Bwdeaton
New member
You could just try changing the gear ratio outside of the engine to include the 2:1 reduction as a factor an make the total reduction around 5:1 or 6:1. How many teeth are the current sprockets?
needing a lot of help/advice on this one
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chancer
ɔ ɥ ɐ u ɔ ǝ ɹ
Not really cause then you have to buy gears and or a jack shaft.
If you can just unbolt that gear reduction box. and still close up your engine a #40 clutch may work with the chain you have. "may".
If so they can be found on ebay for 20 bucks. IMI auctions 303-833-0491
You local tractor supply company may have one on the shelf.
If you can just unbolt that gear reduction box. and still close up your engine a #40 clutch may work with the chain you have. "may".
If so they can be found on ebay for 20 bucks. IMI auctions 303-833-0491
You local tractor supply company may have one on the shelf.
Bwdeaton
New member
428 chain is the same pitch as 40 but 428 is wider and has more tensile strength. I think that 428 chain can fit on #40 sprockets.
if a #40 gear is the same as a 420 gear, I don't think it will work. I have a 420 centrifugal clutch and the spacing on the teeth didn't match up
Bwdeaton
New member
If you can get a front sprocket with more teeth, you can increase the speed. This will decrease the torque, and you will need to find good middle ground for the ideal ratio.
i would need to find a gear with a 1inch bore and keyway that could give me about a 25:1 ratio..
chancer
ɔ ɥ ɐ u ɔ ǝ ɹ
You need a 5 or 6:1 ratio.
If I were you and you said you have a 420 clutch
I would eliminate the gear reduction. run that clutch and buy a 420 Axle gear and chain at a 5:1 ratio.
If I were you and you said you have a 420 clutch
I would eliminate the gear reduction. run that clutch and buy a 420 Axle gear and chain at a 5:1 ratio.
chancer
ɔ ɥ ɐ u ɔ ǝ ɹ
It is not the same. but similar.
40 and 41 are the ones I believe are interchangeable.
Look at the chart. the roller width is different. So a 420 chain will not not fit on a 40 gear. But a 40 chain will fit a 420 gear.
40 and 41 are the ones I believe are interchangeable.
Look at the chart. the roller width is different. So a 420 chain will not not fit on a 40 gear. But a 40 chain will fit a 420 gear.
Attachments
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428 chain.JPG
i'm just not sure if my clutch is a #40 or a #420 all i know is that it didn't work with my current 428 chain. i don't think it has any sort of markings but i can look again
chancer
ɔ ɥ ɐ u ɔ ǝ ɹ
Cause the roller diameter is larger on the 428 so it wont fit down fully into the gear on a #40 tooth
okay so should i try and adjust my ratio factoring in the reduction or should i try and figure out a new chain setup with the clutch i currently have? the one i have is cheap so unless i'm sure or fitment, there's no use in using it as my platform
chancer
ɔ ɥ ɐ u ɔ ǝ ɹ
umm
okay! so i got the info i needed! so the centrifugal clutch i have right now is a #41 and the sprocket on my axle is #428
could i buy a #41 chain and it would work with my 41 clutch AND my 428 sprocket??
or alternatively, could i order a #40 clutch and chain then have it work with my 428 sprocket?
Kartorbust
Inmate #627
I think you'll be better off swapping the sprocket to #40 and run that. It'll take the guess work out of it. I don't know if #428 will run on a #40 sprocket or if a #40 will work on a #428, but I'd rather just swap the one off for a #40 and call it good.
A designer knows he has achieved perfection, not when there is nothing left to add, but when there is nothing left to take away.
A designer knows he has achieved perfection, not when there is nothing left to add, but when there is nothing left to take away.
yeah i went ahead and ordered a #40 clutch and chain this morning. hoping they work well with my #428 sprocket but hey if they don't, that's just a sprocket i have to buy. my current sprocket is only 44 teeth though so i'm thinking i will need to size up a little seeing as the clutch has 10 teeth. if i can run it as is I will but it may burn through clutches
firemanjim
Just kartin' around....
That's a wet clutch set up.... KEEP IT....
if it's reducing speed or torque too much i want it offbut i don't know if it's helping anything?
Pull out the governor in its entirety. Throw on some go fast goodies, and have some fun.
The wet clutch might have a reduction built in, but I don't think so. You see those on the higher power kart engines at the local kart rental places. Last longer than a cent clutch..... And take a Lil more abuse....
---------- Post added at 07:22 PM ---------- Previous post was at 07:19 PM ----------
If you don't want it, I might be interested in buying it.....
it does have a 2:1 reduction.. but i could see the wet clutch lasting a lot longer.
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