The infernal AUTO ADVANCE mechanism is a SERVICE ITEM .
I was lucky , given a BSA unit with the opposite parts to mine worn . Both were clapped out . But 50 % of each was not . Lucky It Made a 100 % one .
with the BSA 24 degrees advance , rather than the Nortons 16 ??
To repeat the lecture for the 5.000 th time ! Strip , CLEAN , inspect . The A Adv mech . meticulously clear . AND in the bores .
Check fredom of operation. dry . no burrs , sticking , tight spots , SLACKNESS , rattle circufrentially . ( Cam dont sift radially on shaft ) .
Flog some new springs from the neigbours Morris 1100 . ( just about ALL Lucas A adv springs fit ! )
I was advised to fit stiffer ones . It made it less prone to light up , getting underway . But less touchy below 3000 odd . depends wotyer like .
Maybe Chain Lube , Chainsaw Lube , Moreys , treacle or suchlike . Coat FULL surfaces - wipe damp . KEEP THE DUST OUT .
OF COURSE youve POLISHED the Points Cam , to a mirror finish !
Lube that fully & wipe . Lube orrible white nylon points heel across . Grease . Toothpick . Swing Over a few points cam rotations .
Tootpick to remove small bead of grease at cam heel . THAT'LL see they DONT pick up , melt , close the points , advance the ignition,
melt the pistons , throw the rods , put the debri thru the bearings , and a few other things .
Creep Out at 2 in the Morning , and Start it up , Points Cover OFF .If theres showeres of sparks everwhere in the wireing , and jumping at the points , somethings not right .
If the Lights ON , you miss all this ! .
It should have a equal sharp blue / white ' snap ' with no tracking & dithering
Look at the date & voltage stamped on the coils , then go and play on the road .
a GOOD coil jumps 1/2 at the lead & the SPARK is Blue & White .
sub par 3/8 min . red yellow ditto .
12 V & megawatt coils cant hurt , but condensors must match . Dead Balanced neither C.B. contact erodes . The one that does tells you if condensors to much or to little .
So , if one erodes , SOMETHINGS OFF . like shitty wireing connections ! You wanna blueprint the brass terminal connections so as theyre all firm . no wiggle .
Give ALL wire connectors a loving douse of C.R.C. to keep moisture & oxidation OUT . Really cunning lazy honda types just throw a can of contact cleaner at it , and have a beer . Instead .
