REFLECTOR: Tractor vs Pusher props [heur]

[Scott Derrick]

My current Catto is 64, and there is plenty of room.

It looks to me that a reduction in ground clearance of 2 inches won't 
matter that much.  I taped a 2 inch stick to the prop and then lifted 
the nose up.  You have to be at a ridiculous angle of attack to hit the 
prop.  I will probably see a bit more abrasion on the tips but thats 
easy to deal with.

Craig said for performance, especially at low speeds the extra 4 inches 
in diameter will help a lot.  I can always trim it down if I feel its 
too long.

Scott



Tom Martino wrote:

>Scott,
>
>My original MT Prop is 164 mm or 64.5 inches.  Do you find 68 inches a
>bit long?  Have you checked for ground clearance?
>
>I am thinking of buying one.
>
>Tom
>
>-----Original Message-----
>From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
>Behalf Of Scott Derrick
>Sent: Wednesday, May 25, 2005 8:17 PM
>To: Velocity Aircraft Owners and Builders list
>Subject: Re: REFLECTOR: Tractor vs Pusher props [heur]
>
>All this talk of props, I just got word from Craig that my new prop is 
>shipping!!
>
>Propeller for Std. Velocity RG 
>68" Diameter x 105" Pitch 
>TSI0-520  325HP at 2700PRM   
>Top Speed at Target RPM-  255mph at 2500rpm  
> 
>Man that is a lot if pitch!! 
>
>Scott
>
>
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