Search found 1187 matches

by Canberra
Mon Sep 07, 2020 2:34 pm
Forum: Tech
Topic: B25 Rough Running..missing slightly
Replies: 13
Views: 430
Flag: Australia

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: 22
Views: 741
Flag: Australia

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: 734
Flag: Australia

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: 3486
Flag: Australia

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: 55
Views: 4519
Flag: Australia

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: 1378
Flag: Australia

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: 3486
Flag: Australia

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: 16295
Flag: Australia

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: 611
Flag: Australia

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: 354
Flag: Australia

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 ...
by Canberra
Tue Jun 09, 2020 1:24 am
Forum: News
Topic: Who's a birthday lad?
Replies: 6
Views: 611
Flag: Australia

Who's a birthday lad?

Hi Skippy, I see a little birthday cake against your recent posts. Hope all is well and you get a chance to get out for a drink (alcoholic or not) to celebrate.

Happy returns, Regards, John
by Canberra
Tue Jun 09, 2020 1:01 am
Forum: Tech
Topic: B25 1969 starting problems
Replies: 10
Views: 888
Flag: Australia

Re: B25 1969 starting problems

There are a range of electronic ignitions on the market nowadays and we all have preferences and comments on them. Boyer had to upgrade their units as the earlier ones was severely affected by even a small battery drop. Pazon which I am using recommend replacing most original ignition components alt...
by Canberra
Mon Jun 08, 2020 11:20 am
Forum: Tech
Topic: B25 1969 starting problems
Replies: 10
Views: 888
Flag: Australia

Re: B25 1969 starting problems

How is the battery? I've had the misfortune of running a Boyer with the battery on it's way out. I had huge problems starting until I replaced the battery. I use a different electronic system now which is less prone to voltage drop.

John
by Canberra
Fri Jun 05, 2020 1:39 am
Forum: Tech
Topic: valve lifter wear
Replies: 6
Views: 812
Flag: Australia

Re: valve lifter wear

On the B50 there are two designs for the valve mechanism. The later is spring loaded to release the valve lifter. I changed mine many years ago so am unsure of the parts involved. I agree with Momus. Welding may bring up more issues with heat treatment than you're trying to cure. I believe Stan did ...
by Canberra
Tue May 19, 2020 2:46 pm
Forum: Tech
Topic: Tyres
Replies: 10
Views: 991
Flag: Australia

Re: Tyres

I find it'll come down to what you want yourself. Original type patterns, albeit with better compound material, or go for a more modern sportier tyre. I have fitted Metzlers on mine at moment and they seem OK although I do normally prefer Avons. It came down to price as I find the B50 is rather hung...
by Canberra
Thu May 14, 2020 1:15 pm
Forum: Project bikes
Topic: B25 SS CV19 project
Replies: 55
Views: 4519
Flag: Australia

Re: B25 SS CV19 project

Jerry,

Does the large tank have a brace underneath going from one half of the saddle to the other? If so, it would be later version which would be worth selling. These larger tanks (with or without the brace) are as rare as the short seats that went with them.

John
by Canberra
Thu May 14, 2020 1:08 pm
Forum: Project bikes
Topic: B25 SS CV19 project
Replies: 55
Views: 4519
Flag: Australia

Re: B25 SS CV19 project

Being a short arse no wonder the seat on my B50SS feels as high if not higher than the B50T I have :laugh .

This is a warning to anyone considering making a fibreglass version of the seat base :!:

John
by Canberra
Thu May 14, 2020 12:15 am
Forum: Project bikes
Topic: B25 SS CV19 project
Replies: 55
Views: 4519
Flag: Australia

Re: B25 SS CV19 project

Jerry,

Same dimension as mine 305 mm, so no issue with the mount. Mine also is forward in relation to the tank.

Let me know what you decide on use of tank/seat and will pm JB.
by Canberra
Wed May 13, 2020 1:56 pm
Forum: Project bikes
Topic: B25 SS CV19 project
Replies: 55
Views: 4519
Flag: Australia

Re: B25 SS CV19 project

Hi John and Jerry, My pan is so damaged if Jerry goes down the 2 gallon tank route I would be interested in your pan John. I would just need new good foam and cover to suit, which Leightons can make to suit . Attached shows the bodge from BSA for reducing the foam length. I would be interested if an...
by Canberra
Wed May 13, 2020 2:05 am
Forum: Project bikes
Topic: B25 SS CV19 project
Replies: 55
Views: 4519
Flag: Australia

Re: B25 SS CV19 project

Couple of pics to see what BSA did to make the short seat in 71. BSA cut the foam in the centre and lost an inch off the overall length. Certain bodge as the front of the foam is same as the long seat resulting in foam being too narrow at its nose. This stresses the outer cover in use and results in...
by Canberra
Mon May 11, 2020 1:44 pm
Forum: Project bikes
Topic: B25 SS CV19 project
Replies: 55
Views: 4519
Flag: Australia

Re: B25 SS CV19 project

If you have a TLS brake hub in a 20 inch WM1 rim then a previous owner did that. To my knowledge no B50SS came out from the factory with TLS and 20 inch WM1 front rims. Only the B50T and B50MX used those 20 inch WM1 rims with SLS brake hubs. I know of a few B50T riders who changed the hubs for bette...
by Canberra
Sat May 09, 2020 5:57 am
Forum: Project bikes
Topic: B25 SS CV19 project
Replies: 55
Views: 4519
Flag: Australia

Re: B25 SS CV19 project

Jerry, the dual seat/large tank version of the seat is not available. Over a number of years I have given up trying to source. The concept of the works using the longer dual seat/small tank version and cutting the pan off at the front of the pan and taking a strip out of the foam is a bodge but obvi...
by Canberra
Fri May 08, 2020 3:27 pm
Forum: Project bikes
Topic: B25 SS CV19 project
Replies: 55
Views: 4519
Flag: Australia

Re: B25 SS CV19 project

Hi Jerry, I have the same problem with my seat foam and the base had to be reworked with tinplate. Lot worse condition than yours, your base almost looks pristine! When you touch the hardened sections on the foam it falls apart. I was going to get some foam rubber and slice a section off the top of ...
by Canberra
Fri Apr 17, 2020 2:09 pm
Forum: Parts & Bikes wanted
Topic: breather pipe
Replies: 8
Views: 839
Flag: Australia

Re: breather pipe

I found after a while the pipe through the primary case comes lose and leaks. I ended up manufacturing one with out of a hydraulic fitting and use a nut on the inside. Only issue is the fitting is vertical and lets oil blow into the breather. I have restricted it and it tees into the 1/2 inch breath...
by Canberra
Fri Apr 03, 2020 6:22 am
Forum: Tech
Topic: Frame Geometry
Replies: 10
Views: 1357
Flag: Australia

Re: Frame Geometry

On the BSA frame drawing the datum is through the center of the swinging arm pivot and is parallel to the lower top tube. In no way I would consider that is parallel to the ground. I assume all B50 frames are same. In that case that datum would never relate to the ground as the MX has 21 inch front ...
by Canberra
Wed Jan 08, 2020 12:48 pm
Forum: Tech
Topic: Spacer tube for tank fixing
Replies: 6
Views: 1406
Flag: Australia

Re: Spacer tube for tank fixing

The length of the tube relates to the tank rubbers under the tank and the o-ring. I had to customise mine as I use two thicker rubbers and I also use a wedge shaped washer to straighten up the screw when it is in the frame. The original B50H design included that.

John
by Canberra
Wed Jan 08, 2020 12:42 pm
Forum: Tech
Topic: Bsa MX cam
Replies: 2
Views: 958
Flag: Australia

Re: Bsa MX cam

Hi Webby,

Just checking -2 or 4 valve engine?

John
by Canberra
Thu Dec 12, 2019 2:07 pm
Forum: Tech
Topic: Fitting Allen screws to rocker box on B50.
Replies: 27
Views: 3960
Flag: Australia

Re: Fitting Allen screws to rocker box on B50.

Hi mlb50. There were DVDs created on the P92 and supplied by a site member (see here ) . Not sure if there are any more around. They are interesting as they show quite a few welcome upgrades to the original engine. Sadly they never made it to production. Search on the P92 topic (see here ) . John Ed...
by Canberra
Thu Dec 12, 2019 2:02 pm
Forum: Tech
Topic: Fitting Allen screws to rocker box on B50.
Replies: 27
Views: 3960
Flag: Australia

Re: Fitting Allen screws to rocker box on B50.

Without digging out my drawing what are the reference S holes? They are the ones for the head steady. If they are helicoiling the outer holes why not those? They take more stress than the outer holes.

John
by Canberra
Sat Dec 07, 2019 1:57 pm
Forum: Tech
Topic: Fitting Allen screws to rocker box on B50.
Replies: 27
Views: 3960
Flag: Australia

Re: Fitting Allen screws to rocker box on B50.

Engineering practice in Aluminium is coarse thread. My experience is in huge aluminium covers which are automatically fitted with helicoils for added strength and better wear on disassembly/reassembly with steel on steel thread contact instead of steel screw and bare aluminium. I do realise that wha...
by Canberra
Fri Dec 06, 2019 1:22 pm
Forum: Tech
Topic: Fitting Allen screws to rocker box on B50.
Replies: 27
Views: 3960
Flag: Australia

Re: Fitting Allen screws to rocker box on B50.

As far as I am aware B50 had UNC in the head and UNF on the nuts. I have a CCM head with socket cap screws which recess into the rocker box. You just need to be aware different bolt manufacturers use different head dimensions if you have to replace any. I had a thread give way and used helicoils. I ...
by Canberra
Sat Nov 02, 2019 1:39 pm
Forum: Off topic
Topic: Anyone for cricket?
Replies: 24
Views: 5477
Flag: Australia

Re: Anyone for cricket?

Looks like a repeat of a previous year's result with South Africa :oops: . Big :oops: !

Better luck next time.
by Canberra
Sun Oct 27, 2019 12:45 pm
Forum: Off topic
Topic: Anyone for cricket?
Replies: 24
Views: 5477
Flag: Australia

Re: Anyone for cricket?

Poop. No more Wales. Looks like I'll have to support England :roll:

John
by Canberra
Sun Oct 27, 2019 6:58 am
Forum: Tech
Topic: Indicator anomaly
Replies: 5
Views: 4848
Flag: Australia

Re: Indicator anomaly

Totally agree. Do not rely on the standard BSA wiring where they used the frame as the earth. I run extra earths back to a common point. The indicators are very prone to poor earths, especially from the front lights.

John
by Canberra
Sun Oct 27, 2019 6:54 am
Forum: Off topic
Topic: Anyone for cricket?
Replies: 24
Views: 5477
Flag: Australia

Re: Anyone for cricket?

A good question, I'll buy it?

It was a great match, worthy of a final. Maybe one advantage was the coach and his background on Kiwi. This time I'm following my forefathers and looking for a welsh win next.

John
by Canberra
Wed Sep 11, 2019 11:01 am
Forum: Off topic
Topic: Anyone for cricket?
Replies: 24
Views: 5477
Flag: Australia

Re: Anyone for cricket?

With all the ups and downs from both sides, the fifth test will be interesting. I certainly wouldn't bet on the outcome :roll: .

The ladies game is a better bet :thumb .

With the rugby in Japan we'll both be aiming to make a dent against the cousins across the ditch.
by Canberra
Wed Sep 11, 2019 10:53 am
Forum: Parts & Bikes wanted
Topic: Seat Base
Replies: 0
Views: 2383
Flag: Australia

Seat Base

Is there a source for seat pans? I am looking for one to fit a B50SS with 3 gallon tank.

My existing seat foam is a bit tatty and have a new cover but the metal pan is corroded around the edges.

Alternately anyone with a good seat complete for sale?

John
by Canberra
Thu Aug 29, 2019 11:26 am
Forum: Tech
Topic: Rough rear wheel rebuild offset
Replies: 2
Views: 1919
Flag: Australia

Re: Rough rear wheel rebuild offset

Thanks Midgie, I was trying to cheat using this rough measurement method as shown before striping the wheel back out the frame. As each rim varies in width so the 1 7/8 is also not perfect measurement, I checked with a straight bar across either side of the tyre to the rear subframe so that I was ch...
by Canberra
Tue Aug 27, 2019 12:45 pm
Forum: Off topic
Topic: Anyone for cricket?
Replies: 24
Views: 5477
Flag: Australia

Re: Anyone for cricket?

I was trying not to say something :cry: :cry:

It'll make the next game interesting.

John
by Canberra
Sun Aug 25, 2019 11:52 am
Forum: Int BSA Rally and other meetings
Topic: National bsa Rally South Australia
Replies: 8
Views: 3860
Flag: Australia

Re: National bsa Rally South Australia

Hi Trevor, Somehow I doubt if it'll actually be retirement. Maybe a change of jobs - some paid, some not so paid.. Alternately, maybe I'll just become an old fart. So far it looks like I'll be renewing my machine maintenance skills for getting older items working to go to developing countries. It wo...