Got one of them Bosch multi material drills and had another go with my dewalt this time using some 2 stroke oil from my petrol mountain board as a coolant. Was patient this time and two full drill Battires later i’ve manage to drill all five wholes.
Now I need to find if I can make a 8mm bore pulley fit securely on a 5mm bore shaft. Has any one had any luck with reducing bush’s. My motor shaft is 5mm with a flat section. I incorrectly ordered 8mm to 4mm reducing bush from RS which I tried hand drilling out to 5mm but it’s ended up lobsided. I would have order another but they don’t do a 8 to 5mm and next one up is a 8 to 6mm reducer.
I have however ordered a new pulley which I think has same pitch but with one less tooth 15 not 16 but to fit a 5mm bore but it will be a couple of weeks before it arrives. Does this look right.
This is pulley kit from eBay. 16 tooth on motor cog, 15mm wide pully 3M pitch. Yes I know the mount is wank.
Wrong size reducing bush i’ve Tried.
This is the new cog i’ve Ordered