NRS Comutator clearance of clutch fingers

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JvanMaanen
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NRS Comutator clearance of clutch fingers

Post by JvanMaanen » Thu Feb 19, 2026 6:12 pm

is an almost touching clearance of the comutator terminal ( #4 cylinder) to the high speed clutch finger when engaged normal on the NRS. Mine seems like it could hit if there is any movement in the engine/transmission assembly. This is closest at top dead center. Shimming between engine and transmission would give more clearance.

thanks Jim


Jerry VanOoteghem
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Re: NRS Comutator clearance of clutch fingers

Post by Jerry VanOoteghem » Fri Feb 20, 2026 9:28 am

Is the terminal bolt maybe a bit too long? Protruding from the thumb nut more than necessary?

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Topic author
JvanMaanen
Posts: 197
Joined: Sun Jan 06, 2019 6:25 pm
First Name: Jim
Last Name: Van Maanen
* REQUIRED* Type and Year of Model Ts owned: 15 Touring, 19 roadster, 22 Coupe, 08 SR
Location: Friday Harbor, WA
MTFCA Life Member: YES

Re: NRS Comutator clearance of clutch fingers

Post by JvanMaanen » Fri Feb 20, 2026 11:16 am

Thanks Jerry, the bolts are all the same length and don't protrude from the thumb screws. Of course, I have no idea if the bolts or thumb screws are original. I will double check the timing and also check the thumb screws against those on my 15. there has to be some way I can get a little more clearance.

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