1957 NH Re-Fresh

[Mick D]

Hi

If you swill the magnet in acetone or fuel to de-grease it and the debris you can get the stubborn 'fluff' off using self adhesive tape.

Regards Mick

[Julian Murphy]

Magnets now fitted.

Put a longer magnet in the oil tank hoping to 'catch' more of the oil in circulation

[Julian Murphy]

What am I doing wrong / What have I missed.

The refresh has been a top end overhaul, and a renovation of the magneto.

The bike used to be a first time starter.

Today, I can only get an occasional spit back through the carburetor.

Carb has not changed. (Checked that I put the needle back on groove 3rd from the top when I fitted a new cable).

The magneto is giving a 'fat' spark at the plug (When earthed against the head).

Ignition timing is 1/2" before TDC, fully advanced. Using 'magneto timing light', not fag paper.

I just have a feeling that the timing is incorrect for some inexplicable reason.

Any thoughts?

[Vincent.vanGinneke]

eh, did you time it on the compression stroke ... or ?

[Mick D]

Hi

Is your auto advance sticking?

Regards Mick

[Mike Nash]

Cartoon Exhaust Stroke.jpg (62.28 KiB) Viewed 1254 times

Yep! I bet that's what you've done!
MikeN.
PS Does anyone know the name of the cartoonist? I think it's from the 1960s.

[Julian Murphy]

Eureka. That was me in the cartoon and

School boy error.

180 degrees out!

What was I thinking?

Started first kick....

[simon.holyfield]

I did a similar thing when I built up the Mk1 - it took my brain ages to get used to the fact that the front crank turns 'backwards'.

[will_curry]

It takes maybe a quarter of an hour to retime the magneto. No time at all to retime a 2-magnet Thorspark
'cause it's got an idle spark and you'll never know. It only takes a few minutes to retime a single-magnet
Thorspark but it can take days for the aching in the right knee caused by all that fruitless kicking to subside.
Your mates of course never forget.

The cartoonist was Bill Thacker.

[Vincent.vanGinneke]

Good.

And just in time to get to the annual !

have fun.