wheely king gear reduction box

[iceman320]

just wanted to know if any of you guys are using the hpi gear reduction box on your wheely kings. and what tooth of pinion you guys are using on the reduction box. thanks in advance.

[wanantrdsc]

The reduction box comes with a 15t pinion. The stock motor comes with a 21t pinion. Pull the 21t off of the motor, and replace it with the 15t. Assemble the motor/box setup, and put the 21t in the box output shaft. You dont need a different size pinion. The gearing on the box is such a beast, its really all you need.

[Kitty]

i agree,the gear box comes with all u need to work,now i am thinking of replacing the spur gear with the 87 tooth spur,to have a litle more speed,what do u say???

[wanantrdsc]

I had to check out Cluj-Napoca. I had no idea where it was. Gives new meaning to talking to someone halfway around the world. Capital of Transylvania - pretty cool!

Anyway, I dont know on changing the spur. It would be a lot easier to change the pinion. I put a 23t pinion on, and it did not to seem to increase the speed, just made it more jerky, and noisy. Also tried a 20t motor, with the same results. Given how slow it is, not sure I would notice even a slight change, never tried crawling with it because the control was poor. On the other hand, changing the spur is different than changing the pinion. I can never remember how it works, but I believe changing a couple of teeth on one is not equal to changing a couple of teeth on the other. With that said, its only a spur, so thats not a major investment, nor a major overhaul work wise. Go for it. Might want to search the WK section for 90t or spur. I have never looked myself, so I am not sure whats here on that topic.

Noroc!

[HAAS599]

The gearbox is going to give your truck crazy amounts of torque and slow it down a lot.. I dont have a gearbox on my truck anymore, but when i did i went with a 23 because it was the largest one I had. Make sure you got metal tranny gears.

[Kitty]

it doesn't botter me that is slow an noisy,i just want to make it a good crawler,now waiting for some parts to arrive and it will be finished,i will just take care of the look