Today's Message Index:
----------------------
1. 06:52 AM - Re: another exhaust (Alex Frizzell)
2. 07:48 AM - Re: another exhaust (Dave Conrad)
3. 02:13 PM - Re: C-90 alternator (William Bernard)
4. 02:34 PM - Re: another exhaust (Jim Clement)
Message 1
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| Subject: | Re: another exhaust |
Seal-Send-Time: Sun, 16 Jan 2005 08:22:48 -0600
OK, makes sense now. Thanks for the enlightening.
Alex
----- Original Message -----
From: Jim Clement<mailto:168x@merr.com>
To: tailwind-list@matronics.com<mailto:tailwind-list@matronics.com>
Sent: Saturday, January 15, 2005 9:28 PM
Subject: Re: Tailwind-List: another exhaust
Alex, The firing order is the reason for the two front together, two rear together.
It will work with both sets of two going out left and right sides. The
reason I run both out the same side is it gives more heat for the cabin heater
and keeps heat away from the gascolator which is on the left side.
Jim
----- Original Message -----
From: Alex Frizzell<mailto:CARRXW10@msn.com>
To: tailwind-list@matronics.com<mailto:tailwind-list@matronics.com>
Sent: Saturday, January 15, 2005 7:36 PM
Subject: Re: Tailwind-List: another exhaust
Jim , I hope I don't sound too dumb, but is there a reason that the exhaust
pipes don't go left bank down one side and the right bank down the other side?
I noticed the front cylinders are together in one pipe and the rear cylinders
are together in the other pipe. I was just wandering if the setup you have is
cosmetic, and it looks great I might add, or does it have something to do with
ram tuning or firing order?
Alex
Message 2
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| Subject: | Re: another exhaust |
If you look at many crossover exhaust systems you'll find many
manufacture's including Piper built exhaust systems that connected the
front right to the left rear and front left to the right rear. I have
always known these as tuned port cross over systems. I'm not sure of
what is best but keep your eyes open when you see pictures or check out
production planes with the cowls off. I think you'll see them built
both ways. Dave
On Sunday, January 16, 2005, at 08:22 AM, Alex Frizzell wrote:
> OK, makes sense now. Thanks for the enlightening.
> Alex
>
> ----- Original Message -----
> From: Jim Clement
> To: tailwind-list@matronics.com
> Sent: Saturday, January 15, 2005 9:28 PM
> Subject: Re: Tailwind-List: another exhaust
>
> Alex, The firing order is the reason for the two front together, two
> rear together. It will work with both sets of two going out left and
> right sides. The reason I run both out the same side is it gives more
> heat for the cabin heater and keeps heat away from the gascolator
> which is on the left side.
> Jim
>
>
> ----- Original Message -----
> From: Alex Frizzell
> To: tailwind-list@matronics.com
> Sent: Saturday, January 15, 2005 7:36 PM
> Subject: Re: Tailwind-List: another exhaust
>
> Jim , I hope I don't sound too dumb, but is there a reason that the
> exhaust pipes don't go left bank down one side and the right bank down
> the other side? I noticed the front cylinders are together in one pipe
> and the rear cylinders are together in the other pipe. I was just
> wandering if the setup you have is cosmetic, and it looks great I
> might add, or does it have something to do with ram tuning or firing
> order?
> Alex
>
>
Message 3
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| Subject: | Re: C-90 alternator |
Doug: Some years ago, I used an alternator from a Honda Civic on the front of an
A-65-8. I made a mount that supported the alternator from the case bolts over
the pad in the front of the case. I had to make an offset pulley to drive it.
It worked well while I had the airplane and, as far as I know, it worked later.
Bill
----- Original Message -----
From: Kayberg@aol.com
To: tailwind-list@matronics.com
Sent: Saturday, January 15, 2005 2:14 PM
Subject: Tailwind-List: C-90 alternator
I have a C-90-14F that I would like to mount a small alternator on, driving it
with a belt pulley on the prop hub/spinner. I just dont want to spend a ton
of money for the B & C version that mounts where the old generator did on the
rear of the engine.
Anyone know of a design to do this?
I am thinking of the Kuboda/John Deere alternator, but perhaps there is a better
idea.
Thanks
Doug Koenigsberg
Someday Buttercup Builder
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Message 4
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| Subject: | Re: another exhaust |
Dave, The reason for # 1 and # 2 cylinders connected and # 3 and # 4 connected
is the firing order of the lycomings is 1-3-2-4. I forget the exact number but
each time a exhaust valve opens it needs something like 23" of exhaust pipe
to exit before the next cylinder exits exhaust into the pipe. Connecting 1 - 3
together, 2 - 4 together will create more backpressure as they are each on the
same side. Jim C
----- Original Message -----
From: Dave Conrad
To: tailwind-list@matronics.com
Sent: Sunday, January 16, 2005 9:21 AM
Subject: Re: Tailwind-List: another exhaust
If you look at many crossover exhaust systems you'll find many manufacture's
including Piper built exhaust systems that connected the front right to the left
rear and front left to the right rear. I have always known these as tuned port
cross over systems. I'm not sure of what is best but keep your eyes open when
you see pictures or check out production planes with the cowls off. I think
you'll see them built both ways. Dave
On Sunday, January 16, 2005, at 08:22 AM, Alex Frizzell wrote:
OK, makes sense now. Thanks for the enlightening.
Alex
----- Original Message -----
From: Jim Clement
To: tailwind-list@matronics.com
Sent: Saturday, January 15, 2005 9:28 PM
Subject: Re: Tailwind-List: another exhaust
Alex, The firing order is the reason for the two front together, two rear together.
It will work with both sets of two going out left and right sides. The
reason I run both out the same side is it gives more heat for the cabin heater
and keeps heat away from the gascolator which is on the left side.
Jim
----- Original Message -----
From: Alex Frizzell
To: tailwind-list@matronics.com
Sent: Saturday, January 15, 2005 7:36 PM
Subject: Re: Tailwind-List: another exhaust
Jim , I hope I don't sound too dumb, but is there a reason that the exhaust
pipes don't go left bank down one side and the right bank down the other side?
I noticed the front cylinders are together in one pipe and the rear cylinders
are together in the other pipe. I was just wandering if the setup you have is
cosmetic, and it looks great I might add, or does it have something to do with
ram tuning or firing order?
Alex
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