Mark I feel your pain.Last years inspection revealed similar issues related to rust[mild steel].Only one pipe was rusted thru but we know what that means.Revmaster will make me another one in 30 days for $510 and I would do that in a heartbeat If it weren't for retirement.I bowed up and used some mandral bent pieces left over from an intake project.Welded up the offending pipe and I'm in the air again.I have not seen anything but the 4-1 with offset offered in quite a while.GPAS and Revmaster may get theirs the same place.The area around the collector was a challenge but doable.Repair will get you flying and buy some time for better fix.Tommy W.
On Sun, Jan 22, 2017 at 11:49 PM, Wayne Baker via KRnet < [email protected]> wrote: > I have a Revmaster 2100 for sale with a 4/ > > Sent from my iPhone > > > On Jan 22, 2017, at 7:29 PM, Mark Langford via KRnet < > [email protected]> wrote: > > > > Chris Gardiner wrote: > > > > > Approx,. 9 3/4 to 10 inches vertically from bottom of engine pan to > bottom of collector joint. > > > > Thanks for that and all the photos you sent Chris, and to John Bouyea as > well. Those make it pretty clear that the intake path has to be reworked, > the carb moved, and the cowling reworked, if I put a Revmaster in place of > the GP system. And it's still a gamble buying the GP Tri-gear, because it's > a completely different layout than what's on the plane now. It would > probably be easier and quicker to weld up my own exhaust system, especially > if you consider delaying a week on UPS to get started, only to find out > neither the Revmaster nor GP will fit. I have the perfect go-by sitting on > the bench...just need to order some tubing, a collector, and some flanges. > > > > I've built two exhaust systems for the Corvair, the last one out of 321 > stainless, and complained the whole time because it wasn't easy and took > forever, but it's starting to look more attractive. KR2's going to be down > for a while! > > > > The two enclosed photos are a reminder to check your exhaust system. The > multi-crack photo is mirrored on the other side of the pipe, so the whole > thing was about the break in half. The pipe is right at the flange and the > bend focuses a lot of heat on the steel, which was eroded down to near > razor-thin. This leak was inaudible. The "big break" was obvious, but not > "log-truck loud", as we say in Alabama. That photo shows why I can't get > in there to weld the inside...the exhaust gas would just come out > V...towards the carburetor. Not good, to coin a phrase... > > > > Mark Langford > > [email protected] > > http://www.n56ml.com > > > > <170121_102m.jpg> > > <170121_109m.jpg> > > _______________________________________________ > > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > > Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. > > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to > change options > > To UNsubscribe from KRnet, send a message to [email protected] > > > _______________________________________________ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options > To UNsubscribe from KRnet, send a message to [email protected] > _______________________________________________ Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options To UNsubscribe from KRnet, send a message to [email protected]
