Where have a 4-stroke engine with power about 25hp?

[seahawker]

I need a 4 stroke engine power about 25HP,but I find most of engines at this power level are 2 stroke. Who can tell me which engine can I chose?

[ninja21m]

You will probably need to convert a non R/C 4 stroke engine to work with RC. Most large scale engines are of the 2 stroke variety.

Ninja21m

[seahawker]

Can you supply me some informaiton such as manufacturer links about non r/c 4 stroke engine?

[ninja21m]

In trying to find a engine of this size you can look at your garden variety lawn mower and chainsaw store. You just need to find a motor that has the proper crackshaft config for what you are trying to do. Also if you google engien conversion kits with different vairables you will find companies who make the conversion kits and I am sure they will in turn recomend where to find the base engines they modify.

Good luck,

james