Latest topics
» cruiser 80 chain guard
Today at 7:09 pm by peter@dunfordconstruction

» 2FB dismantled to dispose of in a hurry.
Today at 1:20 pm by SwinTheBike

» Can anyone shed light on this 8E cylinder head?
Today at 12:53 pm by rob spence

» Interesting idea for CDI ignition on youtube.
Today at 8:49 am by rob spence

» Wiring for AMC trials
Yesterday at 9:58 pm by Bigjim

» Can anyone identify these pistons?
Yesterday at 4:02 pm by piston 197

» AMC 20T piston rings
Yesterday at 10:03 am by rob spence

» AMC engined Plover - Wont start
Mon Sep 18, 2017 8:23 am by Davidohyeah

» 1H Starting
Sun Sep 17, 2017 9:47 am by Jack Clegg

Useful gadget

View previous topic View next topic Go down

Useful gadget

Post  Mollbhan on Mon Jun 12, 2017 4:50 pm

As a retired fencing contractor I frequently used an electric fence voltmeter for testing electric stock fences which run at 6-7000 volts (yes even from a 12v battery). I found the same gadget very useful for testing HT leads at the spark plug, for example my old 1939 Plover reads 4000+ at the plug lead whereas my 1959 Plover which is almost impossible to start reads barely 1000 yet still sparks at the plug. These meters are not terribly expensive and could be useful to bike fettlers.

Posts : 22
Join date : 2017-05-05

Back to top Go down


Post  Bigjim on Mon Jun 12, 2017 7:54 pm

Many moons ago, whilst training at BL in Oxford, we were shown a gadget that tested spark plugs and their ignition systems. As the compression goes up, the plug requires a higher voltage to create a spark. Just holding th eplug against the head and watching the spark jump, is no indication it sparks under load.
Poor HT/ ignition wiring/magneto can give a false impression, with the plug out of the head. Villiers services can re magnetise an old tired flywheel. New coils can also be supplied.

Posts : 104
Join date : 2016-06-13

Back to top Go down

View previous topic View next topic Back to top

- Similar topics

Permissions in this forum:
You cannot reply to topics in this forum