First bike memories

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First road bike at 16.
I'd been through four dirt bikes before.
Also, it was an adventure bike as well. Because keg parties were in the woods, or in the gravel pit.
You're the only person I know that has said anything good about that bike, including my Local dealer at the time.
Now we know, there is a little soft spot in that crusty ole heart of yours.
Have to admit, that's a Nice looking Ride.
 
You're the only person I know that has said anything good about that bike, including my Local dealer at the time.
Now we know, there is a little soft spot in that crusty ole heart of yours.
Have to admit, that's a Nice looking Ride.
Most people who gush on about how they sucked, never rode one. Most have never seen one, but carry on about them.
I bought it for $400 in a newspaper ad, expecting quality that I'd experienced with the tuning fork dirt bikes. It never blew up, but I sold it to get a Harley SuperGlide.

Same for Kawi H2.
The sudden power hit when it came on the pipe made fools of the low skill riders. (FASTEST available bike available cheaper than all competitors) They HAD to blame the bike to save face.
People who've never ridden one say : "big motor, but handled like shit!"

Just like the cruiser riders saying: "had to layer down to keep from hitting a Buick" after they panic, clobber the rear brake and fail to avoid.
 
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Bought in December 1977 for £325, a P reg so 1975/76 Honda CB250G5 twin. Well I say twin, it was mostly a 125 single as it never ran properly while I had it. Passed my test on it in January 1978 in the snow (I was hoping it was going to be postponed but no). Immediately went to Sam Cooper’s and ordered a brand new Triumph Tiger 750 and traded the Honda in. He warned me that the Honda’s cam chain sounded a bit rattly and to take it steady. It broke on the way home of course and locked the engine up! Luckily he still took the POS off me but for a lower trade in price. Took delivery of the Triumph early February. The Triumph was good bike, great memories and never a problem.
 
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Bought in December 1977 for £325, a P reg so 1975/76 Honda CB250G5 twin. Well I say twin, it was mostly a 125 single as it never ran properly while I had it. Passed my test on it in January 1978 in the snow (I was hoping it was going to be postponed but no). Immediately went to Sam Cooper’s and ordered a brand new Triumph Tiger 750 and traded the Honda in. He warned me that the Honda’s cam chain sounded a bit rattly and to take it steady. It broke on the way home of course and locked the engine up! Luckily he still took the POS off me but for a lower trade in price. Took delivery of the Triumph early February. The Triumph was good bike, great memories and never a problem.
Like SO MANY things in life....
Best enjoyed FRESH! 😎🏁
 
I keep a spare set of TX750 cases around in case I might need them....
First bike memories
 
View attachment 123226

First road bike at 16.
I'd been through four dirt bikes before.
Also, it was an adventure bike as well. Because keg parties were in the woods, or in the gravel pit.
I've always loved the look of those TX 750s, but they just go to prove how even the Japs can get things seriously wrong. I believe it was the balance shafts chain drive which frothed the oil, causing starvation & engine problems.
Somewhere on Youtube there is a Yamaha factory film all about the model.
 
I've always loved the look of those TX 750s, but they just go to prove how even the Japs can get things seriously wrong. I believe it was the balance shafts chain drive which frothed the oil, causing starvation & engine problems.
Somewhere on Youtube there is a Yamaha factory film all about the model.
What you have is a mixture of information. There were two balance shafts, Chain driven. There was no provision to adjust the tension on the chain. The chain stretched which allowed the balancers to swing wildly, causing the chain to stretch even more. Finally, the chain would break The balance shaft which was timed to avoid the crankshaft would now hit the crank, and the ship was lost. The resolve was to add an eccentric shaft that the balance shaft rode on thereby allowing adjustment of the chain. It solved the problem.

Another serious issue was yes the oil would froth, (certain death for an all plain bearing engine) but that's because the puddle in the dry sump was being whipped by the balance shaft. The resolve for that was a 2 inch tall extension for the sump plate which moved the puddle down below Where the balancer shaft operated, and that completely solved the problem. Look closely at my image of the bike, you can see the sump extension hanging down.
I have archived all the Yamaha factory service bulletins, as well as recalls. Somebody else had them posted on a website 15 years ago and I downloaded them.
 
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What you have is a mixture of information. There were two balance shafts. Chain driven. There was no provision to adjust the tension on the chain. The chain stretched which allowed the balancers to swing wildly, causing the chain to stretch even more. Finally, the chain would break The balance shaft which was timed to avoid the crankshaft would now hit the crank, and the ship was lost. The resolve was to add an eccentric shaft that the balance shaft wrote on nearby allowing adjustment of the chain. It solved the problem.

Another serious issue was yes the oil would froth, but that's because the puddle in the dry sump was being whipped by the balance shaft. The resolve for that was a 2 inch tall extension for the sump plate which moved the puddle down below Where the balancer shaft operated, and that completely solve the problem.
Thanks for that Concours. Of course one could just throw the balance parts away & rebalance the crank to suit. Should be no worse than a Brit twin in terms of vibration.
 
Some of us start out a long way from where we will end up!

At 16 I needed transport so I bought a Lambretta Li 125 Series 1 from a mate! I learned a lot. After many miles on it, and a few yards off it, and a T boning a Morris 1100 that pulled out in front of me, it developed a weird problem. It stopped, I pulled the plug and the gap was closed, I reset it and off we went, until the next time and repeat.

This carried on for a while until the re was an ominous bang. I managed to get it home. when I pulled the barrel the piston fell out in several pieces.

Inspection showed that the gudgeon (piston) pin hole was oval, which sort of explained it closing the plug gap. Stumped this time I bought an Li150 Series 3 from another mate. After I steam cleaned the Dulux Emulsion off it he had painted it with I didn't really have any problems with it, but I sold it on when I went off to join the RAF.

A new mate gave a lift to my home for a weekend on his 1970 ish Honda CD175. And took me back. These were longer journeys than I had covered on the scooters and reasonably comfortable on the pillion, and clearly, the bike was ready to do it again, every weekend if needed.

So some months later when personal transport became a priority again, I went out and bought a new 1972 model and started clocking some serious miles....well serious for me. That sort of set a route through a Yamaha RD250 and on to British bikes, which led to racing, only returning to Yamaha and Honda to cover real serious miles across the UK and Europe in the late '90s to 2011.
 
Me and my '73 having a heater in Deadwood summer of '75, and revisiting September 2025.
 

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Most people who gush on about how they sucked, never rode one. Most have never seen one, but carry on about them.
I bought it for $400 in a newspaper ad, expecting quality that I'd experienced with the tuning fork dirt bikes. It never blew up, but I sold it to get a Harley SuperGlide.

Same for Kawi H2.
The sudden power hit when it came on the pipe made fools of the low skill riders. (FASTEST available bike available cheaper than all competitors) They HAD to blame the bike to save face.
People who've never ridden one say : "big motor, but handled like shit!"

Just like the cruiser riders saying: "had to layer down to keep from hitting a Buick" after they panic, clobber the rear brake and fail to avoid.
I love Kawasaki triples, always have and always will
 
Thanks for that Concours. Of course one could just throw the balance parts away & rebalance the crank to suit. Should be no worse than a Brit twin in terms of vibration.
On reading the post - that is what I would probably do - re-engineer. I suggest many people are probably believers and might feel inhibited. Vibration can be moved in the rev range - the crank in my 850 motor actually moves the whole motorcycle backwards and forwards when it idles. The motor runs dead smooth at 7000 RPM. That Yamaha might have a 180 degree crank - would be slightly more difficult. One of my friends reassembled the crank in a 750 Yamaha to make it 270 degrees.
 
My first motorcycle was a 500cc war department Indian Scout. It would probably do 60 MPH if there was a tail wind. I can ride motorcycles which have their controls completely arse-about. By the time I was 19, I had ten motorcycles in my father's shed. I always had two jobs in the evening after school, when other kids went to coaching college. Hotting-up 650cc Triumphs was my go. I sold the Indian for 36 pounds - you could add 3 zeros to that these days.
 
On reading the post - that is what I would probably do - re-engineer. I suggest many people are probably believers and might feel inhibited. Vibration can be moved in the rev range - the crank in my 850 motor actually moves the whole motorcycle backwards and forwards when it idles. The motor runs dead smooth at 7000 RPM. That Yamaha might have a 180 degree crank - would be slightly more difficult. One of my friends reassembled the crank in a 750 Yamaha to make it 270 degrees.
The TX 750 has a 360 degree crank as far as I am aware.
 
Soon after I thrashed and trashed the orange one, I upgraded to a Honda SL70...
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AW memories..I had advanced to my Norton and had a couple Bultaco dirt bikes. When i ran across two Hondas on the side of a House under a tarp. Bought them both for $50.00, (much different era) One was a yellow CT90 step through, The other was a SL100. Got them both runninng for almost nothing...Never really cared for the CT but fell in love with the SL.
Yes, it was underpowered and undersprung for my size, sure was fun. The ole riding a Slow bike fast thing.........
 
I stuck with just my first bike memory, or there would be 181 other bikes with an average of 3 good stories each. It's been fun collecting, but I firmly believe I'll be reducing the numbers this year. Too many bikes in the way in the shop, and the hangar.

First bike memories
 
My first motorcycle was this Parilla Wildcat 250. I bought it as a semi basket case back in the late '60s/ I rebuilt the engine, sorted out some other issues, and painted it red. It was a fun project, but I didn't ride it much, and eventually sold it.

LS Red AB1200.jpg


My second bike was this Commando Production Racer. I bought it from Dan Gurney in '73, Dan had painted it purple. Said he thought cops would notice it less with a dark color. I repainted it in yellow, rode it on the street for a while, and then started road racing with it. This is me on it in my nivice race in 1974, at Riverside Raceway in Southern California. It was still pretty original, except for the repaint. At that time it was still considered a modern superbike, and I raced it in the AFM 750 Production class, mostlly at Riverside or Onatario.. I raced it regularly from 1974 to 1993, when I quit road racing. I raced it in a variety of configurations, with several local clubs, AHRMA, and eventually AMA.

Novice Riverrside A Cropped 1200.jpg


This is it's final configuration in AMA Pro-Twins racing at Daytona in 1991, with my friend Rob Tulue as the rider. By this time it was 920 cc and pretty seriously modified.

Bikers Station Daytona 1200.jpg


I eventually sold it to a friend, Chris Scott, who had a local bike shop, who had recently purchased a PR with a consecutive serial number to mine. Some coincidence. I sold it without the engine, gearbox, forks and shocks, but included all the original parts, that I had saved while making mods. He restored it, and eventually sold it to a local collector, who displayed it in his private museum.

Ken
 
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