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by ralph thetford
Sat Sep 21, 2019 5:56 pm
Forum: Four stroke
Topic: Lucas MN1E Magdyno on my 1938 square four
Replies: 3
Views: 255

Re: Lucas MN1E Magdyno on my 1938 square four

Thanks John, I have slighty filed down the screw and it now clears OK ---Regards Ralph
by ralph thetford
Sat Sep 21, 2019 5:54 pm
Forum: Four stroke
Topic: 1938 square foue Magneto sprocket
Replies: 2
Views: 275

1938 square foue Magneto sprocket

I have just set the points on the Magneto but on nipping up the nut on the sprocket it moves the Magneto shaft slightly and of course moves the points out of setting---I have had about five goes at this and every time the shaft move slightly-----Does anyone have a safe and sure way of holding the Ma...
by ralph thetford
Fri Sep 20, 2019 7:50 pm
Forum: Four stroke
Topic: Lucas MN1E Magdyno on my 1938 square four
Replies: 3
Views: 255

Lucas MN1E Magdyno on my 1938 square four

I was setting up the points on the MN1E magneto on my 1938 square four when I realised that instead of the fibre heel touching the cam ring to open the points, the points were being opened by the head of the screw holding the leaf spring to the fibre heel----(ie the screw has around head and is catc...
by ralph thetford
Sun Aug 18, 2019 8:23 pm
Forum: Four stroke
Topic: 1938 ARIEL SQUARE FOUR REAR BRAKE PEDAL LEVER
Replies: 4
Views: 1123

Re: 1938 ARIEL SQUARE FOUR REAR BRAKE PEDAL LEVER

Thanks all for your help, managed to get hold of a spring, its fitted and works well.

Regards Ralph
by ralph thetford
Tue Aug 13, 2019 7:57 pm
Forum: Four stroke
Topic: 1938 ARIEL SQUARE FOUR REAR BRAKE PEDAL LEVER
Replies: 4
Views: 1123

1938 ARIEL SQUARE FOUR REAR BRAKE PEDAL LEVER

I have just fitted the rear brake foot brake pedal and rod, the brakes go 'on' fine but the foot pedal does not come fully back to the stop pin and is very floppy and it is not fully releasing the brakes. It looks like the only thing helping to return the pedal is the brake shoe springs with no othe...
by ralph thetford
Thu Aug 01, 2019 6:57 pm
Forum: Four stroke
Topic: 1938 ARIEL SQUARE FOUR CLUTCH PUSH ROD
Replies: 7
Views: 738

Re: 1938 ARIEL SQUARE FOUR CLUTCH PUSH ROD

Thanks for your reply Mick, this was my dad's bike who ran it for many years with a side car and still with the original BA gearbox and clutch--Yes the ball is in place and is still too short but the 13-7/16" push rod seems about right.

Regards Ralph
by ralph thetford
Thu Aug 01, 2019 4:03 pm
Forum: Four stroke
Topic: 1938 ARIEL SQUARE FOUR CLUTCH PUSH ROD
Replies: 7
Views: 738

Re: 1938 ARIEL SQUARE FOUR CLUTCH PUSH ROD

Hi Paul, I was a little confused as the rust damaged push rod I took out my bike is 13-7/16" long but about looks right for the BA gearbox and clutch----so I ordered a new rod from Dragonfly (ref-3430-36) and it's only 12-3/4" long and realised it is too short---have you any ideas? Regards...
by ralph thetford
Wed Jul 31, 2019 7:34 pm
Forum: Four stroke
Topic: 1938 ARIEL SQUARE FOUR CLUTCH PUSH ROD
Replies: 7
Views: 738

Re: 1938 ARIEL SQUARE FOUR CLUTCH PUSH ROD

Thanks for your help Dave
by ralph thetford
Wed Jul 31, 2019 6:44 pm
Forum: Four stroke
Topic: 1938 ARIEL SQUARE FOUR CLUTCH PUSH ROD
Replies: 7
Views: 738

1938 ARIEL SQUARE FOUR CLUTCH PUSH ROD

Could soomeone help with the following--- 1) what should be the length of the clutch push-rod on my 1938 square four as the one I have is very damaged 2) Ideally how much should the push-rod move during it's operation. ie the amount the the operating plunger (3050-35) moves in and out Regards Ralph ...
by ralph thetford
Wed Jul 17, 2019 7:50 pm
Forum: Four stroke
Topic: 1938 SQUARE FOUR ENGINE SHOCK ABSORBER
Replies: 2
Views: 324

Re: 1938 SQUARE FOUR ENGINE SHOCK ABSORBER

Hi Paul, thanks again for yor support----My shock absorber has 3-lobes---But after about a dozen more attempts I finally managed to get the splines lined in and got the nut fully nipped up.

Regards Ralph

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