Subject: Re: [TR] TR3A flywheel bolt on ring gear

From: Rye Livingston <[email-masked]>
Date: Thu, 18 Feb 2016 01:31:56 +0000 (GMT)

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"Engine turns=C2=A0freely by hand even with the spark plugs in", sounds li=
ke a separate issue than the starter motor not engaging the ring gear.=0A=0A=
Rye=0A=0A=0AOn Feb 17, 2016, at 02:26 PM, [email-masked] wrote:=0A=0A=
=0AQuestion: were there different gear ratios on the ring gear? Reason I a=
sk, while I had the OD tranny out, I replaced the flywheel with a freshly =
machined one. It had a somewhat better condition ring gear already bolted =
on. I don't know the year of production of the replacement flywheel. Bolte=
d the same starter back in, but when I try to start the engine, the starte=
r clicks and whirrs, but doesn't engage. Jumped it with a good battery, se=
ems to be a strong electrical current going in. Engine turns freely by han=
d even with the spark plugs still in.=0A=0AThoughts?=0A=0ATerry Smith, '59=
 TR3A TS 58667=0ANew Hampshire where in a two day period it went from minu=
s 20 degrees to in the 50's. Gotta love New England!=0A=0A** triumphs@auto=
x.team.net **=0A=0ADonate: http://www.team.net/donate.html=0AArchive: http=
://www.team.net/archive=0AForums: http://www.team.net/forums=0AUnsubscribe=
/Manage: http://autox.team.net/mailman/options/triumphs/[email-masked]=0A=

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<html><body><div>"Engine turns&nbsp;freely by hand even with the spark plugs in", soun=
ds like a separate issue than the starter motor not engaging the ring gear=
.</div><div></div><div class=3D"x-apple-signature"></div><div class=3D"x-a=
pple-signature"><br data-mce-bogus=3D"1"></div><div class=3D"x-apple-signa=
ture">Rye</div><div class=3D"x-apple-signature"><br data-mce-bogus=3D"1"><=
/div><div><br>On Feb 17, 2016, at 02:26 PM, [email-masked] wrote:<br>=
<br></div><div><blockquote type=3D"cite"><div class=3D"msg-quote"><div cla=
ss=3D"_stretch"><span class=3D"body-text-content"><br>Question: were there=
 different gear ratios on the ring gear? Reason I ask, while I had the OD =
tranny out, I replaced the flywheel with a freshly machined one. It had a =
somewhat better condition ring gear already bolted on. I don't know the ye=
ar of production of the replacement flywheel. Bolted the same starter back=
 in, but when I try to start the engine, the starter clicks and whirrs, bu=
t doesn't engage. Jumped it with a good battery, seems to be a strong elec=
trical current going in. Engine turns freely by hand even with the spark p=
lugs still in.<br><br>Thoughts?<br><br>Terry Smith, '59 TR3A TS 58667<br>N=
ew Hampshire where in a two day period it went from minus 20 degrees to in=
 the 50's. Gotta love New England!<br><br>** <a href=3D"mailto:triumphs@au=
tox.team.net" data-mce-href=3D"mailto:[email-masked]">triumphs@au=
tox.team.net</a> **<br><br>Donate: <a href=3D"http://www.team.net/donate.h=
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n></div></div></blockquote></div></body></html>=

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From: "Randall" <[email-masked]>
Date: Wed, 17 Feb 2016 19:52:58 -0800

> Question:  were there different gear ratios on the ring gear? 

Yes.  Change was supposedly at TS50001, but after all these years there's no telling what you'll find on any particular car.
Earlier cars used a 9 tooth pinion gear on the starter (sorry, don't know the counts for the ring gear); later cars used a larger 10
tooth pinion and a correspondingly smaller ring gear.

-- Randall

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From: "Randall" <[email-masked]>
Date: Thu, 18 Feb 2016 15:45:29 -0800

> I'll pull it this weekend.  Is it possible to install these 
> upside down?  Not that I would of course.  That would be 
> stoooopid.  I have never been that.  Well, once, maybe.  
> Maybe twice.  Maybe twice a year, or was it day, or what was 
> it I did wrong twice in the past ten minutes??????

I tried deliberately installing it the other way (trying to get the motor farther away from the exhaust); but it wouldn't fit.  

But I believe that, if it did fit, it would still work.  The shaft seems to be on-center to the mounting holes, so the shaft would
stay the same distance from the ring gear.

On the one I have, you can also try rotating the adapter.  That didn't fit either.  I finally wound up just sticking a piece of
roofing tin between the starter motor and exhaust pipe.  In another 8 years or so, I'll find out if that worked :)  (Previous gear
drive starter lasted about 10 years before the exhaust heat cooked the grease and ruined the bearings.)

http://tinyurl.com/jjtqrgd

Randall