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Layshaft spring

Technical help for Series one, two and three Lambrettas. Models include the Li, Li Special, TV, SX, GP, Serveta and API/SIL models

Layshaft spring

Postby Psychedelicropcircle » Fri Feb 14, 2020 2:40 pm

Does someone have the spring for the kickstart piston & Layshaft spring to hand for measuring purposes?

The spring I am trying to get into the layshaft is 35.5mm and a complete basterd :oops:

Much obliged in advance

Scott.
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Re: Layshaft spring

Postby Scooterdude » Fri Feb 14, 2020 2:47 pm

Got one of those MB super silly strong ones that measures 25.5 mm and a standard one that measures 23mm. Hope this helps.
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Re: Layshaft spring

Postby Psychedelicropcircle » Fri Feb 14, 2020 3:07 pm

25mm lol it’s defo a KS spring then :lol: bought long ago no idea where but it was all in the one bag bloody scooter dealers :oops:
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Re: Layshaft spring

Postby Scooterdude » Fri Feb 14, 2020 3:31 pm

I wouldn’t recommend the MB one either they’re atrocious.
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Re: Layshaft spring

Postby HxPaul » Sat Feb 15, 2020 10:21 am

If its the one spring with bearings on either side they are a bastard to fit.Putting them in a bag to fit them is the best idea,that way if the bearings come out they will still be in the bag and not rolling around on the floor.
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Re: Layshaft spring

Postby Kev Fox » Sat Feb 15, 2020 11:37 am

HxPaul wrote:If its the one spring with bearings on either side they are a bastard to fit.Putting them in a bag to fit them is the best idea,that way if the bearings come out they will still be in the bag and not rolling around on the floor.

https://www.facebook.com/groups/1669987 ... 342847291/
This is a link to a facebook post about fitting the spring & bearings. This aint a bad idea for anyone that struggles.
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Re: Layshaft spring

Postby Scooterdude » Sat Feb 15, 2020 12:12 pm

I use an old selector and squeeze the two together I found this is easiest way.
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Re: Layshaft spring

Postby dscscotty » Sat Feb 15, 2020 2:47 pm

CASA Selector (Blue) are great,not to heavy on gear change, great for 5 speeds as well which do tend to need a higher loaded spring to stop any issues, particularly to stay in 5th
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Re: Layshaft spring

Postby bookertmgs1 » Sun Feb 16, 2020 9:23 am

Scooterdude wrote:I use an old selector and squeeze the two together I found this is easiest way.


Agree - this is the simplest way I’ve used. If you search this forum there is a full thread about easiest way and a video to demonstrate
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Re: Layshaft spring

Postby HxPaul » Sun Feb 16, 2020 10:36 am

bookertmgs1 wrote:
Scooterdude wrote:I use an old selector and squeeze the two together I found this is easiest way.


Agree - this is the simplest way I’ve used. If you search this forum there is a full thread about easiest way and a video to demonstrate

The trouble with that method is,you need two selectors,not everyone has got two(one new one and one old one)
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Re: Layshaft spring

Postby Psychedelicropcircle » Sun Feb 16, 2020 2:31 pm

It’s been years since I done one ( with exception to a cyclone box 3 yr ago or so, can’t remember that one) One previous to that I pushed in a ball bearing with each hand & wapped the head on the sliding dog into place! My forehead is pretty sore after trying with a 35mm spring :lol:
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