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Bill

if I ride BSA unit singles , I drive Citroen 2cv cars too ... (nobody's perfect :thumb ) And I'm pretty sure that before the big cartridge filter , there was nothing on these engines but gauze .... IF it was used elsewhere , it would be as Minety says , agricultural use .... Yeah the memory has fai...

Bill

Oh well not 2CV then, unless the ancient models had them before the spin on types.

Bill

Bill

Paper elements are available from farmyard machinary suppliers.....must be used on some ancient tractor... Yup. Many years ago I just took my old B25 filter down to the local car accessory shop and asked them if they had one like it. When I told them it was from a bsa motorbike the manager there, a...

Bill

Hi Gerry, I’m still looking in almost every night I just haven’t had much to contribute.

Boys doing fine, he's got himself an HNC in engineering, just needs a job now to use it.

cheers

bill

Bill

If anyone does make a steel or alloy base for a Tr5T seat I would be interested in one.

bill

Bill

I notice everyone is happy to waste more profit in consumables like hacksaw blades or cutting disks, will the scrap yard not take them complete?

Bill

That seems a bit harsh, how much will you get for the scrap?

How about free to a good home and new owner to pay shipping.

Bill

When you get down to trying to date a bike by what parts are fitted there is a slight complication to take into consideration. Take my B25 for example, the BSA owners club records show that it was made in 1971 and shipped off to Canada, but as it remained un-sold by the end of that year it got shipp...

Bill

Ah not me but that’s ok, no worries

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Bill

I could use that I'll send a pm, shame to bin it.

Bill

Bill

You may want to take the springs out of the forks and make sure the front tyre does not hit the frame before you weld it up.

bill

Bill

Any chance this is an escaped Fury frame.

Bill

Yes the crank was in backwards, it was popped in just for a photo and i didn't notice. The rear oil feed is a scuba diving fitting 3/8 unf x 3/8 bspp drilled to increase the internal bore with a hose tail attached Morts Cheers but i meant the little black tank below, i thought it was an oil filter ...

Bill

When I prime my B25 with oil after a complete clean out I usually take the plug out and with the fuel and ignition off I push the bike down my garden drive way in 2nd gear, that gets the oil up through the return line filter and can be seen coming into the frame.

bill

Bill

Ah looks like it’s going to be a proper street scrambler.

I’m interested in the oil feed filter, did you buy it or make it ???

bill

Bill

I Read an article by Tony Jones of OTJ years ago and he used a small plate mounted over the crank end using the alternator mounting studs, he then had a bolt to screw in through the plate and close up to the crankshaft end, just enough to get a feeler gauge in, say 25 thou then lock up the bolt. Now...

Bill

Hi Beat this is one of my favourite threads so I hope you get this circuit cracked, it does look like a back emf issue to me as well. Protecting the active components (transistors and diodes) in a high frequency & high voltage inductive coil circuit is a real nightmare, but it’s usually just som...

Bill

Thanks crankbuster, I’m certain I have 2 plain rings so I’ll enquire tomorrow if that’s a mistake or maybe just what’s available if I stick with AE / Hepolite So does anyone know what is the advantage of tapered rings, surely after some running they will be just as flat as plain rings anyway? Edit, ...

Bill

Hi folks I am looking for some help identifying the piston compression rings for a B25, I expect one to be plain and one to be tapered for use on an AE piston type 16945 I’ve just received a set of new old stock AE/hepolite +20 rings and I was expecting to easily identify the tapered ring for the mi...

Bill

I never seen this post because I hardly ever look in this section, I think it is worth putting in the main tech section for more exposure.

bill

Bill

Oh well I got the time to strip it down and find the problem, the bore was just as I thought in great condition and the piston was hardly worn, but--- The top compression ring had snapped off a little piece about 8mm long from one end and the little bit of ring was trapped in the piston ring grove r...

Bill

Thanks Chris, these are just the sort of things I was looking for just because it was so sudden. I drain the tank overnight so it’s not petrol and same type of oil for years, I also checked the tappets and timing just to know they were ok, and a quick check for debris in the oil sump plate, nothing ...

Bill

Yeah I was tempted to do it tonight but it is still covered in muck so I’ll wait until I can jet wash it.

cheers

bill

Bill

Wow a reply in minutes.

No strange noises, apart from the smoke all seems well, but it was just fine the last time out for a run last weekend.

The boys at collage these days and works weekends so not much biking for him just now.

bill

Bill

My B25 seems to have developed a smoking habit, it suddenly started to vent vapour/smoke out of the little vent pipe and any other exit in the engine it can find like the gear change or the points cover. Ok so it looks like blow-by the piston/rings is pressuring the crankcases so a new piston and re...

Bill

10 minute swill out with neat petrol in an outdoor location and you’re done. Block off all the exits, oil out feed, oil in pipe and vent pipe, stick a small bit off 8mm fuel line on each pipe with an 8mm bolt jammed and clipped on the end. Empty out by un screwing the frame filter and slunge into a ...

Bill

Roy you said a customer of yours wants this done, how interesting, what else do you do and is it a full time business or a hobby??? I often scratch around for a local machinist to make some special bits, I need a special wheel spindle made up at the moment. Stan you need to write that book, I bet yo...

Bill

Just wondering what size and make that back tyre is, it looks like a good trail bike tyre.

bill

Bill

Well thanks for that explanation Stan, I get it now.

Good luck with the project Jimmy, we love pictures.

bill

Bill

Chris if you do go ahead with an idler gear project post up some details at the time, i would like a big fat tyre and disc brake on the back of a TR5T.

cheers

bill

Bill

Some more pictures of the engine and the sidecar swing arm idler gear for the chain, that could be so useful.
Can anyone explain the engine, how it is supposed to work??

Bill

Great event well run and with mint condition CCM’s everywhere, Mark was getting great starts, usually around 5th to 8th out of the first corner, and Paul Chiappa on one of Chucksy’s loan bikes was getting holeshots all day.

Oh yeah and that engine AJ CCM has posed a question about, interesting.

bill

Bill

HI there, just looking at the pics, is the steering stem a bit of screwed rod?
If so will that hold up at high speed.

Bill

Ah no part numbers then, well if he had them made as specials he was quite right to keep the info.

Ill have a look over the weekend for my last catalouge from about 1999 or 2000, but I have moved house since I last seen it.

bill

Bill

When OTJ were still trading Tony Jones used to recommend Cords rings, and of course he sold them. I suppose if anyone has a copy of his hand written and drawn parts catalogue the Cords part numbers for all the BSA unit singles will be in it, along with his side notes. He used to contribute BSA techn...

Bill

Just to let you know, I also have the picture off set to the right.

brand new wide screen laptop just out of the box running windows 7

bill

Bill

Bill, I've booked accomodation at Farleigh, I'm riding a B50 to the event and I've sent in my entry form for my CCM to be ridden by my Brother in law in the CCM/4 stroke race. It's a good spectator circuit and should be a safe ride for the less experienced scrambler. Even if it's only the same as o...

Bill

CCM’s with H*nda, Rotax and S*zuki engines just don’t do it for me; I was bursting a gut trying to sort out family holidays and stuff so I could get to Farleigh this year and see 40 of the best proper CCM’s around. Why travel a 1,000 mile round trip when I can see H*nda engines in special frames any...

Bill

Looks like a fun play bike, I would have it in a minute.

Bill

Warning Epic Post A bit off the maths formula theme but here is how my seat of the pants dyno/flow bench works. First off the workshop was a wooden shed with a single light bulb and the workbench is just on my hands and knees on the floor as usual. The bike was my 1971 B25 used for fun off road, my ...

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