timming

Here you can talk about all kind of TECH for the B50 B44 B25 And Other BSA unit Singles

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timming

Post by BSa 44161 » Fri Jan 01, 2010 5:48 am

Hi can anyone give me a simple answer to this, What is the timming set at fully advanced on my 50t is it 30 or 34deg. I purchased a boyer ignition and power box and want set it, and is boyer a good option for road use.

Mark :ban

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Re: timming

Post by beat » Fri Jan 01, 2010 1:42 pm

I am wonder is there any symple answer ?

just can say what I am setting up : - it is 32° for road use.

a unsymple answer is probably this one : - if you prevere to use your engine reving in low and midrange, - set 30°. ---- if you use it in high revs ( such as road race ) set it near 34°.

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Re: timming

Post by eebtr7 » Fri Jan 01, 2010 3:13 pm

One of the quirks on a B50 is the timing marks. When the pointer is aligned with the slash mark on the rotor, this is the factory setting for 30 degrees. By moving the pointer upslope about 1/4" the timing advances to the 34 degree area.

As Beat says, the 30 degree setting is best for normal street and trail use. It is also more tolerant of modern fuels with regard to octane ratings.

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Re: timming

Post by Chris Pellett » Sat Jan 02, 2010 1:16 am

Service sheet for correct timing figures:
download/file.php?id=88

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Re: timming

Post by BSa 44161 » Sat Jan 02, 2010 1:00 pm

Most gratefull lads, and what about your thoughts on boyer ignitions

mark

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Re: timming

Post by Ian Hingley » Sat Jan 02, 2010 2:17 pm

Boyer? Fit it and forget it.

They're cheap and do what it says on the tin.

I know there are many more sophisticated and expensive options (and people trying to create their own!) discussed on this board.

I reckon I fitted my Boyer 25 years ago, and it still works to this day. Must have paid for itself many times in the reduced number of spark plugs I buy and much less kickstart component wear! For several years I ran with no battery, full lights and just the 2MC capacitor. No problem.

I know there are people on the forum who hate them, so I'll let them chime in ...
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Re: timming

Post by Canberra » Sat Jan 02, 2010 2:24 pm

This subject has been well worn and easy to search for on the site. Had boyer for years myself but if I was going for something new I would get one from the Adelaide guys at Tri-Spark instead.

They are very supportive on their product and they are closer to home in Oz.

John.

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Re: timming

Post by beat » Sat Jan 02, 2010 6:14 pm

hi al,
Ian Hingley wrote: No problem.
sorry, - but - did I misse something ? :?: :?:

beat :laugh :laugh

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Re: timming

Post by BSa 44161 » Sun Jan 03, 2010 6:47 am

Thanks lads

Mark

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Re: timming

Post by Ian Hingley » Sun Jan 03, 2010 3:15 pm

beat wrote:hi al,
Ian Hingley wrote: No problem.
sorry, - but - did I misse something ? :?: :?:

beat :laugh :laugh
Hi beat

Sorry, that should read "No problem with the Boyer. Plenty of other problems ..."
66 BSA Victor Enduro, 72 BSA Lightning, 62 BSA B40 trials, 89 H*nda Bros 650, 96 Aprilia Moto 6.5, 2000 Aprilia Moto 6.5

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Re: timming

Post by beat » Sun Jan 03, 2010 7:20 pm

hi Jan,
Ian Hingley wrote:(and people trying to create their own!)
sorry, that should read " and people run their on created ones already with great succes ...."

beat <931 ....... <906

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Re: timming

Post by beezer » Wed Feb 13, 2019 4:42 pm

eebtr7 wrote:
Fri Jan 01, 2010 3:13 pm
One of the quirks on a B50 is the timing marks. When the pointer is aligned with the slash mark on the rotor, this is the factory setting for 30 degrees. By moving the pointer upslope about 1/4" the timing advances to the 34 degree area.

As Beat says, the 30 degree setting is best for normal street and trail use. It is also more tolerant of modern fuels with regard to octane ratings.
I am wanting to set my b50 to 34 degree full advanced. To move the mark upslope would that be clockwise or counter clockwise. I am guessing clockwise.

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