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Messages - BEVANC

Pages: [1] 2 3 ... 10
1
Pre War / Re: vapour lock
« on: 02 June, 2022, 02:14:11 »
That will be machined slots in the valve head - my Ariel has those too. Here's a picture of my barrel.

And my previous comment about spark plug position was bollocks - don't know what I was thinking ! Heres a picture of the head with some bluing on it when I was checking for flatness.

2
Pre War / Re: vapour lock
« on: 01 June, 2022, 20:23:59 »
An interesting difference in spark plug position compred to my 600 sv Ariel - my plug is directly above the piston.
 
You are lucky the gasket did not blow out - my Ariel has blown two gaskets over the years. I lapped the head  flat on a surface plate to try to prevent a repeat. Both the heads and the barrels do distort due to the heat.I may yet need to get the barrel face machined flat. A fellow Ariel VB owner has had his head & barrel machined and lapped together and is running without a gasket.

If you haven't already put the head back on, i'd suggest checking it for flatness on a surface plate or sheet of glass.

Initially, I had to tighten up the screw on my advance retard lever a lot to prevent it shifting as i ride - but it was my fault as i had sprayed CRC on the mechanism to inhibit corrosion, making it too free to turn. Took it apart, cleaned it and reassembled and its now ok.

As with your BSA, after a ride, the carb on my Ariel is far too hot to touch. Lack of clearance over the magdyno and from the carb mouth to the oil tank means that it would be impossible to add anything more than a very thin a tufnel spacer, but it never seems to cause any issue. Side valves do run really hot.

I hope your bike runs better once you getthe head back on. I must say, your initial descriptions made it sound like fuel starvation (e.g. blocked breather hole in the petrol cap; clogged fuel tap/filter etc..)

Cheers,
Bevan. 

3
Pre War / Re: Sloper rebuild
« on: 01 October, 2021, 20:42:39 »
Hi Mike,
Here's a photo of the dissembled tell-tale from my S29 Sloper.
Cheers,
Bevan

4
The Star and Garter / Re: Fibre washers
« on: 14 June, 2021, 10:38:40 »
I found that the fibre washers I bought from a plumbing shop here in N Z. were really hard and shiny. They did not seal well unless I sanded the shininess off them,  effectively roughing up the sealing surfaces up a bit. Cheers, Bevan.

5
Pre War / Re: Sloper S30-13 performance issues
« on: 15 May, 2021, 11:16:45 »
Hi Michel, my S29 runs fine with the timing set to points opening at tdc on full retard. This is what the owners manual recommends. I think that equates to 10.7 mm or 35 degrees before tdc if fully advanced. Cheers, Bevan.

6
Pre War / Re: Valve guides
« on: 12 March, 2021, 18:56:55 »
Gidday Mike, not sure about our Slopers, but I was advised by POC experts against using them in my Panther - they are renowned for seizing the exhaust valve unless the clearances are what most engineers would regard as worn out ! Cherts, Bevan.

7
Pre War / Re: 1930 S30 complete rebuild
« on: 01 March, 2021, 18:13:31 »
There's a very small limit on file size for attachments on this forum  so is hard to share stuff directly.
I have a file of useful Sloper info I can share with you if you want to email me: clarkb@mthutt.school.nz.
 Cheers Bevan

8
Pre War / Re: Carburettor for BSA H30-10
« on: 22 January, 2021, 18:49:47 »
Hello Artur,
Further to Alan's reply - I am no expert, but I think that if you can find any Amal Type 6 carb with a 1" bore, it is likely to be suitable. Suitable jets and rebuild kits are available from Burlen Fuel Systems, U.K.
Cheers, Bevan

9
Pre War / Re: Toolbox catches
« on: 16 November, 2020, 05:12:30 »
A Panther Owners Club member, Bruce Sharman, has made catches for toolboxes on vintage Panthers. He runs https://www.bygonesparesandrestorations.com/
and is very skilled. He is in Perth, Western Australia.
Could be worth contacting if you can't find anything suitable.
Cheers, Bevan.

10
Pre War / Re: Dating a Sloper engine
« on: 08 November, 2020, 20:14:50 »
That's interesting, thanks Julian.

11
Pre War / Re: Dating a Sloper engine
« on: 08 November, 2020, 18:05:39 »
Thanks for the info gentlemen,

The XW1652 engine is for sale, scruffy and missing rockers & rocker box. I was considering buying it in an effort to acquire spares for my S29 (engine P 12434). Price is uncertain at the moment.

There is another engine (P 12174) for sale on our N.Z. online auction site which seems more or less complete, but I fear it will go out of my price range (its already at NZD 2000)

Cheers, Bevan

12
Pre War / Dating a Sloper engine
« on: 08 November, 2020, 02:17:58 »
Hi folks,
Could anyone suggest a likely date for a 500cc ohv Sloper engine with number XW1652  (looks like a 6, but might possibly be 1852). It has been suggested that it could be 1930, but I'd appreciate some guidance on that.

My bike is definitely 1929, which raises another question: were there any significant differences between the 1929 and 1930 engines (I know that the frame was updated, but not sure about the  engine) ?

Cheers, Bevan

13
The Star and Garter / Re: Why do kick start levers jam?
« on: 28 October, 2020, 19:59:49 »
As a matter of interest, I've attached an extract from the 1930 Sloper Owners handbook - the leading quadrant tooth is ground down.

KS jamming is a common issue with Burman boxes as well. Replacement Burman quadrants supplied by the Panther and the Ariel owners clubs have the first tooth ground partly away - see attached image.

Cheers, Bevan

14
Pre War / Re: S29 Sloper 3 speed gearbox - selector shaft end play
« on: 20 October, 2020, 23:26:21 »
Thanks Alan,
Things have gone backwards since my posting unfortunately. I took up a bit of play in the control arm and went to go for another test ride, but as soon as I put it jnto gear, it locked the gearbox and stalled the engine. I have a suspicion I know what's happened, but am away for a few days, so probably won't get back to it until next week. I'll make a video of things since it saves a lot of typing and put a link in this thread if you (or anyone else) would be good enough to take a look and provide an opinion.
Cheers, Bevan

15
Pre War / S29 Sloper 3 speed gearbox - selector shaft end play
« on: 17 October, 2020, 03:28:38 »
Hi folks, can anyone suggest what would be an appropriate amount of side to side play (endfloat I guess) for the selector shaft in an S29 3 speed gearbox ?

I've just done a brief test ride after reassembling the box with a replacement selector shaft (the original fractured at one of the fork collars) and find its a bit uncertain when shifting into 2nd gear. 1st and 3rd seem OK.

When 2nd is engaged with the engine stopped, bike on the stand and the inspection cover removed, I can lever the selector shaft towards the ks end so that I can  get a 30 thou feeler gauge between the shoulder on the shaft and the bushing at the clutch end.

Seems like quite a lot of play, so was wondering if that could be the cause of the dodgy 2nd gear engagement.

Cheers, Bevan

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