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by john.whiting
Sat Nov 30, 2019 11:36 pm
Forum: Four stroke
Topic: stainless front wheel spindle for alloy FWH-loose in fork!
Replies: 13
Views: 288

Re: stainless front wheel spindle for alloy FWH-loose in fork!

If you were to combine the one sided dampers some here fit, and an axle loose in one slider,said axle made of 304 stainless (very low notch toughness).....I could guarantee your head will come in close proximity to the roadway when the spindle breaks ,and the front wheel comes adrift.
by john.whiting
Sat Nov 30, 2019 8:40 pm
Forum: Member's Bikes
Topic: My "Trials " Bike
Replies: 17
Views: 476

Re: My "Trials " Bike

Starting on full advance will be an interesting experience......I remember as a child I always started my Ariel with the pedal in the gap behind the toes,when it kicked back ,it didnt hurt so much......I wasnt allowed to wear my shoes riding motorbikes,they were for special occasions......Thats prob...
by john.whiting
Sat Nov 30, 2019 8:32 pm
Forum: Four stroke
Topic: stainless front wheel spindle for alloy FWH-loose in fork!
Replies: 13
Views: 288

Re: stainless front wheel spindle for alloy FWH-loose in fork!

There is a simple efficient way of increasing a diameter---called "jumping up"-----but apparently ,the manufacturers thought 99% of his (or her?) customers were a bunch of tossers with old bikes who wouldnt know any better.......Fortunately Ariel forks are steel,the same defect with alloy ...
by john.whiting
Sat Nov 30, 2019 4:58 am
Forum: Member's Bikes
Topic: My "Trials " Bike
Replies: 17
Views: 476

Re: My "Trials " Bike

I also see the bike has a Lucas SR mag,the common industrial one ,so it has no advance and retard........there is a SR with manual advance ,but far as I know only used on late Manx Nortons,and possibly somewhat expensive....And also ,get the front guard fixed before you have a crash,or just take it ...
by john.whiting
Sat Nov 30, 2019 2:03 am
Forum: Main Chat Forum
Topic: Another trials Colt
Replies: 10
Views: 416

Re: Another trials Colt

The kickstart is somewhat unusual....nothing like any other box.....there is a cranked axle that carries a sprag meshing with first layshaft gear external teeth...Not something you will knock up in the shed.....or maybe you will with a lathe and a milling attachment .
by john.whiting
Sat Nov 30, 2019 1:54 am
Forum: Four stroke
Topic: stainless front wheel spindle for alloy FWH-loose in fork!
Replies: 13
Views: 288

Re: stainless front wheel spindle for alloy FWH-loose in fork!

They used ground finish bar I suspect--ground bar is supplied to cold finish less the grinding allowance-- hence 001us.......if you think about it,to produce a 005 os on the axle means you must buy the next size up,and machine it down........to get a delivery of 005 os from the suppliers ,you would ...
by john.whiting
Fri Nov 29, 2019 11:21 pm
Forum: Member's Bikes
Topic: My "Trials " Bike
Replies: 17
Views: 476

Re: My "Trials " Bike

Bit of clarification.....the box is the Burman made AMC B52,not the "AMC" box as commonly termed,which is still being made in the US.....the so called "AMC" box is the London made one used from 1956 in Nortons and Matchless /AJS heavyweights.
by john.whiting
Fri Nov 29, 2019 10:57 pm
Forum: Member's Bikes
Topic: My "Trials " Bike
Replies: 17
Views: 476

Re: My "Trials " Bike

Before you ride it ,make the front guard safe ......or you will be kissing the bitumen.......seems a very well engineered special ,and the AMC gearbox is almost certain to have an AMC clutch.........if you quote the code from the box ,someone will tell you what its off ,and year of manufacture.......
by john.whiting
Fri Nov 29, 2019 10:44 pm
Forum: For sale/wanted - Parts
Topic: Triumph or Norton rear hub.
Replies: 6
Views: 264

Re: Triumph or Norton rear hub.

certainly not WD 16H ,as they have three holes in the offside flange for a socket spanner to tighten the nuts(3)......nor any norton Im familiar with.( and Ive got a few)
by john.whiting
Sun Nov 17, 2019 9:49 pm
Forum: Main Chat Forum
Topic: Chain Tension
Replies: 7
Views: 322

Re: Chain Tension

Primary chains often wear in spots.....so be sure to check for excessive tightness for several complete rotations of the chain.....Ive found the worst wear situation is if the chain is a multiple of the engine sprocket.

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