Hello all. Ever the skinflint, I’m looking for a way to save money when replacing the pinions on my old Avid machine. I’m in the UK, so postage and so on adds up. After countless hours, I think I’ve narrowed down an off-the-shelf pinion from a UK supplier which will fit the bill, if I modify the aluminium pulley a bit, rebore the pinion, cut a keyway. I’m a tinkerer, and money is tight.
My question, though, is what precision I’m looking for with this replacement pinon, in terms of DIN specs? I’m finding a few conflicting suggestions, and I’m bearing in mind that although this is a lovely machine it’s not a super-precise kind of deal, and I’m only cutting wood in general.
For reference, the pinion in question is the YG20-20 from HPC Gears in the UK, their PDF sheet is here: https://www.hpcgears.com/pdf_c33/23.108-23.113.pdf
ps, I know officially the old style pinion and pulley arrangement doesn’t come apart, but, well, mine did.
edit: I’ve had a reply from the suppliers, their gears are DIN 8 (approx AGMA 9)