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RC-Monster Mike · 05.20.2005, 06:22 AM

I am right there with you! I don't think you will get a 30 minute runtime with 4000mah packs without a battery change or so. If you use high enough voltage, you can get a pretty good runtime with 4000 mah, especially on a short track with low gearing. For a 30 minute main, you will also have the challenge of keeping the motor cool (think fan, heatsink etc.), especially in the summer. A large motor should be in the cards (larger than the "s" Feigao or basic xl). I am thinking "xl" or a nice 1940 Lehner.

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RC-Monster Mike Site Owner Offline Posts: 4,915 Join Date: Nov 2004 Location: PA	05.20.2005, 06:22 AM I am right there with you! I don't think you will get a 30 minute runtime with 4000mah packs without a battery change or so. If you use high enough voltage, you can get a pretty good runtime with 4000 mah, especially on a short track with low gearing. For a 30 minute main, you will also have the challenge of keeping the motor cool (think fan, heatsink etc.), especially in the summer. A large motor should be in the cards (larger than the "s" Feigao or basic xl). I am thinking "xl" or a nice 1940 Lehner.