Steve,
On a cold morning when I can see 19-20 gph on take off
at 6200 rpm, I calculate based on fuel burn rate and an air/fuel ratio of
12.65:1 that I am probably producing around 180-185 HP. On hot days
based on fuel burn of 16.5-17.0 GPH, I calculate around 165-170
HP.
The fastest I've ever had the Rv-6A was 200 mph TAS
burning round 13.25-14.5 GPH.
But, none of this was done on a dyno - its based on fuel
burn and rpm and we all know a rotary can pass through more fuel than is
producing power. Anyhow, it’s the best estimate I have.
Ed
Sent: Tuesday, August 21, 2012 10:31 AM
Subject: [FlyRotary] Re: Prop revs
Ed
Out of interest, what do you think you are getting in HP from your 13B
and at what RPM?
Steve Izett
On 21/08/2012, at 9:15 PM, Ed Anderson wrote:
I would say you have winner. Does of
course depend on what prop load you were pulling during static run.
I have a fixed pitch 74x88 and a well-tuned older 13B
and the best I have ever got static - was 6200 rpm on a cold day.
Normally, I get 6000-6100 rpm.
So depending on your prop, it looks like you are doing
great for static rpm.
Ed
Sent: Monday, August 20, 2012 9:48 PM
Subject: [FlyRotary] Prop revs
All,
Looks like I am finally connected
after many attempts.. I have a P ported renesis in a glastar that is
ready to fly. Tuning the motor yesterday to find that I cannot get the
motor revs over 6300. I suspected the prop (prince fixed) is too big,
but am assured that that is normal as a static load. Lonnie suggests
that once moving the extra revs will appear. How do I tune the motor
for the top end revs? Any advice? Neil.
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Version: 2012.0.2197 / Virus
Database: 2437/5212 - Release Date:
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