Wednesday, 23 July 2014

Testing times


If you read the blog or the mag, you'll know that I have a thing for Moto Guzzis, and one in particular, my 1975 750 S3 which I bought about 23 years ago. But even my patience and loyalty has been tested severely and to the limit for the past few months by a niggling problem that has meant the bike running on two cylinders one moment, dropping onto one, not starting properly - basically, rendering the bike unuseable, and if i can't use it I don't really see the point of it sitting around. Problem is, I've always worked on my own bikes, and I also don't have the available cash to drop it off with someone and say "fix it no matter what the cost".

Anyway, without going into tedious detail, it's had over the last few months a new battery, new points, new coils, carbs rebuilt, new plugs and caps, new condensors, new HT leads, coils substituted, loads of wiring repairs and connectors replaced, compression and valves checked, ignition timing checked (and double-checked by Paul at Corsa Italiana) - so the only next possible step is to rewire the bike from scratch.

But - by last week, after lots of time over the weeks spent by myself, and friends, trying to sort the issues, it was finally running well enough to be taken for its annual MOT test, and a 40 minute ride after the MOT (which it passed, no problem at all...) showed that the bike seems (touch wood etc.) to be running 95% perfectly, which is great compared to it not running at all. There is STILL a glitch somewhere which I can feel, but it accelerates well, so for now, I am just going to try and ride it, put some miles on the clock, and try to ignore the feeling I have (and have never had before) that the Guzzi is now a little unreliable.

I get my bikes MOT tested down at Dave Rogers Motorcycles, which is a 15 minute ride through beautiful Chiltern scenery from my place, and it's always a pleasure to go to Dave's - in fact, we're very lucky round here to have a bike shop run by such a nice guy and who loves old and unusual stuff. In fact, every time I go, there's always a mixed bag of motorcycles outside his shop. Here are a few photos of what was there the other day, including a 'barn find' BMW R75/5 that someone has bought at auction and wants it put back on the road (last used 1980, check the road tax), a nice BSA bobber type thing, Dave's own BMW off-road outfit and his nice red GS, and of course, you couldn't you ask for more than a three-wheeler Robin Reliant full of old motorcycle parts or an ancient Staffie Terrier shop hound. See photos below....

If you're in the Buckinghamshire (UK) area and run an older bike, it's worth seeking Dave out for MOTs and servicing. He doesn't advertise (doesn't need to), so his details are as follows: 

Dave Rogers Motorcycles, tel: 01844 346998 - http://southbucks.net/wpbdp_listing/d-c-rogers/


















4 comments:

Anonymous said...

Try timing gearson your S#... My Le Mans 5 ran well enough but timing gears smoothed the idle, made acceleration very straight forward without any glitches.

Dennis in the US

Anonymous said...

So what "mostly" fixed it?

ITALIAN MOTOR magazine said...

I mostly changed many electrical parts, but I have a feeling the fact that the big 35 amp connector that takes a feed direct from the + battery terminal was splitting so therefore creating lots of resistance was the main issue. Think it may have helped fry a condensor or two. Any, I put back on the old condensors and it now runs perfectly again. So, who knows?

ITALIAN MOTOR magazine said...

Thanks your tips Dennis, I am not convinced by timing gears in a road bike, seen many oics of the alloy ones failing - for me the chain and tensioner works ok.