Shifter kart sprocket

[Kaptain Krunch]

Turns out i got outbid, and im still looking for a sprocket. Does anyone know where i can find a #428 sprocket for a 1 inch axle, looking for 20-25 teeth and under $30.

 

[Kaptain Krunch]

Also, the only sprockets i can find for a 428 chain are 40mm or 50mm and if my math is right 50mm would be about 2 inches and 40mm would be around an inch and 3 quarters or so. Is there anyway i can just buy the 40mm one and make some spacers out of pipe to get it down to the right size?

Here are the types of sprockets i found:
http://www.cometkartsales.com/store/chassis/crg/crgshifter.htm

 

[Kaptain Krunch]

I sorta found something that mite work. Its a sprocket set from surpluscenter, the only problem is that it only comes in 40,50,60, and 80 pitch and i have a 428 chain, would any of those be close enough to fit the 428 that i could just do some minor filing and grinding to make the chain fit?

 

[Kaptain Krunch]

I'm still looking for some help on this, I ultimatly need something around 25 teeth, but i cant find anything for a 1 inch live axle, just 30mm,40mm, and 50mm Does anyone have a link to a site that has one for 1 inch axle?

 

[ridemtb2004]

sprockets

check out gokartgalaxy.com or northerntools.com I saw a hub for a 1" live axle that you could mount a split sprocket to. I don't know what the pitch is but I hope it helps you

 

[Kaptain Krunch]

Go kart galexy has them but its a bit pricy, 40 dollars is quite a bit but i mite haveto bite the bullet and buy it.

Also they are made out of "high strength aluminum" and that doesnt reassure me since this is a on/off road kart so if anyone knows how strong these are that would be great.

 

[briggsman]

Try surpluscenter.com they have all kinds of sprockets, and at good prices too!

 

[Kaptain Krunch]

Try surpluscenter.com they have all kinds of sprockets, and at good prices too!

yea i did, they have 25-80 pitch but i need 428 and they dont have that.

 

[r_chez_08]

http://www.rebelgears.com/sprockets/chainsizes.html

http://www.schuurmanbv.com/?pag=pro...=KSPR&subgroup=Sprockets_QuickFast/SplitToFit

 

[ColokartDad]

an easy way to get what your after is to get a old large gear with the axel diameter and grind/cut off the teeth then bolt your desired sprocket to it ,or not finding that lots of farm machinery stores have a weldable gear and hub , they wont have 428, so all you would need is the hub, and a plain ol piece of steel cut in a circle and the inner hub diameter inner circle , and bolt it to the sprocket with whatever bolt pattern you find. spot weld things to be sure its all centered, then its all good.

 

[robin]

i baught a 428 26t teeth split sprocket from ebay look at my most recent thred for pics it was 18 £

 

[Kaptain Krunch]

Yea i ended up buying one for 15, them welding up a spacer from 1" to 40mm. The engine didnt have enough power so i sold it and made a $25 profit.

 

[Cyfun]

Sorry to dig up an old thread, but I'm having similar problems finding a way to get a 24t or 26t 428 sprocket on my 1" axle. I did just find a few places that sell split shifter-kart sprockets for 30mm axles, and 30mm is about 1 3/16" inches: http://www.righettiridolfi.com/lnguk/44_245/Sprocket/Sprocket_30mm_pitch_428_Steel

Did you ever have any luck in getting a sprocket to work for you?

 

[r97]

i would get some 30mm outside dia tube 3/32" wall(does that size tube even exist?? if not you could get something similar and drill it out) cut out two slots(one on either side) one slot the size for the sprocket key way, the other the size for the axle key way, then fiddle with the keys to make them fit, it would be easier to do this with a 40mm hub but it can be done.

 

[Cyfun]

I figured I could take up the gap with a bit of thin pipe (pvc or copper) or even just some old bicycle innertube rubber.

However, I was just looking at my project again and I might need to work in a jackshaft. If I do that, then I'd have more flexibility in finding a sprocket for an axle.

 

[redsox985]

428 chain is nearly identical to 40. The sprockets are fully compatible. I originally purchased a Honda xr100 motor that ran 428 chain so, after struggling to find a 428 sprocket, I researched the measurements of 40 chain and they are only different by .02" in one dimension. http://www.gizmology.net/sprockets.htm The roller diameter is .335 on 428 chain and .3125 (5/16) on 40 chain. Only a difference of .0225".

 

[Cyfun]

Sweet, good to know. That should make searching easier. Thanks!

 

[r97]

in that cae, how does 10 bucks sound?
24t
26t
choose your sprocket size

 

[Cam]

My suzukis run 428 chain

Cheers, Cam.

 

[Cyfun]

Thanks, r97. Those are sweet deals. Wish they had split sprockets, though.