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Final Drive Ratio

mulepic

Quarry Creeper
Joined
Jun 18, 2008
Messages
208
Location
phx
I like to go slow and one of the concerns I have about purchasing a berg is the ability to do that. For example I geared my axial to a 62 final drive ratio, 12/97. Can someone tell me what the final drive ratio of the berg is with either the 12 or 13 tooth pinion? I did a search in here but only found threads about people trying to source (or have cut) 8 tooth pinions. So I suspect others would like to see it go slower as well. BTW, I'll be running the same novak goat(s) I have now.
 
I like to go slow and one of the concerns I have about purchasing a berg is the ability to do that. For example I geared my axial to a 62 final drive ratio, 12/97. Can someone tell me what the final drive ratio of the berg is with either the 12 or 13 tooth pinion? I did a search in here but only found threads about people trying to source (or have cut) 8 tooth pinions. So I suspect others would like to see it go slower as well. BTW, I'll be running the same novak goat(s) I have now.

Since you are in Phoenix go drive cars69's goat powered berg. Then you will know if you like it. If its not slow enough for you order smaller pinions from Holmes Hobbies.
 
With most of todays Crawler ESC's, you can either set the throttle control there, in your radio, or in you finger. I actually have a couple of 27t CO27 race motors in mine right now. My local shop doesn't have another 45t in so it was what I had.

I m running two cell with this and I would put it up against the speed of 45t with three cell, just not the torque. We'll see what I do soon, I might go with a 3 cell with 45t's in it.
 
I run 40:1 with cheapy 35t integy lathe motors and a 4 cell lipo, it will crawl slower than it needs to with no throttle curves or radio adjustments, and fly on command. You don't need to gear as low with the berg, one big reason is it has twice the power of an ax-10 of the same gearing. Its like going slow in a Toyota vs a big block buggy. You have to gear the Toyota 100:1 to creep along, when you can do the same with a huge v-8 and higher gearing cause it has the power and torque at lower rpm compared to the weaker engine.
 
I run 40:1 with cheapy 35t integy lathe motors and a 4 cell lipo, it will crawl slower than it needs to with no throttle curves or radio adjustments, and fly on command. You don't need to gear as low with the berg, one big reason is it has twice the power of an ax-10 of the same gearing. Its like going slow in a Toyota vs a big block buggy. You have to gear the Toyota 100:1 to creep along, when you can do the same with a huge v-8 and higher gearing cause it has the power and torque at lower rpm compared to the weaker engine.
well put
 
I have 12 tooth pinions in my Goat Berg and it will crawl slower than any
2.2 Rig I have ever run. There is a short vid on my post creeping on the
floor and up and down the walls to show how slow mine will creep. Also
if you want to see the punch it has check out the Goat Berger wheel
speed video. Or if you want to drive my berg just let me know."thumbsup"
 
im running integy 45t lathes on 3 cells with 12 tooth pinions. here lately ive been considering 35t motors or taller pinions, my rig is definetly slow enough, but its just short of being able to do wheelies lol.
 
Kamikaze put it well. I was never happy with the torque of the integy cheapie motors in my shafty and I had to throw a bunch of money at good motors to be happy with it. Dual motors changes everything, I'm running 55t integys on 3 cell with stock 12t pinions, and I couldn't be happier. I'm even happy with the speed, surprisingly enough.
 
Thanks for the info everyone. Cars69, thanks for the offer, maybe one day we can meet up at Papago. Right now I'm sort of home bound (happily so; we have babies), this hobby works well for me b/c I have enough rocks in the back yard to keep me happy. I have been watching your thread and I watched your videos again. It does look like it has slow enough wheel speed and it sounds like there is sufficient low end torque to be able to use the slow wheel speed in tough situations on the rocks.
 
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