Today's Message Index:
----------------------
1. 04:31 AM - alternate air/bypass air on fuel injection (Lew Gallagher)
2. 07:53 AM - Re: alternate air/bypass air on fuel injection (Marcus Cooper)
3. 07:54 AM - Re: alternate air/bypass air on fuel injection (Rob Kermanj)
4. 08:46 AM - Re: alternate air/bypass air on fuel injection (Michael Kraus)
5. 01:13 PM - Monster retread caution (woxofswa)
6. 06:33 PM - Re: rv-10 training pirep (rv10flyer)
7. 07:08 PM - Re: alternate air/bypass air on fuel injection (Dick & Vicki Sipp)
Message 1
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| Subject: | alternate air/bypass air on fuel injection |
Hey guys,
I need some pilot input here. I'm helping an RV-8 builder on his cowl intake and
airbox. He has a fuel injected four cylinder engine -- same setup as the -10.
He says Van's instructions call for a bypass door on the bottom AND and alternate
door in the "snout" of the box (allows engine compartment air to be filtered
instead of snorkle air). On Wes's RV-10 we only installed the emergency
door on the bottom. The thought is that with fuel injection there is not
the icing problem as with a carburated engine ...?
It seems to me that it would be redundant to have two doors (and more gizmos/messier
install/things to mess up, etc.) if the reason to have the snout door is
to "pull in warm cowling air to defrost the filter" -- if you had ice, bird strike,
debris, whatever in through the cowl snorkle, wouldn't you have to open
the bypass door anyway?
Are others really installing two doors? Obviously I'm just the hired help, his
plane, he's the pilot, etc. but I'd like some experienced input.
Thanks, - Lew
And congrats, Matt on the quick fix. Happy holidays to all!
--------
non-pilot
crazy about building
NOW OFICIALLY BUILDER #40549
Fly off completed !
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=360443#360443
Message 2
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| Subject: | Re: alternate air/bypass air on fuel injection |
Lew,
If I remember correctly (to be honest it's been awhile and I could be mistaken),
my RV-6 had the alternate "snout door" as you mentioned and I had a fuel
injected engine. However there was not the bottom door, only one alternate air
source. I agree that 2 would be excessive. If I had to choose, I'd go the
RV-10 route as it bypasses the filter and worst case scenario something clogs
the filter in addition to the intake.
Marcus
40286
do not archive
On Dec 8, 2011, at 7:27 AM, Lew Gallagher wrote:
Hey guys,
I need some pilot input here. I'm helping an RV-8 builder on his cowl intake and
airbox. He has a fuel injected four cylinder engine -- same setup as the -10.
He says Van's instructions call for a bypass door on the bottom AND and alternate
door in the "snout" of the box (allows engine compartment air to be filtered
instead of snorkle air). On Wes's RV-10 we only installed the emergency
door on the bottom. The thought is that with fuel injection there is not
the icing problem as with a carburated engine ...?
It seems to me that it would be redundant to have two doors (and more gizmos/messier
install/things to mess up, etc.) if the reason to have the snout door is
to "pull in warm cowling air to defrost the filter" -- if you had ice, bird strike,
debris, whatever in through the cowl snorkle, wouldn't you have to open
the bypass door anyway?
Are others really installing two doors? Obviously I'm just the hired help, his
plane, he's the pilot, etc. but I'd like some experienced input.
Thanks, - Lew
And congrats, Matt on the quick fix. Happy holidays to all!
--------
non-pilot
crazy about building
NOW OFICIALLY BUILDER #40549
Fly off completed !
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=360443#360443
Message 3
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| Subject: | Re: alternate air/bypass air on fuel injection |
Installed one door only per vans published instructions.
Do not archive.
Rob Kermanj
Sent from my iPhone
On Dec 8, 2011, at 7:27 AM, "Lew Gallagher" <lewgall@charter.net> wrote:
>
> Hey guys,
>
> I need some pilot input here. I'm helping an RV-8 builder on his cowl intake
and airbox. He has a fuel injected four cylinder engine -- same setup as the
-10. He says Van's instructions call for a bypass door on the bottom AND and
alternate door in the "snout" of the box (allows engine compartment air to be
filtered instead of snorkle air). On Wes's RV-10 we only installed the emergency
door on the bottom. The thought is that with fuel injection there is not
the icing problem as with a carburated engine ...?
>
> It seems to me that it would be redundant to have two doors (and more gizmos/messier
install/things to mess up, etc.) if the reason to have the snout door
is to "pull in warm cowling air to defrost the filter" -- if you had ice, bird
strike, debris, whatever in through the cowl snorkle, wouldn't you have to open
the bypass door anyway?
>
> Are others really installing two doors? Obviously I'm just the hired help, his
plane, he's the pilot, etc. but I'd like some experienced input.
>
> Thanks, - Lew
>
> And congrats, Matt on the quick fix. Happy holidays to all!
>
> --------
> non-pilot
> crazy about building
> NOW OFICIALLY BUILDER #40549
> Fly off completed !
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=360443#360443
>
>
>
>
>
>
>
>
>
>
Message 4
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| Subject: | Re: alternate air/bypass air on fuel injection |
The front hinged cable operated door door is for carb heat. If you are fuel injected,
you don't need it. The lower door is the filter bypass/alternate air
door, used on case the filter becomes plugged.
-Mike Kraus
Sent from my iPhone
On Dec 8, 2011, at 7:27 AM, "Lew Gallagher" <lewgall@charter.net> wrote:
>
> Hey guys,
>
> I need some pilot input here. I'm helping an RV-8 builder on his cowl intake
and airbox. He has a fuel injected four cylinder engine -- same setup as the
-10. He says Van's instructions call for a bypass door on the bottom AND and
alternate door in the "snout" of the box (allows engine compartment air to be
filtered instead of snorkle air). On Wes's RV-10 we only installed the emergency
door on the bottom. The thought is that with fuel injection there is not
the icing problem as with a carburated engine ...?
>
> It seems to me that it would be redundant to have two doors (and more gizmos/messier
install/things to mess up, etc.) if the reason to have the snout door
is to "pull in warm cowling air to defrost the filter" -- if you had ice, bird
strike, debris, whatever in through the cowl snorkle, wouldn't you have to open
the bypass door anyway?
>
> Are others really installing two doors? Obviously I'm just the hired help, his
plane, he's the pilot, etc. but I'd like some experienced input.
>
> Thanks, - Lew
>
> And congrats, Matt on the quick fix. Happy holidays to all!
>
> --------
> non-pilot
> crazy about building
> NOW OFICIALLY BUILDER #40549
> Fly off completed !
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=360443#360443
>
>
>
>
>
>
>
>
>
>
Message 5
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| Subject: | Monster retread caution |
On a recommendation from this forum I deleted the factory tires and ordered the
Monster retreads. It is a very nice tire with a nice thick tread. The problem
is that nice thick tread turns the 15 inch tire you ordered effectively into
a 16 inch tire which if you don't realize at the time (I didn't) throws off the
plan dimensions for the pant fitment. I ended up dropping the spacer down to
3/4 inch. I've still got more exposed tire than most, but I'm okay with that.
I've got some unimproved strips on my favorites list and can also use a conventional
chock on a main.
I like the bigger tire and higher pant clearance. In the end it will be an accidental
mod that I would have chosen had I been clever enough to figure it out
from the beginning.
--------
Myron Nelson
Mesa, AZ
Emp completed, QB wings completed, legacy build fuse in mostly done, finishing
kit in progress.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=360477#360477
Message 6
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| Subject: | Re: rv-10 training pirep |
I did my training three weeks ago. David is very patient and knowledgable. I was
able to check off everything on my to do list while there, even 16G25 direct
xw landings. I was still nervous on my first flight, but not because of my flying
ability. Transition training takes care of that. How much did it cost me
including airfare/accomodations/meals.....Less than 1% of total build cost.
Worth every dollar!
--------
Wayne Gillispie, A&P 05/93 PP 10/08
Bldr# 40983SB Started 12/1/2009
N715WD Flying 12/1/2011. Paint 2012.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=360493#360493
Message 7
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| Subject: | Re: alternate air/bypass air on fuel injection |
I think you hit the nail on the head. I only installed one door.
Dick Sipp
RV-10
-----Original Message-----
From: Lew Gallagher
Sent: Thursday, December 08, 2011 7:27 AM
Subject: RV10-List: alternate air/bypass air on fuel injection
Hey guys,
I need some pilot input here. I'm helping an RV-8 builder on his cowl
intake and airbox. He has a fuel injected four cylinder engine -- same setup
as the -10. He says Van's instructions call for a bypass door on the
bottom AND and alternate door in the "snout" of the box (allows engine
compartment air to be filtered instead of snorkle air). On Wes's RV-10 we
only installed the emergency door on the bottom. The thought is that with
fuel injection there is not the icing problem as with a carburated engine
...?
It seems to me that it would be redundant to have two doors (and more
gizmos/messier install/things to mess up, etc.) if the reason to have the
snout door is to "pull in warm cowling air to defrost the filter" -- if you
had ice, bird strike, debris, whatever in through the cowl snorkle, wouldn't
you have to open the bypass door anyway?
Are others really installing two doors? Obviously I'm just the hired help,
his plane, he's the pilot, etc. but I'd like some experienced input.
Thanks, - Lew
And congrats, Matt on the quick fix. Happy holidays to all!
--------
non-pilot
crazy about building
NOW OFICIALLY BUILDER #40549
Fly off completed !
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=360443#360443
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