Yamaha TX500 Specification
Yamaha TX500
In October 1972, the TX500 made its premiere in Tokyo. Along with the bigger TX750, it debuted in the majority of the markets in 1973. Both of the Yamaha TX500 and TX750 were four-stroke air-cooled twins, similar to Yamaha's previous XS650.
Although the TX500 and TX750 were launched at or around the same time, their engines had a lot of changes. The TX500's short production run was partially the result of issues with engine leaks and failures.
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| Yamaha TX500 Specification |
Similar issues afflicted the TX750, which were partly attributable to the aeration of the engine oil brought on by the anti-vibration system's operation. The issue, according to Yamaha, was caused by an excessive buildup of heat in the engines and a lack of mechanical durability.
In the TX500, an excessive amount of heat buildup caused broken cylinder heads and distorted valve seats. Later engines had their exhaust ports reshaped to enhance heat dissipation..
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| Yamaha TX500 Specification |
Yamaha TX500 Specs
- Year: 1973 – 74
- Engine: Four stole, parallel twin cylinder. DOHC
- Capacity: 498 cc / 30.5 cu-in
- Bore x Stroke: 73 59.6 mm
- Cooling System: Air cooled
- Compression Ratio: 9.0:1
- Lubrication: Wet sump
- Induction: 2x 38mm Mikuni carburetor
- Ignition: Battery and coil
- Starting: Electric & kick
- Max Power: 48 hp / 36.5 kW @ 8500 rpm
- Max Torque: 4.5 kgf-m / 32.5 lb-ft @ 6500 rpm
- Transmission: 5 Speed
- Final Drive: Chain
- Frame: Full cradle frame – Duplex type” and is 100% of circular steel pipes!
- Front Suspension: Telescopic fork.
- Rear Suspension: Dual shocks swing arm, preload adjustable!
- Front Brakes: Single 267mm disc
- Rear Brakes: Drum
- Front Tyre: 3.25-19
- Rear Tyre: 3.50-18
- Seat Height: 812 mm / 32 in
- Wet Weight: 207.7 kg / 458 lb
- Fuel Capacity: 12.8 Litres / 3 4 gal
Yamaha TX500 Review
It was a revolutionary technology for 1973. It possessed four valves per cylinder, two overhead cams, a counterbalancer, self-cancelling turn signals, and an electronic starter in addition to a disc brake and an electric start.
Except for Yamaha's own TX750, you really can not say that about every mass-produced bike during that model year. It outperformed the Honda CB500, its main rival, and had no vibrations. If you were prepared to let the engine run close to the redline, it moved well and produced good power due to its narrow design.
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Its lack of low-end torque was the only serious problem. To obtain any power, you had to rev it up like a two-stroke. However, if you continued to do so, it would outpace any 650 of the day.
I should add that it required a kickstart when it was cold, just like all electric-start motorcycles of the time. The electric starter was only effective if you stalled a warm bike in traffic because the coils produced very little voltage.
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