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Messages - Rex

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1
Not trying to teach your grandma about eggs here, but carbs have precision drillings, jets and needles, and hit-and-miss experimentation with sizes etc probably isn't going to be conclusive.
What is certain is that the engine is running far too rich, so I would suggest either a complete carb (Bantam, Villiers etc) appropriate to the engine size. There's too many variables in your situation now.

2
British Bikes / Re: B31 spluttering and flashing back through carb
« on: November 16, 2019, 07:43:58 PM »
[  As we look at the Amal catalogue  it shows a pilot jet which can be varied yet looks to be a screw in item.

I'm confused. The Amal Premier carb has both a fixed size but  removable pilot jet (screwed in horizontally into the body) and a mixture adjusting screw. Maybe you're looking at a diagram of this type, though I thought your carb was a Wassell.
According to Hitchcocks it's been common with the new Premier carbs for people to get these two items confused. The pilot jet should remain tight in the body.

3
British Bikes / Re: Scott
« on: November 10, 2019, 03:46:48 PM »
As the blurb says, it's a much later alternator engine fitted to that bike, and the wheel rims (front looks to alloy, rear chrome) don't match, which is not something I'd expect for the thick end of 7 grand.
It could be a good bike (personally I like girders) but it could also be something toshed up for resale. I'd want a good look first before I bid.

4
British Bikes / Re: Scott
« on: November 10, 2019, 10:48:53 AM »
I've got a 1947 Flying Squirrel and it's an absolute joy to ride. It will be the second last to be sold when anno domini starts taking it's toll.
Like a good racehorse they can be finicky and require regular attention, but there's little to touch it for enjoyment when it's on song. Smooth, powerful, nicely-built and guaranteed to be a conversation starter when you park up.
Never ridden a 1920s model but as I understand it they're much the same regarding maintenance requirements and pleasure of ownership. The earlier bikes are two speed and the later ones three speed, and some consider that to be a drawback when riding.
The SOC is a good club (for spares and info) but it doesn't seem to be the place to buy one as they seem to be rarely advertised. I would suggest CarandClassic or good old Ebay might be better.

5
European and Other Bikes / Re: So, there I was...
« on: November 10, 2019, 10:38:03 AM »
They're the ones Pierre couldn't sell at Kempton.. ;)

6
European and Other Bikes / So, there I was...
« on: November 09, 2019, 11:54:41 AM »
..having a nice cuppa with the rest of the bike-riding old boys on Thursday when the conversation went around to "I hear Bob's got a new bike"
"what's that then?"
"He's got a Motobecane"
 "Wot one of those horrible mopeds?"
"Nope, a 125 SV from just post-war, it doesn't run as it's not complete, and he got it from one of those French sellers at Kempton. Looks really nice though".
Sometimes you just have to bite your tongue and keep schtum. This was one of those times. :-X

7
British Bikes / Re: B31 spluttering and flashing back through carb
« on: November 06, 2019, 11:09:04 AM »
I believe that Amal tightened up on it's quality control some years back, and certainly the last two I've bough have been perfect, unlike those bought over ten years ago which were full of swarf.
The irony here is that the Wasell stuff has a bad name now, but in this case that would appear irrelevant.

8
The Classic Biker Bar / Re: Advise on my first vintage purchase
« on: November 05, 2019, 09:46:12 AM »
That Montgomery has clearly been recently restamped, and as it's not DVLA registered that will be a red flag to the DVLA inspector when he examines it. The Carlton had had a recent makeover too (Red rims? Really?)  and the front mudguard is a poor fit.
Personally I would rather see honest rusty bits and missing mudguards etc than pay a premium for something that's been assembled for resale.

9
The Classic Biker Bar / Re: Advise on my first vintage purchase
« on: November 04, 2019, 09:23:12 AM »
I'm not sure everything is OK with this bike: the fork spindles look like Whitworth bolts and the bronze under the gearbox is, well, a lot of bronze.

Allied to the new repro headlamp, the toshed-over tank and front mudguard and the nice little Ebay Chinese tyre pump means that Pierre has put parts together for resale, and it rings those alarm bells.
We could all suggest and post links until Brexit finally happens and still be no nearer what it is you want in a bike. Have you no clarity yet with regards to what you want?

10
British Bikes / Re: B31 spluttering and flashing back through carb
« on: November 02, 2019, 05:36:18 PM »
mention of difficult hot start....... a sure sign of mag windings breaking down......a mini capacitor(aka Thorspark)

Do you mean Easy-Cap? Thorspark is the replacement points assembly system.

11
British Bikes / Re: B31 spluttering and flashing back through carb
« on: November 01, 2019, 10:33:55 AM »
I thought the Lucas MO1 series of mags were all essentially the same. If the DoR and spindle height is compatible then you should be good to go.
I wouldn't jump too soon on the mag conversion though...snap diagnostic "repair by replacement" can be expensive and futile.
What was the starting and running like before all this started? For a mag to fail electrically at the same moment that the sprocket came loose stretches coincidence a bit..

12
The Classic Biker Bar / Re: Advise on my first vintage purchase
« on: October 30, 2019, 10:49:17 AM »
Here's another tip for you then, don't touch the Favor with someone else's barge-pole, let alone your own. Small French motorbikes have been discussed many times on here and the general consensus is to avoid.

Both seem reasonable although personally the Cotton is a little small engine-wise, but that's only my opinion. The Ajay seems OK but like any unfinished resto you really need to see it in the flesh. The restorer may have passed before he completed it but that doesn't mean that it hadn't stalled before that due to some difficulty or other. :-\

13
The Classic Biker Bar / Re: Advise on my first vintage purchase
« on: October 29, 2019, 08:27:50 PM »
Your last sentence makes the most sense. Got to Verralls or Andy Tiernan and have a good look around to decide what you might like and you might be able to strike a deal. I don't see that anyone else could advise you what to buy as it's a personal thing.
That said, 6k really doesn't buy a lot in the type of bike you're looking for, so I hope you're good with advanced mechanics?
Pre-war girder/rigids were the poor relations for years but now they're sought-after, and even the mundane doesn't come cheap. :'(

14
British Bikes / Re: B31 spluttering and flashing back through carb
« on: October 28, 2019, 10:04:01 AM »
True, but then we're talking about a mass-produced rudimentary iron-head commuter than was designed 70 or so years ago. So many manufacturing variables and so many rebuild variables since that that the figure is only ever a guide or starting point.
The point is that accidentally moving the mag lever too far would make it too advanced, and that's harmful.
I have read on the Net about riders who claim to  time to TDC and then jigger with the lever constantly to keep it in the advanced "sweet spot", but I don't think I've ever met someone who advocates that on an old British work-a-day bike.
Dial gauge? A little OTT on a manual mag-equipped B31. This ain't a GP racer... ;)

15
British Bikes / Re: B31 spluttering and flashing back through carb
« on: October 26, 2019, 07:40:12 PM »
Full retard has no role in the timing process. In fact, on some bikes full retard is ATDC. It's the fully advanced figure you need to concentrate on here.
I don't get the bit about marks and pops on the sprag wheel. I prefer the time-honoured method of a pencil/lolly stick/cocktail stick down the plug 'ole, then there's no need to account for lash etc.
If there was a fault with the carb(s) like a blocked pilot jet, then no amount of timing resets etc would cure it, but it seems a bit coincidental that both carbs show the same symptoms.

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