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Author Topic: Thread size on the steering stem of the Tonti bikes - Le Mans 1-3 T3 G5 etc  (Read 1410 times)

Offline Simon_London

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Thread size on the steering stem of the Tonti bikes - Le Mans 1-3 T3 G5 etc
« on: September 30, 2019, 07:20:02 AM »


Can anybody tell me the thread size on the steering stem of the Tonti bikes - Le Mans 1-3 T3 G5 etc

I believe its M25 fine ?1mm ?0.75mm ?1.25mm

Many thanks

simon
« Last Edit: September 30, 2019, 07:46:51 AM by Simon_London »
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Offline Simon_London

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Re: Thread size on the steering stem of the Tonti bikes - Le Mans 1-3 T3 G5 etc
« Reply #1 on: September 30, 2019, 07:54:36 AM »
I think I can answer my own question ! M25 1.0
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Offline Groover

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Re: Thread size on the steering stem of the Tonti bikes - Le Mans 1-3 T3 G5 etc
« Reply #2 on: September 30, 2019, 08:06:07 AM »
That metal is really soft. Are you going to go over the threads?
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Offline Simon_London

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Re: Thread size on the steering stem of the Tonti bikes - Le Mans 1-3 T3 G5 etc
« Reply #3 on: September 30, 2019, 11:21:06 AM »
 I want to extend the thread down the stem.
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Offline Tom

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Re: Thread size on the steering stem of the Tonti bikes - Le Mans 1-3 T3 G5 etc
« Reply #4 on: September 30, 2019, 07:13:15 PM »
Lowering the front end?
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Offline nc43bsa

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Re: Thread size on the steering stem of the Tonti bikes - Le Mans 1-3 T3 G5 etc
« Reply #5 on: October 01, 2019, 12:48:47 AM »
Putting the stem in a frame with a shorter neck?
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Offline Groover

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Re: Thread size on the steering stem of the Tonti bikes - Le Mans 1-3 T3 G5 etc
« Reply #6 on: October 01, 2019, 07:47:45 AM »
My guess is that he plans to use the older chrome T3/G5 style steering head nut that goes down further, instead if the upside down type used on the later G5/SP which are black and need less threads.


That's my bet  :cool:
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1980 Piaggio Vespa P200E
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1980 Vespa Grande Moped
1980 Vespa SI Moped
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