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Flat Drive Belts Need Repair or Replace

Brianne163

Registered
Hi
First post so hope I am in the right area.
At our Historical Village we have a vintage belt driven chaff cutter which we use for demonstrations. Last time out, the drive belt broke. As we are a self funded, all volunteer operation, funds are always short so we are thinking of making a drive belt from a used canvas fire hose that we have. Flattened out it is 100mm wide and obviously double thickness. I have read somewhere about this being used but cannot remember where.
My thoughts were to trim about 100mm down on the edges of one end and insert it into the other end. Possibly then glue and stitch the two ends together.
Am I on the right track doing it this way or would a full overlap be better?
I would have to make sure the join was trailing in direction of travel.
I have attached a pic to show the unit.
Has anyone done this sort of thing successfully?
Regards
 

Attachments

Jebaroni

Registered
Age
39
I have found that USED belting from round hay balers or cotton pickers can be gotten for free from an ag equipment dealer and does a very good job. All you need to supply is the lacing, which can also be purchased from the same stores, if needed. Lacing lasts a long time, so one box of lacing may contain enough clips to last for years and years.
 

Bill Hazzard

Registered
Last Subscription Date
08/28/2008
If the belt that broke is the one that is on your photo, why not lace it back together and keep using it. It looks to be in good condition. The belt is too loose the way it is so a shorter belt will be better.
 

BMyrkle

Subscriber
Last Subscription Date
03/13/2020
If the belt that broke is the one that is on your photo, why not lace it back together and keep using it. It looks to be in good condition. The belt is too loose the way it is so a shorter belt will be better.
I agree, re-lace don't replace. It's a good skill to have.
 

Inter Bloke

Registered
If the belt that broke is the one that is on your photo, why not lace it back together and keep using it. It looks to be in good condition. The belt is too loose the way it is so a shorter belt will be better.
I agree with the others, relace the old belt ! Most workshops that service balers will do it reasonably cheap or you can get the old style joiners from rural outlets by the strip and use that, it should be adequate for this purpose. I would be a bit wary about using old fire hose, I have seen it used successfully on slow moving low loaded belts like the elevator belts of the cutters outload up to the bagger, but for the main drive I doubt it would be man enough to take the strain, it would be essentially a "two ply" belt and not designed for that load.
 

Brianne163

Registered
Thanks for all your comments guys.
The picture is from several years ago so the original belt is not looking that good now. Much food for thought. I have saved the lacing page for future use. Very interesting.
Thanks again.
 

I like oldstuff

Registered
Last Subscription Date
11/09/2015
A hose won't work if used as is. Think of it as two belts one over the other. The inside layer runs on the pulleys while the outer runs on the top of the other one. They will want to rotate at different rates due to the diameter differences and will fight each other consuming a ton of horsepower. The chafing will cause a fast failure.
To use a belt made from hose you'll have to do labour intensive cutting it lengthwise so there is only one layer. Then the fibres will start unraveling in use.

Why not just move the engine back to tighten what's in the picture.
 
Last edited:

Brianne163

Registered
The belt looks loose but it has a jockey pulley arrangement for tensioning so that it is allowed to slip when not needed.
Thanks
 

Scotty 2

Registered
I hope you've got the good old Ronny running right now. There's something wrong if you need "start ya bastard"

I too wouldn't use the fire hose as a belt.

Cheers Scott
 

Brianne163

Registered
Original belt shortened 2" and laced up. Yet to try.
For practice I laced up the fire hose anyway.
I will let you all know how they go.
Thanks for all the help
 

Norm W

Registered
Oldstuff's statement about the fire hose, "A hose won't work if used as is. Think of it as two belts one over the other. The inside layer runs on the pulleys while the outer runs on the top of the other one. They will want to rotate at different rates due to the diameter differences and will fight each other consuming a ton of horsepower" left me with a question. :confused: What would happen if the hose was laced as a Mobius Loop so that the outside and inside were the same side? :shrug:
 
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