Magnum .91 4 cycle

[rc.maniac]

I am getting a Magnum .91 4 cycle for my Trainer. I am looking to use the Cool Power Fuel for this engine. Any comments on if this is good or bad? Anyone have any personal experience with this fuel?

Thanks,

Joel

[ivanc]

CP is OK but I'd recommend Omega - either 10% or 15%.

FYI CP has 17% oil by volume and all of it is synthetic. Omega has 18% oil - 3% castor and 15% synthetic. The small amount of castor oil provides additional protection during lean(-ish) runs.

Ivan

[Steve Guinn]

I agree with using a fuel that contains some castor.
In my opinion, an all synthetic fuel should only be used by an experienced engine tuner.

[chashint]

I have several of the Magnum 91 four strokes, they are good engines.
What trainer are you going to put it on ?
Do you have someone to help you learn to fly the plane ?
Charlie

[rc.maniac]

This is the specific fuel I am looking at. Its a 30 Caster/ 70 Synthetic blend on the oil side.
http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXGHC5&P=0
I just need to fine a 10% equivalent for break in.

I am putting the engine in a Hobbico Hobbistar 60.

[Steve Guinn]

The Wildcat would be my choice because of the lower castor content...
http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXGHC1&P=7
http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXA307&P=7

Morgan and Wildcat are the fuels of my choice.

[chashint]

I don't know where you guys are located but I think all of that fuel is expensive.
You might check here if you are interested in an alternative fuel source.
http://www.ritchsbrew.com/rb.html

[Steve Guinn]

You're correct, but I don't purchase my fuel from tower.
Can't beat their product information. ;)

[ivanc]

Fuel is expensive at Tower. They also charge additional $20 per case (4 gallons) "hazardous" shipping fee. I buy 10% Omega at the LHS for $13-$14 per gallon.

Ivan

[chashint]

You're correct, but I don't purchase my fuel from tower.
Can't beat their product information. ;)

You are right about the product info.
Just trying to help save some money.

[Steve Guinn]

Thanks for that. Some guys don't have an LHS.
I normally get a couple of cases of WC 10/18 during the spring fuel sale at J&C hobbies (my LDHS LongDistanceHobbyShop) in Pittsburgh. $44 per case.

[Kow]

Thanks for that. Some guys don't have an LHS.
I normally get a couple of cases of WC 10/18 during the spring fuel sale at J&C hobbies (my LDHS LongDistanceHobbyShop) in Pittsburgh. $44 per case.

That's pretty good! My NSLHS (Not so local hobby shop, Venture Hobbies) Has Wildcat 10/18 for $13 a gallon. I haven't asked yet about a case price.