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Messages - BEVANC

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1
Pre War / Re: 1930 BSA B30-3 Side Valve
« on: 05 April, 2018, 01:38:06 »
If they are similar to the same era Slopers, then there is no support plate.  On my S28, the cam spindles are fixed into a D shaped hole in the case and the other end is supported in steel bushes in the timing cover. The engine main shaft is supported in a ollite bush through which oil is pumped to the bjg end.
Cheers,
Bevan

2
Pre War / Re: 1926 Flat Tank restoration - parts needed
« on: 31 March, 2018, 23:14:51 »
This might be the chain case - could be cheaper to get one made !
Cheers,
Bevan

3
Pre War / Re: Blue Star rocker lubrication
« on: 22 March, 2018, 06:14:49 »
My '29 Sloper rockers are similar to Julian's picture - I pump grease into them every now and then; too much and it oozes out and onto the exhaust pipe !

4
The Star and Garter / Why
« on: 14 March, 2018, 02:57:14 »
Apologies if this has been explained previously - As a non-UK resident, I am puzzled by some bike adverts that end with "why".
Could someone please explain the significance of this ?
Cheers,
Bevan

5
Pre War / Re: 1929 Sloper kick start
« on: 13 March, 2018, 00:08:34 »
Thanks Calvin; that is a useful fix if needed.  I think my spring is probably o.k., because my ks is in the same sort of position as Deans when at rest.  It is the angle at which it initially engages which is the problem.
All will be revealed I hope when i get time to open it up.
Cheers,
Bevan 

6
Pre War / Re: 1929 Sloper kick start
« on: 07 March, 2018, 18:43:36 »
Will do.  Could be a month or two - I'm trying to get the final few things sorted on the rebuild of my Panther Sloper before i take the BSA apart.
Cheers,
Bevan

7
Pre War / Re: 1929 Sloper kick start
« on: 07 March, 2018, 08:36:22 »
Thanks for the comparitive info Dean; I will have to open up the gearbox for a looksee - my ks is at a similar angle to yours when at rest, but does not engage until approx 80 degrees off the vertical.  My guess is that the leading edge of the quadrant is missing a number of teeth - can't think of any other explanation.
Cheers,
Bevan

8
Pre War / 1929 Sloper kick start
« on: 05 March, 2018, 05:04:11 »
Hi folks,
Could some one with a Sloper with a 3 speed box give me an indication of what angle the ks actually engages when you kick it over ?  On my bike, the ks is almost horizontal, meaning that there is very little travel to get the old girl spinning over and firing up.  Also, it tends to jam at the top, which I presume is due to the leading tooth on the quadrant not engaging correctly ?
Cheers,
Bevan

9
Pre War / Re: BSA 350cc OH sloper 1930 Cylinder base shim
« on: 14 February, 2018, 18:18:00 »
I bought a good quality rear stand for my 500 Sloper from "British Only Austria"

10
Pre War / Re: Blue Star brake pedal
« on: 09 February, 2018, 03:12:24 »
Hi Les,
This is the brake on my 1929 Sloper.  Let me know if you want a photo from a different angle.
Cheers,
Bevan

11
Pre War / Re: Starting problem after magneto rebuild
« on: 02 November, 2017, 00:47:46 »
A further comment from another forum:

"Tight wire advance was the norm till around the 50's on BSA's.
M's remained that way AFAIK till the end of manual advance where the B's & A's got slack wire advance.

As for timing.
The .003" opening at TDC assumes that the points are .012" at full lift,and both sprockets are in the correct positions on the engine & magneto , if it is differnt then the timing will be out.
Now the easiest way to alter the timing is to change the max points opening, try it at .002" increments
IF you think the spark is too far advanced, close down the points gap a thou or two.
You can knock around .004" to .006" off the max opening and still get a spark, although it might break down at higher speeds so this is only done to quickly test the timing and not for running.
If the engine starts then the sprocket has slipped on the magneto.
If the magneto has just been overhauled then it should produce sufficient energy to spark at less than optimal flux opisition although it might brak down at higher revs.
From ( unreliable ) memory the magneto sprocket is on a plain taper and the engine sprocket is keyed.
Thus it is very easy to get the sprocket in the wrong position.

The opposite occurs when you enlargen the max opening so you can go each way very quickly to test if you have the timing right."

12
Pre War / Re: Starting problem after magneto rebuild
« on: 30 October, 2017, 17:51:41 »
A suggestion posted in reply on another forum:

"Pull the valve chest cover off and the mag end cap.
Rotate the engine to where the fag paper just pulls through the mag points then flip over to the other side and check you can turn both of the valve adjusters between your fingers indicating that the valves are closed.
Also check the valve lifter is not holding the exhaust valve open"

Best of luck :)
Cheers,
Bevan

13
Pre War / Re: Starting problem after magneto rebuild
« on: 30 October, 2017, 13:09:00 »
Hello,
A much more experienced Sloper owner than myself has the following comments\queries:

1/ From the photo, the magneto does appear to be tight wire advance, so the timing procedure you described should be correct. When tightened, the cable is definitely rotating the cam in the direction opposite to engine rotation, isn't it ?  If not, then the ignition could be way, way, advanced and would cause the symptoms you describe.

2/ Is there any chance that one of the valve timing gears could have been moved by even 1 tooth during the the magneto replacement ? This would also cause starting problems.
 
Cheers,
Bevan
 

14
Pre War / Re: Starting problem after magneto rebuild
« on: 30 October, 2017, 01:05:37 »
Hello,
I have posted your query on another forum and will let you know of any advice. 

I'm by no means an expert, but my Sloper has a similar carb to your bike.  Just because fuel drips from the carb does not guarantee the jets are clear.  I would take the carb apart, ensure the jets are clean, and the float level is correct.  Although kick back is often due to the timing being incorrect, I think that too lean a mixture could also be a cause.
Cheers,
Bevan

15
Pre War / Re: Sloper wiring info advice please
« on: 15 October, 2017, 07:07:38 »
Hi Tony,
Don't have a 1934 diagram but I do have a wiring diagram in a "Book of the BSA" that says it is for: "the 1936 Lucas Magdyno lighting equipment with instrument panel, without automatic voltage control"; also a diagram for "1937-9 Lucas Magdyno lighting equipment with instrument panel, with automatic voltage control".
Let me know if you'd like me to scan a copy of either or both.
Cheers,
Bevan
Methven
N.Z.

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