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Yamaha TZ700/750


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#51 picblanc

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Posted 16 January 2014 - 21:08

This seen a few times, but here is Piers Forester on his TZ750 @ Snetterton in 1975 & @ Brands Hatch 1976..

PiersForester19752013akwm_zps0b2c4a16.jp

 

ForesterPiersBH19762014wm_zps45e74c2e.jp

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#52 picblanc

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Posted 16 January 2014 - 21:11

Mick Patrick on Harold Coppocks TZ750 @ Snetterton 1976.

MickPatrick19766x42013wm_zps4eea5b75.jpg

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#53 picblanc

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Posted 16 January 2014 - 21:13

Les Kenny @ Snetterton on his TZ750 Easter 1976.

LesKenny19762013akwm_zps4a69beb8.jpg

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#54 picblanc

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Posted 16 January 2014 - 21:14

Mike Trimby @ Snetterton  in 1975 on his TZ750.

MIKETRIMBYTZ700YAMAHA1975SNETTad12013wm_

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#55 picblanc

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Posted 16 January 2014 - 21:15

John Chappell & his TZ750 on a cold day @ Snetterton 1977.

JohnChappellTZ750Snetterton19772013wm_zp

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#56 picblanc

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Posted 16 January 2014 - 21:17

Another Welshman Clive Watts @ Snetterton 1975.

CliveWatts19756x419752013wm_zps6172162d.

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#57 picblanc

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Posted 16 January 2014 - 21:19

Brian Swales lovely looking TZ750 @ Snetterton 1975.

BRIANSWALESTZ700YAMAHA1975SNETT2013wm_zp

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#58 BillPentelow

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Posted 16 January 2014 - 21:19

There must be at least one ugly TZ750 out there but so far i havent seen it.

The one i rode for Interstate came close . It was completely red, oh that may have been my blood from the crashes i had on it. :lol:

They really are good looking. And the sound wow.

remember rebuilding mine after blow up at the good Friday Brands meeting ready for Mallory on Sunday finished it at 4.00am and took it outside to run it up , didnt half wake a lot of neighbors up in the middle of Wellingborough, to this day cannot understand what they were moaning about?



#59 picblanc

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Posted 16 January 2014 - 21:25

Geoff Barry @ Brands Hatch 1976.

forum6_zps5908b7d0.jpg

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#60 picblanc

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Posted 16 January 2014 - 21:33

Pat Mahoney @ Brands Hatch 1975.

MahoneyPatBH197520132013wm_zpsf194bb64.j

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#61 picblanc

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Posted 16 January 2014 - 21:36

Norman White @ Brands Hatch 1976.

NORMANWHITE1976BHAA220142wm_zps7e93167d.

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#62 JAW

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Posted 16 January 2014 - 22:51

Graeme Crosby's memoir has some interesting big TZ stuff in it,

 

- from his description of a classic race-battle  at Bathurst in `79 when it was KR 750 vs RG 500 vs TZ 750,

& all making similar lap times, but with advantages at different parts of the course,

& with TZ top end power/speed, the final clincher..

 

The account of his Daytona 200 victory on a factory YZR 750 is also illuminating..


Edited by JAW, 16 January 2014 - 22:52.


#63 picblanc

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Posted 16 January 2014 - 22:57

Noel Clegg on a Maxton framed TZ750 @ Silverstone 1977.

CleggNoelSilv19772014wm_zps054f8bb1.jpg

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#64 JAW

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Posted 16 January 2014 - 23:09

From Cycle Australia May `74,  P.22, Daytona 200 report,

 

"Fastest through the Traps".

 

1, H. Kanaya,          Korea,         Yam TZ 750,       307.01 km/h.

 

2, Y. Du Hamel,    Canada,         Kaw H2R 750,    298.11 km/h.

 

3, G. Romero,        U.S.A.           Yam TZ 750,      294.11 km/h.

 

4, D. Castro,          U.S.A.            Yam TZ 750,      280.14 km/h.

 

5. B. Sheene,         G.B.               Suz TR  750,     275.86 km/h.



#65 picblanc

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Posted 16 January 2014 - 23:10

Ron Haslam again @ Silverstone this time 1976, with end of his boot missing & toes on show!!

HaslamRonSil19752014wm_zps8a4207bd.jpg

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#66 picblanc

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Posted 16 January 2014 - 23:12

Kanaya in old money is 200mph!!



#67 picblanc

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Posted 16 January 2014 - 23:20

Ron Haslam @ Mallory Park RofY 1975.

HaslamRonMall19752014wm_zpsb0b795ae.jpg

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#68 JAW

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Posted 16 January 2014 - 23:29

Well, not quite 200mph (320km/h), but 190+, & not too shabby - for 40 years ago..



#69 picblanc

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Posted 16 January 2014 - 23:32

Giacomo Agostini 0W29 Yamaha @ Mallory Park RofY 1975.

AgoMall19752014wm_zpsa1cf6b07.jpg

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#70 picblanc

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Posted 16 January 2014 - 23:33

Maths never my strong point! ;)



#71 JAW

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Posted 16 January 2014 - 23:43

Nevermind,

& that Ago shot is interesting, the mag report has a  similar shot of him on the No`10 Daytona winning bike,

but with original twin upright shocks, spoked wheels, front mudguard,

& those crappy angular expansion boxes - that broke up due to the sonic pulses..


Edited by JAW, 16 January 2014 - 23:46.


#72 picblanc

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Posted 16 January 2014 - 23:48

That was the 1974 bike, this the 75 one. Though you probably realise that! :)


Edited by picblanc, 16 January 2014 - 23:49.


#73 JAW

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Posted 17 January 2014 - 00:01

Yes, & curious that some of those Brit machines still had those crack-up jobs on them, years later..

 

Short races less of a problem, maybe?

 

( & just to be un-muddied lake clear, by 'crack-up jobs' - I was referring to the pipes, - probably.)


Edited by JAW, 17 January 2014 - 04:23.


#74 BillPentelow

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Posted 17 January 2014 - 06:28

With regards to top end, the one i rode then went to Keith Heuwen and hit 192mph in the north west 200 amd he was airborne through the trap.

If that was a road bike and a police trap, perhaps he could have got away with it , not actually being on the road  :drunk:



#75 BillPentelow

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Posted 17 January 2014 - 06:35

 With the amazing advancement in the 250 class 2 strokes in the last few seasons before their demise,

 

they were giving well over 100 BHP and still much more ride able than their predecessors.

 

A quick calculation relates to around 300 BHP if the same advancement was made with the TZ750s

 

The original TZ750 was producing around 118. They would have been much much quicker than a GP bike today.

 

Please let the strokers come back one day.

 

And they smelt better.



#76 JAW

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Posted 17 January 2014 - 07:42

From Cycle Guide April `79 TZ 750D (with DG pipes) track test. P.94;

 

"Our rear-wheel dynamometer cranked its needle over farther when the TZ 750 was

 hooked up more than any other machine we've ever tested - 124 hp.

 

That's 29 % more hp than a KZ 1300 in a machine 50% lighter.

 

With a power-to-weight ratio of 0.37hp/lb & a power output of 165hp/ltr, the TZ 750

really defies comparison to any other motorcycle."



#77 BillPentelow

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Posted 17 January 2014 - 07:46

Yes JAW and that was 40 years ago, WHAT PROGRESS.   



#78 JAW

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Posted 17 January 2014 - 07:57

Some more then..

 

"The TZ's wide powerband, 'linear' brakes, compliant, almost plush suspension,

& limitless adhesion produce a machine on which even a fool could feel competent.

 

That this flies in the face of the myths of  TZ as Terrorbike does not, of course,

mean that  the incredible speed available is to be treated lightly."

 

 

To be fair though, a current showroom stock GSX-R 750 is 'bout the same size ('cept weight) & hp..

..it just feels so sanitized/bland by comparison.. ( & wont do ~190mph, either)..


Edited by JAW, 17 January 2014 - 07:58.


#79 JAW

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Posted 17 January 2014 - 08:12

& about the smell, yeah, 2T oil smells aromatic, sweet, right & proper..

 

  But 4Ts.. burning oil.. smell.. like.. death..



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#80 BillPentelow

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Posted 17 January 2014 - 09:07

My 750, locking up apart, was much easier to ride than my 250s.   TZ350e was Soo easy to ride to.

On the 750 in only my 2nd practice session at Mallory i was lapping within a tenth/second of Bakers lap record, i know Mallory is deceiving because of the very short lap.

sadly with it always locking up it sucked all my money away so never got a result on it.

 

Dave Potter had a quick look for me and thought it needed new crankcases, i just couldnt afford £2500 at that point.

 

I did like it though.



#81 fil2.8

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Posted 17 January 2014 - 13:31

Norman White @ Brands Hatch 1976.

NORMANWHITE1976BHAA220142wm_zps7e93167d.

Photo Copyrighted to Graham Etheridge.

 

 

 

yes , Norman on Dave Hornsby's ( Teign Valley Motorcycles Teignmouth/Newton Abbot ) big TZ , went to Brands , IIRC and cleaned up  :up:  , I used to go clay shooting with Dave ..........haven't seen him for a few ( about 30 ) years now ...................... :well:



#82 picblanc

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Posted 17 January 2014 - 18:26

Ron Haslam @ Brands Hatch 1978.

HaslamRonBH19782014wm_zpsb9b9274d.jpg

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#83 picblanc

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Posted 17 January 2014 - 18:38

Roger Marshall giving us a nice view of his Machin & Saunders TZ750 @ Mallory park RofY 1975.

MarshallMall197520132014wm_zpsf717f659.j

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#84 JAW

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Posted 17 January 2014 - 22:44

Per B.P.'s comment post #75, - from  a recent AMCN Michael Scott column, reviewing 10 years of Moto GP,

&  he suggests moving to a 'run what you brung' formula..

 

 

"It might bring back proper racing 2-strokes.

Just imagine how fast & how light a modern TZ 750 or over-size NSR 500 would be."



#85 JAW

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Posted 17 January 2014 - 23:54

I have been recently offered a big TZ Egli ( replica, but proper-job) chassis complete with suspension/bodywork.. & in good nick..

 

What would something like that be worth in Blighty, ball-park-wise?



#86 JAW

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Posted 18 January 2014 - 07:25

& as regards big TZ hybrids, I reckon Warren Willing's version deserves a spot in this thread, just scroll down to find it..

 

http://www.deejay51....800_gallery.htm.

 

AFAIR - didn't the Sonauto Yamaha crew also coax ~190mph out of their 'Golden Bowl' 24hr endurance TZ 750 bolide?


Edited by JAW, 18 January 2014 - 07:26.


#87 greg1953

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Posted 18 January 2014 - 08:52

As much as I love the looks of the 916 series Ducatis and all versions of TZ250 / 350s, the 750, in my eyes is the best looking race bike ever, all versions included, they look so raw and purposeful.

The first one I ever got close to was Phil Gurner's ( R.I.P. ) at Croft, he'd just won either the Ken Redfern trophy or Laird of Croft and a mate of mine was helping him load it into his van, it had slicks fitted and my mate mentioned how hot they felt and how big the rear was ( tiny by todays standards ). It seemed so quick on track we couldn't believe he could hang onto it.

Phil was a Croft regular first appearing on a very beat up Manx then a TZ350 with a big Daytona seat, very quick rider and great to watch whatever he was riding.

Greg     



#88 picblanc

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Posted 18 January 2014 - 11:20

Only photo of Phil Gurner in action I have, is this one that is not sharp, & scanned from the original matt photo with pimples & all!! this is Phil end of 1974.

 

PhilGurner19746x42014wm_zps91c6c5db.jpg

Photo Copyrighted to Graham Etheridge.


Edited by picblanc, 18 January 2014 - 11:23.


#89 picblanc

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Posted 18 January 2014 - 11:49

Neil Tuxworth @ Brands Hatch 1976.

BBNeilTuxworthBH19762014wm_zps86d38a5f.j

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#90 BillPentelow

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Posted 18 January 2014 - 16:35

Looks like a bargain to be had here on evilbay

 

 

http://www.ebay.com/...=p2056016.l4276



#91 picblanc

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Posted 18 January 2014 - 17:15

Alan North @ Brands Hatch 1976.

BBAlanNorthBH19752014wm_zps94a8e624.jpg

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#92 BillPentelow

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Posted 18 January 2014 - 17:15

$_57.JPG



#93 BillPentelow

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Posted 18 January 2014 - 17:16

This is the one for sale in Italy £15100



#94 picblanc

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Posted 18 January 2014 - 17:18

Very nice, it obviously did not sell previously, it was for sale a few weeks before xmas last year.



#95 picblanc

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Posted 18 January 2014 - 17:19

Starting price Bill, reserve still not met?



#96 BillPentelow

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Posted 18 January 2014 - 17:21

Yes Graham , i never noticed that. Thought i had found a bargain.



#97 picblanc

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Posted 18 January 2014 - 17:29

Rob Bron @ Brands Hatch 1977.

BronRobBH197722014wm_zpsf98c1f08.jpg

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#98 BillPentelow

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Posted 18 January 2014 - 17:49

Do you have any of David Vale, he used to win a bit at Mallory in the unlimited and there was another TZ750 always pushing him in 1978 i think?



#99 picblanc

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Posted 18 January 2014 - 18:06

Only went to Mallory once in the 70's Bill, being a hard up Southerner, I used to go to Brands or Snett mainly, not heard of David Vale, new name to me.



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#100 picblanc

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Posted 18 January 2014 - 18:15

Skip Aksland on one of Kenny Roberts bikes @ Brands Hatch Trans Trophy 1977, nice handlebar deflectors was a cold weekend!

AkslandSkipBH197720132wm_zps69bf1bec.jpg

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