Chris59 Posted March 13, 2019 Report Share Posted March 13, 2019 Hello guys, I've found something rather funny about "6 pots" ring gears : could someone please explain why the teeths are chanfreined on the opposite side to the starter pinion ? My clue would be that it's an old stock who has been used : on TR250s, there is an inertia starter motor, it work the other way, so the ring gear need to be chamfreined But, as most (all ?) of my 6 pots engines (and I have some of these….) have their ring gear fitted/chanfreined to the opposite side of the stater motor pignon entry, and they ALL have pre engaged starter motor (ie as on a TR6) what's wrong in there ? Another point : who could supply good quality ring gears ? Again, I prefer to not waste time and money on poor quality parts. Thanks for your help, Quote Link to post Share on other sites
Bill944T Posted March 14, 2019 Report Share Posted March 14, 2019 All I know from past experience (or lack of) it won't take long for it to graunch and chew up the ring gear in three places, one place more than the rest if you get it the wrong way round. I'm sure others with more recent experience will tell you how to avoid another weekend's work....... Regards Bill Quote Link to post Share on other sites
boxofbits Posted March 14, 2019 Report Share Posted March 14, 2019 20 hours ago, Chris59 said: Hello guys, I've found something rather funny about "6 pots" ring gears : could someone please explain why the teeths are chanfreined on the opposite side to the starter pinion ? My clue would be that it's an old stock who has been used : on TR250s, there is an inertia starter motor, it work the other way, so the ring gear need to be chamfreined But, as most (all ?) of my 6 pots engines (and I have some of these….) have their ring gear fitted/chanfreined to the opposite side of the stater motor pignon entry, and they ALL have pre engaged starter motor (ie as on a TR6) what's wrong in there ? Another point : who could supply good quality ring gears ? Again, I prefer to not waste time and money on poor quality parts. Thanks for your help, The chamfer should be on the meshing side of the starter motor, to help the gears to mesh. It’s possible it was fitted back to front and I have seen this before. I’d imagine most of the TR specialists are likely to supply the same gear tbh and should be reasonable to good quality. Kevin Quote Link to post Share on other sites
Chris59 Posted March 15, 2019 Author Report Share Posted March 15, 2019 You are absolutly right Bill, but the better is the quality of the ring gear, the longer it will last. Yes Kevin, it should be, but it isn't : ALL my "sixes" with pre-engaged starter motor have their ring gear chanfreined on the wrong side. I don't share your opinion about the ring gears who can be bought from the usual suppliers : it don't equal the quality of the original ones, far from this ! Quote Link to post Share on other sites
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