WK Tranny Fix
 

You guys are probably aware of the problematic clicking syndrome of the stock WK tranny.

Building a crawler for a guy and he wants to use as much of the WK as possible...

So I came up with a fix:

Disassemble the tranny and take apart the 22 tooth counter gear assembly.

Remove the "slipper" assembly and head for the garage.

Drill four 3/32" holes through both the gear and the slipper plate. Drill these holes from the gear side and center them in the gear.

Once you have drilled the four 3/32" holes, set the slipper plate aside and switch to a 1/8" bit.

Drill through the holes in the gear with the 1/8" bit.

Use four 3x6mm button head screws to re-assemble the gear and slipper plate. Since the holes in the gear should be 1/8", the 3mm screws will pass through the gear and thread into the 3/32" holes.

Re-assemble the tranny and use the compact lil' booger in your next build."thumbsup"

Smaller screws would work better, the screw heads on these 3mm screws deformed the shape of the gear just a hair and the tranny is notchy. A little trimming will fix that. ;)

See pics:

nice tip "thumbsup" I havent had the tranny apart yet, but mine just started "popping" yesterday for the first time. Will put this on my to do list.

Here's a better option.

Install the screws from the slipper plate side. This way you don't have to worry as much about the size of the screw heads.

That means 1/8" holes in the plate and 3/32" in the gear.

3x6mm button heads work perfect here, but like I said earlier, if you have smaller screws they'll fit better...like a 2-56. I just used what was on hand.

I should mention that when you bolt the slipper plate to the gear you no longer need the slipper spring in the tranny. "thumbsup"

That means no headaches on re-assembly. :mrgreen:

How long will those gears last without the slipper assembly there protecting things?

C'mon man! You know they'll last till they break!

BTW, where in Mid TN are ya? there are some rc crawlers starting to pop up in cookeville

Cool tip JIA"thumbsup" , i started hearing that clicking noise from the slipper almost since new, and when i built it into a tuber with 14" wb and all t's it was to much for the slipper, it would click at almost any small bind, so i'am of to dissasemble the tranny.8)

I'm just north of nashvegas, in the thriving metropolis of Ashland City.

Great mod JIA! It is a shame to put the little tranny to the side becuase of that little spring.

Nice tip ill be sure to pull mine apart today!

Thanks JIA"thumbsup" I have dealing with this annoying clicking since the WK's inception. I saw this thread and made the mod.. Works flawlessly. Now lets see what breaks without this safety feature..

For me it was the 15 tooth gear in the tranny (the smallest one). I stripped all the teeth off of it. Smooth just like taking a dremel to it. But I had just JB welded the slipper clutch. It was very hard to put the spring back in though. I Don't recommend using JB on this thing. Nice mod Jason!!!!"thumbsup"

i also had the pleasure of stripping all the teeth off the top shaft gear. lol a while back i did this same mod to the clicker gear.. that was about 2 and a half months ago and i have yet to have a problem with it...

Is it posible to shim the stock spring or use a servo saver spring to to raise the point of "slip" in it instead of locking it?

The stock one is pretty stout for it size. I don't think you will have much luck. I would just get rid of it, throttle control is your friend.

i tried to use a different spring when i first got the wheelie king and it just didnt work very well.. the stock one is already pretty darn stiff.. dude trust locking it is a million times better i have yet to have any tranny problems with this setup and couldnt be anymore satisfied with it...

Yes. Great mod Jason. WK tranny gears are pretty cheap too. :)

I simply removed the spring and replaced it with a shock spacer after I dremeled off the little "notch" part. Fit in there perfectly. I've been running it that way for about 4 months now with no problems....and no clicking!

Another thing I did before I got the CKRC gears was took the slipper apart and ran a bead of hot glue around and into the spring. Stopped the clicking, but would still give a (very) little in case of a bind.

Ditto!

nice! ill have to tell a buddy about this fix. he has had problems with his wk tranny doing this "thumbsup"