256
British Bikes / Re: 66 Triumph T100
« on: May 01, 2019, 12:37:44 PM »
If you could get it for say £2,000 or less it might be worth a punt. I had one for a short while but it wasn't really my cup of Assam.
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257
British Bikes / Re: 66 Triumph T100
« on: May 01, 2019, 10:01:51 AM »
That could be a good price. However.....
I never understand why people put bikes up for sale with "minor" problems. Being of a suspicious turn of mind I can't see why, if all it needed was a battery, the owner wouldn't fit one and increase its sale price by £1,000 or thereabouts as it would then be a runner.
I must confess to having fallen for this sort of thing myself in the past......
I never understand why people put bikes up for sale with "minor" problems. Being of a suspicious turn of mind I can't see why, if all it needed was a battery, the owner wouldn't fit one and increase its sale price by £1,000 or thereabouts as it would then be a runner.
I must confess to having fallen for this sort of thing myself in the past......
258
British Bikes / Re: Excelsior Universal 125cc - Rear Plunger
« on: April 30, 2019, 12:22:28 PM »
Keep us posted. And keep the hands and fingers out of the way!
259
British Bikes / Re: Excelsior Universal 125cc - Rear Plunger
« on: April 29, 2019, 02:29:37 PM »
We're about back where we started.
A thin cutting disc in an angle grinder may get between the coils of the springs to cut through the central shaft. Then remove the top part through the hole in the frame lug, lever the bottom section complete with slider up till the rod clears the hole in the bottom lug and you should be able to - very carefully - slide the whole lot sideways to release it. But beware the spring tension.
If you can't get the cutting disc between the coils then you'll have to cut the spring as well.
You asked earlier where you could get parts made and I pm'd you a possibility. I now understand you're in Australia so as that source is in the UK probably not suitable. But don't you Aussies have a reputation for making stuff by melting old saucepans on the barbie?
There must be small machining shops in Melbourne. Here's one: http://www.natex.com.au/
Here's a spring manufacturer: http://springshop.com.au/
A thin cutting disc in an angle grinder may get between the coils of the springs to cut through the central shaft. Then remove the top part through the hole in the frame lug, lever the bottom section complete with slider up till the rod clears the hole in the bottom lug and you should be able to - very carefully - slide the whole lot sideways to release it. But beware the spring tension.
If you can't get the cutting disc between the coils then you'll have to cut the spring as well.
You asked earlier where you could get parts made and I pm'd you a possibility. I now understand you're in Australia so as that source is in the UK probably not suitable. But don't you Aussies have a reputation for making stuff by melting old saucepans on the barbie?
There must be small machining shops in Melbourne. Here's one: http://www.natex.com.au/
Here's a spring manufacturer: http://springshop.com.au/
260
British Bikes / Re: Excelsior Universal 125cc - Rear Plunger
« on: April 28, 2019, 10:23:23 AM »
Gone quiet - I wonder how he's getting on.....
261
British Bikes / Re: Correct Ignition Position
« on: April 26, 2019, 12:09:53 PM »
The .003" is probably just a timing setting value. It won't be the actual points gap. I'm assuming a magneto which would have a points gap of .012" or thereabouts although your use of the term "electronic" is a little confusing.
But normally it's best to time on full advance which is where the majority of the running is done. And I wouldn't necessarily agree that "the stop" will be full advance - different bikes have tight and slack wire advances, eg Nortons with the gear train timing gear had tight wire; when they reverted to each timing wheel driven direct from the crankshaft it became slack wire.
What model BSA is it? I'm sure there will be information somewhere about the correct fully advanced figure.
But normally it's best to time on full advance which is where the majority of the running is done. And I wouldn't necessarily agree that "the stop" will be full advance - different bikes have tight and slack wire advances, eg Nortons with the gear train timing gear had tight wire; when they reverted to each timing wheel driven direct from the crankshaft it became slack wire.
What model BSA is it? I'm sure there will be information somewhere about the correct fully advanced figure.
262
British Bikes / Re: Stops When Hot
« on: April 26, 2019, 10:02:10 AM »
Many years ago I had a Norton 16H that always refused to start when hot & left for half an hour or so. That was fuel vaporising in the carb. The Norton had a stub type carb fitting so no opportunity to fit a tufnol insulator. The only way to start it was to flood it liberally. I was actually told this by an ex-Don R who happened on me kicking vainly one day - which just shows how long ago it actually was!
263
British Bikes / Re: 1970 Interceptor Albion Gear Box
« on: April 23, 2019, 11:18:17 AM »
I must admit that box isn't one of my favourites but they are robust. I'd be looking at wear on the dogs.
264
British Bikes / Re: Excelsior Universal 125cc - Rear Plunger
« on: April 17, 2019, 10:40:58 AM »
If it was double diameter then the seat would tend to move on either bump or rebound (depending which side was which). A thread sounds likely, or even a pin through a collar?
I am 90% sure that replacements can be made and I have PM'd the OP with the email of the chap who made a very good job of mine. Let's face it, a 1950s Excelsior would have been made as cheaply as possible so there are unlikely to be fancy solutions in there.
I am 90% sure that replacements can be made and I have PM'd the OP with the email of the chap who made a very good job of mine. Let's face it, a 1950s Excelsior would have been made as cheaply as possible so there are unlikely to be fancy solutions in there.
265
British Bikes / Re: How to be idle
« on: April 16, 2019, 10:21:44 AM »
.... but I would expect the BSA to have a valve lifter which is the normal way of stopping the engine. It was usually only Villiers runabouts that shut off completely.
What model is it?
What model is it?
266
British Bikes / Re: Excelsior Universal 125cc - Rear Plunger
« on: April 16, 2019, 10:20:07 AM »
Must be rather different to my A7 then.
It must be. The springs needed compressing by between 2 & 3 inches to get the assembly into place. Even putting my (substantial) weight on the main spring only compressed it about 1/2" or so - there's absolutely no way "hand pressure" would have managed it.
I think Norton designed it to be relatively uncompliant - although I have found the system to be quite effective on the road.
John - do you have a link to the picture which may help the OP? With mine, I decided that it was better to sacrifice the rod, which is a simple part, rather than risking damage to the slider which is not. Cutting the rod on the Excelsior will allow the whole lot to be removed from the frame. My new one cost me only £20 to have made (in fact I later discovered that RGM actually supply them for £30). I cannot see that the Excelsior one would be hugely more than this.
There are only a few ways a plunger system can work and as far as I can see all must involve a central shaft ("bearer rod") with a sliding member carrying the wheel spindle. There must then be springs constraining its movement, either internal as the Excelsior seems to be, or external as on the Norton. I would imagine that the Excelsior springs are held by the hexagons apparent on the pictures and that these probably unscrew to release the tension on them. But of course the external springs have been fitted (the internals maybe vanished years ago), complicating the whole matter.
I'm also not clear whether both sides are seized or only one.
Regardless, this is an interesting saga and I look forward to a resolution and all being revealed.
267
British Bikes / Re: Excelsior Universal 125cc - Rear Plunger
« on: April 15, 2019, 11:12:15 AM »
I may be missing something (often the case) but:
1. There is no upper pinch bolt evident on the photos.
2. Even if it were "inside out", it's obvious the slider is seized onto the central spindle: "the vertical tube feels stuck to the centre rod"
3. I can see no way of removing it other than cutting the central spindle.
4. The only part small enough to slide through the top mounting is the spindle. So I can't see how "the whole unit .rod and all should slide upwards through the top mount ,when the bottom bolt and top pinch bolt are out."
I will of course look forward with interest to see how the saga develops. And of course am happy to own up to any errors in my recommendations. Having said that, suggestions on this forum to me to "cover the whole thing with a sheet and lever it out" when I was struggling with the Norton would have probably resulted in damage to one or more of my hands, the bike or surrounding items.
I appreciate this is not a Norton although plunger systems in general tend to follow a very similar pattern. I do bow to anyone here who has direct experience of the Excelsior layout. Part of the problem is possibly the terms being used.
1. There is no upper pinch bolt evident on the photos.
2. Even if it were "inside out", it's obvious the slider is seized onto the central spindle: "the vertical tube feels stuck to the centre rod"
3. I can see no way of removing it other than cutting the central spindle.
4. The only part small enough to slide through the top mounting is the spindle. So I can't see how "the whole unit .rod and all should slide upwards through the top mount ,when the bottom bolt and top pinch bolt are out."
I will of course look forward with interest to see how the saga develops. And of course am happy to own up to any errors in my recommendations. Having said that, suggestions on this forum to me to "cover the whole thing with a sheet and lever it out" when I was struggling with the Norton would have probably resulted in damage to one or more of my hands, the bike or surrounding items.
I appreciate this is not a Norton although plunger systems in general tend to follow a very similar pattern. I do bow to anyone here who has direct experience of the Excelsior layout. Part of the problem is possibly the terms being used.
268
British Bikes / Re: Excelsior Universal 125cc - Rear Plunger
« on: April 15, 2019, 10:04:41 AM »Hi Members,
Cutting the top large spring did not help I still couldn’t take it out as the vertical tube feels stuck to the centre rod. Any further advise? Should I cut the rod next?
Delon
That's exactly what I've been telling you.
You'll almost certainly find that the central rod is seized in the slider which is why you can't remove it in the conventional way.
BTW is it a problem on both sides or just one? On my Norton, one side came apart relatively easily so it was a simple matter to see what was going on.
269
British Bikes / Re: Boyer Ignition for 750 Enfield Interceptor
« on: April 12, 2019, 09:59:33 AM »
Everything's here: http://boyerbransden.com/instructions.html
270
British Bikes / Re: dalesman
« on: April 11, 2019, 10:08:54 AM »
As you say the Puch would have been original but the Cub would make a nicer (to my mind anyway) machine. It does of course depend on how well the conversion has been done.