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by john.whiting
Fri Sep 21, 2018 7:52 am
Forum: Main Chat Forum
Topic: Following the Cannonball on Instagram
Replies: 17
Views: 736

Re: Following the Cannonball on Instagram

Some are rich,some arent...............there are two Triumphs and two Nortons still in the first 11......and another Norton 16H of 1915 still in the first 50 odd.
by john.whiting
Fri Sep 21, 2018 5:41 am
Forum: Main Chat Forum
Topic: Following the Cannonball on Instagram
Replies: 17
Views: 736

Re: Following the Cannonball on Instagram

A lone 16H still in the top ten.....
by john.whiting
Fri Sep 21, 2018 3:46 am
Forum: Four stroke
Topic: 1938 SQUARE FOUR VALVE GUIDES
Replies: 9
Views: 208

Re: 1938 SQUARE FOUR VALVE GUIDES

I have found that many motorcycle guides are made to standard dimensions,and special /replica guides arent needed.....hence in most of my efforts you will find Perkins guides...mainly because they are very cheap..like a few dollars for a pack of 10,and made to exact dimensions........as Nev mentions...
by john.whiting
Wed Sep 19, 2018 1:27 am
Forum: Four stroke
Topic: 1938 SQUARE FOUR VALVE GUIDES
Replies: 9
Views: 208

Re: 1938 SQUARE FOUR VALVE GUIDES

heres a tip for fitting frozen bits......put your installing drift in the freezer with the part on it...........fitting small parts into a hot head or case,you only have a few seconds ,before the part is hot too .........so drive it in quick as soon as it touches........
by john.whiting
Wed Sep 19, 2018 1:20 am
Forum: Four stroke
Topic: 1938 SQUARE FOUR VALVE GUIDES
Replies: 9
Views: 208

Re: 1938 SQUARE FOUR VALVE GUIDES

If the guides are too large,I doubt the head would crack,but the guides will close in on the ID just about all the interference fit,and may well have to be reamed to fit new valves.
by john.whiting
Wed Sep 19, 2018 1:16 am
Forum: Four stroke
Topic: WNG Bad Engine shock absorber sprocket
Replies: 25
Views: 441

Re: WNG Bad Engine shock absorber sprocket

Dont get the sprockets out of line,thats a lot more important than a few mms on the cam engagement.......If your sprockets are wearing on one side ,then the chain is out of line,if the sprockets dont touch the chain either side of the teeth,that is ideal......I personally think the cam should run up...
by john.whiting
Wed Sep 19, 2018 1:06 am
Forum: Main Chat Forum
Topic: Mini Lathe
Replies: 45
Views: 1014

Re: Mini Lathe

Even Like that ,the slide isnt a write off.........you can cut off the top,and silver solder on two new sides,thereby saving all the work of making the top.........In fact ,i salvage really badly worn slides just like that.......because then you can clean up the jet block guide,and have the slide un...
by john.whiting
Mon Sep 17, 2018 3:41 am
Forum: Four stroke
Topic: 1938 ariel square four
Replies: 2
Views: 98

Re: 1938 ariel square four

The head is castiron,the guides are castiron.....same expansion rate.......therefore heating a waste of time........if your mainbearings are solid bronze,then case heating wont have much effect.....if they are steelback white metal,then they will fall out with boiling water temp...Never heat beyond ...
by john.whiting
Mon Sep 17, 2018 3:04 am
Forum: Main Chat Forum
Topic: Mini Lathe
Replies: 45
Views: 1014

Re: Mini Lathe

For those who live on the NSW north coast,Expressway Spares are still trading,and they still sell the "bucket o bolts" deal.....One of the good points of Cat bolts is the heads are extra thick,and you can machine the head to lose the markings ,and make the result look like a stud and nut w...
by john.whiting
Mon Sep 17, 2018 2:55 am
Forum: Main Chat Forum
Topic: Mini Lathe
Replies: 45
Views: 1014

Re: Mini Lathe

With a bit of fiddling,and the necessary experience,it is possible to make a hardened crankpin and rod race on a South bend/Hercus 9" lathe.All the classic Indians had bearing races and shafts made from case hardened low carbon steel.......not as long lasting as a R&M bigend to be sure,but ...

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