Originally Posted by dorafo (Post 5213242)

OK running a 16t crawlmaster with 56/10 32p on 2s and still seams to be getting hot. Should I go with the 9T pinion or up the spur? Its in a spawn so not sure what spurs will fit it. Any info is appreciated.

Originally Posted by 87yota (Post 5209123)

I mustve missed it on the forums on in here...im kinda new w the vanguard motor...im got one in on trade and don't know much about it other than its fast...doesn't like to crawl really.. kinda cogs out...im have 20t pinion and Robinson racing hd slipper clutch for the wraith installed as well looks like it's an 85 t spur...im I bought say a 24 pinion ,do you think it would work with the crawling or am gonna burn up my new vanguard motor? if I have to I'll buy another motor...wouldn't want to risk it...I also have the waterproof esc that goes w the vanguard motor as well...thanks for your anticipated reply!

Originally Posted by mike31 (Post 5187278)

I see the note that you do not recommend the HH crawlmaster 13t with 52/12 gears and recommend the 52/10 setup to prevent problems. Is this still currently a problem Or something that's been worked over the past 4 years? What are the details of the problems that occur then if you know. I just installed this motor, bec, and hitec 7950 and wanted to make sure not to smoke something right off the back.

Originally Posted by Harley (Post 3637594)

GEARING!

Ok, I've answered the "what gearing for my xxxxx setup" question about 346 times too many. It's time to try and cover it as best I can here. *However the issue is that it goes hand in hand with motor choice, so this could get windy. These are all just starting points and there are hundreds or thousands of combinations. This is just a quick reference to get new people started in the right direction.

First off, when I refer to numbers in the format similar to "80/20", this means 80 tooth spur/20 tooth pinion. So, 84/14 would mean 84t spur/14t pinion, clear?



Are you running a stock motor? Short story, 84/16

If so then your gearing choices are limited but should be handled immediately if you are running the RTR. The stock gearing 80/20 (4:1 ratio) is too high of a ratio for the stock motor. The stock motor will not last you long anyway but if you want to extend it's life you need to regear, NOW. You are going to lose speed, there is just no way around it, I would suggest an 84/16 (5.25:1 ratio) setup.



Are you running a little higher speed brushed or brushless (Examples: 13t CrawlMaster, 27t TorqueMaster, 13.5 Redline)? Short Story, 56/12 32p (brushed) 56/14 32p (brushless) (note from Holmes- 56/12 has caused problems with brushed motors, we recommend 56/10 or 84/16)

Did you read the post #2? If you are running something I suggested (or similar to that) then the stock gear ratio is probably fine for you. The problem is that the little 48 pitch gears can't hold the power, you need to upgrade to 32 pitch gears. The stock ratio of 4:1 is fine, so you just need to equivalent in 32p. 56/14 is the same ratio. You can still run the stock spur cover with this setup as well. If you want a little more strength and tooth contact area you can go to 60/15 but the stock spur cover is likely a no go. Also with the 60/15 setup some motors require you to do a little filing on the motor plate to slide the motor over further. If you are running/wanting a Tekin Pro4 (or similar high power brushless) then see the last section.



Are you running something for mostly trails and crawling (example, 35t Torqemaster)? Short Story, 84/18

If you changed out your motor to something with a little more low end control and power then you likely could benefit from a better gear ratio. This isn't a must for a setup in this range however. The stock ratio is OK, but just not ideal in my opinion for someone who is looking to spend most of their time going slow. I do still feel that even if you're a rock crawler only that you will benefit from some wheel speed. I would suggest that if you do change gearing you start with an 84/18 setup.



Are you running a Tekin Pro4 (or similar high power brushless)? Short story. just read the rest of it!

If so then you likely need to build everything as strong as possible. I have gone this route personally. My suggestion is the 56t Gen3 metal spur and slipper setup from Robinson racing. To run this setup you will also need to buy a Traxxas slipper rebuild kit, all you will use from this kit is a black spring and a lock nut though. The next thing you need to buy is the Beefy top shaft from v84x4 here on RCC. I will include a link shortly. With the Pro4 you also must buy a pinion that has a 5mm bore and is hardened steel so that it wears more slowly against the steel spur gear, a 14t pinion is my suggestion. The Pro4 is very high power and you will likely spend the rest of your money replacing things in the truck since it was never meant to have something like this bolted into it!


That is my best first shot at handling this question. I'll come back and edit as required.

Originally Posted by GMCSierra2500HD (Post 5256239)

My Spawn is 32p and I can't seem to find Spurs with 84t. Should I just change to 48p? Sorry if this is a dumb question, but I don't know much about gearing. My stock ESC and motor were running hot today in 100* weather and going into thermal shut down.

Originally Posted by kingy (Post 5263939)

Anyone have a recommendation for gearing with a roc412 2300kv and mmp? Running 3s for now, but may look at 4s in the future.

Drivetrain is already beefed up, no dramas there. Currently running a trackstar 10.5t (3250kv) with xcar 120a on 3s geared 12/60 and pitbull rockbeast xor's. Temps are around 40c

Reason to go 4s is with then same gearing 4s is pretty similar rpm, so should get similar speed, but if it can handle being geared higher then 3s will do.

I known the 3100 is a far better choice, but I got the combo for next to nothing