36 inch wheels, Torque converter squeaking
- Thread starter AlexTampa
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studysession
CNC Guy
I want to see pics please? What wheels and where did you get them from?
First thought, is yes lower the gear ratio.
First thought, is yes lower the gear ratio.
B man
Tecumseh FTW!
is it like one of those self-propelled wagons?
jeremybentham
New member
You need a larger axle sprocket, or smaller clutch gear, not the other way around.
Thanks, thats what i initially thought
studysession
CNC Guy
Nice - Can't wait to see it.
r97
Measure twice cut once
so you have:
-36" DIAMETER (not circumference right) wheels
-60t axle sprocket, and 12t clutch, so 5:1 ratio
if all of that is right, we must now know:
-what engine you have
-what model torque converter you have
-what terrain you will be riding on, and how fast you want to go
sounds like you definitely need to re-gear to a lower ratio, if you give us the above info we can give you a good idea of what size sprocket to buy.
-36" DIAMETER (not circumference right) wheels
-60t axle sprocket, and 12t clutch, so 5:1 ratio
if all of that is right, we must now know:
-what engine you have
-what model torque converter you have
-what terrain you will be riding on, and how fast you want to go
sounds like you definitely need to re-gear to a lower ratio, if you give us the above info we can give you a good idea of what size sprocket to buy.
6.5 tacumseh, gotta check on the converter. I bought a used go kart and chopped it.
Concrete, no tricks, no sharp turns.
It needs to go fast enough to clear the frame as i launch it off a 4 foot dock into the water.so 18 mph or so. The frame is 24 x 72 but the wheel span is probably 36 inches. The front wheel bearings are a swivel for a barstool.
The point of it is a crazy video we are filming.
Doc Sprocket
*********
Freaky!
But, yeah- you're geared waaay too high.
But, yeah- you're geared waaay too high.
B man
Tecumseh FTW!
so your sending a TC and a tecumseh to a watery grave? don't for get to get it out of the water. there worth alot.
Bluethunder3320
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LOL^
what? im a little confused by this. ive never seen a go kart with tables as wheels.....
PICTURE!!!
what? im a little confused by this. ive never seen a go kart with tables as wheels.....
PICTURE!!!
attached is a picture of a 24" wheel only. I have since changed to 36".
I cannot post a picture of the whole cart. This is part of a marketing video that cannot get out until the video is released.
It is going to make it out alive and kicking, believe me.
Attachments
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wheel.jpg
Sounds a bit Flintstones to me. LOL
studysession
CNC Guy
Yeah, but the Flintstones are cool
oldbikerarlo
Old guy
You could use your jackshaft off of your TC to gear it down enough to take the stain off the TC and still get enough speed to clear the frame in a jump off a dock. Just get a little run at it.
This sounds like a one time thing so why do you care if the TC squawks a little.
This sounds like a one time thing so why do you care if the TC squawks a little.
wall gator
New member
Alextampa?
Are you from Tampa?????? I,sure hope, your not gonna put that in Salt Water!!!!!! As if, any water would do it any good.
Are you from Tampa?????? I,sure hope, your not gonna put that in Salt Water!!!!!! As if, any water would do it any good.
Doc Sprocket
*********
This project has my attention! I can't wait to see the result- it's gonna float, right? You hope?
Anyways, in the interest of science, I ran some numbers. To run that beast up to a theoretical 19 MPH (assuming your engine turns at a stock, governed 3600RPM) you're going to require a compound, overall gear reduction of 20:1. As it is, your theoretical max speed is 77MPH. No wonder your CVT is screaming...
Back on topic. To achieve a 20:1 reduction, you will need another jackshaft, set up as follows.
Your existing 12T CVT output sprocket going to a 40T jackshaft input sprocket. On the other end of that jackshaft will be a 10T sprocket, which gets connected to your existing 60T axle sprocket. This compounds to a total reduction of 20:1.
A few further points- keep in mind that these calculations are theoretical, based on the engine having enough oomph to overcome weight, friction, drag, etc. Actual top speed may be less, but IMO at 20:1, you should have enough power as long as you keep an eye on weight and friction. Keep it as light as you can, and make sure it's rolling on bearings...
Also, some CVT's have the ability for 10% overdrive, there's a fair chance yours does. You could take advantage of that fact and gear down another 10% to get all the available torque you can and still theoretically hit the same launch speed.
Anyways, in the interest of science, I ran some numbers. To run that beast up to a theoretical 19 MPH (assuming your engine turns at a stock, governed 3600RPM) you're going to require a compound, overall gear reduction of 20:1. As it is, your theoretical max speed is 77MPH. No wonder your CVT is screaming...
Back on topic. To achieve a 20:1 reduction, you will need another jackshaft, set up as follows.
Your existing 12T CVT output sprocket going to a 40T jackshaft input sprocket. On the other end of that jackshaft will be a 10T sprocket, which gets connected to your existing 60T axle sprocket. This compounds to a total reduction of 20:1.
A few further points- keep in mind that these calculations are theoretical, based on the engine having enough oomph to overcome weight, friction, drag, etc. Actual top speed may be less, but IMO at 20:1, you should have enough power as long as you keep an eye on weight and friction. Keep it as light as you can, and make sure it's rolling on bearings...
Also, some CVT's have the ability for 10% overdrive, there's a fair chance yours does. You could take advantage of that fact and gear down another 10% to get all the available torque you can and still theoretically hit the same launch speed.
Are you from Tampa?????? I,sure hope, your not gonna put that in Salt Water!!!!!! As if, any water would do it any good.
No, the river.
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