Alternator belts failing

[Rikki Kitto]

Managed to snap 2 this week am I tightening them too much

[Tractor Dave]

Yes. Or you pulley is out of alignment.

[Error404]

Go easy tightening it with that adjuster I made you Rik, it’s easy to over do it

[Rikki Kitto]

Cheers peeps how much slack should i have about 10mm maybe

[Tractor Dave]

Cheers peeps how much slack should i have about 10mm maybe

If using a new belt, approx 2mm movement between pulleys using firm thumb pressure. Used belt is approx 5mm.

[Rikki Kitto]

Don't think it was too tight then maybe something has moved

[Tractor Dave]

You definitely got the right belt? They rarely snap, even when very tight. Also, check pulleys for damage.

[Rikki Kitto]

Using a slight shorter one as the tensioner I use is at it's limit with an 890cm belt so dropped to 878cm, the last one that snapped however was from TPS so would of been the right one. Looked under the car just now and the remains of the last one were wrapped around the pulley stripped to the wire, nightmare getting it all off

[Bowie69]

Twist the belt 90 degrees, if you do this it is not too tight, if it easily goes more than 90, it is too slack!

Always test on longest run.

2mm movement sounds too tight to me.

[Rikki Kitto]

You know when ya just have to scratch that itch no matter what, well fitted the new belt so hope it's gonna be OK

[newsh]

I thought I was daft, out in the shed working on the bike

[LSG]

Mate anyone who works on motorbike is daft . I should know.

[newsh]

How many daft points do I get for fitting heated grips on an R1M

[LSG]

If I gave you points I would have to give them to the fella who had them fitted to his turbo zzr1400 with hi handlebars

[Rikki Kitto]

Full marks for effort bud anyhoo got to work without the belt snapping 15 mile journey round the M25 in heavy traffic so fingers crossed it was me just been stupid nipping the others up too much