Today's Message Index:
----------------------
1. 05:44 AM - Gearbox shimming (Catz631@aol.com)
2. 06:29 AM - Re: Speaking of coolant hoses... (lucien)
3. 06:40 AM - Re: Speaking of coolant hoses... (lucien)
4. 07:12 AM - Re: Gearbox shimming (rampil)
5. 09:12 AM - Re: HOSE FOR ROTAX 912 (Goodone)
6. 11:32 AM - Re: HOSE FOR ROTAX 912 (lucien)
7. 12:49 PM - Re: HOSE FOR ROTAX 912 (Goodone)
8. 01:19 PM - Re: Speaking of coolant hoses... (Goodone)
9. 04:05 PM - Re: Re: HOSE FOR ROTAX 912 (Noel Loveys)
10. 04:56 PM - Re: Re: HOSE FOR ROTAX 912 (Noel Loveys)
11. 07:15 PM - New rules affetive April 2nd (Roger Lee)
12. 07:23 PM - Re: Gearbox shimming (Roger Lee)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Gearbox shimming |
I just completed my Rotax 912 refresher course and I believe I have found
the source of my occasional kickback/dieseling on shutdown that I have
mentioned on this forum several times. This may not be a good description but
essentially sometimes when shutting the engine down the prop would turn
backwards 3 or 4 revolutions. Now, on occasion, during cold start, the engine will
hang at around 1200 rpm and no amount of throttle will pull it out of that
rpm. The engine just shakes and it screws up the carb fuel flow(ie: float and
needle bouncing up and down) . I have to turn off the ignition and do it
again
The instructor seems to think these two problems indicate weak Bellevue
(sp) washers in the gearbox. My engine is older than most of yours, I
suspect(1993)It only has 230 hours but over time these springs have weakened and
it
is shim time.( as well as overhaul time if my plane was not experimental)
The theory is the weakened springs have allowed the "dogs' to separate at
shutdown and to flip the prop backwards on the backside of the "hill" of the
dog,so to speak. It is difficult to explain without the parts in front of you.
I am thinking about installing the slipper clutch also as my engine does
not have one.
Soooo now I have to make a tool to remove the gearbox.
Dick Maddux
912UL
Milton,Fl
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Speaking of coolant hoses... |
rickofudall wrote:
> Lucien, This is Spruce's table for 3003-O tubing. The least of the tubing used
for lines. For formability, I'd go with 5052-O, it's not heat treated and you
can get it both in .035 and .049. I'd be perfectly happy with the .035. If you
aren't worried about weight, go with copper tubing and polish it up. When I
ran air lines in my shop I checked the spec on the thinest wall copper in 3/4"
and it was rated to over 1000 psi.
>
> Rick
>
5052-0 .049 is what I went ahead and ordered with the beader, so that's what I'll
be using. I thought about copper but I've also heard about possible corrosion
problems with it. And I'm probably not going to need lengths that long to justify
it, so just went with Al.
Hope to get it before the weekend so I can get the job done....
LS
--------
LS
Titan II SS
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=284705#284705
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Speaking of coolant hoses... |
VIXEN wrote:
> What is wrong with using automotive hoses on the Rotax? Many of the late model
vehicles have very creative hose assemblies and if you visit the warehouse section
of your local auto supplier you can quite often find a very nicely shaped
hose with just the right preformed bends that eliminates many of the connected
elbows necessary when using straight hoses. It seems to me that one fairly
continuous formed hose if safer than connected bits. After all, how many of us
change out our auto hoses every few years and how many actually fail. I believe
the pressures would be quite similar to modern vehicles. Comments?
>
Well that's the problem. I've not been able to find any pre-formed coolant hose
that'll fit my particular installation. My blood pressure now just starts going
into the yellow zone when I try to find these, so I've just accepted that I'm
going to have to manufacture my own.
JD (the original builder) got lucky on the radiator-to-water-pump hose originally
but the top hose is fabricated with a bypass valve for a cabin heat system.
I can locate 90 degree and one 135 degree bend (needed on the top hose) tho but
nothing that'll fit alone.
Rotax actually recommends using pipes in the installation manual for longer runs
instead of long hoses so I don't feel bad about splicing them.
As for the type of hose, Rotax dealers have told me to just use a good quality
automotive radiator hose, there's no Unobtainium material requirement here fortunately,
just regular automotive stuff suffices.
I prefer Gates and fortunately that's available locally (gates is what's on the
plane right now and it's still in good shape except for the one tube that's a
little chewed up on one end). The specs on the hose are in the installation manual
too.
Looking forward to finally getting this done when I get the tools. That one hose
has been a splinter in my mind for a while and it'll be good to finally extract
it ;)
LS
--------
LS
Titan II SS
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=284707#284707
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Gearbox shimming |
Hi Dick,
Which course did you attend? Was it in Sebring?
ijr
--------
Ira N224XS
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=284718#284718
Message 5
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: HOSE FOR ROTAX 912 |
I have just be told of a fuel line hose called Barricade Fuel Hose. This is supposed
to be a new product (at NAPA anyway) made by Gates and safe for use with
fuel containing alcohol. Evidently it costs less than $2 per foot. Anyone using
it?
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=284732#284732
Message 6
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: HOSE FOR ROTAX 912 |
rampil wrote:
> Hi Dick,
>
> You are absolutely correct, the coolant hose is 17 mm and should be
> available from any hose shop.
>
> I bought mine locally and just had to tell the clerk that it was for a marine
> inboard engine since they don't sell to aircraft! Same deal when I had
> to originally buy inner tubes for the nose gear - the local tire shops will
> only sell the tubes if they are for a go-kart, not an aircraft!
>
> Ira
May I ask what shop that was and where?
I havn't been able to locate 17mm heater hose anywhere in America except for Rotax
dealers, so naturally I'm highly interested in where you obtained it?...
Thanks,
LS
--------
LS
Titan II SS
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=284744#284744
Message 7
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: HOSE FOR ROTAX 912 |
Please note that I am talking about fuel line. I was told that the product is new
and that NAPA stores are stalking it.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=284746#284746
Message 8
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Speaking of coolant hoses... |
I am familiar with Rotax 912 powered homebuilt aircraft using coolant lines made
of corrugated stainless steel tubing (CSST) like that used for natural gas installations
in your home. This stuff is very flexible and would seem to be be
a good candidate for use in aircraft cooling systems. The flexible CSST is attached
at its end with short rubber sections of coolant hose and clamps.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=284748#284748
Message 9
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: HOSE FOR ROTAX 912 |
Anything using a synthetic butyrate rubber should be ok.
Noel
-----Original Message-----
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of Goodone
Sent: February 3, 2010 1:42 PM
Subject: RotaxEngines-List: Re: HOSE FOR ROTAX 912
I have just be told of a fuel line hose called Barricade Fuel Hose. This is
supposed to be a new product (at NAPA anyway) made by Gates and safe for use
with fuel containing alcohol. Evidently it costs less than $2 per foot.
Anyone using it?
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=284732#284732
Message 10
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: HOSE FOR ROTAX 912 |
Try any Japanese car dealership or PWC outlet.
Noel
-----Original Message-----
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of lucien
Sent: February 3, 2010 4:00 PM
Subject: RotaxEngines-List: Re: HOSE FOR ROTAX 912
rampil wrote:
> Hi Dick,
>
> You are absolutely correct, the coolant hose is 17 mm and should be
> available from any hose shop.
>
> I bought mine locally and just had to tell the clerk that it was for a
marine
> inboard engine since they don't sell to aircraft! Same deal when I had
> to originally buy inner tubes for the nose gear - the local tire shops
will
> only sell the tubes if they are for a go-kart, not an aircraft!
>
> Ira
May I ask what shop that was and where?
I havn't been able to locate 17mm heater hose anywhere in America except for
Rotax dealers, so naturally I'm highly interested in where you obtained
it?...
Thanks,
LS
--------
LS
Titan II SS
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=284744#284744
Message 11
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | New rules affetive April 2nd |
Here are the new FAA rules. Read the bottom first.
http://edocket.access.gpo.gov/2010/2010-2056.htm
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Repair Center
520-574-1080
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=284789#284789
Message 12
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Gearbox shimming |
Hi Dick,
Your friction torque test should tell you if they are weak.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Repair Center
520-574-1080
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=284790#284790
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|