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CB750K4 New project

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Rob62:
Cheers HG, its baking hot here and has been for weeks now, once she’s mot’d it’ll start raining no doubt

JamesH:

--- Quote from: hairygit on July 01, 2018, 12:31:15 PM ---You may not think it's up to James' standard of restoration, but you have a good looking bike to enjoy the summer with. (That said, it's pi%*ing down here in Devon right now)

--- End quote ---
It’s all relative and Hairy’s exactly right - at the end of the day you saved another 750 and have a superb bike to enjoy the summer on. Enjoy and be proud of your work. It’s bloody hard work restoring these 750’s...but very rewarding..

Green1:
Looks great.
Nothing wrong with a few scratches it shows its been used and enjoyed.
My bikes had enough people around them today so I'm sure yours would.

Rob62:
Another frustrating day with no progress..... :( My original target for having this bike completed was the mallory festival on the 7th july, however despite having the bike built and running by the evening of the 5th, she developed a misfire which turned out to be the ht leads melting. I’ve never seen this before but as they are 45 years old i decided to draw a line under the problem and order some new ones. I took the NSR to mallory and then had a week in henly on thames sampling the local beer.... So today i set about replacing the old coils. They are from wemoto, i have used wemoto coils on other projects with no problems.. The first thing is to attach the correct connections onto the low tension wires. Assumption #1 that the black lead will be the power lead (b and w) and the yellow lead will be the points lead (yellow or blue)... both new coils had one yellow lead and one black lead with spade connectors... So when i make all the connections and then switch on the ignition and turn on the run switch she immediately blows the main fuse. I have double checked that the new connectors are on correctly i.e. black to black/white on each coil and yellow to yellow on one, yellow to blue on the other. Any ideas what would cause the fuse to blow? Would having the power wires (b/w) mixed up with the point wires (yellow or blue) cause a short?.... i need an auto electrician.. any help greatfully received... running out of fuses.

K2-K6:
Not sure if it'll cause a dead short but at least protected by the fuse.

The points wires run straight to earth via the points back plate with the points closed. It's a bit reverse logic as you are switching the earth line when you'd normally, in a conventional circuit,  expect to be turning the power line on and off.

So the setup is,  positive to the coils via ignition circuit,  earth's switched by points.

Hopefully someone can shed some light on the wemoto wire colouring for you. But you've only got one other configuration you can go with, maybe switch over connection and try with new fuse.

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