bigair49
Member
This is a friend of mines kart that I will be installing a 5 speed engine into. This project will be moving pretty slowly for now but ill update as we go!
shifter kart
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daviddavid
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5 speed you say? Care to share?
bigair49
Member
I plan on using a dirtbike engine. I have a xr 80 four stroke and a cr 80 two stroke we havent decided yet
That One Guy
Occational Annoyance
CR.
That One Guy
Occational Annoyance
I concur. Powerbands are jizztastic.
Kenny_McCormic
Kartless....
I wish I could build things in the kitchen!
bigair49
Member
The Cr is my choice as well but I am having a hard time convinceing the owner.
I wish I could build in the kitchen too those pics are from the previous owner LOL
does anyone know where I can find a 50/52 tooth 420 sprocket that will bolt to the hub?
I wish I could build in the kitchen too those pics are from the previous owner LOL
does anyone know where I can find a 50/52 tooth 420 sprocket that will bolt to the hub?
Doc Sprocket
*********
Umm... EVERY engine has a powerband...
dpaxson
New member
you're not going to want a 52 tooth sprocket for a dirt bike engine. you would top out at like 25 miles an hour. you could use a #40 sprocket and just run #40 chain on the original drive sprocket. there would be little side to side play but the link spacing and roller diameter is the same
dpaxson
New member
have you ever ridden a xr 80 and compared it to a 2 stroke dirt bike engine?! obviously every engine technically has a powerband but he's talking about that hit you get from a high performance 2 stroke
bigair49
Member
dpaxson, I think the original sprocket/chain is #30 it's really small. I do know that the CR or the XR both run 420 chains and I already have boxes of old sprockets front and rear.what about 16 tooth front and 49 rear I think that is the tallest combo that I have.
I suppose I will have to make a new hub.. I was hoping to find something to just bolt onto the original hub no biggy!!
I suppose I will have to make a new hub.. I was hoping to find something to just bolt onto the original hub no biggy!!
bigair49
Member
Cool I didn't know that..It's funny here at work we use #50 and #40 chain on our conveyers and we have miles of chain and master links,sprockets, half links ect..the funny part is that I never compared the two.. I was told that the pitch was different and never bothered to confirm it..oh the possibilities are endless.......
Thanks guys!
Thanks guys!
Yea i know every engine has a powerband, the OP was trying to decide between a 2-stroke and 4-stroke, I was recommending the 2 stroke because they have a much more sharp powerband than a 4 stroke which in turn makes the kart funner to drive.
dpaxson
New member
428 and 40 aren't the same. the roller diameter is different
bigair49
Member
So.. I found a 33 tooth #40 sprocket here at the shop would that be too tall paired with say 16 tooth front?? I have 13tooth to 17tooth fronts I think I can get any size rear at Princess Auto @ #40 what would you guys recommend considering it will have 5 gears with the XR. Any thoughts on shifter/clutch set ups?
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