Why My Clutch Is Smoking On My Go Kart

I have written quite a few commentaries on this topic in the previous, but I consider it warrants rehashing, simply because there are two attainable factors why your clutch is smoking. I ordinarily talk about a single most probably explanation, but in this short article let's speak about the two attainable causes of why your clutch is smoking on your go kart.

Very first the basic understanding of go karts is necessary. The drive line generally consists of a clutch driver and the driven axel sprocket. The driven axel sprocket is mounted straight to the rear driver axel which turns the drive wheels. This is a a single step program, or a a single ratio program.

The centrifugal clutch which is made use of on most go karts, utilizes weights that are mounted internally in the clutch that fling out and press against the clutch bell housing. The bell housing then in turn moves the sprocket driving sprocket teeth.

The standard clutch has 10 to 12 sprocket teeth. As a rule of thumb any clutch that has additional than 10 to 12 sprocket teeth is going to give problems to the drive line. Problems as in smoking clutch.

The engagement of the weights to clutch bell housing happens at a specific rpm. Normally this rpm is about 1800 to 2000 rpm. The engine demands to blast via this level of rpm and get the clutch pack to stick and ultimately engage to the walls of the clutch bell. The smoking aspect happens when the clutch is engaging but is not totally grabbing. If the prolonged engagement happens for as well lengthy, the clutch will commence to smoke and sooner or later harm it to exactly where the weights will only slip and possibly even crack and break apart.

As I stated at the commence of the short article, the prolonged engagement happens simply because of two attainable factors:

1.) The engine is not strong sufficient to get previous the engagement stage

two.) The clutch weight rpm is not higher sufficient.

The engine not becoming strong sufficient generally is the outcome of a mismatch in ratios to the rear drive wheels. So the true explanation is that the ratio is not steep sufficient, and for that reason the engine smokes the clutch.

(A different attainable concern can happen and that is if the clutch is produced to engage at reduced rpm than the engine can grab at, the engine might not have sufficient energy, and the engine will abruptly (additional like violently) shudder and quit. It is not uncommon for the engine to be so overpowered that it rotates backwards momentarily.)

The second way the clutch will smoke is if the clutch rpm by no means reaches engagement speed, or it is in the neighborhood of engagement speed, but is not higher sufficient above the engagement speed to get a lock. This will smoke the clutch and is prevalent in mismatched jackshaft systems.


The remedy for the very first clutch smoking challenge, is to alter the drive line so that the general ratio is steeper. The very simple strategy is to raise the rear sprocket diameter. Applications have been written that will estimate if you clutch will smoke or not, they generally are identified on internet pages or are obtainable for acquire via many internet pages. Normally what happens is that the hp-ratio just will not be attainable working with the very simple a single ratio program. So a jack shaft demands to be added to make the ratio even steeper. In other words, creating it a two ratio program.

This is exactly where guys who set up jackshafts require to be conscious. The clutch generally can not be place on the driver of the jackshaft, with a ratio in front of it. This will make the clutch rotate as well gradually, even even though the general ratio is appropriate. So the clutch engagement rpm demands to be taken into account otherwise the clutch will smoke on the secondary jackshaft mounting position.

The bottom line is if clutch is not engaging simply because of either as well small hp, or as well slow of a clutch speed then the program require to be changed by altering the ratios either behind the clutch or in front of the clutch