1960 Sportsman

[Ricks]

Here is the bike, mostly complete.  I need an original air filter, which I might never find.  I do have a regular Simplex air filter to put on it for now.  I will order a couple of clutch weights from Wayne and see if that takes care of the rattle.  

I would really like to find a more original tire for the bike, as these are really too big and don't allow the bike to sit on the center stand properly. I do have one original tire, a little worn, but usable if I can find another.

[pd]

Nice , so far , Rick .

" The double track clutch replaced it, and was, in the opinion of many, not as good as the single track, but was cheaper to make.   "

What makes the single track better ?

Pete .

[Ricks]

Pete, they engage smoother and are quieter.

[pd]

That begs the question 'why?'

Are the guides / tracks a different angle or radius ? I see they are heavier / thicker on the single track .
Are the throw-out weights different weight  , totally ?
Is the sliding member of the driven pulley a different configuration ? I can't tell from the manual .

Pete .

[Ricks]

That begs the question 'why?'

Are the guides / tracks a different angle or radius ? I see they are heavier / thicker on the single track .
Are the throw-out weights different weight  , totally ?
Is the sliding member of the driven pulley a different configuration ? I can't tell from the manual .

Pete .

I think it is because the weight shaft and the weights can rotate independently.  Less friction when they move up and down the track and against the moveable pulley.

[pd]

Am I mistaken , thinking that the single track clutch has four ( 4 ) governors / weights ?

 Not sure I'd go along with the less friction part .
Seems to me that the independent single track weights would have twice as much opportunity to add friction being as the weights could touch the tracks from either side , not to mention double ( or there about ) contact surface of the shaft to the track .
And , theoretically , the weights should be moving at the same rate / time if they and the tracks are identical .
 I don't know how the single and double track governors compare for total contact surface to the sliding member of the driven pulley .

Maybe the heavier / thicker single track governor track being wider provides a smoother transition of weight / governor and the 'fingers' , having more mass , absorb more vibration ( = sound ) .

Pete .

[Ricks]

The single track has 2 weights that look like barbells.  The reason for less friction, as I see it, is the center bar rotates free of the weights, so they roll independently.  With the twin track clutch, the weights are solid, and can bind up between the two tracks. 

But, I may be wrong!  lol

[pd]

2 weights does change things considerably ...

That would half the amount of friction and noise I imagined with 4 weights .

I have to wonder how much weight difference , if any , between the single and double track governors / weights .

I'd like to have a single track in hand for comparison to my double track .

Pete .

[oil-lamp]

Ok now a picture of you flying bye.

[dw1973]

Looks good Rick.  Glad to hear its up and running.   Dave