Re: 175A alternator belts
I have adjusted the alignment and it is spot on.toggle quoted messageShow quoted text
My theory is that I have been using B section belts (17mm) and the alt pulley has 84mm diameter. (This was what was on the boat when I bought her in 2017.) and according to belt specs The minimum diameter pulley should be 112mm.
Now Optibelt do a 17mm B section belt that can cope with 90mm pulley. I have ordered a pair but that is still larger than my 83mm.
If my theory is correct then I will have to machine the pulleys to accept 13mm belts such that they do not bottom out as 13mm belts can cope with smaller pulley diameters.
Alternatively get a 112mm pulley for the alternator but then pulley ratio will be close to 2:1 not 3:1
Or switch to a serpentine belt which involve new pulleys for both alternator and the engine.
So my first port of call is to find out what pulleys other Amel owners are using.
On 13 Aug 2020, at 15:09, Bill Hall <billhall95688@...> wrote: