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51
British Bikes / Hot Start Problem
« Last post by Billington on June 28, 2025, 10:17:40 PM »
My 1932 BSA W32-6 500cc side valve will not start when the engine is hot. It will start when cold with just one kick and run beautifully, however if I stop the engine and attempt to restart it when it is hot it will not start.

I had this problem in 2017, which I solve by having the magneto rebuilt. I’ve done approximately 800 miles since the magneto was rebuilt by Tony Cooper (I believe he is now retired).

Could the magneto have failed again with such little use or should I look for other issues. I would be grateful to hear your kind advice and details about how to diagnose this and correct issue.
52
British Bikes / Re: Villiers XIIC 148cc doesn’t run anymore
« Last post by R on June 22, 2025, 11:29:27 PM »
So what was your magic trick to start it ?

When my trusty lawnmower 'fails to proceed', I find a teaspoon of fuel down the plughole
invariably brings it to life.

,and these people didnt appreciate speedway riding in their grounds.

Funny about that ?
Those were the days  ...
53
British Bikes / Re: Villiers XIIC 148cc doesn’t run anymore
« Last post by john.k on June 22, 2025, 06:38:51 AM »
I recall when we were kids ,a friend in the next street had one of these .........he couldnt get it going ,ever .......we used to go to his place get the bike going ,race around the streets on his fathers mower petrol until it ran out ..........there was a school and a church across from his house ,and these people didnt appreciate speedway riding in their grounds. ...........I had a terrific crash on it and tore the inside out of my knee.
54
British Bikes / Re: Troubleshooting a JAP Special
« Last post by john.k on June 22, 2025, 06:25:33 AM »
The exhaust seat has been well recut (several times) and pocketed ......not that it matters for road use ..........however it means that a new seating ring cant be fitted without major expense..........If your timing is extreme ,you need to be sure the valves wont collide ............Must say it seems strange to me that Burlen and others sell replica Amal carbs for astronomical sums ,when you can buy new carbs for 15 quid on ebay or temu.
55
American Bikes / Re: Crocker Graduate
« Last post by friday on June 16, 2025, 09:33:32 PM »
and
56
American Bikes / Crocker Graduate
« Last post by friday on June 16, 2025, 09:30:34 PM »
The best I can see is right click and open image in new Tab
or I upload as 30% resize!
57
British Bikes / Re: Ariel Arrow?
« Last post by ramwing7 on June 12, 2025, 06:11:52 PM »
Thanks folks.  This bike is proving to be full of "creativity".
A modern one is already on order. ;D
58
British Bikes / Re: Ariel Arrow?
« Last post by Vreagh on June 12, 2025, 10:39:21 AM »
Looks like someone's scratch built rectifier, good effort but easier nowadays to to buy a standard bridge rectifier. 
59
British Bikes / Re: Ariel Arrow?
« Last post by R on June 12, 2025, 01:22:07 AM »
Not only does it look like a rectifier, you can actually see the 4 individual diodes
that make up the diode bridge.

And potentially replace one if it goes bad.
Dunno about that R1 .....

https://cdn1.byjus.com/wp-content/uploads/2023/03/Bridge-Rectifier-1.png
60
British Bikes / Re: Ariel Arrow?
« Last post by L.A.B. on June 12, 2025, 12:34:32 AM »
Yes, it looks like a rectifier.
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