Search found 1217 matches

by Canberra
Mon May 10, 2021 7:55 am
Forum: Tech
Topic: Brake grill
Replies: 8
Views: 787

Re: Brake grill

Never seen one on B50s. Are those brake cam levers longer than standard. They certainly don't look genuine.

John
by Canberra
Mon May 03, 2021 12:16 am
Forum: Tech
Topic: Wrong for all the right reasons
Replies: 10
Views: 1231

Re: Wrong for all the right reasons

I shipped my B50 over the Atlantic from UK in early 70s and it sat on the New York docks for only a couple of months before I could get to it from where I was living in Toronto, Canada. When finally picked up it appeared OK, turned over and ran OK so I headed out back to Toronto. It must have had su...
by Canberra
Sat May 01, 2021 8:24 am
Forum: Tech
Topic: Wrong for all the right reasons
Replies: 10
Views: 1231

Re: Wrong for all the right reasons

Maybe BSA knew their bikes were going to be left for long periods, like over winters or even years, so they did this amazing design on purpose for the oil tanks to drain completely into the sump. How many of us have been so naughty to swear at the motor, drain it and refill the tank before trying to...
by Canberra
Sat Apr 24, 2021 9:09 am
Forum: Tech
Topic: Alloy tank tap thread repair
Replies: 13
Views: 1599

Re: Alloy tank tap thread repair

Thanks Jeff, Looks like some experimenting to do. I haven't used such rods before and expect they should be available in Oz somewhere. Will let you know how things progress.
John
by Canberra
Fri Apr 23, 2021 2:36 pm
Forum: Tech
Topic: Alloy tank tap thread repair
Replies: 13
Views: 1599

Re: Alloy tank tap thread repair

Same here the Teflon and Dowty worked initially but when I removed the weeping tank tap I realised the thread was a problem and the tap was not locking securely and the fuel was still coming out. The Dowty works well if the surface of the tank bung is completely flat or else the thin washers do not ...
by Canberra
Fri Apr 23, 2021 1:53 am
Forum: Tech
Topic: Alloy tank tap thread repair
Replies: 13
Views: 1599

Re: Alloy tank tap thread repair

Thanks Jeff, I was actually thinking of trying the later copper/rubber seals instead of the dowty. Has anyone used them?
John
by Canberra
Fri Apr 23, 2021 12:23 am
Forum: Tech
Topic: Alloy tank tap thread repair
Replies: 13
Views: 1599

Re: Alloy tank tap thread repair

I had thought about inserts. There are a few on the market (helicoil, metalock, timesert and bigsert). I often use helicoils and I have various tooling to suit but wondered as it is a split wire, sealing maybe an issue. Bigserts are commonly used on sparkplug holes so they would be a good seal but i...
by Canberra
Thu Apr 22, 2021 1:33 pm
Forum: Tech
Topic: Alloy tank tap thread repair
Replies: 13
Views: 1599

Alloy tank tap thread repair

I found the two petrol tap threads on my B50T tank corroded and in such a poor condition they compromise tap tightening and petrol sealing :cry: :cry: . Has anyone made and welded in two new threaded bosses to do a repair? Are the tapped aluminium inserts available anywhere or would you suggest weld...
by Canberra
Sun Mar 07, 2021 1:57 pm
Forum: Tech
Topic: Riding a B50 MX on the road in the UK
Replies: 7
Views: 2224

Re: Riding a B50 MX on the road in the UK

Only issue I can see is if you use also on dirt, I assume you have road legal tyres?

John
by Canberra
Sun Feb 14, 2021 1:41 pm
Forum: Project bikes
Topic: LOBE 2 20-21
Replies: 236
Views: 45521

Re: LOBE 2 20-21

We used 304 as an industrial grade stainless in making rail wagons, rail cars and passenger wagons. Beat, are you going to stress relieve the frame/welds by any means after construction? Like 316 it can work harden, so I'd be on lookout for cracks. Not normally used in motorcycle frames so it'll be ...
by Canberra
Mon Feb 08, 2021 11:50 pm
Forum: Tech
Topic: B50 ignition switch
Replies: 12
Views: 3739

Re: B50 ignition switch

Thanks Gerry, interesting to know. It seems there is a national design rule in Oz - Vehicle Standard (Australian Design Rule 86/00 – Parking Lamps) 2016 that applies to all vehicles. All I can find on use is they are "advisory" if you are parked at night in middle of nowhere, which seems practical. ...
by Canberra
Mon Feb 08, 2021 8:00 am
Forum: Tech
Topic: B50 ignition switch
Replies: 12
Views: 3739

Re: B50 ignition switch

Does anybody use a parking light? Is it a legal requirement?
by Canberra
Mon Feb 08, 2021 7:57 am
Forum: Project bikes
Topic: B25 SS CV19 project
Replies: 72
Views: 18040

Re: B25 SS CV19 project

Interesting Shannon's insurance didn't bat an eyelid insuring my B50SS with a big bore kit and disc front brake. The B50SS has been road registered for many years and I believe even with changes I should be able to get a concession plate and I note my changes would have been within 10 years using st...
by Canberra
Sat Jan 23, 2021 1:09 pm
Forum: Tech
Topic: Oil drain hole b50 barrel
Replies: 5
Views: 2288

Re: Oil drain hole b50 barrel

Baz, You say between the barrel and crankcase? There is an oil drain through the barrel and ends up between the sleeve and crankcase. Not sure of the dowel you looking at - what part number on the drawing? There is a locating dowel for the alignment of the crankcases (40-0394 on 72 parts book and 67...
by Canberra
Sat Jan 23, 2021 4:58 am
Forum: Tech
Topic: Oil drain hole b50 barrel
Replies: 5
Views: 2288

Re: Oil drain hole b50 barrel

Hi Baz, I have a B50SS and T and neither have a dowel or seal. The only seal being the base gasket on the joint. If it leaked there I would have thought of an O-ring but it has never been necessary. It would be easy to fit an o-ring in the spacer from later engines. Plenty of other areas in the engi...
by Canberra
Sat Jan 16, 2021 8:46 am
Forum: Tech
Topic: B50 hydraulic drum brake
Replies: 58
Views: 11535

Re: B50 hydraulic drum brake

One really good bonus when you fit a later fork with disc is that you have rubber mounting for the handlebar. I have one from a '79 model and there was very little weight difference as the conical hub is so heavy. It cuts out a lot of vibrations from a big single. Brake is set and forget with no iss...
by Canberra
Wed Dec 16, 2020 10:27 am
Forum: News
Topic: Stan Millard
Replies: 20
Views: 7847

Re: Stan Millard

by Canberra
Tue Dec 15, 2020 11:10 pm
Forum: Tech
Topic: race tuning 250 and 350
Replies: 15
Views: 3460

Re: race tuning 250 and 350

<135 Welcome - Yes, we are all still learning :smile: In terms of how many revs you can really get with these engines search the site on our recently departed Stan Millard posts. All his engines breathed and rev'd incredibly high although he was a genius at radical restructuring of the heads. The 25...
by Canberra
Tue Dec 15, 2020 1:43 pm
Forum: News
Topic: Stan Millard
Replies: 20
Views: 7847

Re: Stan Millard

The world has lost a vast knowledge bank and is poorer for it. Stan was a character and will be sorely missed by all from Oz and New Zealand who knew him. RIP.

John and Lynn from Canberra.
by Canberra
Mon Dec 07, 2020 12:13 am
Forum: Parts & Bikes wanted
Topic: Decent Tank Taps
Replies: 12
Views: 3266

Re: Decent Tank Taps

Do the later taps (which appear to be more substantial) fit on a 3 gallon tank? Bearing in mind the taps on the larger tank is a bit close to the side covers.
by Canberra
Mon Dec 07, 2020 12:09 am
Forum: Tech
Topic: clutch friction plates
Replies: 7
Views: 2424

Re: clutch friction plates

If the metal plates are flat although undersized consider adding more plates. Have you any damage to the grooves in the clutch center. They have to be smooth or they will hold up the movement of the plates causing clutch slip.
by Canberra
Sun Dec 06, 2020 2:03 pm
Forum: Tech
Topic: Damaged Sludge trap plug B44R, help needed
Replies: 5
Views: 1645

Re: Damaged Sludge trap plug B44R, help needed

I believe B50 and B44 were same and the plug has a shouldered head about 1/4 inch thick with a slot for tightening. Usually the head is center punched in two places to tighten it into the counter-bore in the flywheel. I don't have one out to measure the thread but it was a coarse thread. They tighte...
by Canberra
Sat Dec 05, 2020 1:37 pm
Forum: Parts & Bikes wanted
Topic: Decent Tank Taps
Replies: 12
Views: 3266

Re: Decent Tank Taps

Thanks Beat. I found a couple of old original taps which were broken at lever. I notice the metal was distinctly better than what is being sold now as replacement parts and body was a lot thicker in section. Does anyone know if they the same as used on Commandos with 1/4 NT threads in early 70s? I s...
by Canberra
Wed Dec 02, 2020 2:15 pm
Forum: Parts & Bikes wanted
Topic: Decent Tank Taps
Replies: 12
Views: 3266

Re: Decent Tank Taps

I'm beginning to think that there are various quality available on the market. I use thread tape on my taps and it is very difficult to tighten the nut and sealing washers without the tap turning. This means holding the body of the tap when the material is rather prone to deformation damage. I figur...
by Canberra
Tue Dec 01, 2020 9:29 pm
Forum: Parts & Bikes wanted
Topic: Decent Tank Taps
Replies: 12
Views: 3266

Re: Decent Tank Taps

The main problem is the thread into the tank and material used on the taps makes it impossible to tighten the tap securely without it fracturing. The tap body is so soft it easily deforms if you try to hold it whilst tightening and this can cause the seal to fail and hinder the taps rotation. They r...
by Canberra
Tue Dec 01, 2020 1:14 pm
Forum: Parts & Bikes wanted
Topic: Decent Tank Taps
Replies: 12
Views: 3266

Decent Tank Taps

After shearing <218 <218 yet another tank tap made from high quality butter on my 3 gallon B50SS tank I am wondering has anyone found good replacement fuel taps <201 <201 to fit the tank without re-tapping the threads that can mate up with the standard hose fittings :?: Good quality brass would be p...
by Canberra
Tue Dec 01, 2020 8:29 am
Forum: Tech
Topic: Setting Valve Clearance
Replies: 8
Views: 2377

Re: Setting Valve Clearance

I've been running with the lower clearances as per eebtr7 for great many years. From what I can see lower clearance may give longer valve timing but by small margin and it would depend if the cam is worn anyway so in effect would act as a re-adjustment. The old sit on TDC on firing was included in s...
by Canberra
Thu Oct 01, 2020 2:41 pm
Forum: Tales Of Woe
Topic: When you're at your Wits End ..it could be worse
Replies: 5
Views: 2372

Re: When you're at your Wits End ..it could be worse

Oh,to be young again (and foolish). Great story, although sad for the nether regions.
by Canberra
Wed Sep 23, 2020 1:20 pm
Forum: Off topic
Topic: The Wurks - New Youtube Channel
Replies: 4
Views: 2270

Re: The Wurks - New Youtube Channel

:thumb Very neat
John
by Canberra
Wed Sep 23, 2020 1:00 pm
Forum: Off topic
Topic: Star
Replies: 317
Views: 105277

Re: Star

Hi Beat,
Lynn and I wish you all the best. It'll take time to get strength back so don't over do things without a brace for a while - take it slowly.
John
by Canberra
Mon Sep 07, 2020 2:34 pm
Forum: Tech
Topic: B25 Rough Running..missing slightly
Replies: 17
Views: 4050

Re: B25 Rough Running..missing slightly

So that's where I have been going wrong all these years :shock: Brilliant :!:

John
by Canberra
Fri Sep 04, 2020 12:03 am
Forum: Tech
Topic: B50 valve lifter to bare casting.
Replies: 37
Views: 6316

Re: B50 valve lifter to bare casting.

My CCM rocker box came with capped hole. I just pushed out the cap and the bored hole came with the recess for the o-ring. One day I'll get around to bushing it. That o-ring works until you get a bit of wear in the aluminium's bore then the dreaded oil leaks come. Even replacing o-rings does not wor...
by Canberra
Sun Jul 19, 2020 10:09 am
Forum: Tech
Topic: Thread : BSC vs BA ?
Replies: 10
Views: 2415

Re: Thread : BSC vs BA ?

I remember that one Jeff. The 10-32 is 60 degree, similar size and works well as a bodge for worn threads. Slightly less TPI but wouldn't be noticed on a standard 2BA nut. Although I doubt if you'd find a deep thread to be tightened into before it becomes a bind. I remember when I worked in a metrol...
by Canberra
Sun Jul 19, 2020 9:49 am
Forum: Tech
Topic: 441 Victor resurection
Replies: 45
Views: 9490

Re: 441 Victor resurection

Knowing BSA it was a way of getting rid of 20 inch stock on hand. Not sure which other BSA models came out with 20 inch. Nothing mentioned on the website but are the tyres road rated?

John
by Canberra
Sun Jul 05, 2020 2:29 pm
Forum: Project bikes
Topic: B25 SS CV19 project
Replies: 72
Views: 18040

Re: B25 SS CV19 project

Thank you very much Jerry T. Your timing was excellent. Leightons just refurbished a B50H seat for me and they made a foam using yours as a guide. Apparently your seat had a one piece foam as designed specifically for the B50H. I have only seen foams which were cut down longer B50SS versions to suit...
by Canberra
Mon Jun 29, 2020 11:38 am
Forum: News
Topic: It's the big one
Replies: 12
Views: 4992

Re: It's the big one

Happy Birthday and don't let those germs get by. Have one (or two) glasses of scrumpy from Lynn and I.

<219 <219 Regards again from bottom of the world (or the top whichever way is up).
by Canberra
Tue Jun 23, 2020 8:45 am
Forum: Tech
Topic: 441 Victor resurection
Replies: 45
Views: 9490

Re: 441 Victor resurection

No 2 - same. Must be starting technique or state of ignition coil.
by Canberra
Thu Jun 18, 2020 2:10 pm
Forum: Project bikes
Topic: Starfire 441
Replies: 91
Views: 33573

Re: Starfire 441

Why not have a word with your local exhaust shop? I got one in Canberra to hand build mine which is a lot more complicated that what you are looking for and it is 1 3/4 OD. It needed a few extra bends to bring it under the frame and out of the way of the kick start which is still a standard part. I ...
by Canberra
Sat Jun 13, 2020 1:09 pm
Forum: News
Topic: Who's a birthday lad?
Replies: 6
Views: 2417

Re: Who's a birthday lad?

Hopefully we can all escape lock-down and get some warmth. I ended up respraying the bike and doing some work on other parts. I used a Ford paint which I thought I could get everywhere years ago. Tango was nice but only ever used on 69 x V8 race bred XB falcons so have to get it specifically mixed a...
by Canberra
Tue Jun 09, 2020 1:39 pm
Forum: Tech
Topic: liner machining
Replies: 1
Views: 929

Re: liner machining

Could it be the original hepolite piston had a long skirt. Maybe they needed the liner to be at a sufficient length but the con rod and bottom of the liner proved a conflict. That created the need for the cut outs on the lower sleeve. With modern short skirt pistons maybe the liner could be shorter ...