Rotary Car Club - View Single Post - Zero clearance side seals round 2. (If you don't mind Barry)

Barry Bordes · 03-09-2016, 11:28 AM

p
[QUOTE=RICE RACING;320079]There is some real dumb and wrong assumptions state above ^

The side seal is NOT constantly forced to one side!@ IF it were it would never wear a path into BOTH corner plugs as it does in reality!

Peter you are incorrect. Anyone who has disassembled a rotary has seen that you have blow-by on only one side of the corner seal. If you see wear on both sides you have set the side seal too tight and the corner seal may fail... (along with pinching the apex seals and adding high wear to the side plates)
You had problems in that area before with NRS corner seals... maybe that was the problem.

The rotor can only go one direction... and parts of it may sweep faster or slower, but all portions are always going forward... rethink your position.

A true ZERO BLOW BY design like I have made needs to be recessed into both corner plugs and not some ghetto cut off wheel doing a straight edge cut leaving a sharp edge too! that will not only seal like total crap but cause a very large stress raiser in the corner plugs = very poor idea.

If you look at the rotor path you will see the side seal rocks back and forth in the side seal groove on each minor dimension of the rotor housing points, thus it slams from one side to the other in the side seal groove! it needs to be recessed into BOTH, so not only is the clearance NOT zero as in the un thought out claims by others who have butchered this mod, but its also not the correct way to do this either as shown above.

Here is how its done right! below. This to work properly needs a bespoke material side seal and corner seal, as the stock parts are failure prone as is.
There is clearance to all parts! and needs to be done by not an engine builder wannabe but by toolmaker/fitter/turner who have precision parts fitting qualifications and experience, NOT GOOGLED!@
QUOTE]

03-09-2016, 11:28 AM	#11
Barry Bordes Rotary Fanatic Join Date: Feb 2008 Location: Slidell, LA Posts: 191 Rep Power: 18	p [QUOTE=RICE RACING;320079]There is some real dumb and wrong assumptions state above ^ The side seal is NOT constantly forced to one side!@ IF it were it would never wear a path into BOTH corner plugs as it does in reality! Peter you are incorrect. Anyone who has disassembled a rotary has seen that you have blow-by on only one side of the corner seal. If you see wear on both sides you have set the side seal too tight and the corner seal may fail... (along with pinching the apex seals and adding high wear to the side plates) You had problems in that area before with NRS corner seals... maybe that was the problem. The rotor can only go one direction... and parts of it may sweep faster or slower, but all portions are always going forward... rethink your position. A true ZERO BLOW BY design like I have made needs to be recessed into both corner plugs and not some ghetto cut off wheel doing a straight edge cut leaving a sharp edge too! that will not only seal like total crap but cause a very large stress raiser in the corner plugs = very poor idea. If you look at the rotor path you will see the side seal rocks back and forth in the side seal groove on each minor dimension of the rotor housing points, thus it slams from one side to the other in the side seal groove! it needs to be recessed into BOTH, so not only is the clearance NOT zero as in the un thought out claims by others who have butchered this mod, but its also not the correct way to do this either as shown above. Here is how its done right! below. This to work properly needs a bespoke material side seal and corner seal, as the stock parts are failure prone as is. There is clearance to all parts! and needs to be done by not an engine builder wannabe but by toolmaker/fitter/turner who have precision parts fitting qualifications and experience, NOT GOOGLED!@ QUOTE] __________________ GOD the Incomprehensible Obvious (www.frksj.org)