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Messages - MICKREEVES

Pages: [1] 2 3 ... 6
1
Singles / Re: bsa clutch hub
« on: 20 October, 2017, 11:05:13 »
Thinking ahead to reassembly (Im waiting for my crankshaft return from Alpha), I thought it would be
impossible to assemble the clutch body, on the shaft, then fit the rollers with grease, then have to hammer the
Centre on to its splines without letting the rollers fall out.
So, I have the clutch bod on the bench fit the rollers and grease, then press the centre onto the splines.
The assembly can then be fitted in place with the chain and engine sprocket all together.

I was lucky! The centre slid on with hand pressure only (well , a thump with my fist.)
I had tried the fit beforehand, at each of the six positions. None were successful.
Mick

2
Singles / bsa clutch hub
« on: 20 October, 2017, 09:50:11 »
On many BSAs I have worked on, I have always found that the splined clutch centres,(see photo) and also the  engine sprockets will slide apart by hand, easily.
With my B44, they are both VERY tight.

The clutch took about 20 heavy hammer blows to get off.
The primary chain would not come off the engine sprocket, because of the closeness of the rear case casting.
The sprocket resisted all attempts to pull or hammer off.
I finally got the blowlamp on it, trying to avoid burning the chain. This was successful.

I have now polished the outside splines on the inner clutch centre, and used a dremel grinder to polish the splines
inside the outer part.
Now, the parts will slide together part way, then lock up.
It will take hammer blows to push fully in. I do not want to assemble like this.

How can this be???
Suggestions please.
Mick

3
Singles / Re: B44, Bigend, Piston. Bad vibration.
« on: 18 October, 2017, 10:16:35 »
I have shipped my crank to Alpha for replacement and balance.
Mick

4
Singles / Re: B40 Front Hub
« on: 17 October, 2017, 16:17:43 »
It would be nice know what sort of prices are quoted for both ways!
I think rims are about 100 each, And sets of spokes near to that??
Mick

5
Singles / Re: B44, Bigend, Piston. Bad vibration.
« on: 17 October, 2017, 10:34:19 »
I have stripped the engine.
I dont think a new bigend was really needed. There is JUST perceptable movement.
Now I have it stripped, I will fit a new alpha bearing.
I suppose the whole job was a waste of time and money, but I still want to get rid of the vibration.
I might try making a weight, 58% of the rod and piston (is this correct? ) Then drilling the flywheels as needed.
Mick

6
Singles / Re: B44, Bigend, Piston. Bad vibration.
« on: 17 October, 2017, 10:27:23 »
answering my own question!
I checked again.
Gripping the piston with both hands, push up and down, moving around and sideways.
Finally found a point where a very small amount of play was felt. Enough to hear a small click.
Im guessing that that is the answer?? ANY play is not acceptable??

Suggestions for a good supplier for replacement bearing please.
Mick

7
Singles / Re: B44, Bigend, Piston. Bad vibration.
« on: 13 October, 2017, 10:41:02 »
answering my own question!
I checked again.
Gripping the piston with both hands, push up and down, moving around and sideways.
Finally found a point where a very small amount of play was felt. Enough to hear a small click.
Im guessing that that is the answer?? ANY play is not acceptable??

Suggestions for a good supplier for replacement bearing please.
Mick

8
Singles / B44, Bigend, Piston. Bad vibration.
« on: 13 October, 2017, 10:24:38 »
My B44 vibrates badly on a light throttle opening, opening to accelerate stops the vibration,
closing throttle to overrun stops it as well. This is most noticeable at high RPM.
So bad, bits are dropping off or breaking.

I thought it must be bigend play, or possibly smallend or mains.
I have stripped the top end this morning.
No play to be found at all. I  cant mend something if it aint broke!

I wonder about balance factor?  The piston is 71/798, 1/2 mm oversize. It looks quite normal.
I see bsa part numbers. 41/794 standard, 41/795 + 10 thou, 41/797  + 20 thou (1/2mm)

The engine is not loose in the frame. I cant think what it can be.
I will order a new rocker gasket, and rebuild when it comes.
Any suggestions? Do they ALL have this fault??
Mick

9
Singles / Re: Victor Special Tank
« on: 13 October, 2017, 05:58:48 »
I tried a C15 tank. it is too long to fit.
I would like to try a c25 tank, one of the larger volume ones,
 but they are hard to find, and expensive to try.
Mick

10
Singles / B44Tank 2
« on: 12 October, 2017, 09:38:54 »
Second page

11
Singles / B44 change of tank
« on: 12 October, 2017, 09:37:07 »
Four photos
1. My B44, small alloy tank, 1.4 gal.
2. With C25 tank, 2.1 gal.
3. added home made badge
4. with C15 3 gal tank, WONT FIT.
Mick

12
Singles / Re: Victor Special Tank
« on: 11 October, 2017, 18:40:15 »
Have heard that one make of tank protection varnish for glass tanks, is no good.
Anyone recommend a good one?
Mick

13
Singles / Re: BSA B50 MX issues
« on: 10 October, 2017, 16:49:34 »
Where are you?
Mick

14
Singles / Re: B44 gearbox
« on: 10 October, 2017, 06:12:57 »
I had a bantam which would jump out of top gear.
I found the pins or dogs (what do you call them) were slightly rounded on the ends.
I ground away the edges to make the corners less rounded. only took of about 1 mm on each.
That was successful.
My B44 threw loads of oil out by the sprocket, after I overfilled the primary case.
When I discovered where the level screw was, the leak was cured.
I'm at PE15 9PR.
How can I upload a picture of mine?
Mick

15
Singles / Re: B44 gearbox
« on: 09 October, 2017, 15:30:02 »
you dont say where you are!
Mick

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