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General control line discussion => Open Forum => Topic started by: Phil Coopy on February 23, 2006, 05:44:34 PM

Title: Prop Sizing?
Post by: Phil Coopy on February 23, 2006, 05:44:34 PM

I have been experimenting a little with prop sizes on my LA40 powered Twister. Normally I run an 11/5TF but I tried an old 12/4 TFsuper-M and it really made it come alive.......problem is I don't think that TF makes that line any longer and I only have that one.  Do any of youse guys out there know of an equivalent? And does 12/4 seem normal for that engine/plane combo. I might add that I am using 25%nitro Omega brought up to 21% lube with BeNol castror.

Phil Coopy

Title: Re: Prop Sizing?
Post by: Joey Mathison 9806 on February 23, 2006, 08:23:10 PM

try your hand at making a mold of that favorite prop, then you can have as many as you want.plus you can use differant materials to make the new ones with.fiberglass or carbonfiber.

Title: Re: Prop Sizing?
Post by: Ironbomb on February 25, 2006, 03:55:57 AM

If you like that prop so much, measure its pitch every 1/2 inch, so you can duplicate it.  Or, can you find a larger diameter and cut it down?

good luck with your search

Greg

Title: Re: Prop Sizing?
Post by: Garf on February 25, 2006, 07:15:43 PM

I have 3ea. TF Super-M 13-5 props I will part with for a price. 2 are untouched, the 3rd has faint drive washer marks on it.

  "SAVE ALL THE PIECES"-Phil Brown

Title: Re: Prop Sizing?
Post by: Dennis Pedersen on February 25, 2006, 08:17:20 PM

Here is a prop that is worth a try .This is a 12-4 Zinger Pro.I run a LA 40 lots and have found a 11x4 APC to be my favorite so far but with 10% fuel.

  http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXESM2&P=0

Title: Re: Prop Sizing?
Post by: Steve Helmick on February 26, 2006, 05:03:08 PM

Several locals swear by the APC 10.5 x 4.5 for .40LA's.  8) Steve