Noob with a jackshaft sprocket question

[fishheds]

Hey Guys.First post,but sure it won't be the last.My son and I drug this out of the weeds this weekend.

114D Manco with a 4hp Subaru Robin.No jackshaft sprockets or drive chain.We robbed a chain off an old Roketta 110 mini atv,but decided to go ahead and order a jackshaft rebuild kit and do it right.got a steering wheel too.
I assumed the jacksprockets would be the same size,but the kits come with different tooth counts.10 & 14.
So,my question is,which sprocket goes on which side.I'm thinking the 10 tooth goes with the 10 tooth clutch and the 14 with the 60 tooth axle sprocket.Is this correct?
I haven't studied the sprocket ratio charts yet,but was hoping someone would give me the laymans downlow.

I also don't think the rear axle/wheels are original and wonder how the size is going to work with that engine.
Thanks for any advice yall can throw my way,David

 

[DCProductions]

The clutch goes to the 14 which goes to the 10 which goes to the axle, or at least that is the normal setup. That will give you more torque but with a sacrifice of speed.

 

[fishheds]

Thanks DC.Is that a good ratio for the cart we're working on?
I'll be getting into this more while awaiting parts,but was wondering if that is a pretty good setup for the size wheels the cart has.I'm pretty sure the PO put that axle on the cart then lost interest,along with the sprockets.The tires still have the little rubber "nipples".
My 12 yr old son and 7 yr old daughter are going to be driving,and we are sand people,so I'd like to wind up with a good hole shot but maybe 25 mph top end.

 

[DCProductions]

What size are the wheels on the kart? They look like 18"
-edit
and with 18" tires you will hit 23mph at 3600rpm.

 

[landuse]

The normal way to calculate your final ratio with a jackshaft is as follows:
('JS in' tooth count(larger count)/clutch tooth count)*('JS out' tooth count/rear sprocket tooth count).

So yours will be (14/10)*(60/10) = 8.4:1

You should be OK with this ratio. As DCProductions says, this will give you more torque, and sacrifice speed.

 

[fishheds]

Hey,got my parts in and got started,but the problem i'm having now is the axle chain doesn't seem to fit the axle sprocket.When I spin the rear wheel,with no tension,the chain seems to "climb" the teeth until it finally crosses the peak and falls into the next valley.
Would that make it #35 chain on a #40 sprocket?
The chain we pulled from the mini-atv seems to fit the sprocket well and,although they appear to be the same distance between pins,one seems lighter than the other.

 

[landuse]

Hey,got my parts in and got started,but the problem i'm having now is the axle chain doesn't seem to fit the axle sprocket.When I spin the rear wheel,with no tension,the chain seems to "climb" the teeth until it finally crosses the peak and falls into the next valley.
Would that make it #35 chain on a #40 sprocket?
The chain we pulled from the mini-atv seems to fit the sprocket well and,although they appear to be the same distance between pins,one seems lighter than the other.

It sounds as if you have a #35 on a #40 sprocket, but have a look at this site:

http://www.gizmology.net/sprockets.htm

It tells you how to work out what type of chain or sprocket you have. You basically have to work out the pitch of your sprocket or chain and go from there

 

[robbie]

I think you're getting good advice on the chain and sprocket sizes, but I just wanted to say that your son looks really short in the first photo.

 

[DCProductions]

I think you're getting good advice on the chain and sprocket sizes, but I just wanted to say that your son looks really short in the first photo.

 

[fishheds]

I think you're getting good advice on the chain and sprocket sizes, but I just wanted to say that your son looks really short in the first photo.

^ I had to think about that one for a sec.
Just took it for a test drive. Ran great.
Wish I had thought to clean the rust off the brake drum,though.
Brake lining caught hell.The first couple inches peeled off,so i'm thinking maybe i'll try a glue/rivet experiment.
I'm also eyballing an old leaf vac with a 5hp Honda.
Maybe throw on a torque converter.
This could get fun.I've been wanting to learn to weld and building an adult size cart would be a good project with the kids.
Maybe Santa will bring me a Harbor Freight wire feed.
Thanks for the help,guys.David