Hi Norm,

I thought about an old conveyor belt a while ago but didn't think it was the type of rubber that would wear well under load.

A few things to consider below.

Using an old conveyor belt for a friction drive in a mower is a mixed bag. While it can be a cost-effective solution, several factors will influence how quickly it wears under load:

Material Composition: Conveyor belts are made from various types of rubber and composite materials. Some are designed for heavy-duty applications, while others are not. Older or worn belts may have already degraded, compromising their effectiveness and durability.

Load and Usage: Mowers face significant forces, on uneven terrain. If the conveyor belt is not designed for high-friction applications, it will likely wear out faster under these load conditions.

Friction Properties: The ability of the belt to grip the driving surface is critical. If the rubber is hard or slick, it may not provide sufficient traction, leading to slippage and increased wear.


Heat Generation: Friction generates heat, and excessive heat can accelerate wear. If the conveyor belt isn't designed to handle prolonged friction under load, it may degrade more quickly.

Testing: If you're considering using the old conveyor belt, you could implement it on a trial basis. Monitor its performance, wear rate, and functionality under typical operating conditions of the mower.

Environmental Factors: Exposure to moisture, UV light, and temperature changes can affect the longevity of rubber materials. If the belt is exposed to harsh conditions, its lifespan may be shorter

If the 12 mm belt is made from a durable, high-friction material, it may perform well even under considerable load.

while using an old conveyor belt may initially seem like a viable option, it is likely to wear out quickly if it is not suited for the specific demands of a friction drive system.

This does make me wonder what the original friction drive was made from possibly asbestos.


Cheers
Max.