New to karts

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CKC & Dad

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My sons 18 & 13 andyoungest daughter, 14 are new to karting. We have had four wheelers, boats, and stock cars, but this our first project together, and I must admit while I know a lot about my boats and stock cars, I don't know anything about Karts. I can figure somethings out, but some things I am a babe in the woods. We have just bought a rolling chassis of what I think was a 1990's Murray of some sort. That is just a W.A.G. based on some google image searches. I have a few issues which I need to sort out so The kids and I can get there resto project going.
1. It appears that there is a drive system that starting at the axle and working towrds the engine has a 54 tooth sprocket on the axle, a 12 tooth sprocket on a jackshaft. This is driven by a +/- 7" split (?) pulley with a centrifugal clutch of some sort. This pulley looks like it is some kind of a CV type belt reduction or torque converter. It looks like it would get narrower as the clutch engaged thus enlarging the diameter of the working diameter of the pulley. Can someone tell me if I am on the right track? wrong track? half right? half crazy? I will post some pics, if I figure out how.

2. This cart has 17" rear wheels on a live axle. Just pushing it around the garage, it is hard to turn and won't turn when pushing backwards. Is this just a characteristic of the big tires and live axle. Will it be hard to drice for a 100# small adult or teen? Should I invest in removing the live axle and installing a rear diff axle?

I have other questions, but I'll let these do for now.

Thanks
 
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OK I figured out that it is a Comet 20 torque converter and that seems to be a good thing. Can you buy just the pulley and parts that go on the engine? Or do you have to buy the whole kit? I am putting a HF or Lifan 6.5 on it.
 
r97

r97

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a diff is un-needed, for the tc all you need is 1 belt and one 20 series driver. 6.5 hp will be fine you may want to change your gear ratio if you plan on doing a lot of off-road. for the steering my best guess is friction and mis aligned tie rods, i'm not really sure though so ask someone who knows more about steering
 
DirtTrackRacer_07

DirtTrackRacer_07

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A differentail will get you stuck and will work like a single drive.

Im not sure on the steering with out seeing it

The motor should have a clutch with a belt that runs to your tq that turns your jack shaft which a chain on the sproket of your rear axle and jack shaft turn in sequenche with how many rpm the engine is turning.

The Rpm of the engine determines how closed the clutch on the motor and tq are givining you a little bit of a gear ratio there.

As the belts climb up the pulleys, it takes more to turn them faster givin you gear.


I think i just confused myself.

Let me know if you understand.
 
fowler

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the steering may not have ackman princable
this means the steering pivot * should be angled in a little
in fact they should make a line to the centre of rear axil



*the bit that the teirod connects to sorry i fotrgot what it is called
someone please help
 
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I appreciate it. I found a website I found sells the part but it says that the 20 that is stamped on the converter is not the series, it is the angle of something or another. How do i find out which series I have? It said something about the 20 is a symmetrical set and the 30 is a asymmetrical set. On the steering, I might have been unclear. The steering itself works. Its just that when you pull or push it backwards the frontend just slides. I have the same thing happen on backhoes when you lock the rear end, it causes the front end to not turn. That why I thought the live axle might be causing it.
I can't load pics, but the kart is in pics in my photo albums on my profile page.
 
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