flyrotary@lancaironline.net Mailing List Archive

George,

The side seal tolerances are many times greater than the traditional seals. Plus they have a “keystone” shape to them. I have heard that many racers use the longer seals in an attempt to close that gap.

Bryan

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of George Lendich
Sent: Sunday, August 16, 2009 5:35 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Diff Betw Late Model 13B & Renesis

Bryan and Jeff,

I have spoken to a number of people about the Renensis and they all tell me that none of the compression seal sizes( lengths) completely seal against blow-by, hence the need for the extra O-ring type seal in the rotor sides.

There are a number of lengths available and it has been suggest to me to use the longest, as at our usage, as compared to racing, their never going to reach their maximum length. Their length is governed by the fact that their being more exposed the exhaust heat, because of the side exhausts. It's my feeling that that little cut away in the exhaust side ( of the rotor) makes them even more exposed.

I hope that makes sense.

George (down under)

Jeff,

The grooves for the outer water jackets are in the rotor housings vice the side housings.

The rotors have an additional outer ring. Some of the tolerances are not in the DVD due to the fact that these components are unique to the Renesis.

I can get those to you if you decide on the Renesis. Otherwise, pretty much the same.

Bryan

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Jeff Luckey
Sent: Sunday, August 16, 2009 12:56 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Diff Betw Late Model 13B & Renesis

I just watched Bruce Turrentine’s video on how to rebuild a gen 2 13B. (Pretty good video considering it was done by one guy and a tripod – and the price was sure right, $30 delivered.)

I’m considering using a Renesis and was wondering if there are any significant differences or gotchas between the 2 engines that I need to know about.

Also, I’ve been looking for the Shop Manual for a 2004 Renesis/RX-8 and found a couple on EBay. The actual printed manuals cost anywhere from $100-200, but there seem to be electronic versions of these manuals available for <$20. Has anyone used the electronic versions – likes or dislikes?

Given the choice among publishers like Haynes, Chilton, or Mazda, which is best? I would tend to go w/ Mazda but sometimes Japanese manuals can loose something in translation.

Thanks,

Jeff Luckey