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I think there must be a typo in the manual, I rechecked it this morning and is reads 2150RPM. Instead of 2150 RPMs on the prop I am thinking it should be 2550RPMs for a 76inch prop for a tip speed limit of 850fps equating to 7250 engine RPMs. I will call the manufacture on Tuesday to verify my calculations.
I appreciate everyone's comments.
On Sun, Sep 4, 2011 at 8:07 AM, Charlie England <ceengland@bellsouth.net> wrote:
Wow. How big is it?
On 09/03/2011 10:50 PM, coastiefamily4 wrote:
Tip speed
On Sat, Sep 3, 2011 at 9:18 PM, Kelly
Troyer <keltro@att.net>
wrote:
Is the rpm limit because of diameter (tip
speed) or a structural blade limitation
?..............
Kelly Troyer
"DYKE DELTA JD2" (Eventually)
"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold
"TURBONETICS"_TO4E50 Turbo
Sent:
Saturday, September 3, 2011 6:06 PM
Subject:
[FlyRotary] Re: 20B Tuning
The prop is adjustable, it is hydraulically
controlled. I current have it set to the fine
pitch setting.
On Sat, Sep 3, 2011 at 4:51 PM, Bobby J.
Hughes <bhughes@qnsi.net>
wrote:
If it's adjustable you may need more
pitch. A 2150 rpm limit seem very low.
Bobby
Sent from my iPad
This is not full throttle, I
have to stop at 6000 RPMs do to
the 2150 RPM limit on my prop. I
am using a VARI PROP, it is great
so far. I have plenty of
throttle, just prop limited.
On Sat, Sep 3, 2011 at 3:44
PM, William Wilson <fluffysheap@gmail.com>
wrote:
23.3 is
just about exactly what would
be expected.
Perhaps the throttle is not
opening all the way? You
would have to have a pretty
convoluted intake to lose 3"
of pressure in it.
On Sat, Sep 3, 2011
at 3:40 PM, <bktrub@aol.com>
wrote:
At what density
altitude was that
measured? Maybe
your MAP needs to
be calibrated.
Brian Trubee
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