Those were RV-4 numbers. RV-8 numbers are about the same, fuel burn is about .5 GPH higher than on -4 at the same speeds, it just goes faster if you use the power available while burning lots of fuel at those speeds above 224 mph. Those are not really useful throttle settings. Extra power on the -8 is mainly used for Higher ROC. Almost 4000 FPM when solo & light fuel load.
Tracy
Sent from my iPad
Tracy,
I assume that you are talking about the
RV-8 with the 20B here? Could you update us with the numbers for both
aircraft?
Bill
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of Tracy
Sent: Friday, December 13, 2013
6:06 PM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Re: 2 cycle
premix
I typically cruise at 5400 - 5600 rpm. WOT at top speed (224
mph) rpm is 7250.
If you are happy with 6000 for take off, What rpm do you cruise at?
Did you ever manage to get the monitor to record litres?? Neil.
Sent: Thursday, December 12,
2013 9:33 AM
Subject:
[FlyRotary] Re: 2 cycle premix
Using a 74 x 88 2blade
on my Renesis. I get about 6000 on takeoff so I would not say you have
too much prop. possibly too little if that 6800 rpm is
accurate. 1800 EGT is not unusual at peak EGT & WOT.
finally flying again, but my prop is too big. It is a 70” dia by 90 inch
pitch. Max revs on takeoff is about 6800 and the EGT is pushing over the
1850 degrees. Obviously the prop is too big as revs are restricted and
the motor is working too hard hence the EGT. What size props are you
people running?? 2 rotor renesis. Neil.
Sent: Thursday, August 08,
2013 7:12 AM
Subject:
[FlyRotary] Re: 2 cycle premix
I use the same mix,
but at closer to 1 oz/gal. Why? That is what Tracy does. Dont think it is very
critical over the short term. I have gone without oil for a tank or two
when I didn't plan well. I have also put multi-weight aviation engine oil
in (at .5 oz/gal) on one occasion when I forgot to bring along any 2-stroke oil
at all.
On Fri, Jul 26, 2013
at 11:39 AM, Bill Bradburry <bbradburry@bellsouth.net> wrote:
I use the same mix as Dennis but at the rate of 3/4 oz/gal in
non-ethanol auto gas. My engine is a Renesis with 70 flight hours.
Bill B
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]
On Behalf Of Clouduster
Sent: Friday, July 26, 2013 9:17
AM
To: Rotary
motors in aircraft
Subject:
[FlyRotary] Re: 2 cycle premix
I use a 50 - 50 mix of MM and WalMart 2 stroke @ 0.50 oz/ gal.
Mixed in auto gas. My engine is a Renesis with 500 +hrs.
Dennis H.
Sent from my iPad
For those of you who are actually flying and have some time on
your rotaries and are using Pre-mix 2 cycle oil:
1) what oil are you using
3) what ratios are you using
4 where is the best place to get it
--
David Leonard
Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.net
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