Exhaust tail pipes
Moderators: GAHorn, Karl Towle, Bruce Fenstermacher
Exhaust tail pipes
Attached is a picture of the cowling on my 52. At some point in my planes life the engine was changed
from a -145 to a 0-300. When and why the cowling was hacked for the pipes I don't know. I would like to
fix this problem by replacing the pipes and then repairing the cowling. Any guidance with this issue would
by greatly appreciated.
Carl
from a -145 to a 0-300. When and why the cowling was hacked for the pipes I don't know. I would like to
fix this problem by replacing the pipes and then repairing the cowling. Any guidance with this issue would
by greatly appreciated.
Carl
Re: Exhaust tail pipes
An excellent method to repair the cowling might be found in the solutions used on the later serials, in which a sliding exit was utilized. See the IPC for that.
As for the tailpipes, you might wish to verify the correct length by contacting AWI (Aerospace Welding Inc., in MN). Charlie Fields might have the info you need. The originals only exit the lower cowl by a couple inches. Longer tailpipes are offered by some aftermarket providers but they lack approval.
And even more attractive solution would be to close the exit completely, toss the tailpipes, and replace them with the Bartone tailpipes which exit at the lower cowl opening forward of the firewall. (Contact Member Pat Bartone, found in the Directory.)As for the tailpipes, you might wish to verify the correct length by contacting AWI (Aerospace Welding Inc., in MN). Charlie Fields might have the info you need. The originals only exit the lower cowl by a couple inches. Longer tailpipes are offered by some aftermarket providers but they lack approval.
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
- Bruce Fenstermacher
- Posts: 10320
- Joined: Tue Apr 23, 2002 11:24 am
Re: Exhaust tail pipes
Carl, virtually ALL 170s, except those owned by the very meticulous owner who knows better and has time and money to correct it, have worn and reconfigured exhaust openings. Has nothing to do with a change from C-145 to 0-300 as they are identical in regard to the exhaust opening. Has more to do with removing and re-installing an exhaust system that has play and therefor can be installed slightly different each time, and of course new or different parts over the years worn or made to different tolerance added to the system. Then add a shifting cowl and you have a recipe for these holes to be worn in all sorts of directions.
My first 170 had these holes worn so bad that nearly the entire doubler inside the cowl was gone. Didn't bother me in the least and the cowl was easy to remove which is an added benefit.
If it bothers you repair it. I'd think the repair might bother me as much as the wear damage.
My first 170 had these holes worn so bad that nearly the entire doubler inside the cowl was gone. Didn't bother me in the least and the cowl was easy to remove which is an added benefit.
If it bothers you repair it. I'd think the repair might bother me as much as the wear damage.
CAUTION - My forum posts may be worth what you paid for them!
Bruce Fenstermacher, Past President, TIC170A
Email: brucefenster at gmail.com
Bruce Fenstermacher, Past President, TIC170A
Email: brucefenster at gmail.com
Re: Exhaust tail pipes
T. C. Downey wrote:Do the mod.
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
- Ryan Smith
- Posts: 1210
- Joined: Tue Nov 25, 2008 4:26 am
Re: Exhaust tail pipes
George,gahorn wrote:...And even more attractive solution would be to close the exit completely, toss the tailpipes, and replace them with the Bartone tailpipes which exit at the lower cowl opening forward of the firewall...
What is the preferred method to cover the holes up if one were to change to the Bartone/Benham muffler arrangement? Would welding aluminum back in its place cause heartburn with regard to legalities, or is it up to the interpretation of major vs. minor alteration? Making it look like no hole was ever there looks much better than two patches riveted in place.
Re: Exhaust tail pipes
Any sheet metal man worth his salt can make those holes cosmetically disappear usng a "dime and a dollar" patch, and filler/paint. (2024 aluminum, the alloy used in the cowling, is not easily welded anyway.)
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
-
- Posts: 548
- Joined: Sat Jan 26, 2013 5:58 am
Re: Exhaust tail pipes
OMG wash your mouth out.gahorn wrote:Any sheet metal man worth his salt can make those holes cosmetically disappear usng a "dime and a dollar" patch, and filler/paint. (2024 aluminum, the alloy used in the cowling, is not easily welded anyway.)
Yes the cowl lower skins are 2024-T3, and work hardened on the wheel to form them.. do not weld unless you have a heat treatment oven large enough to re-heat treat.
Re: Exhaust tail pipes
Are the Betone or the Bensham exhaust systems still available?
Carl
Carl
- daedaluscan
- Posts: 497
- Joined: Fri Apr 20, 2012 7:03 pm
Re: Exhaust tail pipes
Yes they are, I just installed Bartone pipes.
If you want a pair of the slider plates and backers from a 56B you can have them for postage from Canada.
If you want a pair of the slider plates and backers from a 56B you can have them for postage from Canada.
Charlie
1956 170B C-GDRG #27019
1956 170B C-GDRG #27019
Re: Exhaust tail pipes
Carl,
Call or email Pat Bartone in Manchester, CT. Last time I talked to him he still has the exhaust pipes in stock. His phone number is listed in the membership directory. You can find it in the "members only" section on the home page of the website. Jim
Call or email Pat Bartone in Manchester, CT. Last time I talked to him he still has the exhaust pipes in stock. His phone number is listed in the membership directory. You can find it in the "members only" section on the home page of the website. Jim
Jim Wildharber, Kennesaw, GA
Past President TIC170A (2010-12) and Georgia Area Representative
'55 170B, N3415D, SN:26958, O-300D; People's Choice '06 Kelowna, B.C., Best Modified '07 Galveston, TX, Best Modified '08 Branson, MO.
Past President TIC170A (2010-12) and Georgia Area Representative
'55 170B, N3415D, SN:26958, O-300D; People's Choice '06 Kelowna, B.C., Best Modified '07 Galveston, TX, Best Modified '08 Branson, MO.
- cessna170bdriver
- Posts: 4066
- Joined: Mon Apr 22, 2002 5:13 pm
Re: Exhaust tail pipes
I used a couple of fabric wing inspection covers to block the old holes in mine; easy to install and they didn't look that bad. This time around, I'll have a new lower cowl fabricated without the holes.
Miles
“I envy no man that knows more than myself, but pity them that know less.”
— Thomas Browne
“I envy no man that knows more than myself, but pity them that know less.”
— Thomas Browne
Re: Exhaust tail pipes
How much is the Bartone STC?
- daedaluscan
- Posts: 497
- Joined: Fri Apr 20, 2012 7:03 pm
Re: Exhaust tail pipes
I think I paid $480? But ring Mr Bartone - he is charming. I love mine.
Charlie
1956 170B C-GDRG #27019
1956 170B C-GDRG #27019
Re: Exhaust tail pipes
Would the wording of the STC prevent using the tail pipes on a TCM IO-360 vs the O-300?
They both use the same exhaust in a 170 so they'd bolt right up - if allowed.
They both use the same exhaust in a 170 so they'd bolt right up - if allowed.