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Old 01-05-2008, 03:10 PM   #1
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Default Gearing a B4

What would you reccommend a starting gearing for a B4 with a brushless 8.5?
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Old 01-05-2008, 03:47 PM   #2
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and also what do u recommend for novak 13.5 with a 84 spur i using a gtb esc. thank u for your responds
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Old 01-16-2008, 05:18 PM   #3
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with the 8.5 i would start with a 18 and the 13.5 gear it at 23 to 25 thats what i gear mine at
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Old 01-16-2008, 06:14 PM   #4
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The AE team(with the LRP motors) have been trying new gearing combo's. Just ran this at the Winterchamps in Columbus.

B4 w/7.5 24/81

B44 w/ 7.5 25/78


I'm not sure about Novak stuff, but I hope that this helps.
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Old 01-16-2008, 09:13 PM   #5
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I had started out with a 25, and ended up dropping to a 23, and it seems to work really well. I was as fast as anything else on the track and the esc ran cool.
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Old 01-16-2008, 10:38 PM   #6
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Quote:
Originally Posted by edwin p vicenci View Post
and also what do u recommend for novak 13.5 with a 84 spur i using a gtb esc. thank u for your responds
When i ran i used a 25/81 gearing for the 13.5. On an about 95x55 layout.
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Old 01-16-2008, 10:43 PM   #7
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I run a 25/81 as well plenty of power. I started with 26/81 and did not have any overheating issues, but when I added a little weight it just did not have the same punch so I ended up at 25. Good torque and plenty of top speed, although on our track your never on the throttle for more then 2 seconds.
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Old 01-16-2008, 11:26 PM   #8
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A 23/81 is perfect.
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Old 01-26-2008, 11:34 PM   #9
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Novak GTB 6.5R / 5500 mAh LiPo / 22:84?

Runs so cool (maybe 99 F) and spins up so fast I am considering 24:84? Geared down today to 18:84 and was slow, but very drivable/predictable. -- I did not notice the increase torque at all w/ this ratio. I think because at 22:84 I still spin the tires punching it anywhere in the powerband.

What would you do?

I've seen many of the top drivers running 26:78 in their BJ4s and B44s w/ 7.5R motors. So it seems I have a lot of headroom to work with as heating is just a non-issue for me.

This car is just so incredible.


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