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by paul.wirdnam
Sun Aug 25, 2019 9:03 am
Forum: Four stroke
Topic: 3rd gear problems with BA gearbox
Replies: 20
Views: 2273

Re: 3rd gear problems with BA gearbox

Did you fit new springs in the gear selector? My BA used to jump out of 2nd when changing down, new springs cured that. I've been helping a friend with a similar problem on his BA box. Stripped it down and really couldn't find anything wrong with it...except that the gear selector pawl spring was s...
by paul.wirdnam
Fri Aug 23, 2019 7:27 am
Forum: Member's Bikes
Topic: My 4G Restoration Blog
Replies: 123
Views: 15163

Re: My 4G Restoration Blog

The front centre bracket which you have made so well is usually riveted to the mudguard, as are various other brackets. I cheat here, and get Clay Jones at ACME stainless to turn me up some 1/4 cycle bolts with a head the same as the rivet head. Easy to fit, possible to remove should you need to an...
by paul.wirdnam
Sat Aug 17, 2019 7:07 am
Forum: Four stroke
Topic: Burman gearbox cover
Replies: 9
Views: 606

Re: Burman gearbox cover

Nick, are you doing this with the box in the bike...or on the bench? Nick, the reason I asked is because I've done this many times on the bench with the gearbox being held in the vice by the mainshaft clutch bearing surface with open box facing upwards. In this situation, it just a matter of assemb...
by paul.wirdnam
Fri Aug 16, 2019 7:22 pm
Forum: Four stroke
Topic: Burman gearbox cover
Replies: 9
Views: 606

Re: Burman gearbox cover

Nick, are you doing this with the box in the bike...or on the bench?
by paul.wirdnam
Fri Aug 16, 2019 6:04 pm
Forum: Four stroke
Topic: My 46 SQ4 is finished - or so I thought
Replies: 13
Views: 1094

Re: My 46 SQ4 is finished - or so I thought

Hi John, Yep...3 too many cylinders without a doubt! We're in luck I think. I still have 2 new Viton seals that I used on the Sloper and I've just dug them out. They are 20 x 26 x 4...and having just measured the sprocket boss diameter (22.8mm) and the crankcase hole diameter (23.7mm), these look pe...
by paul.wirdnam
Fri Aug 16, 2019 2:47 pm
Forum: Four stroke
Topic: My 46 SQ4 is finished - or so I thought
Replies: 13
Views: 1094

Re: My 46 SQ4 is finished - or so I thought

John, A couple of photos from a crankcase that apparently has never been used....came from Healey works I think. The hole measures 0.935" When I restored my Sloper in 2012, I had a similar issue and didn't want to dismantle the engine etc. In the end, I resorted to carefully opening up the dama...
by paul.wirdnam
Fri Aug 09, 2019 9:21 am
Forum: Member's Bikes
Topic: The KH Project MK II
Replies: 29
Views: 4083

Re: The KH Project MK II

Looking good Paul. Over the past 3 months, and while my Red Hunter is off the road with a broken rear mudguard hinge, my '48 KG has really grown on me. And a mate has just bought a '51 KH. Both pictured below. That tyre looks great --- not a name I'm familiar with --- where did you buy it & cost...
by paul.wirdnam
Sat Jul 27, 2019 12:22 pm
Forum: For sale/wanted - Bikes
Topic: FOR SALE : 1928 model E
Replies: 17
Views: 2487

Re: FOR SALE : 1928 model E

I do find it strange that we're almost at the position where some models of SQ4s are selling at the same price as similar condition Black Ariels. Prices on the latter have risen over the last 24 months while prices for SQ4s have stagnated and, in some cases, fallen. Paul I can imagine, but I think ...
by paul.wirdnam
Fri Jul 26, 2019 10:58 am
Forum: Member's Bikes
Topic: My 4G Restoration Blog
Replies: 123
Views: 15163

Re: My 4G Restoration Blog

I've been battling with the mudguards from day one --- they have been the worst aspect of this restoration. Under layers of paint on the top, and some sort of bitumen underneath, they are not in a good shape. A MIG-welding friend has managed to salvage the rear one but having had both gently bead bl...
by paul.wirdnam
Thu Jul 25, 2019 9:19 pm
Forum: Member's Bikes
Topic: My 4G Restoration Blog
Replies: 123
Views: 15163

Re: My 4G Restoration Blog

paul.jameson wrote:Did you spray the wheelbuilding jig for practise first?

:lol: :lol: No, but it does look like it!

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