stunthanger.com

Speed,Combat,Scale,Racing => Speed Talk => Topic started by: bob whitney on May 10, 2017, 07:40:52 AM

Title: Perky Props
Post by: bob whitney 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

Title: Re: Perky Props
Post by: bill bischoff on May 10, 2017, 07:48:22 AM

Details? Photo? Size?

Guess you made it home OK.  :)

Bill Bischoff

Title: Re: Perky Props
Post by: bob whitney 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

Title: Re: Perky Props
Post by: Carl Cisneros 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

Title: Re: Perky Props
Post by: Paul Smith 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.

Title: Re: Perky Props
Post by: bob whitney 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

Title: Re: Perky Props
Post by: Carl Cisneros on May 11, 2017, 10:17:01 PM

Thanks Bob

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

Carl

Title: Re: Perky Props
Post by: Al Ferraro on May 12, 2017, 07:59:31 AM

Quote from: Carl Cisneros 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

                 APC 6.5x5 is a good starting point.
Al