500:
suddenly, especially in lower gears. There was also strong engine braking when the throttle was backed off. The transmission got high marks in other tests, but the carburetors were criticized. Other testers found fault with the push-pull throttle cable arrangement, and commented on slack in the drivetrain causing some jerkiness. The bike was described as being heavy for its displacement but not feeling the weight on the road. Some wheel skip was induced on a high-speed decreasing-radius downhill turn. Reviews of the revised XS500 indicated that the touchy throttle, carburetor issues and transmission lash of the TX500 had been addressed.
491:
disk, while in back was a 179 mm (7.06 in) drum. In 1976 the front disk was increased in size to 298 mm (11.7 in), and the rear drum was converted to a single 267 mm (10.5 in) disk. 1976 was also the year that alloy wheels were substituted for the traditional wire spokes previously mounted. The front tire size was 3.25-19-4PR and the rear was 3.50-18-4PR. Rear tire size rose to 4.00H-18-4PR on later bikes.
27:
327:
attributed to aeration of the engine oil caused by the operation of the anti-vibration system. Yamaha attributed the problem to excessive heat build-up in the engine and a lack of machine durability. In the TX500 excessive heat build-up promoted warped valve seats and cracked cylinder heads. Its exhaust ports were re-shaped on later engines to improve heat dissipation.
326:
air-cooled twins. While the TX500 and TX750 were released at or near the same time, there were significant differences between their engines. The short production life of the TX500 was due in part to problems with engine leaks and failures. The TX750 experienced similar problems, which were in part
477:
The TX500 and TX750 twins both featured a vibration control technology that Yamaha called an "Omni-phase balancer". In the TX750 two chain-driven shafts with bobweights counteracted vibrations generated in the engine, while the balancer in the TX500 was a simpler version with just a single balance
490:
The frame was a steel double-downtube cradle. The front suspension was a telescopic fork from Kayaba until 1976, when it became a Showa part. Rear suspension was by dual shock-absorbers and swing arm with adjustable pre-load. On early bikes the front brake was a single 270 mm (10.5 in)
499:
Early reviews of the TX500 complimented the bike's handling, crediting the Omni-phase system with smoothing out the engine's inherent vibration. The brakes were also highly rated. A problem with sticking carburetor slides was experienced. Other reviewers found that power came on strongly and
481:
The transmission was a 5-speed fully meshed unit that drove the rear wheel through a #530 chain and a 17/43 sprocket set. The drive cogs were later changed to 16/42. The bike came with both kick and electric start.
470:, which were operated by rocker arms for each pair of valves. Yamaha claimed this was the world's first mass-produced four-valve motorcycle engine. The TX500 was also claimed to be the first motorcycle to use an
462:
The TX500 was powered by a transverse air-cooled parallel twin engine which had a 180° crankshaft. In contrast to the dry-sumped TX750, the TX500 had a wet sump. The valvetrain used
474:-based voltage regulator. The air/fuel mixture was delivered by two 32 mm Keihin constant-velocity (CV) carburetors in early models and by 38 mm Mikunis beginning in 1976.
784:
745:
524:
774:
239:
193:
189:
675:
779:
306:
and then continued to be updated until 1978 when sales ended in the USA. In Europe, the model was available through 1980.
769:
657:
584:
478:
shaft. The chain driving the balance shaft was hidden behind the alternator, making manual adjustment difficult.
463:
697:
620:
145:
528:
314:
The TX500 debuted in Tokyo in
October 1972. It arrived in most markets in 1973, along with the larger
295:
288:
76:
60:
55:
40:
471:
323:
299:
97:
67:
155:
177:
135:
115:
87:
763:
602:
319:
83:
638:
561:
Hill, Ray (November 1973). "Yamaha TX500: Super-Engineered for Super
Performance".
315:
275:
467:
26:
291:
203:
125:
403:
Front fender is mounted without stays. Fender is now body colored.
165:
621:"Struggles with the TX750 and TX500 Bring a Return to the TX650"
73:
298:
and sold in 1973 and 1974. Early models closely resembled the
394:
Model designation is now XS500C. Model code changes to 1J3.
375:
Carburetors receive new jets and plunger-style enrichers.
251:
13 L; 2.8 imp gal (3.4 US gal)
271:
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114:
106:
96:
82:
66:
54:
46:
36:
658:"Yamaha TX500 — A Troubled Birth — A shorter Life"
381:Enlarged balance pipe installed between exhausts.
583:Crichton, Brian (December 1989 – January 1990).
130:32.6 ftâ‹…lb (44.2 Nâ‹…m) @ 6,500 rpm
519:
517:
515:
513:
440:Compression ratio is raised from 8.5:1 to 9.6:1
409:Cylinder and camboxes are now a single casting.
397:New, more rectangular tank and new side panels.
656:Laverty, Peter; Tingate, Rod (December 2018).
372:; full name is XS500B. Model code remains 371.
8:
785:Motorcycles powered by straight-twin engines
19:
412:Compression ratio drops from 9.0:1 to 8.5:1
400:New seat cowling with integrated mudguard.
259:6.7–5.9 L/100 km; 42–48 mpg
25:
18:
585:"Yamaha TX500/750: A Question of Balance"
578:
576:
574:
572:
556:
554:
552:
550:
548:
546:
120:36 kW (48 bhp) @ 8,500 rpm
746:"Half-Liter Holdout: 1978 Yamaha XS500E"
696:Smith, Robert (November–December 2010).
345:Brakes are single front disk, rear drum.
509:
342:Side covers have imitation air intakes.
336:TX500 is introduced. Model code is 371.
302:in style. In 1975 the bike was renamed
170:1x270 mm (10.5 in) disk Front
427:Front caliper now mounted behind fork.
415:Drive cogs change from 17/43 to 16/42.
378:Balance tube added to intake manifold.
603:"Phil Hall looks at the Yamaha TX750"
7:
450:Model designation changes to XS500E.
437:Model designation changes to XS500D.
172:179 mm (7.06 in) drum Rear
421:Alloy wheels replace spoked wheels.
72:498 cc (30.4 cu in)
676:"THE HISTORY OF YAMAHA TECHNOLOGY"
406:New 38 mm Mikuni carburetors.
14:
160:Double-downtube full-cradle steel
322:, both the TX500 and TX750 were
238:185 kg (408 lb) (
198:26.5°/120 mm (4.6 in)
775:Motorcycles introduced in 1973
495:Reviews and riding impressions
453:Last year of sales in the USA.
424:Disk brake replaces rear drum.
355:Designation changed to TX500A.
229:: 1,130 mm (44.5 in)
226:
219:: 2,150 mm (84.6 in)
216:
1:
418:Front fork is now from Showa.
358:Rear brake wear sender added.
221:
384:Fork spring preload reduced.
224:: 840 mm (32.9 in)
208:1,400 mm (55.1 in)
110:180 km/h (110 mph)
92:72.9 mm x 59.6 mm
801:
752:. November–December 2014.
464:double overhead camshafts
24:
468:four valves per cylinder
318:. Like Yamaha's earlier
625:global.yamaha-motor.com
486:Chassis and suspension
458:Engine and drivetrain
339:Fuel tank is rounded.
780:Standard motorcycles
150:5-speed fully meshed
750:Motorcycle Classics
702:Motorcycle Classics
525:"1973 Yamaha TX500"
21:
770:Yamaha motorcycles
698:"The Yamaha TX500"
662:Old Bike Australia
472:integrated circuit
300:Triumph Bonneville
287:is a two-cylinder
16:Type of motorcycle
732:Motor Cycle World
719:. September 1973.
643:RealClassic.co.uk
607:www.mcnews.com.au
589:Classic Mechanics
281:
280:
182:3.25-19-4PR Front
98:Compression ratio
31:1976 Yamaha XS500
792:
754:
753:
742:
736:
735:
734:. December 1973.
730:"Yamaha TX500".
727:
721:
720:
715:"Yamaha TX500".
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683:scootergrisen.dk
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527:. Archived from
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368:Bike is renamed
256:Fuel consumption
228:
223:
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184:3.50-18-4PR Rear
140:battery and coil
29:
22:
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563:Popular Science
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531:on 3 April 2019
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263:(35–40 mpg
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639:"Yamaha XS500"
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664:. p. 59.
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248:Fuel capacity
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136:Ignition type
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77:parallel twin
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533:. Retrieved
529:the original
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369:
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349:
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285:Yamaha TX500
284:
282:
276:Yamaha TX750
146:Transmission
50:Yamaha XS500
37:Manufacturer
20:Yamaha TX500
717:Cycle World
466:(DOHC) and
324:four-stroke
267:) (Highway)
47:Also called
764:Categories
504:References
292:motorcycle
261:‑imp
213:Dimensions
156:Frame type
294:built by
265:‑US
204:Wheelbase
107:Top speed
289:standard
61:Standard
535:30 July
310:History
272:Related
296:Yamaha
235:Weight
166:Brakes
126:Torque
88:stroke
68:Engine
41:Yamaha
679:(pdf)
370:XS500
320:XS650
316:TX750
304:XS500
194:trail
178:Tires
116:Power
102:9.0:1
56:Class
537:2020
445:1978
432:1977
389:1976
363:1975
350:1974
331:1973
283:The
190:Rake
84:Bore
74:DOHC
240:dry
766::
748:.
700:.
681:.
660:.
641:.
623:.
605:.
587:.
571:^
545:^
512:^
192:,
86:/
704:.
685:.
645:.
627:.
609:.
591:.
565:.
539:.
242:)
227:H
222:W
217:L
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
