|
|
>From the Mazda literature they mailed out: 2 models of engine -
- Standard Power (4 port) 210hp at 7200 rpm (rev limit 7500);
- High Power (6 port) 250hp at 8500 (rev limit 9000)
Dave Atkins is driving a Standard Power RX-8 and says hp is about 197. This
is down 13 from literature.
This is consistent with what Ed reports his reply to this - the High Power
is down 20 or so to approx 230.
Both are 10:1 compression. No port overlap between exh & int. Supposed to
be cleaner exhaust (had to be to get back into US under current rules - the
1997 or so revision). Supposed to have better fuel economy - but no numbers
given for comparison or evaluation. Would be nice to see the bsfc charted
along with rpm & torque, and for a sample of cruise power settings -
something less than full throttle "max power" condition usually tested on
the dyno.
Here's the specific info on weight in the Mazda literature: 303 pounds vs
344 for "last generation" (twin turbo RX-7? - are they claiming the
elimination of the twin turbos as part of the wt reduction?). "Rotor weight
is cut from the previous generation's 9.5 to 8.2 lb., a reduction of almost
14 percent. The Renesis flywheel is some 20 percent lighter, . . ."
David Carter
----- Original Message -----
From: "JJ JOHNSON" <JJJOHNSON@ACCESSCOMM.CA>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Tuesday, November 18, 2003 11:19 AM
Subject: [FlyRotary] Re: Renisis
Question for the list. I've seen lots of numbers thrown out there as to how
much power this engine is 'supposed' to produce. I'm wondering if anyone has
some concrete numbers as to how much 'continuous' hp's one can expect at
what rpm [what is the max continuous RPM recommended?]and at what specific
fuel burn? Also can this engine be turbo'd? I understand from the Factory
[in the Rx8] its NA. Tracy's 2.85:1 unit should work on this engine?? As
well as his electronic gizmo's? How far is this engine as far as weights
[installed] from the 13B? I've got lots more but lets start there. [Or
maybe someone has a web link they can pass on that helps w/ these questions]
I apologize if some are these [ I suspect they probably are] redundant.
Thanks
Jarrett Johnson
|
|