Fox .35 ABC P/L conversion ?

Hi ,

I'm wondering if converting my Fox .35's to an ABC piston and liner will allow me to change the type of fuel mix , from a high castor content to an option of a synth/castor blend ?
I ask this , due to the fact that I live in an area where there I have difficulty finding a fuel that suits the iron P/L combo (the best I can do is PowerMaster 5%to 10% nitro and 18% lube) . According to the can label the fuel contains more synth lube than castor , but the label doesn't specify the separate %'s of lube . I know I can supplement castor content .
Any comments would be greatly appreciated

Thanks in advance ,

Rob Killick

Rob,
If you are going to convert your Foxes, get the new ceramic liner assembly. Lighter than the ABC assembly and seems to have better power. A cheaper fix is to buy some Sig castor oil and add it to the available fuel. If you add enough to get to about 28% total oil you should be OK.
Steve

>Hi ,
>
>I'm wondering if converting my Fox .35's to an ABC piston and
>liner will allow me to change the type of fuel mix , from a
>high castor content to an option of a synth/castor blend ?
>I ask this , due to the fact that I live in an area where
>there I have difficulty finding a fuel that suits the iron P/L
>combo (the best I can do is PowerMaster 5%to 10% nitro and 18%
>lube) . According to the can label the fuel contains more
>synth lube than castor , but the label doesn't specify the
>separate %'s of lube . I know I can supplement castor content
>.
>Any comments would be greatly appreciated
>
>Thanks in advance ,
>
>Rob Killick

Rob,
Using the ABC Piston and Liner in the Fox 35 will likely reduce the necessity to run quite so much castor in the fuel. The engine is however still a plain bearing engine and the crank and case bearing require significant lubrication.
In other words.... I have run 22% half synthetic/half castor in ABC Foxes quite successfully but would not recommend going as low as 18% and definitely not all synthetic.
I'm sure others will have input on this and some may differ but I will stand by this conclusion.
Marvin Denny is one man I would listen to carefully on the subject of Fox 35s and of course Randy Smith and our host Leonard. You will likely get some questionable comments from some others however.

Randy C

PS: Edited to explain my comments. It is not my intention with my above comments to denigrate anyone elses opinion. It's just that this particular subject comes up every once in a while and some folks can be very opinionated about it. Usually leads to much discussion.

The con-rod bottom-end bearing will wear out. Drill a small hole in the bottom, going into the hole for the crankpin. Champfer out the corners with an Xacto knife, and you can run it on 20% BY VOLUME castor oil.

I don't trust this fuel manufacturer. Too secret, and not enough descriptive detail. You'd better assume you have about 14% honest volume of some kind of lubricant. Add another 10% castor, to be safe, or buy Fox or Sig fuel.

PS: Didn't Powermaster make a 28% castor oil fuel at one time?

>PS: Didn't Powermaster make a 28% castor oil fuel at one time?

They still list an all castor 29% blend on their website available in either 5% or 10% nitro. Look for GMA Stunt Fuels.

>The con-rod bottom-end bearing will wear out. Drill a small
>hole in the bottom, going into the hole for the crankpin.
>Champfer out the corners with an Xacto knife, and you can run
>it on 20% BY VOLUME castor oil.
>
Stay with 22% just for safety.

>I don't trust this fuel manufacturer. Too secret, and not
>enough descriptive detail. You'd better assume you have about
>14% honest volume of some kind of lubricant.

All powermaster I know of is mixed by volume, 18% will only need 2 to 4% (roughly the same numbers in ounces by volume)

Might consider the high Zoot crank if you want to go to the limit.