Author Topic: Model M throttle twist assembly  (Read 3065 times)

Scooter4

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Model M throttle twist assembly
« on: May 26, 2023, 05:19:19 PM »
Good evening,
I have a model M I fixed up years ago and have never started because I am missing some throttle twist parts.  I have a few pictures from this site, but none showing how the twist tube is held on or what the retainer that does that looks like or the inside of the twist tube.
This is an odd design.
I am wanting to make parts 770, 762 and 763.  I have all the other parts.  Refer to attached parts image.
I would appreciate pictures and some measurements.
Thank you,
Scooter

ramwing7

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Re: Model M throttle twist assembly
« Reply #1 on: July 21, 2023, 01:20:06 PM »
Are you making any headway on these parts?
I find myself in need of 770. I don’t know what it is or what it does. Thought I could make one if I had some dimensions.
I noticed Wayne Mahaffey has 763.
I have 762. It’s fairly involved piece, so I don’t know how to communicate about it. Perhaps if you asked questions perhaps I could answer them.

Ricks

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Re: Model M throttle twist assembly
« Reply #2 on: July 21, 2023, 05:42:37 PM »
Are you making any headway on these parts?
I find myself in need of 770. I don’t know what it is or what it does. Thought I could make one if I had some dimensions.
I noticed Wayne Mahaffey has 763.
I have 762. It’s fairly involved piece, so I don’t know how to communicate about it. Perhaps if you asked questions perhaps I could answer them.

Part 770 is unnecessary. I have assembled many of these without it, never a problem. Wayne has all the parts for this style of throttle, and his rotating tube is made out of a thicker than stock material, and works excellent.
Rick

ramwing7

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Re: Model M throttle twist assembly
« Reply #3 on: July 22, 2023, 07:55:54 AM »
Sure can do unnecessary.
Thanks 😁

Scooter4

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Re: Model M throttle twist assembly
« Reply #4 on: July 22, 2023, 10:18:04 AM »
Good afternoon,
a couple of photos of inside and outside of 762 throttle tube would be much appreciated.  It looks like there might be some piece added inside of it from the parts diagrams.
If I can see photos of a real one I will know enough to decide if I have the ambition to make one.  Each time I make a different spiral, I have to make different tooling or do them by hand.

How the spiral is held on with 763 is the part I do not understand.

Thank you,
Scooter

Scooter4

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Re: Model M throttle twist assembly
« Reply #5 on: September 25, 2023, 06:08:23 PM »
Good evening,
finally after much searching have found enough pictures on here of all the parts to make the parts I needed. Because the slide has a tang on it at an angle I had to make several cardboard tube mock ups to get it right (or close enough).

Now that I have made the parts and assembled one it is embarrassingly simple though complex looking.

I have finally driven this 1956 that I fixed up in 1996 and it runs great.  It is easy to find why people like the automatic since it is easier to drive.  I do still like the challenge of the shifter.

Scooter

pd

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Re: Model M throttle twist assembly
« Reply #6 on: September 26, 2023, 04:56:29 AM »
Good evening,
finally after much searching have found enough pictures on here of all the parts to make the parts I needed. Because the slide has a tang on it at an angle I had to make several cardboard tube mock ups to get it right (or close enough).

Now that I have made the parts and assembled one it is embarrassingly simple though complex looking.

I have finally driven this 1956 that I fixed up in 1996 and it runs great.  It is easy to find why people like the automatic since it is easier to drive.  I do still like the challenge of the shifter.

Scooter

Good you can ride that bike after 27 years .
I'm just guessing that you finally 'retired' enough to finish the project ? ;)

You should post some pics or a video .

Pete . :)
Goes around , Comes around . :)

Scooter4

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Re: Model M throttle twist assembly
« Reply #7 on: September 26, 2023, 03:57:40 PM »
Good evening,
I wish I was close to retirement. At least 10 years to go.
Attached is image of bike.  Picture is from before I put the throttle stuff on. Should have washed it first. It deserves a good wash after all these years.
Scooter
« Last Edit: September 26, 2023, 03:59:37 PM by Scooter4 »

pd

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Re: Model M throttle twist assembly
« Reply #8 on: September 27, 2023, 05:10:02 AM »
Looking through the dust , you did a very nice job on the bike .
Is that bike in our registry ?

Pete . :)
Goes around , Comes around . :)

Scooter4

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Re: Model M throttle twist assembly
« Reply #9 on: September 27, 2023, 03:59:50 PM »
Good evening Pete,
Thank you for the complement. I do not have the Simplexes in a registry.
Thanks,
Scooter

pd

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Re: Model M throttle twist assembly
« Reply #10 on: September 28, 2023, 05:17:08 AM »
Good evening Pete,
Thank you for the complement. I do not have the Simplexes in a registry.
Thanks,
Scooter

If you post , or send to kartjockey , the motor and frame numbers , they could be added to our registry .


Pete . :)
Goes around , Comes around . :)