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Old 05-11-2007, 02:01 PM   #16
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The manual for the OS Max .21 V-Spec recommends 20% nitro but they do supply an extra head shim in the box if you wish to use 30%.
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Old 05-11-2007, 02:05 PM   #17
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My OS .21 VG says it was rated to 30% in its stock configuration. I run 25% byrons and was thinking of going down to 20%. Race fuel only. I tried the RTR fuel and didn't like it, but it could have been the engine (Mach .26) and glow plug. (MC59)
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Old 05-11-2007, 02:10 PM   #18
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i been told that 30% will wear out your motor fast.....
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Old 05-11-2007, 02:57 PM   #19
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Quote:
Originally Posted by Cain
My OS .21 VG says it was rated to 30% in its stock configuration. I run 25% byrons and was thinking of going down to 20%. Race fuel only. I tried the RTR fuel and didn't like it, but it could have been the engine (Mach .26) and glow plug. (MC59)
I didn't make it up. OS says 20% in their V-Spec manual.
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Old 05-11-2007, 02:58 PM   #20
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Quote:
Originally Posted by MADMAN23
i been told that 30% will wear out your motor fast.....
The thing that really wears out your engine fast is dust, very fine abrasive dust.

Of course using 5 to 10 gallons of 30% would do it also.
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Old 05-11-2007, 03:37 PM   #21
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i'm talking VG not V-spec. Its possible thats what they say, no doubt.
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Old 05-12-2007, 09:29 AM   #22
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The higher the nitro content the better. The engine will run smoother and cooler because the methonol is what actually cools the engine. And it's easier to tune.
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