I am building a go kart with a 10hp Honda engine. A relative of mine used to build karts and said he used a 12hp and a 6 speed lawnmower transmission and it went 80mph. I have no clue how he did this. So how do I use a lawnmower transmission and I would love any other cheap transmission ideas you have? Thanks.
Transmission????
- Thread starter bmbillups
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karl
Well-known member
Is you engine horizontal shaft or vertical? He used a vertical shaft and put a big pully on the motor and a small the the tranny. I dont think he did 80, the tranny would have blown out. The best solution for you would be a torque converter.
r_chez_08
Should be in the shop...
Nice size motor! G400 or gx340? If horizontal karl is right, a torque converter would be the easiest solution for you. You could probably use a gtc tav2 with a 1" shaft and get up to 50 on the flat. However, if you wanted to do anything other than completely flat, gearing for 50 would be a push.
If you like gears, get a bike engine. Best, easiest and cheapest option usually for gears.
Rob
If you like gears, get a bike engine. Best, easiest and cheapest option usually for gears.
Rob
migel101
New member
maybe he put the tranny in reversed and started it rolling down a hill?
lol
lol
Also I have another question. I was thinking about just making the kart a 1 speed with a centrifugal clutch and sprocket. How fast should a kart with a 10 to 12 tooth clutch and 50 to 60 tooth sprocket go w/ that 10th Honda on it? Cuz if it's 30 to 40mph I won't bother w/ torq converters or transmissions or anything.
B man
Tecumseh FTW!
what size tires?
B man
Tecumseh FTW!
running what rpm?
B man
Tecumseh FTW!
bout 25-30mph. depends on wheight and what your rpm is later if that speed changes.
B man
Tecumseh FTW!
a torque converter is a CVT. your best choice.
anderkart
Moderator
I've got a 10hp/G400 Honda engine on one of my karts.
I removed the engines governor, re-jetted the carb and made a straight-pipe/header.
And then I used a Noram Star clutch:--> http://www.out2win.com/catalog/noram.html#star with 18 teeth... and a 65 tooth axle sprocket... and 11" tall rear tires, to end up with a top speed of around 45mph @ 5000rpm.
With all the awesome torque the 406cc./ G400 flathead Honda engine develops, my kart still accelerated pretty dam good even though I weigh 235lbs.
You'll find more pics/info/videos in my thread here:--> http://www.diygokarts.com/vb/showthread.php?t=3664
jrmints1415
New member
when removing the governor it requires you to remove the crank case cover and you will find a small plastic (usually nylon) gear. Remove the gear, and also the arm attached to it. You then can hook the throttle directly to the carb. This might make your self think it is hard but it is very easy and many videos on youtube will help you. Rejetting the carb is a little more complex, but if you understand the concept, and do it slow it is easy and well worth your time. What it does is you drill a bigger hole in your carb jet to make more gas flow through the carb. A straight pipe is what people use on there karts as exhaust. It improves performance, and looks a lot cooler than stock exhaust! Also getting billet fly wheel, cam shaft, connecting rod, etc. will highly improve your engine performance. You can tighten your valve springs to 16 pound valve springs, and you could also buy a better carb. I know this seems like a lot of info but there are plenty of videos and websites that go into these in step by step detail. Search these upgrades on google or youtube, and you will be very happy if you decide to do them. P.S. a torque converter runs for around $200 but its worth every cent!
TimG
New member
This article will help you understand more about the governor removal.
http://www.affordablegokarts.com/govenor-removal.php
Check out some of there other articles, it helped me a lot
http://www.affordablegokarts.com/govenor-removal.php
Check out some of there other articles, it helped me a lot
B.M.800
TheBeal.
What about something like this?
South Kart3377
Kart designer
Cool tranny is that this one http://www.diygokarts.com/bike-plans/offroad-bike-transmission.html
its cool.
its cool.
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