new starter motor is rubbish

[Quart Meg Miles]

Its been quite some time since we discussed starter motors.
I always had issues with the original 9 Tooth starter motor with it jamming even when I replaced it with a new one
I changed over some years ago to a 10 tooth one and the issues have never reappeared.
I believe Lotus used 9 Teeth bendix but similar Fords used 10T.

Same here; after years of wearing out 9-tooth pinions, even with new ring gears, I fitted a 10-tooth pinion on an old motor with yet another ring gear in 2017 and have not had any trouble since. I believe Brian Buckland recommends it too.

[StressCraxx]

Its been quite some time since we discussed starter motors.
I always had issues with the original 9 Tooth starter motor with it jamming even when I replaced it with a new one
I changed over some years ago to a 10 tooth one and the issues have never reappeared.
I believe Lotus used 9 Teeth bendix but similar Fords used 10T.

Same here; after years of wearing out 9-tooth pinions, even with new ring gears, I fitted a 10-tooth pinion on an old motor with yet another ring gear in 2017 and have not had any trouble since. I believe Brian Buckland recommends it too.

Meg, agree with you. The pitch diameter of the 10 tooth pinion is about 1mm larger than the 9 tooth pinion. If the center to center distance of the flywheel to the bell housing bore is slightly wide, the larger pinion will indeed help with good mesh at the gear pitch line.

[checkrail]

I have now taken my original motor to the local guy for checking over and new brushes.
At the risk of repeating myself, that 9 teeth pinion one has never jammed once in four years, so why change it for a 10?

John.

[2cams70]

Lots of talk and complaints but no pictures of the carnage. You know what they say about pictures

[checkrail]

I'm sorry but I don't understand what you mean, in any case I am unable to post photos on here

John

[2cams70]

It really helps if you have pictures. Words can only convey so much. I take it on board though if for some reason you are unable to post pictures.

[Quart Meg Miles]

I have now taken my original motor to the local guy for checking over and new brushes.
At the risk of repeating myself, that 9 teeth pinion one has never jammed once in four years, so why change it for a 10?

John.

I didn't have trouble with the starter for fifteen years (1984), but more recently the lifetime of pinions has got shorter, especially in terms of miles, and I suspect the that manufacture of the pinions has changed over fifty years.

Whatever, the 10-teeth have survived in my hands for six years and 17,000 miles, so I still have a spare (10-tooth) pinion. Having reread your posts I realise that mine had not so much jammed but worn so badly they wouldn't engage.

[checkrail]

Reported to Ebay about seller refusing to reply to my emails, that worked! He replied to me with a load of woffle but eventually said he would send me an exchange.
I replied that this should have been done last Friday and I expect this to be despatched today AM

All praise to Ebay for quickly contacting him John

[billwill]

I'm sorry but I don't understand what you mean, in any case I am unable to post photos on here

John

I think that photos ban only lasts a few weeks, you seem to have been a member far longer.

There are good messages for learning in the little-known "Website Questions & Suggestions" section of this website.

[checkrail]

I don't have a photo ban, my computer skills are far too basic for posting photos.
After all the hassle getting the motor exchanged I have Ebay to thank for sorting it. I got the local guy to repair my original motor for £35 which is now back on the car, so I now have a 'new' spare

John

[andyelan]

Hi There.

Not sure if everyone is aware but there are two different ring gears used on the Plus 2. One has 110 teeth and goes with the 9 tooth pinion and the other has 128 teeth and goes with the 10 tooth pinion. The 128/10 is used on the 5 speed Plus 2 but it might also be more of an age related thing. Also, I don't know if it might be possible to incorrectly fit a 128 tooth ring gear to any car and then not change the starter pinion. It might then be that a worn 9 tooth pinion may mesh with a 128 tooth ring gear while a new one won't.

Finally, although it shouldn't be necessary to be messing with a brand new starter motor, there's always the option of putting the old pinion on the new motor.

Regards
Andy