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by john.whiting
Fri Sep 09, 2011 12:28 pm
Forum: Four stroke
Topic: Help needed on '49 500VH rebuild
Replies: 6
Views: 1385

Some years ago one of the mags published the factory drawings for the valve gear. The lifters should have a 1/2 in radius on the cam contact . If your wear is more than say 40 thou then the case hardening is worn thru.This can easily be tested with a small file. Regards John.
by john.whiting
Thu Sep 08, 2011 11:36 am
Forum: Four stroke
Topic: Kickstart stop peg - BA gearbox
Replies: 10
Views: 2559

I might mention that if you get the camshaft timing out, often the box will change OK, but with only partial engagement of either first or fourth, causing breakdown of the clutch teeth on the gear pair ,and eventually resulting in jumping out of gear. Repair means replacing both gears.Burman BA and ...
by john.whiting
Thu Sep 08, 2011 11:18 am
Forum: Ariel Talk
Topic: Fitting chain guards to rigid VH
Replies: 7
Views: 1210

Keith, my 1950 VG has a tab welded to the tubular mudgard stay, horizontal, and angled back slightly. No brake stop that I can see. Does the 1950 VH have the lower chaingard ?I once had a very original VH, that had it.I got it free because the carby and mag were melted.,but it must have been a 1951,...
by john.whiting
Sun Sep 04, 2011 1:11 pm
Forum: Four stroke
Topic: Noise
Replies: 10
Views: 1945

Maybe the driveside mainshaft is loose in the flywheel? Or loose splines in the cush drive ?Regards John.
by john.whiting
Sun Sep 04, 2011 10:31 am
Forum: Four stroke
Topic: Help needed on '49 500VH rebuild
Replies: 6
Views: 1385

Scott, things like the installed height and seat pressure are for jap bikes, all this will vary wildly depending how pocketed your valve seats are and the length of your valves. The thing you need to check is the state of your cam and lifters,considerable wear is not uncommon.Good replacements are a...
by john.whiting
Sun Sep 04, 2011 10:09 am
Forum: Four stroke
Topic: Kickstart stop peg - BA gearbox
Replies: 10
Views: 2559

I have never seen one broken before, it probably takes sixty years.Drive the remains out from the outside of the inner case[ as there is a step ] towards the interior of the case.I wouldnt worry about it breaking again, but put the rubber on ,if its available. Getting the kickstart spring to behave ...
by john.whiting
Sat Sep 03, 2011 11:23 am
Forum: Four stroke
Topic: Kickstart stop peg - BA gearbox
Replies: 10
Views: 2559

I ve just looked at the parts drawing[Ariel by C W Waller, 6th ed. p148. item no 8.] and it shows a rubber bush fitted to the peg. Ive never seen this bush but it probably absorbed some of the shock if the lever was allowed to return freely under spring pressure. Ive seen Norton gearboxes with the k...
by john.whiting
Sat Sep 03, 2011 10:22 am
Forum: Four stroke
Topic: Kickstart stop peg - BA gearbox
Replies: 10
Views: 2559

For those looking on, the trick is to remove the gearlever, then push on the change mech, so that it stays with the inner case. Then you wont need xray vision to see if the foot change quadrant is correctly meshed with the timing mark on the cam shaft, as you replace the cover. The stop peg fits in ...
by john.whiting
Fri Sep 02, 2011 12:56 pm
Forum: Four stroke
Topic: Which pistons are available for my ariel
Replies: 137
Views: 53589

I finally got around to checking out Harley piston prices. XLH 3 3/16 std to 60 over. US$ 115 with rings and pin. [thats for a pair]. Big end kit about $350[includes two new conrods.]Check out the V-Twin Mfg site. Would you want to buy a kit to build a replica 1947 Ariel?You can buy one for a 47 knu...
by john.whiting
Fri Aug 05, 2011 1:02 pm
Forum: Ariel Talk
Topic: Wash Carefully
Replies: 6
Views: 1686

I hope you havent filled your gearbox up with water.Hard to get out if its pre 52.The gear box doesnt get hot enough to evaporate water, and will rust up solid.John.

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