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Old 10-17-2007, 06:48 PM   #1
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Default Nitro Percentages and what to run in a os .12 cv-r

Hey Guys,

Ive had some people tell me a few different things in regards to Nitro percentages and what to run. I use 25% in my lrp spec 3 but I was told to use a lower percentage for the os .12 cv-r in my AE GT. I have tried 25% in it on the weekend and it seemed to run fine so I'm wondering what the general opinion on this is.
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Old 10-17-2007, 07:24 PM   #2
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I like running 20% .
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Old 10-17-2007, 07:27 PM   #3
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I ran 30% all summer in my .12 cv-r and it's still running great.
If I remember right I was told to shim the head to .030 which I did.
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Old 10-17-2007, 08:57 PM   #4
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run 30% byron race 3000 fuel in all my engines and they are all running killer !!! even in my .12 cv-r in my losi truck (no shimming necessary)
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Old 10-17-2007, 10:08 PM   #5
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Shouldn't need any shims to run 30%. I run TQ Fuel...30% in all my .12s and .21s.
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Old 10-18-2007, 12:17 AM   #6
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I ran traxxas top fuel and byrons, tried the 20% and 33% in the trx 2.5r and the trx 3.3, both were much easier to tune and ran waaaay better on the 33%. I now have a mach (losi version) 427 and it ran like crap with 33%, so I switched to 20% and not only is it running better, it tunes easily and has tons of power.
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Old 10-18-2007, 03:48 PM   #7
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Thanks for the replies, I think i'll now happily run the 25% in it. What about fuel econemy ? What sort of runtimes are you getting with the higher nitro content?
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