www.b50.org

SteveS

Hi Beat From what I have seen from other welders work it would be grown in 'free air'. I guess it's a long and laborious task involving welding then filing and shaping, then welding, filing and shaping again, then keep repeating until full growth. I think we need more advice from people who have act...

SteveS

Hi Beat

I remember Stan commenting about fins but unable to trace the thread.

I know Mark can 'grow' new fins, maybe worth making contact to see how he does it:

viewtopic.php?f=3&t=2749&p=20371&hilit=fin+grow#p20371

SteveS

Looking good :thumb Just a word of warning.......... my mate used an extended front mudguard very similar to what you have fabricated. He had all sorts of problems with vibration causing the stays to break plus a split in the mudguard. He ended up trimming it back very close to the standard length (...

SteveS

Cheers Chris

I'll give it a go

SteveS

Hi Any one got the correct crankshaft nut alternator side - 5/8 Cycle 20 tpi for a B50 71 (21-2066)? Not sure if it is plain or with a shoulder to locate against the rotor? N.B. parts book indicates thread is 5/8 unf but previous discussions have confirmed it is a cycle thread http://www.b50.org/php...

SteveS

Hi

As per his reply earlier in the thread Mark Cook lists the filter (60-2601) on his website, see orange button at top of page marked CCM-Britain. Unsurprisingly the price has gone up since he quoted in 2013

Regards

SteveS

. A little bit more progress............... . Battery tray welded in place which means I can fully mount the rear mudguard and fit a few more ancillaries . Battery tray welded in place.JPG . Made up a nearside cover to mirror the oil tank in 2mm aluminium . ns cover.JPG . Made up a scuttle to tidy ...

SteveS

Hi eebtr7 . Useful temperature :thumb info . I'm not quite as old as some of the European members of this forum and Celsius is more meaningful than Fahrenheit. Hope you don't mind me adding the info to your list: . Gearbox at the filler plug ............................ 132F, 55C Clutch housing at t...

SteveS

Hi

Somethings amiss. Maybe something has partially seized over time? I guess you have already checked the condition of the oil for any tell tale particles and checked the level is correct.

Hope the solution is straight forward

Regards Steve

SteveS

. Picked up the frame from the welders with all brackets etc. welded in place. Quick turnaround and great workmanship :thumb . Also new Head Steady bracket completed. The bracket is held in place by 3 rocker box bolts. . Head steady bracket (1).JPG . Started checking fit of the rear mudguard and oi...

SteveS

. I’ve been looking at sourcing a battery for my current project. I’m limited on space so have been considering going the lithium route. Most of the ready-made 12v lithium batteries still seem very expensive so thought about making up my own battery pack. . Requirement 12v, 12AH, small as possible ...

SteveS

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I've been busy making up more frame brackets, bosses, tabs etc. ready for my local friendly welder to work his magic!
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Once these brackets are in place I can work out where the rear mudguard sits and then make up the battery tray support bracket

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: More frame brackets etc.

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SteveS

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Couldn't resist putting the engine in the frame

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: NS with engine

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: OS with engine

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: OS qtr fr with engine

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: NS Engine

SteveS

. A few more parts fabricated, together with the completion of the rear wheel. . The project has taken so long I thought I would give myself a bit of a boost and assemble some of the parts into a rolling chassis :smile: . NS rolling chassis.JPG . OS rolling chassis.JPG . OS qtr rolling chassis.JPG ...

SteveS

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I didn't go as far as tapping out to 7/16", I just used a 3/8" bolt, one for each footrest, but I'm only a little fella

Also welded heavy duty washers to the cut ends of the tube
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: Underside B50 OIF frame with B44 round barrel motor

SteveS

. Found some free time, so finished truing the front wheel and fitted the tyre :ban. Hell of a workout in this hot weather :grin: . Fr Wheel.JPG . I used some cheap rim protectors. They worked really well :eek: Recommend you invest in a pair if contemplating changing tyres :thumb . Wheel Change Rim...

SteveS

. Hi Scott Thanks for the advice regarding the stand. Will bear it in mind when I get to the final stages of truing the wheels. Managed to lace up the front wheel which has a Triumph Meriden disc hub. I will be fitting twin discs. Still need to centralise the rim but at least it's all together . Hu...

SteveS

Thanks guys

I'll get busy on the lathe

SteveS

Hi I believe the majority replace OEM specified bearings for wheel hubs with those that come with seals. Therefore apart from spacing everything correctly on the wheel spindle/axle is the any need to keep the grease retainers if all the grease is kept in the bearings by the seals? Could they be repl...

SteveS

. While waiting on some more welding to be completed I've been working on the rear wheel. To help with the wheel build I invested in a truing stand. I have been looking around at the various ones advertised and ended up purchasing the one here . It's fairly robust and will certainly be more than ad...

SteveS

Hi Tom

Yes, I will bear that in mind. Hopefully I will have a better idea of where any problem lies over the next few weeks.

SteveS

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Hi Joe
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Gerry's correct, black frame and Chevrolet Hugger Orange for the tank / seat unit.
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Currently waiting for my Borrani rims to arrive so I can make a start on the wheels. Did have a pair of the correct rims but can't find them anywhere

SteveS

. Temporarily fitted gearbox sprocket, made up front engine spacers, bolted t/s crankcase in place, s/arm positioned, just need to find the rear wheel to check the chain alignment, I know I put it somewhere :oops: . Gbox Sprocket.JPG . Fr Engine spacers.JPG . Checked clearance between engines plate...

SteveS

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Good point Gerry.
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I'll drop in a pack of desiccant (silica gel) to keep things dry

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Should just have enough room for a spark plug and feeler gauges

SteveS

. Hi Gerry . Ignition will be fired from the regular location but as you say the points cover will be miles away. Since the 5 speed gearbox projects such a long way out I had to fabricate a couple of covers to get everything to line up. The final outer cover at the front acts as a small toolbox whi...

SteveS

. Seems like I spent half of the day making the rear engine plates :roll: Don't know where the time goes . Blanks on left, original A65 plate on right.jpg . Completed engine plates.jpg . Engine plates in place.jpg . I have a sneaking suspicion that the swing arm may foul the engine plates so will f...

SteveS

Hi Beat

In essence it's a BSA A65 frame - pre oil in frame with a few modifications. Hopefully things will become clearer as the project moves forward.

As you say lots of work ahead

SteveS

Hi Beat

What's troubling you?

SteveS

I've used the technique before as a younger man.

Just be careful how hard you hit the drift as you can knock out a hole in the back of the casting. It's just over 2mm thick. Ask me how I know

If you support the back of the casting you should be ok

SteveS

. Picked up the frame from the welders this afternoon. Making some progress at last :ban . ns front.JPG . os front.jpg . ns rear.JPG . I've still got a lot of work to do on the frame. Main task will be to bolt the engine in place, mount the swinging arm and rear wheel and then check sprocket alignm...

SteveS

Hi,

Quite a few suppliers list an inner tube that fit a range of tyre sizes e.g.

Michelin 18MF (Centre Metal Valve) Motorcycle Inner Tube
Can fit: 3.25-18, 3.50-18, 4.10-18, 100/90-18, 110/80-18.

Regards

SteveS

Hi I believe this was a feature on some of the BSA WDB40 models as there was a different requirement for establishing the gearbox oil level. This was not a standard feature on oif variants that I am aware of. However as the boss is already cast in place a PO may have made use of it. Someone may be a...

SteveS

Great work Beat!

My guess at the weight is 205kg.

Would love to see a video of the bike in action with passenger!

Regards

SteveS

. More work on brackets. . This time it's the rear shock top mounts. Been putting off making them for ages as I knew it would be tricky................ I've made them from 3.0mm mild steel. The originals were 12 gauge (approx 2.6mm). I didn't use any heat just a BFH :lol: The final shape is effecti...

SteveS

Hi Beat This must be very frustrating for you In the UK until recently we had to have our BSA's MoT'd every year. Some MoT test stations took a more pragmatic view of testing and understood that the brakes on a 50 year old bike would not pass tests to today's standards. I had my favourite MoT test s...

SteveS

minetymenace: don't think any of the oif tanks had a strap underneath....

Hi Gerry

See post here from the late Steve m

Regards

SteveS

. Just been reminded that the idea for this project started March 28th 2009 which is 10 years ago :shock: Where does the time go? . Completed some work on swinging arm pivots: . 1. S-Arm Adjuster Plates.jpg . 2. Adj plates tacked in place using original s-arm pivot as datum.jpg . 3. Adj Plates.JPG ...

SteveS

Thanks Mark

I was taking bets with myself that you would know

Regards Steve

SteveS

I have a very good primary cover but a previous owner has stripped the thread completely from one of the inspection holes that take the screw in slotted plugs (57-2166 / 70-9800). Does anyone have any idea of the thread as I was going to get the primary cover welded and then re-cut the thread. Any h...

SteveS

. Very slow progress, too cold in the unit, no heating :( . Made a few brackets, take forever to complete: 2 x Oil tank brackets, one of the two top mounts still to make 1 x Oil cooler bracket 2 x Seat rail tube plugs . Frame brackets 1.jpg . Next job is to make up the swinging arm pivot plates but...

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