Suzuki GS673 Conversion — The Road Test.

 What'll it do mister?

There are no certainties in this life. All we can do is work with the best we've got, and to the best of our ability. When you work with old vehicles, you are left with a hell of a lot of choices. Replace everything for fear of something breaking down the track, or use experience to decide what will keep going, and maybe rely on a little bit of luck. It's probably fair to say we use all of these methods without a second thought.

It would be nice to change every bearing, gear, thrust washer, bolt, moving part etc., but that generally isn't viable. Instead we check, measure and work out what we can get away with. Lots of parts aren't even available anyway so sometimes we are stuck with far greater tolerances. When there is wear in vehicles, we immediately feel it when we ride or drive them but, as human beings, we automatically adjust to cope with the discrepancies. Some better than others.

Sure it's nice to be on a brand new bike, where everything is perfect, but they also leave me feeling somewhat robbed (not just with the cost of them either:). They let you get away with things, incredible brakes, plush suspension, tyres with more grip than you know what to do with. You may even think you're better than you actually are (oof, perish the thought!). 

But with old stuff you feel everything that is happening, hold the bars too hard through the bends and the weaving starts, fight it and things get worse. But relax and let it work everything out for itself and they usually settle down quite nicely. You feel that you're achieving something, that a living being is out for a blast with you, stirs the soul don't they say? (It does get tiring though...)

So ladies and gentlemen, just once, get on an old bike and be amazed at what they will do if you're just prepared to put in the effort...

Suzuki GS550 Petrol Tap Overhaul.

Vacuum taps were once state of the art.

The day you upgraded to a bike with one those new-fangled vacuum taps things was a momentous occasion indeed. No more did you fumble with the petrol tap every time you started or switched off the bike. It was nothing short of a miracle!

But like anything, it can go wrong and some people are put off by trying to fix it. A diaphragm and O-rings are pretty much all there is to it, so this is a quick tutorial on how to fix it. Bearing in mind I've actually taken this tap off the tank four times since painting it, to try and get it to work correctly. It's been a pain, but today I think I nailed it. 

Also, number two carb needle valve could be leaking slightly and allowing it to flood the cylinder when left a couple of nights. Had the petrol tap switched off correctly it wouldn't have been an issue, but if my brother's sister's aunties' nephew wasn't my second cousin I wouldn't be in this palaver anyway. What?

GS550 - Fitting New Points and Condensers.

Fitting what?
Contact breakers, remember them? It appears that many of the younger mechanics coming through don't really know what points and condensers are. Maybe they don't teach them the basics of ignition systems in college anymore, maybe they take no notice because they've never had to fit any.  Probably the latter.

Maybe I'll start with how they work.

To get a spark to fire across the spark plug's air gap, we need a pretty high voltage (20,000 - 30,000 volts), for which we use a coil. Everyone's familiar with those, but just how do you get a spark out of one?  Without electronic jiggery-pokery CDI and transistorised ignition systems?

Stripped Threads... And How To Fix Them.

Doing it in situ.
There will come a time when, if you like to dabble with old vehicles, you will happen upon a damaged thread. And, to be fair, it can be an absolute bastard!

One minute you're tightening up a bolt into an alloy housing, the next the entire thread comes out with the bolt. And you usually only find out during reassembly and most of the work is already done. This is sod's law... par for the course... and a proper pain in the 'arris.

But there is a way. Fret not. You might not even have to strip the component completely if you know what you're doing, although that wasn't the case with this Trident: