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About starter ring gear


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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, 

 

 

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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 

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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

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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 !

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