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High and Low speed settings for HPI 21 Big Block

Discussion in Nitro RC Talk forum, started by Speedbuggy9.

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Unread 5-29-2004, 11:40 PM   #1
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High and Low speed settings for HPI 21 Big Block

I have a OFNA Ultra LX Pro buggy with a HPI 21 big block with a Nova Racing Head on it. I started trying to adjust on the high speed and low speed needles not having any idea what I was doing. Now I have turned them so much that it is all out of whack. I was wondering if someone out there might know what the factory settings might be or what I should do to get it back on track?

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Unread 5-29-2004, 11:57 PM   #2
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Have you tried HPI website? I would close the HSN and then turn it out 3 1/2 to 4 turns out and the LSN turn it till it's flush.
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Unread 5-31-2004, 10:25 AM   #3
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The above link is to the HPI page from their manual on the HPI Nitro Star .21BB. It lists the needle settings.

CLICK HERE for the entire manual.
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