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Old 11-10-2008, 10:46 AM   #1
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Default lipo and 17.5

will 3800 25C be competetive to run on stock touring?
2400 20 C?
5000 30 C, overkill?
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Old 11-10-2008, 12:53 PM   #2
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Yes, a 3800 should be good for stock. I run a 5000 28C and do not see it all as overkill. It just means more run time.
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Old 11-10-2008, 04:36 PM   #3
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you can use a 5000mah 20c lipo for practice. and a 3800 mah 25c for racing. being that most qualifiers and mains are 5 minutes.
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Old 11-10-2008, 06:04 PM   #4
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I used the IP3800s in modified touring for a few weeks and they had enough power and punch to drive a Speed Passion 3.5. Geared around 12.6:1 on a 80m long very technical carpet track I was using about 2700-2800mAh. On a large outdoor track thats about 250m long, I hit the voltage cutoff about 1/3 way round the victory lap but they did last the 5min run. That was geared around 10.5:1 with the same motor. I had to gear 1 tooth on the pinion smaller than the best ratio for that track due to heat and lipo swelling issues (just heat expansion in the pack, but figured it was safer to drop a tooth on the pinion to stop it).

For stock or even super stock, the 3800 25C pack will be more than adequate. With a 19T brushed a guy I raced with pulled about 3500mAh on the same large outdoor open track (asphalt) and about 2400mAh on the short technical carpet track. With a stock 27T you should be able to run at least 2 races without charging on the 3800s.

I now run LRP 5300 28C Competition Car Line packs and there is no real difference to the punch they provide, but the packs run a hell of a lot cooler in the car when I gear the 3.5T hard on the large outdoor track I referred to.

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Old 11-10-2008, 07:40 PM   #5
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who sells the IP'S?

So a much lower MAh than a 3800 hundred (eg.3400,3000,2400) would be suitable for a 17.5.

Last edited by GCT69; 11-10-2008 at 07:54 PM.
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