Today's Message Index:
----------------------
1. 10:01 AM - Re: Spark plugs and heat range (Bob Turner)
2. 10:58 AM - Re: Re: Spark plugs and heat range (Tim Olson)
3. 05:28 PM - Wing Root Fairing (Kelly McMullen)
4. 05:45 PM - Re: Wing Root Fairing (Bob Leffler)
5. 06:16 PM - Re: Wing Root Fairing (Lenard Iszak)
6. 06:42 PM - Re: Wing Root Fairing (Kearney)
7. 07:02 PM - Re: Wing Root Fairing (Robert Jones)
8. 07:04 PM - Re: Spark plugs and heat range (rvdave)
9. 07:23 PM - Re: Spark plugs and heat range (Bob Turner)
10. 07:30 PM - Re: Re: Spark plugs and heat range (Kelly McMullen)
11. 08:04 PM - Re: Wing Root Fairing (Phil Perry)
12. 08:13 PM - Re: Re: Spark plugs and heat range (Tim Olson)
13. 09:05 PM - Re: Spark plugs and heat range (rvdave)
14. 09:46 PM - Re: Re: Spark plugs and heat range (Tim Olson)
Message 1
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| Subject: | Re: Spark plugs and heat range |
The heat range spec is a measure of the plugs thermal conductivity, tip to body.
Too cold, deposits wont burn off. Too hot risks pre-ignition. (Never run hotter
than max allowed). Dave, if you cant lean to as lean as you want, you probably
need to adjust the cylinder mixtures to all be the same, by making very small
changes in the injector sizes. You can buy them in 0.0005 increments.
--------
Bob Turner
RV-10 QB
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=496476#496476
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| Subject: | Re: Spark plugs and heat range |
Also, make sure your injector nozzles all have the air bleed hole in the
proper location,
and I've found with a group of other people that especially on #2, that
air bleed being
directly in the airstream blast of the inlet can be affected a little.
It can help if there is
any sort of air dam that would disturb the air.
Definitely take Bob's suggestion though and make sure you tune the nozzles
properly.
Tim
On 5/24/2020 11:59 AM, Bob Turner wrote:
>
> The heat range spec is a measure of the plugs thermal conductivity, tip to body.
Too cold, deposits wont burn off. Too hot risks pre-ignition. (Never run hotter
than max allowed). Dave, if you cant lean to as lean as you want, you probably
need to adjust the cylinder mixtures to all be the same, by making very
small changes in the injector sizes. You can buy them in 0.0005 increments.
>
> --------
> Bob Turner
> RV-10 QB
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=496476#496476
>
>
Message 3
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| Subject: | Wing Root Fairing |
Perhaps I am missing something in the plans. Section 44 on wing attach has
you fit the wing root fairing top and bottom to the fuselage. I recall
doing a lot of filing to make this fit, although I don't see any mention
now in the plans for having to do that. My question is, I see nothing
calling for U-channel or other weather strip. rubber between the wing root
fairing and the fuselage. Even with careful fitting you pretty much have
to have at least 16" gap. It seems like it might be worth enlarging the gap
a little to put some for of rubber there to get an actual seal. What have
all y'all done with that?
Kelly
40866
Flying since 2016, getting close to paint shop
Sent from my TRS-80 Model 100
Message 4
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| Subject: | Re: Wing Root Fairing |
Filed to about a 1/16=94 gap. Be sure to allow for paint thickness, so my
1/16=94 gap was probably closer to 1/8=94 before paint.
Although I do know others that installed a rubber seal too.
Get Outlook for iOS<https://aka.ms/o0ukef>
________________________________
From: owner-rv10-list-server@matronics.com <owner-rv10-list-server@matronic
s.com> on behalf of Kelly McMullen <apilot2@gmail.com>
Sent: Sunday, May 24, 2020 8:23:45 PM
Subject: RV10-List: Wing Root Fairing
Perhaps I am missing something in the plans. Section 44 on wing attach has
you fit the wing root fairing top and bottom to the fuselage. I recall doin
g a lot of filing to make this fit, although I don't see any mention now in
the plans for having to do that. My question is, I see nothing calling for
U-channel or other weather strip. rubber between the wing root fairing an
d the fuselage. Even with careful fitting you pretty much have to have at l
east 16" gap. It seems like it might be worth enlarging the gap a little to
put some for of rubber there to get an actual seal. What have all y'all do
ne with that?
Kelly
40866
Flying since 2016, getting close to paint shop
Sent from my TRS-80 Model 100
Message 5
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| Subject: | Re: Wing Root Fairing |
I used a rubber j strip from
Spruce. Photo attached.
Lenny
> On May 24, 2020, at 8:35 PM, Kelly McMullen <apilot2@gmail.com> wrote:
>
> =EF=BB
> Perhaps I am missing something in the plans. Section 44 on wing attach has
you fit the wing root fairing top and bottom to the fuselage. I recall doin
g a lot of filing to make this fit, although I don't see any mention now in t
he plans for having to do that. My question is, I see nothing calling for U-
channel or other weather strip. rubber between the wing root fairing and th
e fuselage. Even with careful fitting you pretty much have to have at least 1
6" gap. It seems like it might be worth enlarging the gap a little to put so
me for of rubber there to get an actual seal. What have all y'all done with t
hat?
> Kelly
> 40866
> Flying since 2016, getting close to paint shop
> Sent from my TRS-80 Model 100
Message 6
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| Subject: | Re: Wing Root Fairing |
Kelly
I used edge guard from an auto body shop on both my -10s. Works very nicely.
Cheers
Les
Sent from my iPhone
> On May 24, 2020, at 7:29 PM, Lenard Iszak <lenard@rapiddecision.com> wrote
:
>
> =EF=BBI used a rubber j strip from
> Spruce. Photo attached.
>
> <image0.jpeg>
>
>
>
> Lenny
>
>
>>> On May 24, 2020, at 8:35 PM, Kelly McMullen <apilot2@gmail.com> wrote:
>>>
>> =EF=BB
>> Perhaps I am missing something in the plans. Section 44 on wing attach ha
s you fit the wing root fairing top and bottom to the fuselage. I recall doi
ng a lot of filing to make this fit, although I don't see any mention now in
the plans for having to do that. My question is, I see nothing calling for U
-channel or other weather strip. rubber between the wing root fairing and t
he fuselage. Even with careful fitting you pretty much have to have at least
16" gap. It seems like it might be worth enlarging the gap a little to put s
ome for of rubber there to get an actual seal. What have all y'all done with
that?
>> Kelly
>> 40866
>> Flying since 2016, getting close to paint shop
>> Sent from my TRS-80 Model 100
Message 7
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| Subject: | Re: Wing Root Fairing |
You can=99t put any rubber there. The fairing lays tight against the s
urface underneath. There is no room for any kind of seal.
Robert Jones
> On May 24, 2020, at 5:32 PM, Kelly McMullen <apilot2@gmail.com> wrote:
>
> =EF=BB
> Perhaps I am missing something in the plans. Section 44 on wing attach has
you fit the wing root fairing top and bottom to the fuselage. I recall doin
g a lot of filing to make this fit, although I don't see any mention now in t
he plans for having to do that. My question is, I see nothing calling for U-
channel or other weather strip. rubber between the wing root fairing and th
e fuselage. Even with careful fitting you pretty much have to have at least 1
6" gap. It seems like it might be worth enlarging the gap a little to put so
me for of rubber there to get an actual seal. What have all y'all done with t
hat?
> Kelly
> 40866
> Flying since 2016, getting close to paint shop
> Sent from my TRS-80 Model 100
Message 8
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| Subject: | Re: Spark plugs and heat range |
Tim Olson wrote:
> Also, make sure your injector nozzles all have the air bleed hole in the
> proper location,
> and I've found with a group of other people that especially on #2, that
> air bleed being
> directly in the airstream blast of the inlet can be affected a little.
> It can help if there is
> any sort of air dam that would disturb the air.
>
> Definitely take Bob's suggestion though and make sure you tune the nozz
>
> Tim
>
>
>
[/quote]
Ill have to take a look at the vent hole, not sure how that comes into play though.
I have gotten my nozzles down to the closest I think I can get them but
may play with them again. How does the vent hole not spew fuel since it is pressurized?
Is the holder some type of check valve? Would like to learn more
about that.
Dave
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=496483#496483
Message 9
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| Subject: | Re: Spark plugs and heat range |
Its Bernouliis principle, just like on top of the wing. Theres also an accessory
wand for an air compressor, with a right angle port. Hook up vinyl tubing, it
will suck liquid de-greaser and mix it with the air. Same thing here, it mixes
just a bit of air with the fuel to help atomize it.
--------
Bob Turner
RV-10 QB
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=496485#496485
Message 10
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| Subject: | Re: Spark plugs and heat range |
The injector body has a vent hole that lets air in through a screen, which
mixes with the fuel coming through the inner restrictor of the nozzle.
The vent is supposed to be at atmospheric pressure, except on turbo-charged
applications where additional tubing keeps it at manifold inlet pressure.
You can tell where the vent hole is by a flat marked with an A. It is
supposed to point down, within a flat either way. I haven't had much luck
aligning a couple of mine, because you are only allowed between 40-60 in/lb
torque, which is about one flat of rotation.
I have stock restrictors (.028) on cyl 1,2,5,6, and .0275 on cyl 3 and 4.
YMMV
Kelly
Sent from my TRS-80 Model 100
On Sun, May 24, 2020 at 7:09 PM rvdave <rv610dave@gmail.com> wrote:
>
>
> Tim Olson wrote:
> > Also, make sure your injector nozzles all have the air bleed hole in th
e
> > proper location,
> > and I've found with a group of other people that especially on #2, that
> > air bleed being
> > directly in the airstream blast of the inlet can be affected a little.
> > It can help if there is
> > any sort of air dam that would disturb the air.
> >
> > Definitely take Bob's suggestion though and make sure you tune the nozz
> >
> > Tim
> >
> >
> >
> [/quote]
>
> I=99ll have to take a look at the vent hole, not sure how that come
s into
> play though. I have gotten my nozzles down to the closest I think I can
> get them but may play with them again. How does the vent hole not spew
> fuel since it is pressurized? Is the holder some type of check valve?
> Would like to learn more about that.
>
>
> Dave
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=496483#496483
>
>
===========
===========
===========
===========
===========
>
>
Message 11
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| Subject: | Re: Wing Root Fairing |
I opened it up to about 1/8th inch or so, then installed some U shaped rubbe
r on the wing root fairing. It seals up tight and looks nice.
No issues making it work - easy to do.
Phil
Sent from my iPhone
> On May 24, 2020, at 9:06 PM, Robert Jones <rjones560xl@gmail.com> wrote:
>
> =EF=BBYou can=99t put any rubber there. The fairing lays tight ag
ainst the surface underneath. There is no room for any kind of seal.
>
> Robert Jones
>
>>> On May 24, 2020, at 5:32 PM, Kelly McMullen <apilot2@gmail.com> wrote:
>>>
>> =EF=BB
>> Perhaps I am missing something in the plans. Section 44 on wing attach ha
s you fit the wing root fairing top and bottom to the fuselage. I recall doi
ng a lot of filing to make this fit, although I don't see any mention now in
the plans for having to do that. My question is, I see nothing calling for U
-channel or other weather strip. rubber between the wing root fairing and t
he fuselage. Even with careful fitting you pretty much have to have at least
16" gap. It seems like it might be worth enlarging the gap a little to put s
ome for of rubber there to get an actual seal. What have all y'all done with
that?
>> Kelly
>> 40866
>> Flying since 2016, getting close to paint shop
>> Sent from my TRS-80 Model 100
Message 12
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| Subject: | Re: Spark plugs and heat range |
That was one of the theories as to why some people had trouble running LOP.
If you had an intake that gave more manifold pressure than what your upper c
owl area sees with air pressure, the air bleed won=99t bleed air in as
easily so you won=99t get the atomization you want. For people with t
urbos they have the system mentioned previously. But it is just something t
o note that upper cowl plenum pressure is important to atomization since tha
t vent needs to have air sucking in, to atomize fuel. Look at your injector
next time it=99s off and you=99ll see a mesh shield on it. Now
you know why it=99s there...
Tim
> On May 24, 2020, at 9:36 PM, Kelly McMullen <apilot2@gmail.com> wrote:
>
> =EF=BB
> The injector body has a vent hole that lets air in through a screen, which
mixes with the fuel coming through the inner restrictor of the nozzle.
> The vent is supposed to be at atmospheric pressure, except on turbo-charge
d applications where additional tubing keeps it at manifold inlet pressure.
> You can tell where the vent hole is by a flat marked with an A. It is supp
osed to point down, within a flat either way. I haven't had much luck aligni
ng a couple of mine, because you are only allowed between 40-60 in/lb torque
, which is about one flat of rotation.
> I have stock restrictors (.028) on cyl 1,2,5,6, and .0275 on cyl 3 and 4. Y
MMV
> Kelly
> Sent from my TRS-80 Model 100
>
>
>> On Sun, May 24, 2020 at 7:09 PM rvdave <rv610dave@gmail.com> wrote:
>>
>>
>> Tim Olson wrote:
>> > Also, make sure your injector nozzles all have the air bleed hole in th
e
>> > proper location,
>> > and I've found with a group of other people that especially on #2, that
>> > air bleed being
>> > directly in the airstream blast of the inlet can be affected a little.
>> > It can help if there is
>> > any sort of air dam that would disturb the air.
>> >
>> > Definitely take Bob's suggestion though and make sure you tune the nozz
>> >
>> > Tim
>> >
>> >
>> >
>> [/quote]
>>
>> I=99ll have to take a look at the vent hole, not sure how that come
s into play though. I have gotten my nozzles down to the closest I think I c
an get them but may play with them again. How does the vent hole not spew f
uel since it is pressurized? Is the holder some type of check valve? Would
like to learn more about that.
>>
>>
>> Dave
>>
>>
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=496483#496483
>>
>>
>>
>>
>>
>>
>> ==========
>> -List" rel="noreferrer" target="_blank">http://www.matronics.com/Navi
gator?RV10-List
>> ==========
>> FORUMS -
>> eferrer" target="_blank">http://forums.matronics.com
>> ==========
>> WIKI -
>> errer" target="_blank">http://wiki.matronics.com
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>> b Site -
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n
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Message 13
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| Subject: | Re: Spark plugs and heat range |
Wondering how critical it is for the A to be pointed down since that in itself
is relative to the slight angle of the injector body. Could it be that some injectors
are receiving ram pressure instead of atmospheric pressure or am I just
overthinking this? What did you mean by an air dam that could disturb the
air?
--------
Dave Ford
Cadillac, MI
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=496489#496489
Message 14
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| Subject: | Re: Spark plugs and heat range |
Just a guess but Im guessing that down is just because if it were up, it could
have air escaping easier when fuel isnt actively flowing and/or it may not get
the same siphon effect while flowing. Not sure.
Some could be getting ram pressure I think. The difference would be slight but
if you picture the injector right in the air blast where the air hasnt slowed
much it could be different than other injectors that are more protected. The
injector side being on the left as you face it from the rocker cover means the
#2 is the one most directly facing the incoming cowl air.
When I talk about air dams I mean the ones right in front of the front two cylinder
fins. The amount of trimming people do can vary so the effect on airflows
in areas near it behind them could be slightly different from plane to plane
too. I cant remember who, but someone I talked to years ago experimented with
shielding that injector a little from direct airflow and I think they saw a
little improvement in how well they could run LOP. Its many years ago now, so
I forget the details.
Tim
> On May 24, 2020, at 11:12 PM, rvdave <rv610dave@gmail.com> wrote:
>
>
> Wondering how critical it is for the A to be pointed down since that in itself
is relative to the slight angle of the injector body. Could it be that some
injectors are receiving ram pressure instead of atmospheric pressure or am I
just overthinking this? What did you mean by an air dam that could disturb the
air?
>
> --------
> Dave Ford
> Cadillac, MI
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=496489#496489
>
>
>
>
>
>
>
>
>
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