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Old 10-15-2013, 02:43 PM   #1
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Hi guys, I have a BMI DB10R 1/10 pan car I bought off ebay in great condition. I believe it has come with a 98t spur gear and the manual says I need a 64 pitch pinion gear. Just wanted to know which one as I'm usually a nitro on road guy.

My local track is also an outdoor track, with a considerable back straight. I will be running a 2s lipo and either a 4 or 5.5 turn brushless motor. I just want a rough estimate to get me going until I become more familiar with this series.

thanks for the help.
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Old 10-15-2013, 09:38 PM   #2
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It's not really that simple, pan car guys calculate their gearing by "rollout". Tire diameter plays a big role aswell as your rollout can change quite a bit as the tires wear, which I'm guessing will happen really fast with that kind of power in a 2wd pancar

I'm sure someone else can explain it better then i
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Old 10-15-2013, 10:35 PM   #3
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Try around 25-30mm roll out should be ok for 4.5-5.5T 2S. And the speed will be really fast already.
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Old 10-15-2013, 10:42 PM   #4
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Running outdoors I would recommend you getting 48Pitch gears, such as kimbrough, the 64 pitch will not last. try say 76T, 77T spur and a 13T, 15T pinion in 48 Pitch for starters...

I run the same setup in my Lajf Racing widened X10, and we run 4T motor 2cell Lipo with a 55meter straight.
Xray T4-14 (BLS551,4.5T/8.5T, Spectrum), Xray X10-15 (Lajf Racing widened 235 4T, IRS)
Lajf Racing P28(LiPo, spectrum), Lajf Racing P28GT (LiPo, spectrum )
Xray X1(21,5T, spectrum) Tamiya M05(tamiya ESC, silver can, spectrum)

Go 235mm with X10 widening parts from www.lajf.se Get your P28 at www.lajf.se/pshop
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Old 10-16-2013, 07:08 AM   #5
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There is a 1/10 ONROAD pan car thread in the OVAL, LARGER SCALES, AND MORE section here on RCTECH. Here is a link to that thread (1/10th pan car)

There is a lot of good information on running brushless pan cars on outdoor tracks in the thread. Many racers use 48 pitch gears for durability.

The BMI DB10R is a 200mm wide chassis. I assume there is a class at your outdoor track for it. Usually a lot of outdoor pan car classes use 235mm chassis, so make sure what others are running.

One last thing, do your homework on what type of bodies are allowed at your track. Electric on-road pan cars are much lighter than nitro cars. As such they are more prone to blow-overs (from too much rear downforce at high speeds).
I'm currently racing VTA. Check here for rules/info: http://www.usvintagetransam.com/
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Old 10-17-2013, 03:09 AM   #6
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thanks for the great info, i'll check out that thread too
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