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09.12.2005, 02:32 PM
The 7xl with 9920 is a very versatile motor. It will take form 12-18cells. If you truck is lighter you can gear it up get more speed out it. Truck is a little heavier put a little bigger ratio less speed. I ran the 7xl on a emaxx at 14 lb. Had no problems. Even had it geared a little high. It just went. Got a little warm though. It is a excellent motor. How many cells makes a difference to. More cells the more power. More volts = more rpm = more speed. Hope this helps.
Peace!
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