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Black Museum
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Derek's D5
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May 27, 2015 - 10:55 am
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Got one for ya MD. Here:

sprocket-1-1.JPG

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MOSOGER
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May 27, 2015 - 11:23 am
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[Image Can Not Be Found]

Hi Dookie, Can you sense a pattern emerging,

Although looking at the output shaft from the gearbox, that was unaffected by this wear it was probably designed weaker to save damaging the spigot.dunno

Bob

Mosoger

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Hawaii50
West Penwith, Cornwall
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May 28, 2015 - 8:28 pm
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When the chain jumps round a tooth it's probably time to think about saving up for a new one doh

Worn-Sprocket.jpg

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1950 D1 (Ex Hawaii!), 1936 Ariel 500 OHV, 1923 Raleigh Model 2 350 SV, Various bikes hidden from the Missus in sheds, under floorboards etc., etc., ...

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Piquet
West Norfolk
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July 24, 2015 - 2:27 am
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Some of you may remember my mishap with the chain at the BSAOC open day at Market Harborough

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I've just found the remains of the split link stuck in the chain grease deposited on the inner face of the alternator housing below the gearbox sprocket and clutch release scroll.

On close inspection it appears a portion of the retaining lip at the top of one of the pins has broken away allowing the clip to escape. In addition there looks to be a certain amount of chafing to the pins where the outer plate was located.

Good job I didn't find the bits on the day or I may have tried to re-use it and ended up causing more grief!

P1010828-rsz.JPGP1010829-rsz.JPGP1010830-rsz.JPGP1010831-rsz.JPG

I should add that this chain was the original that came with the bike from new and although the bike had done less than 7000 miles at this point, the previous owner had told me that he had spent quite some time cleaning and lubricating the chain to get it into a usable state due to it being rusty and seized in places from when the bike had been standing unused. It should have alerted me to a possible problem. Lesson learned.

Now filed under 'Experience'!

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I'm not a complete idiot ............................................ some parts are missing.

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Piquet
West Norfolk
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July 26, 2015 - 3:00 pm
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Seems to be another common problem, the Speedo with a mind of it's own and then self destruction.

My speedo was working reasonably well, although up to 45-50 mph it read anything up to 10 mph fast, over 50 it was impossible to guess the correct speed as it swung backward and forwards in a wide arc.

I had noticed it felt warm when returning from a couple of long runs but thought it was because the headlight had been on and it is very close to the bulb, but then one day I was riding along, glanced at the speedo and the needle was missing. The centre boss was still there but it was spinning round and round all the time the bike was moving. The odometer was still working. Nothing I could do so I kept going. Next time I looked at the speedo (only a mile or two further on), the whole face was dancing around along with the odometer which, when I could read it, had increased from reading just over 7000 miles (original) to over 42000!

I decided to disconnect the cable to prevent any more damage but when I came to do so, the speedo was very hot (no lights on).

I've since removed the speedo and there are numerous screws and pins floating around inside, looks and sounds expensive!

P1010834-rsz.JPG

I'm not a complete idiot ............................................ some parts are missing.

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Maddog Leary
Melbourne Australia
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July 27, 2015 - 10:58 am
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Piquet!,

What on Earth were you doing to the poor thing???   Sounds like a catastrophic failure...  Can relate to a degree; bunged my favourite blues cd in the pc last night, cd player rev'd up then went mental, then there was a loud crack and rattling noise.  Upon inspection inside i found the cd had literally shattered......  Hope it isn't too bad inside your speedo.

MD cheers

Maddog - 56 Swingarm D3 Major -  Major Works in progress! Machine is fighting against me every which way!

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dimitris
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July 27, 2015 - 11:25 am
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Piquet, from what you are decribing, most probably the problem is in the wheel that receives the motion (rotation) of the cable, and transform it to the next wheel (and from there to the odometer)

There is a magnet responsible to rotate the needle. A disk is rotating, and it is  connected to a spring under the needle, to bring it down to zero when stoped.

Failure in the first wheel, its plastic- could cause from heat and melted the wheel's edges, maybe could cause all of these...

I am searching for the rounded wheel with the axle that the needle sits, to fix a spare one i have...

So if this is beyond repair, let me know 🙂

dimitris

BSA D1, 125cc (1952)---BSA D10 Sport 175cc (1967)---Triumph Cub T20 (1960)

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Piquet
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July 28, 2015 - 1:04 am
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dimitriscy said

So if this is beyond repair, let me know 🙂

dimitris

I'll bear that in mind when I find out. Should be quite a few faulty ones about though, self destruction seems common. frown

I'm not a complete idiot ............................................ some parts are missing.

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welshbiker
Penmaenmawr North Wales
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March 15, 2016 - 9:44 pm
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Sprung Chicken
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May 22, 2016 - 8:34 pm
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2016_05220001-640x480.jpg2016_05220002-640x480.jpg

Didn't know there was a charging coil on the stator until I took it off.....

Dougie;Glasgow ;Scotland.
1955 D1, 1970 B175

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not henpecked
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February 21, 2018 - 4:03 pm
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Hi All

During the spripping of my B175 engine I put all the parts into seperate boxes for easy identification on the rebuild. Crankcase together - turn attention to the clutch and look what I removed and what should be there between the gearbox and bronze clutch bearings.

Not what BSA intended methinks 2 nylon washers instead of a steel one !

IMG_0410.JPG

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B175, being updated & now much closer to completion. Honda XBR 500, and ....... Suzuki Burgman 200 scoot! Nicknamed "The hair dryer" - by me I hasted to add; & great storage under the seat when you get to your destination.

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Mags 1
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February 21, 2018 - 9:33 pm
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This looked familiar.

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Even more so once I'd got the steel and ally apart via heat and brute force.

Yet another spare kickstart quadrant to add to the pile now, but I doubt it'll ever be able to play the piano again.

Four now on the road and at least several in bits.

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Mags 1
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February 21, 2018 - 9:43 pm
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Not sure if this is off the same side casing, generator maybe, this time.

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Sometimes Bantams seem to bring out the worst in people, somehow! 

Four now on the road and at least several in bits.

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Mags 1
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February 21, 2018 - 9:45 pm
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Four now on the road and at least several in bits.

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Mags 1
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February 21, 2018 - 9:48 pm
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That'll do for a start, I'm sure!

Four now on the road and at least several in bits.

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