REFLECTOR: Tractor vs Pusher props

[Scott Derrick]

No, my current one is 64, my new on is 68, all below applies.

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.



Tom Martino wrote:

>I'm sorry,   I read the following and assumed the prop was 68" ... maybe
>a misprint!
>
>  
>
>>Propeller for Std. Velocity RG
>>68" Diameter x 105" Pitch 
>>TSI0-520  325HP at 2700PRM   
>>Top Speed at Target RPM-  255mph at 2500rpm
>>    
>>
>
>
>
>-----Original Message-----
>From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
>Behalf Of Scott Derrick
>Sent: Thursday, May 26, 2005 8:35 PM
>To: Velocity Aircraft Owners and Builders list
>Subject: Re: REFLECTOR: Tractor vs Pusher props [heur]
>
>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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>>
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