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I believe all the FD engines (13Brew’s) use solid corner seals with a different looking spring behind them (not wire spring)-it has two ‘paddles’ on the end of a C shaped affair. Marc Wiese From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Chris Barber
Sent: Saturday, November 05, 2011 12:25 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Where's the Buttons? I was missing some corner seals too at my last tear down. I ordered more. It wasn't until after I received them that it dawned on me what the long rubber strips I got with Tracy's kit were for. DOH! Yeah, and they are letting me try to build an airplane.... Seems that I read that the rubber corner seals were there more for emissions and could be omitted or replaces with solid ones. Again, IIRC. Seems I read it in a post from Lynne but hell, it could have been on a "boy racers" websight so please research an verify. CYA does not always mean "Call Your Attorney". Attorney ;-)
Sent from my iPhone 4 Cannot tell what to do concerning your TES "O" rings (I have them also) as I have no operational experience with them yet but considering the hours you have on your engine (And you have been known to "Flog" it)........<:)... I would just go back with TES "O" rings in light of the extra heat load your Turbo adds to the engine........... Concerning the corner seal rubber buttons it seems that they end up reverting back to carbon and lose all elasticity (particularity under high heat) and become useless for their original purpose which was to give slightly increased compression at starter speeds...........I personally will use the solid racing corner seals available from Mazda and other sources.................IMHO Kelly Troyer
"DYKE DELTA JD2" (Eventually) "13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold "TURBONETICS"_TO4E50 Turbo From: David Leonard <wdleonard@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Saturday, November 5, 2011 10:32 AM
Subject: [FlyRotary] Where's the Buttons? I just finished tearing down my engine. I am doing a rebuild for low compression on one of the faces (determined by a change in the force required to pull the prop through on that face and a quiet 'ka-chunk'), and some leaking of combustion gasses into coolant causing occasional loss of coolant if not checked before every flight. Where are the rubber buttons? There are no rubber buttons in any of the corner seals.. not even a residue. Do they usually disappear?? I am pretty sure I recall them being there in the past, or am I mistaken? I used the strip that comes in Tracy's gasket kit. I found a side seal that was stuck at one end. quick clean should fix it. Coolant issue: Not sure I am happy with the TES 0-rings. Yes, they seem to have been very resistent to the heat. In general they are in excellent condition. Except, they have very little elasticity and have moulded to the shape of the chanel. In the hot area, they no longer extend above the top of the chanel and are more or less flush with the top. It seems that in this area they would be exerting minimal sealing pressure there. I am thinking about going back to the stock. Anyone else have a similar experience or heard of this problem? Otherwise the engine is in OK shape. No evidence of overheating. There are quite of bit of chatter marks on the rotor housings, the rotor bearings seems pretty well worn but probably re-usable.
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David Leonard
Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.net
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