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Old 09-09-2019 | 01:57 PM
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rcjetflyer0718-RCU
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From: Fontana, CA
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Originally Posted by Hydro Junkie
Are you sure about using a 9X7?
I have a 25FP and the instruction book recommends using a 8X6, 9X5 or 9X6 so using a 9X7 sounds a bit small. I'd be looking at something in the lines of a 10X5 or 6.
18% oil would be fine for your 40FP. In fact, that's what I run in my boats, 18% oil with 50% nitro, never had an oil related problem. Then again, my boat engines run at 25K+ RPM so more oil is a good thing
9X7 same load as 10X6 plus more ground clearance. Sleeve engines ( non ball bearing) require fuel with high amounts of castor oil, read the instructions if not they will overheat.
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