1937/8 Gearbox and footchange | Scotts Owners Club

This topic has 7 replies, 4 voices, and was last updated 15 years, 5 months ago by Deleted User.

Viewing 8 posts - 1 through 8 (of 8 total)

Author

Posts
22nd March 2011 at 8:04 pm #2755

lewis onions
Participant

Prompted by the fine weather I have upped the pace of work on my current project in the hope of completing it within the year and return of the dim Autumn days(some chance on past performance!). This query is related to Maurice’s concening his 1934 gear selection but I have posted separately rather than follow his thread.

The gearbox on this bike (1937/8 model according to the frame and engine numbers) appears to be vintage and came with a bolted on footchange mechanism which is nothing like the Velocette type used by Scott. I intend to repalce this with a Scott-type footchange and have assembled most of the parts including a plate from the spares scheme. I have unfortunately hit a brick wall when it comes to fitting it up. Can anyone help me with the folowing enquiries?

1. the gearbox has no external indented plate and the selector arm is a single lever so rather than a cranked one. There are no screw holes where the plate might one have been so I assume there never was one. Is this how the original bolt-on footchange used 1936-8 was fitted or do I neeed to change the selector arm and add the plate, ball-bearing and spring ?

2. All of the pictures I have of the bolt-on footchange appear to have two plates – a second plate (roughly kidney-shaped)with the kick-start stop bolted over the plate which holds the positive stop mechanism. Does anyone have the dimensions of this plate – a diagram or some close-up photographs ?

Any comments, help or advice readily received. Thanks in advance.

22nd March 2011 at 9:08 pm #9195

Anonymous
Inactive

Hi Lewis,

I’ll reply based on bikes I’ve got:

1. My one bike with the bolt on Scott foot change has an indent plate bolted to the gearbox and the appropriate bell crank to accept the spring/ball. If you have no gearbox case with the indent plate/holes then I’ve got 2 or 3 and I’d do you a straight swap if you wish.

2. There are 2 plates and one is kidney shaped as you say. I’ve got no good photos, the bike is buried under a few others and the kickstart side is to the wall. I’m afraid I’m going away in a few hours until the end of next week. If no-one else posts up in the meantime I can dig the bike out and do some photos and sketches. I’ll email you a couple of general pictures, I don’t have time to upload and link here right now.

My one point would be that I find the spring loaded Scott gearchange vague to say the least. I much prefer hand change and will be converting my foot change bike to hand change in the next month or two. At least with hand change when it says you are in low then you really are!

Regards,
Richard

23rd March 2011 at 7:51 am #9196

chris wastell
Participant

Interesting that you find the Scott gearchange vague. Mine has always been quite positive although a bit heavy (1937ish). Last year I hade to remove the gearbox for a primary drive fault. When I set it all back up again, for some reason the gear change is as sweet as a Honda! One of thse happy accidents I suppose :). The point is that it’s worth having a fiddle. I think I minutely altered the endfloat on the selector shaft.

23rd March 2011 at 11:22 am #9197

Deleted User
Participant

Lewis,

Is this the kidney shaped plate you are reffering to?

James

23rd March 2011 at 1:06 pm #9198

lewis onions
Participant

Hello James – that is the bracket I have from the spares scheme (and I have another two slightly different in stock which appear to fit different gearboxes – maybe Velocette?).

I think that there is another plate which bolts in front of this one, I assume to add strength which is more of a kidney shape.

Thanks for your help.

23rd March 2011 at 3:19 pm #9199

Deleted User
Participant

Lewis,

It must be this one then!

James

23rd March 2011 at 6:16 pm #9200

lewis onions
Participant

Superb James !

That certainly looks like the one – I assume that the three smaller holes across the top correspond with the same in the other bracket and they appear to be threaded ? One of the larger holes corresponds with the oil overflow drain plug in the gearbox perhaps ?

Could I ask a very big favour and ask you to trace around the bracket and send me the tracing ? My address is in the front of Yowl. Thanks for the help again!

23rd March 2011 at 6:40 pm #9201

Deleted User
Participant

Hi Lewis,

Not quite, this is how is goes together.

Kickstart bump stop is a later addition plus you need a small detent on the bottom for the kickstart boss.

And the selector plate;

James
Author

Posts

Viewing 8 posts - 1 through 8 (of 8 total)

The forum ‘General Scott topics’ is closed to new topics and replies.