Magnum GP .15 RC

It looks like an OS. Is it an OS knockoff?
Rusty

lol, I think all the Magnum/Thunder Tiger engines are O.S. knockoffs!

I've got that engine in an old, Hobby Shack Cessna 150 foam ARF. The Thunder Tiger Magnum GP15 is a really nice engine, powerful, pulls this beast with authority.





Photos courtesy of Gary Jones, MADS R/C Club, Clovis, NM.

Another model that suits and engine (or the other way around!).

What do you use to stop the fuel damaging the foam?

It was my understanding, that the designer of these engines originally worked at OS. Upon leaving that company he took many of his designs that were specific to him. He was able to produce these engines and many were badged with his new company logo. Some of the designs were actually improved upon such as true ABC setups vs the traditional ABN that OS uses. Is the Magnum GP .15 a true ABC engine? I know that the ball bearing variants are. I also know that many of the parts interchange with the Magnum vs OS. We use a lot of these and the Norvel BB for .15 size combat.

I looked at my instruction manual for the Magnum GP's. To clarify, interestingly enough, the back of the instructions has Thunder Tiger as the manufacturer. There is no mention on the engine box or instructions whether ABN or ABC is used. The current lot of GP engines listed under the Thunder Tiger name are ABN.

ian1954 wrote:Another model that suits and engine (or the other way around!). What do you use to stop the fuel damaging the foam?

It is standard white foam, expanded polyurethane polystyrene I guess. Haven't had any problems with fuel damaging it.