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Old 07-28-2009, 07:07 PM   #1
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Default how do i switch fuels

how do i switch fuels
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Old 07-28-2009, 07:10 PM   #2
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Step 1. Remove fuel from tank.

Step 2. Refill tank with different fuel.



Seriously, just swap it out, richen the top half a turn, put it on the track and re-tune.
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Old 07-28-2009, 07:10 PM   #3
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just switch and re-tune! if your bumping the nitro%age, you might have to add a head shim if your going up 20% to 30%, or take one out if your going down 30% to 20%.
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Old 07-28-2009, 07:16 PM   #4
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Originally Posted by xlgraphicspro View Post
just switch and re-tune! if your bumping the nitro%age, you might have to add a head shim if your going up 20% to 30%, or take one out if your going down 30% to 20%.
i am im going from trinity 20% to byrons 30% how would i know if i have to add a head shim
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Old 07-28-2009, 07:20 PM   #5
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if you didnt remove any headshims to run 20% then you are already set and ready to go.
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Old 07-28-2009, 07:21 PM   #6
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what engine do you run? I have a O.S.v-spec speed, and regular version. I have 1 head shim and I also use byrons 30%

take your cooling head off and check for copper rings. if it's a turbo plug engine the shim is under your head button.
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Old 07-28-2009, 07:28 PM   #7
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Originally Posted by xlgraphicspro View Post
what engine do you run? I have a O.S.v-spec speed, and regular version. I have 1 head shim and I also use byrons 30%

take your cooling head off and check for copper rings. if it's a turbo plug engine the shim is under your head button.
Your speed and your stock v spec, come with 2 shims. 1 copper and 1 aluminum..
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Old 07-28-2009, 07:33 PM   #8
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i have a rb c6
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Old 07-28-2009, 07:41 PM   #9
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Your speed and your stock v spec, come with 2 shims. 1 copper and 1 aluminum..
sorry, I meant to say that. the aluminum one stays at all times, the copper one stays for 30% of you can chuck it for 20%
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Old 07-28-2009, 08:08 PM   #10
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I took a shim out to go from trinity 20% to sidewinder 30% on my 2.0 rtr
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Old 07-28-2009, 08:59 PM   #11
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Quote:
Originally Posted by wingracer View Post
Step 1. Remove fuel from tank.

Step 2. Refill tank with different fuel.



Seriously, just swap it out, richen the top half a turn, put it on the track and re-tune.
+1 Thats what I'm talking about.
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Old 07-28-2009, 09:37 PM   #12
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Originally Posted by dadsvtechonda View Post
i have a rb c6
C6 comes ready to go for 30%.
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Old 07-29-2009, 07:29 AM   #13
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Quote:
Originally Posted by DiaRh34 View Post
I took a shim out to go from trinity 20% to sidewinder 30% on my 2.0 rtr
shouldn't have done that
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Old 07-29-2009, 07:33 AM   #14
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shouldn't have done that
No you shouldnt


When changing fuel , just let it idle for a half tank, to let the oils from the new fuel clean out the old.
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Old 07-29-2009, 02:37 PM   #15
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I wouldn't mess with the head shims till you run it. Usually, If you need a shim you can hear the engine pre-detonating. It's hard to explain the sound. Almost like a sizzling sound. How many head shims you run has a lot to do with what climate you're running in. It's possible you were running too many already, and switching fuels will put you right where you need to be. Just make sure you don't start to see pitting on the top of the piston, thats a sign of pre-detonation.
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