Introducing my TX750 Yamaha
- Thread starter appiebroomer
- Start date
biker_reject
Over 1,000 Posts
Nice job!
tx mountain by albaljeu, on Flickr
Visit my "tx750 Yamaha" facebook page https://www.facebook.com/pages/Yamaha-tx750/577360362288325
http://en.wikipedia.org/wiki/Yamaha_TX750
The TX750 was a Yamaha motorcycle made in 1973 and 1974. It was loosely based on the XS650 but had what Yamaha called an "Omni-Phase balancer" to counter vibrations which are inherent in a parallel twin with the crankshaft set at 360 degrees (both pistons rise at the same time). Using a pair of balancers (one to stabilize the imbalance of the cylinders, the other to counter the rocking caused by the first balancer), Yamaha’s Omni-Phase balancer essentially eliminated vibration in the TX750, producing a smooth ride previously thought possible only in a triple or a four cylinder.[2] This new system was a first for a Motorcycle but resulted in massive failures for the first model year. Although, these problems were fixed in 1974 sales never picked up and the machine was shelved.
Reception[edit]
Cycle World magazine, in their October 1972 issue positively reviewed the concept when they wrote: "The result is smoothness beyond belief," . "Shut your eyes and you are on a four. It couldn’t be a twin." In addition, the bike was set up with a single front disc brake with provision to install a second one on the other side. European machines were delivered with twin disc brakes from the factory. The bike also had an interesting warning light system with a brake pad wear indicator, a first for a motorcycle.
Reliability Problems[edit]
The bike was popular at first but soon reliability problems began to emerge and the problems lay with the Omni-Phase balancer: At high rpm the balance weights would whip oil in the sump into a froth, aerating the oil and starving the crank for lubrication which resulted in bearing failure.[3]
In addition, the balance chain would stretch, resulting with the counterweights being out of phase and making the engine run rough. Although Yamaha quickly repaired the problems, including a deeper sump and an adjustable balance chain, sales fell and the TX750 became synonymous with poor design and reliability. The 1974 Model was extensively modified with a revised sump and does not suffer from reliability issues.[citation needed]
The TX750 was a Yamaha motorcycle made in 1973 and 1974. It was loosely based on the XS650 but had what Yamaha called an "Omni-Phase balancer" to counter vibrations which are inherent in a parallel twin with the crankshaft set at 360 degrees (both pistons rise at the same time). Using a pair of balancers (one to stabilize the imbalance of the cylinders, the other to counter the rocking caused by the first balancer), Yamaha’s Omni-Phase balancer essentially eliminated vibration in the TX750, producing a smooth ride previously thought possible only in a triple or a four cylinder.[2] This new system was a first for a Motorcycle but resulted in massive failures for the first model year. Although, these problems were fixed in 1974 sales never picked up and the machine was shelved.
Reception[edit]
Cycle World magazine, in their October 1972 issue positively reviewed the concept when they wrote: "The result is smoothness beyond belief," . "Shut your eyes and you are on a four. It couldn’t be a twin." In addition, the bike was set up with a single front disc brake with provision to install a second one on the other side. European machines were delivered with twin disc brakes from the factory. The bike also had an interesting warning light system with a brake pad wear indicator, a first for a motorcycle.
Reliability Problems[edit]
The bike was popular at first but soon reliability problems began to emerge and the problems lay with the Omni-Phase balancer: At high rpm the balance weights would whip oil in the sump into a froth, aerating the oil and starving the crank for lubrication which resulted in bearing failure.[3]
In addition, the balance chain would stretch, resulting with the counterweights being out of phase and making the engine run rough. Although Yamaha quickly repaired the problems, including a deeper sump and an adjustable balance chain, sales fell and the TX750 became synonymous with poor design and reliability. The 1974 Model was extensively modified with a revised sump and does not suffer from reliability issues.[citation needed]
Check out my video.
http://www.youtube.com/watch?v=ML1EPT0c8Iw
http://www.youtube.com/watch?v=ML1EPT0c8Iw
