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Bobby,
I know your planning only normalizing with the
Turbo, but my concern with the 10:1 high compression rotors is that you might
get into detonation - especially without an intercooler.
Then again I'm no expert, that why I would like to
know the safe boost level as well.
I recommended the 3mm apex seals because of my
concerns of detonation, not so much the loss of hp.
George ( down under)
George,
Mazfix and Mazsport are both boosting to 280hp at the
wheels. http://mazfix.com.au/perfproducts/rx8_upgrades.html.
Pettit Racing is seeing 270+ with 5-8#'s http://www.pettitracing.com/rx8/index.htm
My goal has always been to match the IO540 at 8000ft and have a much
lighter plane with new engine. No doubt I will be giving up some HP
without the intercooler. One percent for every 10 degrees I think.
If my cooling ducts and exit area work as planned I may add an intercooler.
The goal now is to get the engine started and flying by summer.
Bobby
RV10
Bobby,
I would be interested to see what boost is safe
also. You might consider an intercooler!
I assume you are using it on a RX8 engine( i.e.
10:1 ), if so, you could always consider going to 3mm apex seals, if you feel
it would be safer.
George (down under)
Not
much to tell Rob. It's an Eaton M62 4th gen. http://www.capa.com.au/eaton_mp62_4th.htm
My notes show the weight at 25 lbs but I am not sure if that included
mounting brackets. If everything goes as planned I should be able to
fire it up in January. The plan is to use it for normalization or 1-2 psi of
boost if the discharge temps are not to high. It has a 1" internal bypass that
provides a intake air path around the screws so it is yet to be seen what
effect this will have on temps.
Does anyone have any real data as to maximum safe
intake temps with 10:1 rotors and 2mm seals?
Bobby
Bobby
Tell us a little about your supercharger. What
brand? How much? How heavy? Have you run it yet?
Thanks.
Robert
20B in a BD4
Robert Bollinger FM1099 MUM Fairfield, IA 52557 rob@mum.edu Home
(641)472-7000ex2068 Cell (641)919-3213
----- Original Message -----
Sent: Monday, October 29, 2007 5:09
PM
Subject: [FlyRotary] Re: MAP port
location \
Looks like the
consensus is to place the MAP ports away from the runners. I will try the
discharge duct of the supercharger for both MAP and the Grand Rapids EIS
temperature probe. Looks like the EC2 temperature probe should not be
place after the blower since it leans fuel at higher air temps. It will go
after the air filter and before the throttle body.
Thanks,
Bobby
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