lol! OK sent you a PM

 

And I answerd it.

 

Me me me me me me me me

 

pics would be very generous of you Hymee.

 

Donovan! Heck yes I remember him! I still sing some of his songs! Although I don't put as much nose in my voice as he put in his! Some of the things from those days are a little fuzzy(like they say if you can remember the 60's then you where not there!) RP , you make music? Heck I've been playing the 6 string for over 40yrs!
I even helped take care of Dawyne Allman in the emergency room after he was brought in (unfortunually from his fatal motocycle accident).
Enough rambling. Keep up the good work. Like I said a long time ago. I think you have the best FI idea around for this car.
olddragger

 

OD, I'm learning the 6 and 12 string finally after close to 40 years (got myself a couple of Martins and haven't looked back!). I wonder how many musicians (or wannabe musicians like myself) we have reading this thread.
And I agree, RP has the most promising FI (Heck, I still can't see that abbreviation without thinking "fuel injection") unit for the RX-8. I doubt that I'll ever be able to afford one, but it'll be great just to see them on the street. I always wanted to put a Latham on my Mopar B blocks!

 

While I haven't been playing for 40 years since I'm only 28 years old, I have played guitar for the last 12 years or so. Well, I've been trying to play it for the last 12 years!

 

Ajax, I looked up the cast iron spec and I was close, it is .00067 per inch per 100 degrees F.
Does anyone know how hot the seals get??? Even if you round the numbers up to .001 per inch. say the seal is .5 inche and I don't know that, and say it grew 1000 degrees that would only be .005 less clearence. but it may get alot hotter, I have no idea. Does it see exhaust gasses?

 

Now you've gone and done it: Shameless plug time.

http://www.garageband.com/artist/bureau13

Probably doesn't qualify as music for some of you :D

 

yes richard the seal in question does see exhaust gasses.

 

The only answer I could get out of anyone at sevenstock about side seal clearances was that they have a larger clearance due to heat expansion. Yes, these seals do see 1600+ degree exhaust gasses. The old 13B side seals didn't.

 

Now we're getting someplace. All we need is the size now. Just plug in .0007 times the size in inches. That will be how much it grows and remember it grows in all directions.


RG, remember the BTDC vs ABDC thing? Check your explaination of axial flow on the screw or roots. Better cut down on the cheap wine while tech writing.

 

Did I misinform everyone of something? It is possible that I got confused when typing.

 

[ The twin screw does not move air axially. The roots does. QUOTE] Rotarygod


Couldn't remember which time????
This is it. We don't want to lead anyone down the wrong path, do we.
They were already confused by someone else's explaination.
IE: axial flow.


Also didn't you tell me that you saw 2000 F on your old rotary??
That was probably turbo'd. But supercharged would also raise the temp just not that high. Let's say 1750 because the inlet is that much hotter and it carrys through. Let's also say that the seals are clearenced for max expansion of 1600, any over temp will remove the saftey factor.

Now that would explain the SC engine what happened to the NA engine??

 

Oops I guess the twin screw does move the air axially. Unlike the roots though it moves it from front to back (back toi front depending on your view) as well as top to bottom.

I saw those temperatures running really lean with the temperature probe 6" away from the exhaust ports. My engines also have new exhaust sleeves that were machined that no one else has. The exhaust sleeves on the 13B have a huge area expansion that the gasses flow through. This slows the exhaust down alot and dissipates alot of energy. My sleeves maintain the area of the exhaust ports so that no energy or velocity is lost in the way they are in the stock engine. This holds alot more heat in the system. My numbers are not typical of a 13B. Those numbers were also nonturbo! When a turbo was tried with them, it melted the turbine wheel in a matter of minutes! The blades got hot and folded over, restricting flow. That turbo wasn't using an inconel wheel though. The Renesis will probably get up to about 1750 or so.

 

Are you saying that the seal will see that temp?? That would mean about .010 growth per inch of part.

 

Damn... with all these posts on side seals, I wish I could find my old post on the size, shape and composition of the seals that I put up for RG... oh well. I might just have to find some time to translate that all over again...

 

Ha! Found it...

Apex Seal
13B-REW
2mm thick/ 3 piece
material/ cast iron

Renesis
2mm thick/2 piece
material/ cast iron

Side Seal
0.7mm thick
perpendicular cross section
material/sintered iron

1.2mm thick
trapezoid cross section
material/sintered iron

Corner Seal
Rubber plug

Cast iron plug
DLC (Diamond-like Carbon) coating

Blow-by Cut-off Seal
N/A

material/ductile cast iron

 

Bob/RG,
Would be nice if we could jam someday! I have a lot of friends that play Martins and I have one lady friend that plays a 12 string in a bluegrass band! Now thats interesting. I feel a blues tune coming about fi' ing the 8. (i still think fuel injection also!). My hands are too small for a martin so I have a hand made alvarez (1987 yairi not the production ones). Anyway seems that a little progress is being made concerning the seals issue. I bet its challanging but fustrating having to reverse engineer this stuff. I have a LOT to learn about rotary's but I retire in 5 yrs and I just may get REAL interested then.
This is one of the best threads on this forum. Lot of good mature info sharing. Keep it up guys ! Us ignorant folks appreciate it!
olddragger

 

Does this thread belong in the lounge?

 

Only about half of it! :D

 

Richard I could not open up that message from you, email me directly at gabearias@hotmail.com

Thanks

 

42 pages...

C'mon... we wanna see those triangles spinning & that charger singing!!!!

 

hello

 

Hi!