Foam tyre inserts

[Mowerman]

HI, another new guy here!

Anyone Know what ads + disads you get with foam inserts?

Thinking about using in one of my TDs

Thanks

[SGNAS]

Rc tyres are not pressurised as on full size cars.

On a touring car (where the tyre has no deep or curved tread) this leads to the outer edges (siewalls) supporting most of the car. The central part of the tyre makes little contribution to the grip/traction available from the tyre. By putting a foam shaper in the tyre this gives the tyre a bit of a curve which deforms as the car is put down on a surface and spreads the weight of the car over the full width of the tyre giving more even grip and even wear.

This is simplifying as if you read into it they start talking about having an air gap between tyre and foam, different density foams etc..

On a heavy monster truck the problem is similar and added to this is substantial deformation in the sidewall (which is all that is supporting the truck, no pressurised air).

If you are running your MT on hard surfaces an are looking for speed then foam is your thing. Better grip and more speed, as energy is not wasted constantly deforming the tyre giving less rolling resistance (ever tried riding a bike with nearly flat tyres, it's a lot of effort.).

If, however, you are running on rough surfaces or rock crawling having super soft tyres is an advantage as you want then to conform to the surface you are running on to give maximum grip.

The tyres that were going cheap on the magazine (look great on the Twin Dagger) came with foams. These seemed, to me, to be far to big and too hard to provide any benefit at all. When fitted the tyres were all "puffed up and solid".

[Mowerman]

Thanks for that - I guess i will leave them out!

cheers