Welch
From: djwatson@olg.com
Subject: Re: Kolb-List: MIG welding aluminum
Mike=2C
I probably have the same welder (WP-125) and my plan was to do lite alu
minum also. I bought the MIG conversion=2C argon tank=2C aluminum wire=2C t
hen found out that you also have to have a new non metallic liner in the ca
ble that feeds the wire along with some other stuff=2C couldn't find the li
ner or "other stuff" so I have never been able to try it. The liner is nee
ded to prevent the wire from binding and also to prevent contamination of t
he wire. I think the wire feed wheel is the "other stuff". Another way to
go is to get a handle that has the wire spool attached which eliminates th
e wire having to go through the long cable.
Or you could buy your own AC/DC output TIG welder for a little over $20
00.00 ---- It must be AC output or you cannot do aluminum.
My wish list is too long.
V/R=2C
Dennis in MD.
----- Original Message -----
From: Mike Welch
Sent: Monday=2C April 13=2C 2009 11:49 AM
Subject: Kolb-List: MIG welding aluminum
Kolb welding guys=2C
I recently had some heli-arc welding done on some aluminum for my MkIII t
urbocharger. (the intercooler and TBI "top-hat"). Although this method of
welding aluminum is the best=2C it can get real expensive!! (I found the m
ore often I went to this guy=2C the more expensive he got. (surprise=2C su
rprise!)
I talked to my local welding shop=2C and they say I can get some aluminum
MIG welding wire=2C and use straight Argon gas (not the 25%/75% CO2/Argon
mix I'm presently using for my small MIG welder)
The alum. wire and pure Argon allows one to weld "light" alum. projects..
.....they say.
Is there anyone out there that has experience with this combination=2C an
d can say whether or not it works very well? I have a lot of small aluminu
m projects that I'd do if I could weld them myself.
I have one of those 110V Lincoln wire feed welders=2C with the MIG conver
sion kit and 125 cu.ft. gas bottle. This set up is perfect for the home we
lder guy or gal. You can weld ALL kinds of things around the house. Nice
set up. If I could switch steel wire to aluminum=2C that would be awesome!
!
Mike Welch
MkIII
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Message 23
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| Subject: | Re: MIG welding aluminum |
Mike , I belive that Miller makes a spool gun that works with linclon
welder [ it,s quite a bit
cheaper than the linclon spool gun. ] My welder is the linclon 140c
and the Miller gun works
with it.
Frank Goodnight
Firestar2
H.K.S.
On Apr 13, 2009, at 3:14 PM, Mike Welch wrote:
> Hi Dennis Watson,
>
> Your welder is the newer version of mine. I have the 115V Lincoln
> "Weld Pak 100". Here's what I know, up to this point;
> This is a dynomite welder for all the medium to small steel
> welding projects I do. I bought the K610-1 conversion kit, which
> turns it into a genuine MIG welder, plus I had to buy a decent size
> gas tank. I'm not sure it makes it all that much better. Maybe a
> little. Heck of a set up for around the shop!!
>
> I haven't found anyone who sells a spool/gun that fits my small
> welder. However, I did find a product brochure that says to convert
> my Weld Pak 100 to weld aluminum, I need the additional K664-2 kit
> (along with the gas kit above K610-1). This kit has the smooth
> lined cable, to keep it from scrunching up.
> A welding supply store sells the K664-2 kit on eBay for $65, incl
> s/h. (The first kit K610-1 cost me about $135 or so. This kit
> contained the gauges, hose, and some misc parts to convert my welder
> to a MIG welder.)
>
> So, I guess I'll go ahead and buy the aluminum conversion kit, and
> see how it does.
>
> BTW. According to the Airgas guy, he said I don't need a darker
> lens for my helmet, like a TIG welder would need.
>
> Thanks to all for your help,
> Mike Welch
>
> From: djwatson@olg.com
> To: kolb-list@matronics.com
> Subject: Re: Kolb-List: MIG welding aluminum
> Date: Mon, 13 Apr 2009 14:33:46 -0400
>
> Mike,
>
> I probably have the same welder (WP-125) and my plan was to do
> lite aluminum also. I bought the MIG conversion, argon tank,
> aluminum wire, then found out that you also have to have a new non
> metallic liner in the cable that feeds the wire along with some
> other stuff, couldn't find the liner or "other stuff" so I have
> never been able to try it. The liner is needed to prevent the wire
> from binding and also to prevent contamination of the wire. I think
> the wire feed wheel is the "other stuff". Another way to go is to
> get a handle that has the wire spool attached which eliminates the
> wire having to go through the long cable.
>
> Or you could buy your own AC/DC output TIG welder for a little
> over $2000.00 ---- It must be AC output or you cannot do aluminum.
>
> My wish list is too long.
>
> V/R,
> Dennis in MD.
>
> ----- Original Message -----
> From: Mike Welch
> To: kolb-list@matronics.com
> Sent: Monday, April 13, 2009 11:49 AM
> Subject: Kolb-List: MIG welding aluminum
>
> Kolb welding guys,
>
> I recently had some heli-arc welding done on some aluminum for my
> MkIII turbocharger. (the intercooler and TBI "top-hat"). Although
> this method of welding aluminum is the best, it can get real
> expensive!! (I found the more often I went to this guy, the more
> expensive he got. (surprise, surprise!)
>
> I talked to my local welding shop, and they say I can get some
> aluminum MIG welding wire, and use straight Argon gas (not the 25%/
> 75% CO2/Argon mix I'm presently using for my small MIG welder)
> The alum. wire and pure Argon allows one to weld "light" alum.
> projects.......they say.
>
> Is there anyone out there that has experience with this
> combination, and can say whether or not it works very well? I have
> a lot of small aluminum projects that I'd do if I could weld them
> myself.
>
> I have one of those 110V Lincoln wire feed welders, with the MIG
> conversion kit and 125 cu.ft. gas bottle. This set up is perfect
> for the home welder guy or gal. You can weld ALL kinds of things
> around the house. Nice set up. If I could switch steel wire to
> aluminum, that would be awesome!!
>
> Mike Welch
> MkIII
>
>
> Quick access to your favorite MSN content and Windows Live with
> Internet Explorer 8. Download FREE now!
>
> Rediscover Hotmail=AE: Now available on your iPhone or BlackBerry
> Check it out.
>
href="http://www.matronics.com/Navigator?Kolb-List">http://www.matronics
.com/Navigator?Kolb-List
> href="http://forums.matronics.com">http://forums.matronics.com
> href="http://www.matronics.com/contribution">http://
> www.matronics.com/c
> ttp://www.matronics.com/Navigator?Kolb-List
> ronics.com
> ww.matronics.com/contribution
>
>
> Rediscover Hotmail=AE: Now available on your iPhone or BlackBerry
> Check it out.
>
>
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Dana
--
Alpha test version: too buggy to release. Beta test version: still
too
buggy to release. Release 1.0: alternate pronounciation of beta test
version.>>
Hi Dana,
perhaps the samples tried were early. Reports of approval by the LAA
just reported in the current magazine.
I haven`t seen it but The Sherwood Ranger they speak about in their
blurb will no doubt be on show during the summer, probably at Popham in
May. I will keep an eye open for it.
Can`t imagine Donaldson of the LAA approving it if it doesn`t perform.
Pat
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| Subject: | Re: MIG welding aluminum |
I have been a Welder for over 30 years a lot of the guys have good info
but here is my opinion of what I would do
First, How thick of material are you looking to weld, anything 1/8 inch
and thicker, a spool gun works great I run a couple L-Tec 28-A spool guns
and Profax spool gun I like the L-TEC better, but these are more for
production work.
if your looking to weld any thickness material "thick or thin" a Tig Torch
hooked to a welding machine with AC & High Freq is best no matter what
Process you decide on 100% Argon gas is the only one to use to weld Aluminum
keep the welding area super clean durty aluminum does not weld good at
all, Stainless steel brush (good advice )
I never had much Luck with the smaller mig machines welding aluminum and I
have tried a few different ones over the years
Good luck with your welding adventure and if I can be of any help feel
free to ask
Ellery in Maine
Building MK3Xtra
**************The Average US Credit Score is 692. See Yours in Just 2 Easy
Steps!
mpgID%3D62%26bcd%3DAprilAvgfooterNO62)
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| Subject: | MIG welding aluminum |
Thanks for the tips=2C Ellery. At his time=2C and within my budget=2C I th
ink I'll have to try that kit made for my small MIG welder. I'll post a co
mment about my successes or failures=2C after I get a chance to check it ou
t.
My aluminum welding is what most could call "light". Probably 1/8" or less
. I'm just looking for something that can do small projects once in awhile
=2C without spending money on a TIG welder.
BTW=2C are you back to work on the MKIII Xtra yet?
Thanks=2C Mike W
From: ElleryWeld@aol.com
Subject: Re: Kolb-List: MIG welding aluminum
I have been a Welder for over 30 years a lot of the guys have good info but
here is my opinion of what I would do
First=2C How thick of material are you looking to weld=2C anything 1/8 in
ch and thicker=2C a spool gun works great I run a couple L-Tec 28-A spool g
uns and Profax spool gun I like the L-TEC better=2C but these are more for
production work.
if your looking to weld any thickness material "thick or thin" a Tig Torch
hooked to a welding machine with AC & High Freq is best no matter what Pro
cess you decide on 100% Argon gas is the only one to use to weld Aluminum
keep the welding area super clean durty aluminum does not weld good at all
=2C Stainless steel brush (good advice )
I never had much Luck with the smaller mig machines welding aluminum and I
have tried a few different ones over the years
Good luck with your welding adventure and if I can be of any help feel free
to ask
Ellery in Maine
Building MK3Xtra
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rt.com%2Fpm%2Fdefault.aspx%3Fsc%3D668072%26hmpgID%3D62%26bcd%3DAprilAvgfoot
erNO62> See Yours in Just 2 Easy Steps!
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Message 27
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At 10:37 PM 4/12/2009, you wrote:
>
>
>I was chewing gum and painting Poly Tone , using a breating device
>that had charcoal filters..It fit well below mouth and around nose
>up to fore head... I noticed after a while that the chewing gum
>began to disolve..:-) Acetone and Mek.... in the brew...Herb
>
>>
>>What's the real advantage of Stits over Ceconite/dope? Just the
>>number of coats required? I've repaired Ceconite (years ago) and
>>Stits (last year) but never covered an entire airplane.
>>
>>One thing I noticed is that the Stits chemicals smell much more
>>evil/toxic than dope...though I realize that could be purely
>>subjective, and I know neither are really healthy.
>>
>>-Dana
Sorry, I couldn't help myself.........
--------------------------------------------------------------------------
Hate to say it, but you probably gotta just chuck all that stuff and start
over... Didn't know they even bothered packaging MEK in pints... Get used
to buying MEK by the 55 gal drum during the polyfiber covering festival...
It is the "universal solvent" of Stitsdom.... you will clean everything with
it... spray guns, tools, small neighborhood children, the cat, your
underarms...whatever... by the way, it slam dunks athletes foot... but is
pure hell on Tupperware... About three weeks into the covering frenzy, I
found that if I did NOT get at least eight daily hours of intense MEK fumes,
my hands shook so badly I had difficulty pouring gin, or lighting cigars....
Relax, you will have a great time with the covering... have no
trepidation... just watch the dumb little covering video 12 or 15 times...
send a personal line of credit for 10 or 12 grand to your Stits pusher of
choice, (you will know him like a brother by the time this is all over...)
and wade in.... By the way, check your liver at the door.... after six
weeks of MEK fume respiratory saturation, it will fall out on the floor if
you bend over abruptly.... Most of the skin on your hands will grow back
within the first year, so don't sweat that.... I never really gave a damn
about my kids anyway, so not recognizing them any more is really no big
deal... A man has to keep his perspective... health is of no real
consequence... your family is only a passing concern... Remember, the only
truly important thing in life is NO PINHOLES.... everything else is merely a
fleeting distraction... For months, I would suddenly sit bolt-upright in
bed in the wee hours, drenched in cold sweat, screaming "PINHOLES!!!
PINHOLES!!!... and then retch onto an empty poly-brush can I kept alongside
the bed for just such an eventuality... My long suffering Bride would then
tiptoe out to the kitchen and bring me a warm glass of MEK, the only thing
which would bring me ease at such times...
I worked through it, Lar.... like Crazy Louise in high school... like Viet
Nam... like hepatitis... like marriage.... You will eventually find your
way, too... Covering is just something a man need to work out for himself...
no one else can really help... kinda like a sick indian going off by
himself to die... Be of stout heart and good demeanor... you will
triumph...
Hang tough...
Beauford
Message 28
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....good grief, Possum.... you'll save anything.... Have you no
shame,Sir...?
...gotta go... time for my bedtime I.V....
dissolved beauford...
Do NOT Archive...
----- Original Message -----
From: possums
To: kolb-list@matronics.com
Sent: Monday, April 13, 2009 10:15 PM
Subject: Re: Kolb-List: Re: Stits
At 10:37 PM 4/12/2009, you wrote:
I was chewing gum and painting Poly Tone , using a breating device
that had charcoal filters..It fit well below mouth and around nose up
to fore head... I noticed after a while that the chewing gum began to
disolve..:-) Acetone and Mek.... in the brew...Herb
What's the real advantage of Stits over Ceconite/dope? Just the
number of coats required? I've repaired Ceconite (years ago) and Stits
(last year) but never covered an entire airplane.
One thing I noticed is that the Stits chemicals smell much more
evil/toxic than dope...though I realize that could be purely subjective,
and I know neither are really healthy.
-Dana
Sorry, I couldn't help myself.........
-------------------------------------------------------------------------
-
Hate to say it, but you probably gotta just chuck all that stuff and
start
over... Didn't know they even bothered packaging MEK in pints... Get
used
to buying MEK by the 55 gal drum during the polyfiber covering
festival...
It is the "universal solvent" of Stitsdom.... you will clean
everything with
it... spray guns, tools, small neighborhood children, the cat, your
underarms...whatever... by the way, it slam dunks athletes foot... but
is
pure hell on Tupperware... About three weeks into the covering frenzy,
I
found that if I did NOT get at least eight daily hours of intense MEK
fumes,
my hands shook so badly I had difficulty pouring gin, or lighting
cigars....
Relax, you will have a great time with the covering... have no
trepidation... just watch the dumb little covering video 12 or 15
times...
send a personal line of credit for 10 or 12 grand to your Stits pusher
of
choice, (you will know him like a brother by the time this is all
over...)
and wade in.... By the way, check your liver at the door.... after six
weeks of MEK fume respiratory saturation, it will fall out on the
floor if
you bend over abruptly.... Most of the skin on your hands will grow
back
within the first year, so don't sweat that.... I never really gave a
damn
about my kids anyway, so not recognizing them any more is really no
big
deal... A man has to keep his perspective... health is of no real
consequence... your family is only a passing concern... Remember, the
only
truly important thing in life is NO PINHOLES.... everything else is
merely a
fleeting distraction... For months, I would suddenly sit bolt-upright
in
bed in the wee hours, drenched in cold sweat, screaming "PINHOLES!!!
PINHOLES!!!... and then retch onto an empty poly-brush can I kept
alongside
the bed for just such an eventuality... My long suffering Bride would
then
tiptoe out to the kitchen and bring me a warm glass of MEK, the only
thing
which would bring me ease at such times...
I worked through it, Lar.... like Crazy Louise in high school... like
Viet
Nam... like hepatitis... like marriage.... You will eventually find
your
way, too... Covering is just something a man need to work out for
himself...
no one else can really help... kinda like a sick indian going off by
himself to die... Be of stout heart and good demeanor... you will
triumph...
Hang tough...
Beauford
Message 29
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Dennis.Kirby(at)kirtland. wrote:
>
> Good luck in finding your gremlin(s)
>
> Dennis Kirby
> Mark-3, 912ul
> New Mexico
> Do not archive
>
>
FWIW, I did discover this afternoon that the harmonic goes virtually away at cruise.
At 100mph the harmonic rrruurrrurrr part is practically gone.
I now seem to only get it in climb modes of flight, I suppose with the slower airflow
through the disk, high AoA of the wing dirties the air up and makes it
do its thing. At cruise, the AoA goes down, airflow is faster through the disk.
I guess that's what cleans it up. Shows the prop is not a problem for sure.
BTW, that 100mph cruise is at only 5050 to 5090 rpm and slightly more than half
throttle, which is simply spectacular performance. I couldn't get 100mph indicated
with the IVO at those rpms no matter how I had it set.
I'm still shocked and amazed even tho I landed a couple hours ago...
LS
--------
LS
Titan II SS
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=239041#239041
Message 30
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----- Original Message -----
From: Beauford T
To: kolb-list@matronics.com
Sent: Monday, April 13, 2009 9:10 PM
Subject: Re: Kolb-List: Re: Stits
....good grief, Possum.... you'll save anything.... Have you no
shame,Sir...?
...gotta go... time for my bedtime I.V....
dissolved beauford...
Do NOT Archive...
It was worth a rerun! I did find that it was a good remedy for Bat
shit on your wings though. During recovering and subsequent painting of
my plane, I could hear the Bats in the rafters squealing and raising
hell. That has been two years and have not had a speck of guano since.
Mosquitoes are worse though.
Larry C
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