big belt on the SX

[Big G]

the original belt I got on the SX looked a little frayed when I got the car, but still lasted a few months before finally snapping.

new one on and 5 or 6 meetings later and it snaps again.

Should I put this down to a 1 off or has anyone else had problems with the big belt?

Cat has been run with the undertray on outdoors and only on grass/astro so no little stones could of got in.

[tiny tom]

I have had the same problem, it is down to dirt getting into your drivetrain

[Big G]

my pulleys are super clean though. weird.

[jim76]

maybe the slipper too tight? Haven't had a belt snap on me yet (kiss of death!)

[Big G]

the slipper is audible during initial acceleration so I wouldn't of thought it was that. out of the few runs I did on the new belt most of those were on polished floor so grip was low.

[bigred5765]

are the pulley adjuster even side to side?? or over tight??

[Fabs]

Very simple, your pulleys are worn and are cutting through the belt, change them as well as the belt and problem solved.

[MattW]

Agreed with Fabs - the only time i've snapped belts, it's because the pullys have worn.

[Big G]

I think I might put new pulleys on anyway just to be on the safe side

[moth898]

you might also want to check the top deck for any cracks.

[Big G]

it's an atomic carbon top deck. looks "as new" and you have to open the hole slightly to get the top deck in the gap.

[moth898]

That might be your problem, the top deck is what keeps the belt at the proper tension. If you opened the holes, the belt could move in a landing or jump. I recomend you go back to the original schumacher top deck.

[Big G]

what I mean is when fitting the top deck I have to flex the chassis to widen the gap that the top deck fits into. sorry it that was vague what I said previous post.

I'll measure both top decks to check the length is the same

[Big G]

measured my AC top deck against my standard one and they are identical in size. When I fitted the last belt it was reasonably tight, but over time it has more and more slack in it.

maybe it's just a 1 off and the new belt I just put on will last ages.

[moth898]

god speed my son:)