Remember this tractor ?
If you do, then you may remember that it is geared down really - really slow.
The local antique tractor club has " Tractor Rides " a few times throughout the summer that cover anywhere from 20 to 30 miles driving thru the back country roads.
They require that your tractor can go at least 10 MPH.
This tractor can probably run that in high gear but the engine is running about as fast as it will go to do it, so I want to change the gearing.
The drive sprockets on the rear axle have 12 teeth.
So I figure that if I'm running 10 MPH now at say 3,000 RPM, and if I change the drive sprockets to 24 tooth, then I should be able to run the same speed with the engine running half the RPM.
Does that sound logical to you guys ?
I got on ebay looking for 24 tooth sprockets for #60 chain and was a little surprised at some of the prices their asking for them.
After much searching, I found a pair of 21 tooth sprockets without center hubs for $29.99 with free shipping. That is less then most listings were wanting for one sprocket.
I pulled the rear tires and floorboards off the tractor.
Then I split the chain and pulled the drive sprockets off the rear axle.
Here are the new 21 tooth sprockets and one of the original sprockets that I have cut part of the teeth off on the band-saw.
The other original sprocket is on the lathe being turned down so the new sprocket can fit over it.
The old sprockets are pressed into the new sprockets.
Then they are welded together on both sides.
If you do, then you may remember that it is geared down really - really slow.
The local antique tractor club has " Tractor Rides " a few times throughout the summer that cover anywhere from 20 to 30 miles driving thru the back country roads.
They require that your tractor can go at least 10 MPH.
This tractor can probably run that in high gear but the engine is running about as fast as it will go to do it, so I want to change the gearing.
The drive sprockets on the rear axle have 12 teeth.
So I figure that if I'm running 10 MPH now at say 3,000 RPM, and if I change the drive sprockets to 24 tooth, then I should be able to run the same speed with the engine running half the RPM.
Does that sound logical to you guys ?
I got on ebay looking for 24 tooth sprockets for #60 chain and was a little surprised at some of the prices their asking for them.
After much searching, I found a pair of 21 tooth sprockets without center hubs for $29.99 with free shipping. That is less then most listings were wanting for one sprocket.
I pulled the rear tires and floorboards off the tractor.
Then I split the chain and pulled the drive sprockets off the rear axle.
Here are the new 21 tooth sprockets and one of the original sprockets that I have cut part of the teeth off on the band-saw.
The other original sprocket is on the lathe being turned down so the new sprocket can fit over it.
The old sprockets are pressed into the new sprockets.
Then they are welded together on both sides.
