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PROGRESSIVE FORK SPRINGS

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

PROGRESSIVE FORK SPRINGS

Postby northernpete » Sat Mar 18, 2017 5:59 pm

Rebuilding my forks and putting progressive springs in....question is,which way round? Tighter coils to top or vice versa?
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Re: PROGRESSIVE FORK SPRINGS

Postby steve t » Sat Mar 18, 2017 6:05 pm

Can't see it makes any difference as long as they are both the same a spring is a spring a adult will be along shortly to correct me if I'm wrong :lol:
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Re: PROGRESSIVE FORK SPRINGS

Postby dickie » Sat Mar 18, 2017 6:18 pm

steve t wrote:Can't see it makes any difference as long as they are both the same a spring is a spring a adult will be along shortly to correct me if I'm wrong :lol:


There is a difference but it's a bit like saying your lambretta is faster if you have a poo before you go for a ride.

Tight coils to the top though.
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Re: PROGRESSIVE FORK SPRINGS

Postby northernpete » Sat Mar 18, 2017 6:43 pm

Thanks....for the spring info and the rudimentary tuning advice.... :lol: :lol: :lol:
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Re: PROGRESSIVE FORK SPRINGS

Postby Tractorman » Sat Mar 18, 2017 7:36 pm

dickie wrote:
steve t wrote:Can't see it makes any difference as long as they are both the same a spring is a spring a adult will be along shortly to correct me if I'm wrong :lol:


There is a difference but it's a bit like saying your lambretta is faster if you have a poo before you go for a ride.

Tight coils to the top though.

Why is this?
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Re: PROGRESSIVE FORK SPRINGS

Postby dickie » Sat Mar 18, 2017 7:48 pm

Tractorman wrote:
dickie wrote:
steve t wrote:Can't see it makes any difference as long as they are both the same a spring is a spring a adult will be along shortly to correct me if I'm wrong :lol:


There is a difference but its a bit like saying your lambretta is faster if you have a poo before you go for a ride.

Tight coils to the top though.

Why is this?


It reduces unsprung mass and thereby allows the suspension to react more quickly to the road surface.

Any object will accelerate faster if it's inertia (mass in this case) is lower.

Nevertheless, it's so marginal that it's neither hither nor thither.
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Re: PROGRESSIVE FORK SPRINGS

Postby Tractorman » Sat Mar 18, 2017 10:16 pm

Thanks for that info, dickie
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