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by murray.mckenzie
Mon Aug 12, 2019 11:37 am
Forum: Four stroke
Topic: Removing the ringds from a VB piston
Replies: 13
Views: 4940

Re: Removing the ringds from a VB piston

A very late reply as I haven't been on the forum for a wee while and you probably have it sorted by now but this may be of help to someone in the future. I have played around with old stationary engines as well over time and saw this idea somewhere and having tried it with very stuck rings it does w...
by murray.mckenzie
Wed Feb 13, 2019 11:45 pm
Forum: Four stroke
Topic: Secondary chain size on 1937 VB
Replies: 5
Views: 1222

Re: Secondary chain size on 1937 VB

Hi Alan, No I hadn't looked at the parts list to be truthful, in fact I didn't know they were there till I went hunting. Thank you so much for pointing me in that direction. The rear wheel sprocket has 47T and is 1/4" wide and because it looked relatively new I had assumed the previous owner ha...
by murray.mckenzie
Wed Feb 13, 2019 10:31 am
Forum: Four stroke
Topic: Secondary chain size on 1937 VB
Replies: 5
Views: 1222

Secondary chain size on 1937 VB

I just received a new 19T secondary chain sprocket from Draganfly for my 1937 VB with a BA gearbox but it is much wider than my original 1/4" one that is currently fitted. In fact it is 9mm wide. My current sprocket is 1/4" wide and running a 520 chain - 5/8 pitch x 1/4" inner width c...
by murray.mckenzie
Thu Nov 01, 2018 10:26 am
Forum: Four stroke
Topic: BA gearbox grease
Replies: 0
Views: 481

BA gearbox grease

I was wondering if anyone knew what the correct volume of grease is that should be added to an empty gearbox? 1937 VB bike. I have been repairing my 3rd gear issues based on the excellent help offered earlier and am getting close to reassembly. Based on the likes of power tool gearboxes I would have...
by murray.mckenzie
Fri Oct 12, 2018 10:01 am
Forum: Four stroke
Topic: BA gearbox question
Replies: 9
Views: 1792

Re: BA gearbox question

He didn't go into a lot of detail as to exactly what happened apart from saying that a circlip had failed. He gave me the bronze selectors or what was left of them. They were totally chewed to bits. I note that the outer cover over the clutch has a scuff mark in it so I assume the whole mainshaft dr...
by murray.mckenzie
Fri Oct 12, 2018 5:08 am
Forum: Four stroke
Topic: BA gearbox question
Replies: 9
Views: 1792

BA gearbox question

I have just restored a 1937 VB and it is jumping out of 2nd & 3rd gear mostly on drive but occasionally on overrun. I have stripped it down and found the spring box was worn and not rotating the cam selector far enough for the detent to engage into the groove on the selector shaft. I have rebuil...
by murray.mckenzie
Sun Sep 30, 2018 11:04 pm
Forum: Four stroke
Topic: 1937 Ariel VB engine sprocket
Replies: 8
Views: 1634

Re: 1937 Ariel VB engine sprocket

Hi Guys, Thank you all for your most valuable help. I chased the auction above and was blown out of the water by a bid in the last 1 second, more than twice my bid. However I have since managed to track down and get a NOS 21 which is what you suggest John and makes a lot of sense based on yours and ...
by murray.mckenzie
Thu Sep 27, 2018 10:02 pm
Forum: Four stroke
Topic: 1937 Ariel VB engine sprocket
Replies: 8
Views: 1634

Re: 1937 Ariel VB engine sprocket

Thank you very much Steven. There was a note on the auction that they may not send to NZ so I have emailed them to see if they would reconsider.
by murray.mckenzie
Thu Sep 27, 2018 11:34 am
Forum: Four stroke
Topic: 1937 Ariel VB engine sprocket
Replies: 8
Views: 1634

1937 Ariel VB engine sprocket

Hi, I just joined the forum from Dunedin New Zealand. I have just got my VB on the road after a lengthly restoration. On the first run I thought the engine revs were a bit high as the speed got up and have discovered that the engine sprocket has 19 teeth instead of 23 teeth. I believe now it had a s...
by murray.mckenzie
Fri Aug 10, 2018 11:49 am
Forum: Four stroke
Topic: Vb 600 gearbox sprocket
Replies: 6
Views: 1175

Re: Vb 600 gearbox sprocket

Hi, I have only joined the forum and am in a very similar position to you Dave. I have just got a 1937 VB back on the road and the previous owner had a sidecar on it but it was split off prior to my purchasing it. I noticed on the first run I have done that the engine is turning over a bit quick and...

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