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Engine basics => Engine set up tips => Topic started by: ray copeland on December 06, 2010, 10:20:40 PM
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What differences can i expect if i decide to try a gallon of 5% nitro vs my usual 10% , 22 percent oil 50/50 blend with a couple extra ounces of castor added? Should i expect longer run times, any lack of power that i would notice ? What about any help with profile runaways ? My mix of engines are the usual fp's, la's, foxes and a few thunder tiger gp's. Thanks , Ray
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Ray 5% will give you better mileage and better for colder weather. 10% is better in warmer weather as it has more oxygen in it but you use more fuel and it needles a little better Alan
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You probably don't need the extra castor either, unless the engine you are using is an old McCoy or 35S.
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What differences can i expect if i decide to try a gallon of 5% nitro vs my usual 10% , 22 percent oil 50/50 blend with a couple extra ounces of castor added? Should i expect longer run times, any lack of power that i would notice ? What about any help with profile runaways ? My mix of engines are the usual fp's, la's, foxes and a few thunder tiger gp's. Thanks , Ray
Significantly reduced power (have to run leaner to get the same power), and some likely difficulty starting in cold weather. Slightly softer break. And significantly better fuel mileage.
Brett
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Ray, I would save the extra castor until needed(Fox, McCoy, etc). For modern engines 22% oil should be more than enough. Adding some extra castor can help tune the engine run. On the LA engines it can smooth out the run and soften a 4-2 break. Especially in hot weather it seems to tame things down(regardless of nitro).