511:
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.
502:
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.
38:
338:
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.
337:
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
488:
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
501:
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)
510:
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
492:
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.
481:, 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
473:
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
485:-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.
795:
756:
535:
785:
250:
204:
200:
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790:
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and then continued to be updated until 1978 when sales ended in the USA. In Europe, the model was available through 1980.
780:
668:
595:
489:
shaft. The chain driving the balance shaft was hidden behind the alternator, making manual adjustment difficult.
474:
708:
631:
156:
539:
325:
The TX500 debuted in Tokyo in
October 1972. It arrived in most markets in 1973, along with the larger
306:
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108:
78:
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126:
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330:
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649:
572:
Hill, Ray (November 1973). "Yamaha TX500: Super-Engineered for Super
Performance".
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286:
478:
37:
302:
214:
17:
136:
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Front fender is mounted without stays. Fender is now body colored.
176:
632:"Struggles with the TX750 and TX500 Bring a Return to the TX650"
84:
309:
and sold in 1973 and 1974. Early models closely resembled the
405:
Model designation is now XS500C. Model code changes to 1J3.
386:
Carburetors receive new jets and plunger-style enrichers.
262:
13 L; 2.8 imp gal (3.4 US gal)
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47:
669:"Yamaha TX500 — A Troubled Birth — A shorter Life"
392:Enlarged balance pipe installed between exhausts.
594:Crichton, Brian (December 1989 – January 1990).
141:32.6 ftâ‹…lb (44.2 Nâ‹…m) @ 6,500 rpm
530:
528:
526:
524:
451:Compression ratio is raised from 8.5:1 to 9.6:1
420:Cylinder and camboxes are now a single casting.
408:New, more rectangular tank and new side panels.
667:Laverty, Peter; Tingate, Rod (December 2018).
383:; full name is XS500B. Model code remains 371.
8:
796:Motorcycles powered by straight-twin engines
30:
423:Compression ratio drops from 9.0:1 to 8.5:1
411:New seat cowling with integrated mudguard.
270:6.7–5.9 L/100 km; 42–48 mpg
36:
29:
596:"Yamaha TX500/750: A Question of Balance"
589:
587:
585:
583:
567:
565:
563:
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559:
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131:36 kW (48 bhp) @ 8,500 rpm
757:"Half-Liter Holdout: 1978 Yamaha XS500E"
707:Smith, Robert (November–December 2010).
356:Brakes are single front disk, rear drum.
520:
353:Side covers have imitation air intakes.
347:TX500 is introduced. Model code is 371.
313:in style. In 1975 the bike was renamed
181:1x270 mm (10.5 in) disk Front
438:Front caliper now mounted behind fork.
426:Drive cogs change from 17/43 to 16/42.
389:Balance tube added to intake manifold.
614:"Phil Hall looks at the Yamaha TX750"
7:
461:Model designation changes to XS500E.
448:Model designation changes to XS500D.
183:179 mm (7.06 in) drum Rear
432:Alloy wheels replace spoked wheels.
83:498 cc (30.4 cu in)
687:"THE HISTORY OF YAMAHA TECHNOLOGY"
417:New 38 mm Mikuni carburetors.
25:
171:Double-downtube full-cradle steel
333:, both the TX500 and TX750 were
249:185 kg (408 lb) (
209:26.5°/120 mm (4.6 in)
786:Motorcycles introduced in 1973
506:Reviews and riding impressions
464:Last year of sales in the USA.
435:Disk brake replaces rear drum.
366:Designation changed to TX500A.
240:: 1,130 mm (44.5 in)
237:
230:: 2,150 mm (84.6 in)
227:
1:
429:Front fork is now from Showa.
369:Rear brake wear sender added.
232:
395:Fork spring preload reduced.
235:: 840 mm (32.9 in)
219:1,400 mm (55.1 in)
121:180 km/h (110 mph)
103:72.9 mm x 59.6 mm
812:
763:. November–December 2014.
475:double overhead camshafts
35:
479:four valves per cylinder
329:. Like Yamaha's earlier
636:global.yamaha-motor.com
497:Chassis and suspension
469:Engine and drivetrain
350:Fuel tank is rounded.
791:Standard motorcycles
161:5-speed fully meshed
761:Motorcycle Classics
713:Motorcycle Classics
536:"1973 Yamaha TX500"
32:
781:Yamaha motorcycles
709:"The Yamaha TX500"
673:Old Bike Australia
483:integrated circuit
311:Triumph Bonneville
298:is a two-cylinder
27:Type of motorcycle
743:Motor Cycle World
730:. September 1973.
654:RealClassic.co.uk
618:www.mcnews.com.au
600:Classic Mechanics
292:
291:
193:3.25-19-4PR Front
109:Compression ratio
42:1976 Yamaha XS500
16:(Redirected from
803:
765:
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753:
747:
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745:. December 1973.
741:"Yamaha TX500".
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732:
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726:"Yamaha TX500".
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694:scootergrisen.dk
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538:. Archived from
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379:Bike is renamed
267:Fuel consumption
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195:3.50-18-4PR Rear
151:battery and coil
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574:Popular Science
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542:on 3 April 2019
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274:(35–40 mpg
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650:"Yamaha XS500"
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675:. p. 59.
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259:Fuel capacity
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147:Ignition type
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88:parallel twin
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544:. Retrieved
540:the original
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373:
372:
360:
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341:
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296:Yamaha TX500
295:
293:
287:Yamaha TX750
157:Transmission
61:Yamaha XS500
48:Manufacturer
31:Yamaha TX500
18:Yamaha XS500
728:Cycle World
477:(DOHC) and
335:four-stroke
278:) (Highway)
58:Also called
775:Categories
515:References
303:motorcycle
272:‑imp
224:Dimensions
167:Frame type
305:built by
276:‑US
215:Wheelbase
118:Top speed
300:standard
72:Standard
546:30 July
321:History
283:Related
307:Yamaha
246:Weight
177:Brakes
137:Torque
99:stroke
79:Engine
52:Yamaha
690:(pdf)
381:XS500
331:XS650
327:TX750
315:XS500
205:trail
189:Tires
127:Power
113:9.0:1
67:Class
548:2020
456:1978
443:1977
400:1976
374:1975
361:1974
342:1973
294:The
201:Rake
95:Bore
85:DOHC
251:dry
777::
759:.
711:.
692:.
671:.
652:.
634:.
616:.
598:.
582:^
556:^
523:^
203:,
97:/
715:.
696:.
656:.
638:.
620:.
602:.
576:.
550:.
253:)
238:H
233:W
228:L
20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
