Leaderboard

Good Evening, I picked up a 1972 G7S a few weeks back and trying to awaken it from its slumber. Electrically, I have cleaned all the connections and have everything working off a brand new battery except the headlamp. I read in an older post (Sacha's) that the headlamp circuit is powered by the magneto, and not the battery (similar to a DT). I have a rectifier, and no voltage regulator that I can find. The headlamp is intact. If that is the case, I will finish cleaning the gas tank, oil tank (shall I flush it with mineral spirits?) and order a carb kit and get this running. It has good compression and spark, so will sort the fuel side out. Thank you!

Wow "its rare alright ,,it must look like this ,,

Standard practice, the headlight is ac. There is sometimes a resistor mounted on the frame (somewhere it will get some cooling) that acts as a load sink to keep the power down. In some cases the load on the system was carefully matched to the charging/lighting load so the was no need for the resistor but leaves you with a system with no spare capacity. No problem in theory until your components age, you can see losing 10% efficiency due to age/ corrosion, will give issues. Normally with the indicators. An arch villan of the 6v universe. Later (late 70's) tec moved on and they were using Zener diodes (cleaver variable resistance that keeps a constant voltage) a forerunner to proper voltage rectification. These are retro fitted to older bikes to stabilise the electrics as they are more efficient. Helping the headlight and battery last due to more consistent power. You could have any one of the above. Flushing the oil tank is probably a good move as you don't know whats been before. Some old oils like castrol R don't mix very well with modern oils. Can clog the pipes. Most 2 stroke owners (me included) , even the proper anoraks replace the oil feed pipes with clear ones for peace of mind.

Bit of time on my hands ,,,So, 400f -

And,,,,,,DT400b

yep, don't try and keep what actual gear you are in in your head. Just go with need to gear up, or down. Then when you stop just rattle them all back to the bottom. Which should be first, after a while it will be automatic. You will stall out or bog badly, you will miss a couple, you will see the revs hit the limiter. Goes with the territory. Don't get disheartened, it wont hurt a healthy mt03, learning from your mistakes is the way with motorcycles.

Sorry haven't commented on this earlier. I've been looking at trying to get a good way of automating posts from here to Facebook, currently I haven't really found a nice way of doing it without spamming everyone. There's a new version launching int he next few weeks which should make this possible. You're right it's Facebook, our traffic significantly dropped once shortly after they launched their groups functionality. Compared to a forum it's pretty useless in regards to searching and usability etc. However it's there immediately in your hand where most people are checking all the time. We'll have an app coming out soon with alerting functionality, hopefully it's going to help!

Whats happenned " ,,this used to be a buzzing forum ,, is it Facebook, ? nothing new in posts and very little members visit the site now,,