I've been allowed to play this weekend and I was hoping to do a lot more. It's not just about making the parts, it's trying to do it in an affordable way. Sadly this is all I have managed.
Using John's pivot bolt supplied it looks to be about 1mm longer on it's thick section that the bolt in the drawings. That change should make it a little snugger fitting once I make them. The internal sleeve could be notched or unnotched, I don't think it makes much difference other than price to make.
So we have a deployed picture and stored position picture mocked up. I think it will work.
email (option): pes.sales@btconnect.com
A little more progress on this project. It's been a fight all the way with parts not matching drawings and parts not matching parts.
Not far from completion, but I've been pulled away to work on other jobs. The spring still needs to be drawn up for manufactures to quote on.
Without the notch, the stand would work without the spring.
Testing the fit.
email (option): pes.sales@btconnect.com
Whilst checking over the parts this morning I decided I really should mock this up on a frame to prove the Tech section numbers work. They don't! A small adjustment will solve the problem of the knuckle eating the frame. Even then I don't feel that the deployed stand is far enough forward to be stable. The funny thing is, in it's stored position it would lift 10 degrees or more past the clip. This has me thinking it could go forward by 10 degrees and still keep it's range of movement as in the drawing?
Has anyone got any thoughts on this?
email (option): pes.sales@btconnect.com
Mark would swiveling the clamp round alter the angle? Here's how mine is set up.
I see you have a same period rear frame as mine! No foot rest lugs and the early field stand lug (1940) Ron
email (option): ronpier@talk21.com
Nothing really stable about these stands unless you're on soft ground, or you shut the engine down and park it in gear. If it's parked on a hard surface with the engine ticking over, it's liable to roll forward or back and fall over. DAMHIK:persevere: as old Hans would have said.
It's why I went to great lengths with the little jiffy stand I fitted. Ron
email (option): ronpier@talk21.com
A little more angle would be good...Unlike Ron I like using the field stand and use it all the time on my M20s, particularly when the bike is fully loaded with camping gear etc. Then it is nearly impossible to get onto the rear stand and if you do manage, it will ultimately damage the stand/pivots etc. anyway..The bike does need to be left in gear as Ron notes....
If the bike is on softer ground the cleverness of the design becomes apparent...The high mounting point means the weight of the bike is primarily through the wheels and not the foot of the stand...I've been at a couple of events where I've just parked up and then watched the owners of more modern bikes help each other find bits of wood, pieces of stone etc. to put under their side stands...Ian
email (option): ian@wright52.plus.com
This is the 10 degree shift that I think will help stop your bikes falling of the stand.
email (option): pes.sales@btconnect.com
Yes Mark the long field stand is under the frame rail (see official drawing) The short stand is above.
I've just taken a couple of pix of my original, to show the angle I have it at and the max movement forward. Total length of the pole to the end of the point is 25". Ron
email (option): ronpier@talk21.com
A Box of bits about to go for heat treatment.
email (option): pes.sales@btconnect.com
The stand's not actually horizontal but here's a pic of the the 'short' one showing the full disc...I've got a NOS field stand clip I can lend you as a pattern...Contact me off forum with your postal details if you want to borrow it..There's also a mounting plate for the clip which is then attached to the frame. The purpose of that is to 'tilt' the clip to the right angle to align it with the leg of the stand when it is raised..Ian
email (option): ian@wright52.plus.com
I just measured my stand again from the center of the pivot bolt to the point = 23 3/4" which according to my calculations is 1/8" longer than the drawing in the technical section. The stand was on the bike when I acquired it 33 years ago, so I'm quite sure it's not a repro. Ron
email (option): ronpier@talk21.com
Thanks to Ian a spring clip turned up in the post this morning.
It looks like it was originally hand bent, so I guess everyone will be unique.
Art work isn't my strong point, but this is about as good as I can get. The main dimensions are close so it should hold the stand in the same place.
The next problem will be getting a spring maker to reproduce it.
email (option): pes.sales@btconnect.com
Hi Mark,
A couple of photos of my knuckle with part number, and the angle on the sides. Hope this can help?
Dave
email (option): jeepfinger@blueyonder.co.uk