TX 750 Yamaha a classic?

Yeah, not as a production item -that white `d likely go brown on the demo bikes..
 
Don't really agree on the TX, the -74 model had ironed the oil problem of the 73 (oil foaming) and it was a great bike: smooth, more power than the 650XS, great brakes (with the twin discs) and road handling ok once the bars and rear shocks changed... Of course it does not have the charisma of a Commandio but I often look at the ones for sale...but I need another bike like a kick in the...
Philippe
PS: of course the GL would had be great!!! a TZ700 for the streets!!!I would had replaced my H2(s) by one in an heartbeat... Went to a kick only Sporster instead...
Philippe
 
I have no experience with the bike, except for the forks and wheels.
Eight valves and counterbalancing was great stuff but unfortunately it was air cooled and 750cc, just as water cooling and the shift to liter bikes were coming on.

The front end is almost straight off a TZ750, larger diamater fork tubes and larger disc too, all on a nice Borrani/Akront knock off wheel. Those Yamaha iron caliper brakes, IMO were the best of the era, although heavy.

The rear rim is a nice piece as well, but it is 36 holes.
 
xbacksideslider said:
I have no experience with the bike, except for the forks and wheels.
Eight valves and counterbalancing was great stuff but unfortunately it was air cooled and 750cc, just as water cooling and the shift to liter bikes were coming on.

The front end is almost straight off a TZ750, larger diamater fork tubes and larger disc too, all on a nice Borrani/Akront knock off wheel. Those Yamaha iron caliper brakes, IMO were the best of the era, although heavy.

The rear rim is a nice piece as well, but it is 36 holes.

Sorry, only four valves. The wheels are by DID, the chain company. Here's mine I rescued at an auction for $400,
TX 750 Yamaha a classic?

and then went through it a bit
TX 750 Yamaha a classic?

TX 750 Yamaha a classic?

TX 750 Yamaha a classic?
 
Nice bike - once you'd been through it.

Weren't they the ones that the early versions aerated (frothed) the oil with the 'omni-phase' balancers ? So when it needed oil at speed, all it got was froth !!
Wonder how they solved that glitch ??
 
Someone I knew bought new its little brother, the TX500. It was a 4 valve design.
Nice bike, but no torque down low. Sold it before it gave any trouble whatever.....
 
Rohan said:
Nice bike - once you'd been through it.

Weren't they the ones that the early versions aerated (frothed) the oil with the 'omni-phase' balancers ? So when it needed oil at speed, all it got was froth !!
Wonder how they solved that glitch ??

Yes, you are correct. They came upon that after much guesswork that included an oil cooler, various other things that didn't work. A racer sawed a slot in the side of the oil tank and made a plexiglass window, observed the foam.
TX 750 Yamaha a classic?


The fix was a sump extension of 2" to move the scavenge puddle down away from the balance weight flaling away. You can see the low hanging sump (extension) in the image I posted.

TX 750 Yamaha a classic?
 
Did you change the oil filter too (kind of remember a BMW part used to replace the small box)? Somes say good oil (not really available in -73) is "almost" enough to cure the problem?!
Funny ...now I've worked a lot of my XS2 ($$) I have my usual lack of interest for it... maybe I should have bought a TX750!!!
Philippe
 
prmurat said:
Did you change the oil filter too (kind of remember a BMW part used to replace the small box)? Somes say good oil (not really available in -73) is "almost" enough to cure the problem?!
Funny ...now I've worked a lot of my XS2 ($$) I have my usual lack of interest for it... maybe I should have bought a TX750!!!
Philippe


Good oil will not cure the foaming, that is folklore. The sump extension will cure it. The plain bearings in the mains and rods will not live with the foam. I made my own oil filter base, mounted it under the swingarm, kinda Commandoish. The BMW filter mod uses only a HALF an airhead filter, I thought it would be too little flow (just my worthless opinion, lol) so I fabbed the spin-on deal. I'm currently tidying up the plumbing to allow the mainstand to fit back on.
 
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