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by john.whiting
Thu May 21, 2020 1:39 am
Forum: Four stroke
Topic: Square four mk1 frame
Replies: 11
Views: 428

Re: Square four mk1 frame

Allowing rods to whack against the edge of the case doesnt help either,and any marks on the rod should be carefully removed before a crack starts......If your rods test out as sound ,might be worth having them shot peened for a bit of cheap insurance.......I might add ,steel rods also break in servi...
by john.whiting
Sat May 16, 2020 11:53 am
Forum: Main Chat Forum
Topic: Building up a shaft
Replies: 62
Views: 2389

Re: Building up a shaft

The tool chips from stopping in the cut ....a relief is needed so the tool tip is not overloaded.....A clapper box reduces wear from drag ,not significant on a small volume of metal removal.........Ive also noticed that Chinese HSS is not much good ,compared to the old time favourites like Poldi Sta...
by john.whiting
Tue May 12, 2020 4:51 am
Forum: Four stroke
Topic: Square 4 MKI - more troubles
Replies: 27
Views: 808

Re: Square 4 MKI - more troubles

When I bought my first Sq4,I had no car ,and no licence (wasnt old enough).....and it conked out after about 15 miles on the way home .....I went to remove the fuel pipe ,it was a sort of braided wire stuff,anyway ,soon as I touched a spanner to the nut,the pipe lining broke apart ,and petrol went e...
by john.whiting
Tue May 12, 2020 4:41 am
Forum: Main Chat Forum
Topic: Building up a shaft
Replies: 62
Views: 2389

Re: Building up a shaft

Not so ,Nev ,there is a considerable demand for small workshop machines like the Douglas and the Hercus lathes.,and small milling machines too.......The big stuff is whats hard to shift......the Indians dont buy manual machines anymore either ,all CNC suitable for retrofit.
by john.whiting
Tue May 12, 2020 4:37 am
Forum: Ariel Talk
Topic: Ariel Arrow clutch plate recorking
Replies: 5
Views: 133

Re: Ariel Arrow clutch plate recorking

The most unusual place Ive seen cork clutch linings was replacement plates for a Cat 12 grader .The grader clutch can be slipped under power if needed,without ill effect...Its oil flooded ,having the scavenge oil from the motor discharged inside the clutch...The cork plates lasted just as well as th...
by john.whiting
Tue May 12, 2020 4:31 am
Forum: Ariel Talk
Topic: Ariel Arrow clutch plate recorking
Replies: 5
Views: 133

Re: Ariel Arrow clutch plate recorking

The later AMC clutches used thin neoprene glued on......and I also believe the custom plates developed to stop clutch slip and drag in Indian 4s ,also use the same material.....The original fours ,Indian ,Henderson and Ace all used plain steel plates ,notorious for slip ...But also immune to wear ,i...
by john.whiting
Mon May 11, 2020 12:03 am
Forum: Ariel Talk
Topic: oil cap , what year ?
Replies: 21
Views: 722

Re: oil cap , what year ?

So the story goes ,Castrol supplied the oil tank caps free to makers ,so their oil would be used ....Its also claimed tyres and chains were supplied free to manufactureres during the depression so that new owners might stay with the same brand.
by john.whiting
Sun May 10, 2020 11:54 pm
Forum: Four stroke
Topic: VH 500, 56 Cylinder Head
Replies: 4
Views: 162

Re: VH 500, 56 Cylinder Head

Witness mark from a jointing plane in the pressure diecasting mould set......Yes ,these heads are diecast just like a Matchbox toy,but hopefully out of better metal.
by john.whiting
Tue May 05, 2020 10:56 am
Forum: Four stroke
Topic: Alternative Chassis Parts for 52 Rigid 350
Replies: 15
Views: 797

Re: Alternative Chassis Parts for 52 Rigid 350

if you intend to use the bike much ,be careful of how you mount thin alloy mudguards......Id look at how Matchless mounted these kind of guards on the CS models........I say this from experience .....normal stay bolts pulled thru a front ally guard ,guard went round with wheel ......how I survived t...
by john.whiting
Tue May 05, 2020 10:51 am
Forum: Four stroke
Topic: Alternative Chassis Parts for 52 Rigid 350
Replies: 15
Views: 797

Re: Alternative Chassis Parts for 52 Rigid 350

Assuming you dont have anything in the shed to use,I would suggest the new Indian half hub Royal Enfield wheels ....especially since the huge surge seen in price of any kind of classic english bike parts for the "artform special market".

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