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Message
Hi Yvon
Had not heard from you in so
long, I was afraid you were no longer a Rotary Flier.
Ref Monster Prop. Most of us flying RV series
aircraft have been using a propeller that was around 68" in diameter and 72" in
pitch or 68x72. When Tracy Crook changed his gear box ratio from 2.17:1 to
2.85:1 the torque at the prop end of the gear box was considerably increase but
turned slower. Tracy figured that turning slower meant a larger diameter
prop was necessary to provide the same thrust and then he decided that with that
much more of a torque increase he could also have more pitch. Therefore,
he went from a 68x72 prop to a 74x88 prop, I am going to try a 76x88 or a
propeller that is 8" longer than my previous propeller and with 16" more
pitch. Therefore the reference to a Monster (LARGE) propeller.
Tracy reports tremendous increase in take off
acceleration and climb. He reported still having 1600 fpm climb at
10,000MSL!. If I can get 2000 fpm at sea level, I'll be happy with
it.
So several of us decided to following in his foot
steps.
Good to hear from you. How are things
going??
Ed
Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC
----- Original Message -----
Sent: Tuesday, August 10, 2004 11:29
AM
Subject: [FlyRotary] Re: Better hurry
Ed
Gentlemen, What is a monster prop, please?
Yvon
----- Message d'origine -----
Envoyé : 10 aoūt 04 09:32
Objet : [FlyRotary] Re: Better hurry
Ed
Great to hear, Rusty. Looks like the 2.85
is going to get some additional data point soon.
Well, Laura, shipped my drive Friday, so should
be here today or tomorrow. Already have the monster prop, now awaiting
a new spinner for prop. Cleaning up my software for the EFI fuel
monitor, finished the self-calibration routine and now need to find an LCD
small enough to fit in a 2 1/4" instrument case and still readable from
across the cockpit.
Ed
Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC
----- Original Message -----
Sent: Tuesday, August 10, 2004 12:41
AM
Subject: [FlyRotary] Better hurry
Ed
I just got the
tracking number for my monster prop today, and it should be here
Friday. Tracy's shipping my C drive tomorrow, and he shipped the
software updates today. Won't be long now :-)
Rusty
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