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by john.whiting
Thu Feb 28, 2013 10:40 am
Forum: Four stroke
Topic: petrol additive
Replies: 18
Views: 2591

The vintage car clubs in England paid for lab testing on additives,only four worked,all marketed by major oil co s.The results with brand names were on their website at one time.Regards John.
by john.whiting
Thu Feb 28, 2013 10:22 am
Forum: Ariel Talk
Topic: Girder help with ID and dimensions please
Replies: 30
Views: 3281

I have had quite a bit to do with Indian stuff,as a bulk user of Indian made Perkins spares,an as an Importer of what were called Listeroid engines.At one time Repco owned a half share in the Indian Perkins factory.The factory was set up by Perkins in England,with obsolete machinery from other Perki...
by john.whiting
Wed Feb 27, 2013 9:59 am
Forum: Four stroke
Topic: petrol additive
Replies: 18
Views: 2591

I dont worry about singles or iron head twins,but alloy heads are a costly item to insert,so I think if I had a Sq4 ,I would use a valve saver of some sort.Regards John.
by john.whiting
Tue Feb 26, 2013 12:10 pm
Forum: Ariel Talk
Topic: Small twinlobe cam
Replies: 26
Views: 3484

I reclaimed Panther followers by silver soldering on pads melted off Speed Twin followers.I bought new followers with rusted shafts for $5 pr at a swap,and simply melted the stellite pads off.Excessive weld as the sample shown would seriously affect the steel in the rest of the unit,strength wise.Th...
by john.whiting
Tue Feb 26, 2013 11:56 am
Forum: Ariel Talk
Topic: Girder help with ID and dimensions please
Replies: 30
Views: 3281

If you wanted to make your own,I would suggest BSA type from the mid thirties,straight tube and most of the other fittings are of folded steel sheet.Webbs would be the last type I tried to make,and one specialist in P/L asks 2000 plus for a set of replica Velo forks.I personally would fit a set of l...
by john.whiting
Tue Feb 26, 2013 11:43 am
Forum: Main Chat Forum
Topic: Lucas mag nut thread...
Replies: 5
Views: 917

3/8 BSF probably.Later mags are.Regards John.
by john.whiting
Mon Feb 25, 2013 10:59 am
Forum: Four stroke
Topic: Telescopic fork problem solved
Replies: 5
Views: 1255

People who straighten modern forks for insurance co s,use a mandrel split at an angle along the long axis,and on a threaded bar,so that the whole thing can be expanded as the dent is raised gradually,by tightening the halves.Surprisingly,the device is called a "Denteraser".I know a fellow ...
by john.whiting
Sat Feb 23, 2013 11:09 am
Forum: Four stroke
Topic: M/cycle Sport mag. January 1964 and other engine combos
Replies: 3
Views: 632

Making a barrel is not hard,but you need different cam followers,which is hard(or expensive).Hence the lower part of the sidevalve barrel,which supplies all this ready made.Ariel actually used this idea in the early thirties,to rationalise production.Thru studs generally require plugging and redrill...
by john.whiting
Fri Feb 22, 2013 11:05 am
Forum: Four stroke
Topic: petrol additive
Replies: 18
Views: 2591

I have heard of exhaust problems in singles,but it might be poor quality replacement valves.If you keep an eye on valve clearances,you know straight away if something is happening.In vintage cars I know of valve burnout.Its particularly likely in 60s and 70s Holdens and Falcons,but also happens in o...
by john.whiting
Fri Feb 22, 2013 10:48 am
Forum: Four stroke
Topic: M/cycle Sport mag. January 1964 and other engine combos
Replies: 3
Views: 632

Making a 600 is quite simple.All you need is a SV motor,cut off the valve part and the upper fins,but leave the tappet chamber.Turn the top part of the barrel round,and install a made up sleeve with fins on.Fit a head thats suitable for thru studs,from what you have in your box of bits,and match up ...

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