TAV 30-75 Torq-A-Verter, Comet After Market

Installed on colman ck100 gokart predator 212, reworked frame and raised engine 5 inches. 8yr old son pulls wheelies. Great upgrade.

This type of system is a game changer for small engine toys (minibikes, go karts). It’s much smoother, quieter, and faster than a stock centrifugal clutch + jack shaft setup.

This system is well done. Everything fits nicely.

One small tip, the driven pulley (back one) is set to spring preload #2 (center hole). Indexing the cool spring one hole clockwise (looking at outer cam plate) moves you to preload #1. That allows the system to advance to overdrive (higher speed) much sooner. Try that for flat ground applications. Go the other way, counter clockwise to hole #3 for maximum torque (steep hills).

When taking the system apart to reindex the spring, don’t trust all of the YouTube videos on the process. Many tell you to twist the cam plate 180 degrees after initial dry fit, before fastening everything down. That’s too much rotation and will not work. The actual rotation is more like 120 degrees.

Really made the predator 212 come alive!! It pulls the front tires off the ground on pavement at a dead stop!!

What I needed to get my Yerf Dog back on the trails!

Works very well. Easy to install and brings a smooth and power torque transmission to the kart wheels.

Works great better then the clutch.

Great product and arrived really fast

After burning out a $50 centrifugal clutch quite quickly on my motorized bike, I ordered this torque converter with hopes that it would last longer… and, it has! There have been a few problems, but I have been able to get them worked out. Here are the pros and cons.

Disclaimer; When I recommend a product, I recommend it by personal experience. I am not sponsored by anyone to advertise.

Cons:

1. As of the beginning of 2019, there is a machining flaw.

Long story short, GPS had a problem with their machining on the rear driven pulley. This created about 1/8 inch of slop, allowing the pulley to wiggle back and forth. My Dad and I came up with our own solution to the problem by removing the washer that goes beneath the 15/16 inch nut and placing it just behind the surclip on the back side of the torque converter to eliminate the slop in the shaft. When I called GPS, the service tech told me to do similarly. It has worked for about 140 miles without issues.

2. If you want to use the predator 212 like I did, (By the way, a pretty awesome engine for $120) you will have to cut the corner off of the left oil cap positioned nearest to the muffler.
Not a big deal, just be aware it is a necessary step. I don’t have experience with any other engine. If you have a different brand, this part will most likely install differently on that particular engine.

3. The belt that came with the kit seemed to be of low quality.

After the first day of riding, I removed the included cover to make sure everything was working properly. I noticed a heavy accumulation of black powder; ground belt granules. I assumed this was a result of normal break in and kept riding. A few days later, I noticed it did not have as much power as when it was new. Once again, I ignored it and began climbing a steep hill. That was when the belt was reduced to spaghetti. I called GPS and told them my problem. They asked my what my gears were: 10t drive sprocket, 36t driven sprocket, and 26 inch bike wheels. He told me that for off road riding I would need at minimum a 50t driven sprocket. I ended up using a 48t I had on hand. I also bought three (3) of their drive belts in case I needed a replacement. The service tech at GPS told me that the belt that came with the kit may have been on lower quality than the Kevlar belts they sell. I happy to say that 80 miles and multiple hours of hard riding later I am still on the first of these three belts—and it is showing little wear.

Pros:

1. Easy to install.

Using Redbeards video, I was able to install this kit in under 10 minutes. Anyone could install this.

2. Super tough cover.

The first time I saw the flexible plastic cover included, I was skeptical at is strength. After 3+ falls, I am no longer skeptical. This cover is super tough, and looks great, too.

3. Reveals what your engine was hiding.

With the centrifugal clutch I had to gun the throttle as high as it would go to climb any reasonable hill—then peddle some to make it to the top. Wheelying was out of the question. My top speed was about 40 MPH. Now I can any climb any hill I choose without a problem, wheelie easily, and ride at speeds of 50 MPH. Amazing difference!

4. Awesome customer service.

When I called in with problems, my calls were answered on the 2nd ring. The guys were very nice to talk to, and helped me navigate my problems. Couldn't have been better.

5. Installs in roughly the same spot as the centrifugal clutch.

I did not have to change my sprocket alignment at all. Lined right up in essentially the same position.

Bottom line: If you are tired of burning through centrifugal clutches and want something overflowing with torque and power, this is the product for you. Buy it along with an extra belt. You won’t be disappointed.

This is an update to a previous review.. I was admittedly wrong and did some more research. This is a Chinese aftermarket but the highest quality they manufacture there. I have put this to quite some abuse and the belt hasn't worn down a bit. I would highly recommend this to anyone.