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Author Topic: Perky Props  (Read 2581 times)

Offline bob whitney

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Perky Props
« on: May 10, 2017, 07:40:52 AM »

 getting ready to lay up some Perky Props for this year, if there is any intrest I could have some for sale at Brodaks. $10 each or 3 for 425
rad racer

Offline bill bischoff

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Re: Perky Props
« Reply #1 on: May 10, 2017, 07:48:22 AM »
Details? Photo? Size?

Guess you made it home OK.  :)

Bill Bischoff

Offline bob whitney

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Re: Perky Props
« Reply #2 on: May 10, 2017, 12:28:12 PM »
Bill, check with your partner ,he has one

slowly working on the molds, just got some carbon today

Bill sorry Hemple  has one
rad racer

Offline Carl Cisneros

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Re: Perky Props
« Reply #3 on: May 10, 2017, 07:36:56 PM »
Bob

I would like a couple props.
Especially for Cox Conquest 15.
Any help on dia and pitch would be greatfull.

Will be at Brodaks. Entering the Sportsman Stunt Speed there.

Carl
Carl R Cisneros, Dist IV
Control Line RB

Offline Paul Smith

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Re: Perky Props
« Reply #4 on: May 11, 2017, 07:02:59 AM »
I ran Cox Conquests in F2D for a long time.  Without going all high-tech the prop procedure was to start with a 7/4 that would stay in one piece and trim it down until the engines goes the RPM you want.  It seemed like 23,000 was the breaking point for a Conquest.  Of course that was for 4-minute runs, not 40 seconds.

Back when we could run unlimited nitro in F2D the Nelsons beat the the Cox because they would tolerate a lot more nitro.  But in Perky with 10% nitro and only needing run 40 seconds, a Cox might be a little closer to competitive.

40 seconds is 90 MPH.
Paul Smith

Offline bob whitney

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Re: Perky Props
« Reply #5 on: May 11, 2017, 10:09:34 PM »

I have a carbon 7/4 racing prop that would work. will have a couple at brodaks. also a narrow carbon rev-up 7/6 ccopy
rad racer

Offline Carl Cisneros

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Re: Perky Props
« Reply #6 on: May 11, 2017, 10:17:01 PM »
Thanks Bob

Look for guy with the BLUE #48 ball cap. That will be me.

Carl
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Offline Al Ferraro

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Re: Perky Props
« Reply #7 on: May 12, 2017, 07:59:31 AM »
Bob

I would like a couple props.
Especially for Cox Conquest 15.
Any help on dia and pitch would be greatfull.

Will be at Brodaks. Entering the Sportsman Stunt Speed there.

Carl

                 APC 6.5x5 is a good starting point.
Al

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