----- Original Message -----
Sent: Friday, June 26, 2009 7:44 AM
Subject: [FlyRotary] Fwd: Re: Engine
problem/ I need help
----- Original Message -----
From:
<candtmallory@cebridge.net>
To:
'Ed Anderson' <eanderson@carolina.rr.com>
Sent:
Fri Jun 26 0:07
Subject: Fwd: Re: Engine problem?
Thanks all for the quick responses!
I was reluctant to run the engine again, but it sounds like that is what I
need to do to get more data points. I'll go out tomorrow and do some
lower power runs and see what I get.
To answer some of the questions:
I have about 1.5 hours total on the engine right now. I've done the
mode 3,2,1 and 9 (auto tune). Everything looked good. With about 1
hour engine time, I started teh high power runs. I was at about 30 min
total high power time when this happened.
RD1C (2.85:1) PSRU with a huge CATO prop.
Standard Renesis Red and Blue injectors, I'll have to measure the throttle
body, the exhaust is short. It comes out and faces fron, then turns
180 down and aft to the Hushpower II muffler, then 90 down and out the
cowl. I'll take a pic tomorrow.
I stopped the high power runs when H2O got to 200*, oil was always about
10* cooler.
I also had to do the short runs to fill the radiator. I checked it
for full by feeling heat at the top.
I'll give the oil pressure another
look tomorrow, and get exact numbers at different rpms.
No noticable clank, bang, etc. The rpm just dropped off 200.
THanks,
Chris
On Thu Jun 25 23:09 , 'Ed Anderson'
<eanderson@carolina.rr.com> sent:
Hi
Chris,
Need some more particularizes
about your installation.
So its really hard to decide
what might be the problem without more data. I presume as best you
could tell nothing happened (clank, bang, backfire) when this unexpected
reduction in rpm occurred?
One thing you might want to
check is your ignition timing static timing alignment. IF the clamp
bolt on the distributor or I believe the Renesis use a pulley ignition
timing sensor becomes loose during the run and the timing shifted that could
cause such a sudden change. Just another thing to
check.
The first thing is to determine
whether you really have a problem or did something change, fuel flow, air
flow, muffler? Another possibility is if the heat stress caused your
muffler to partially collapse, that could cut your
power.
Best
Regards
Ed
Ed
Anderson
Rv-6A N494BW Rotary
Powered
Matthews,
NC
eanderson@carolina.rr.com
http://www.andersonee.com
http://www.dmack.net/mazda/index.html
http://www.flyrotary.com/
http://members.cox.net/rogersda/rotary/configs.htm#N494BW
http://www.rotaryaviation.com/Rotorhead%20Truth.htm
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