Clutch Operation

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Stylo Seagull
Posts: 15
Joined: Thu Aug 15, 2013 12:28 pm
Location: Norwich

Clutch Operation

Post by Stylo Seagull »

Hi All

New to Seagull ownership, so please be gentle on my first post.

I have a '72 forty plus and a '69 featherweight, but both are direct drive type models.

Can anyone explain to me how the clutch mechanism works in a clutched seagull? I have an inquisitive mind ;)

I can see the lever on clutched models and a fork type effort down near the gearbox, but just wondered what went on inside.

Thanks - Loving this forum. I'm learning lots daily.

Jon
FP416G2
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charlesp
Posts: 2568
Joined: Mon Mar 06, 2006 1:37 pm
Location: Poole, Dorset, England

Re: Clutch Operation

Post by charlesp »

When the clutch is engaged the forks push the drive shaft, complete with crown wheel, away from the pinion. This removes the drive.
Stylo Seagull
Posts: 15
Joined: Thu Aug 15, 2013 12:28 pm
Location: Norwich

Re: Clutch Operation

Post by Stylo Seagull »

simple as that eh?

still, not sure why i'm so surprised when the seagull looks like simplicity itself.

so the gears are just wedged apart by the fork?..... excellent.
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Oyster 49
Posts: 3318
Joined: Tue Oct 26, 2010 6:55 pm
Location: Derbyshire, UK

Re: Clutch Operation

Post by Oyster 49 »

I think the original 102 clutch is great piece of work.

The gear sits on the prop shaft and is free to rotate around the prop shaft, and both the prop shaft and gearwheel have dogs. The gear is held in position by the shim washer and end cap. The gearshaft when moved by the clutch lever enages or disengages the dogs. Brilliant 8) Here's a picture :)

The gears are not wedged apart, but the dogs are. The gear just rotates, the shaft can go left or right..

So the options are
1. lever up, shaft to the right gear does not drive propshaft.
2. Lever down, shaft to the left, dogs engaged, shaft and gear rotate together.

It all runs in a mush of oil and water.
Attachments
102 gearbox innards
102 gearbox innards
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charlesp
Posts: 2568
Joined: Mon Mar 06, 2006 1:37 pm
Location: Poole, Dorset, England

Re: Clutch Operation

Post by charlesp »

Oyster's photo is a good one, and illuminates in detail my stupidity in omitting to remember the dogs.. Doh.
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