YZF 750 gearbox....
Moderators: trixynut, Mincehead, dicky, phuk72, Jak, Kevtrx849
- Max
- Janitor
- Posts: 1728
- Joined: Sat Sep 23, 2006 1:30 pm
- Location: Hiroshima, Japan
- Contact:
- phuk72
- Site Sponsor / Administrator
- Posts: 3522
- Joined: Thu Jan 06, 2005 1:47 pm
- Killerwhale
- Site Sponsor
- Posts: 3797
- Joined: Tue Aug 22, 2006 8:41 am
- Location: GBG/Sweden
- Contact:
I get the drift, damn i want something that works both in slow traffic and fast runs on a summer night...phuk72 wrote:It may have started life as a YZF750 box but it was completely re-engineered by Over to the point that, if they had put it into production, they could have legally branded it an Over item.
Think of it as being as close to the YZF750 box as the road going R1 is to what Haga rides
I guess i´ll go back to the original gearing and change frictiondiscs once a year!
- phuk72
- Site Sponsor / Administrator
- Posts: 3522
- Joined: Thu Jan 06, 2005 1:47 pm
- Killerwhale
- Site Sponsor
- Posts: 3797
- Joined: Tue Aug 22, 2006 8:41 am
- Location: GBG/Sweden
- Contact:
I use 16/39 and it revs like a motherphuker! Really nice in town though!phuk72 wrote:I use 17 / 42 gearing and have no problems in town or on fast runsdamn i want something that works both in slow traffic and fast runs on a summer night...
I guess i´ll go back to the original gearing and change frictiondiscs once a year!
- burty
- Site Sponsor
- Posts: 683
- Joined: Wed Nov 09, 2005 11:38 pm
- Location: Rochester, UK.
- Contact:
Another vote for 16/39 from here. Better low down IMHO (I do a lot of town work), although I changed the sprocket before sorting the engine and my engine is much much smoother at low revs than it was, so I wonder if a change back to 17 on the front might be tolerable now.
6000 revs is just over the 100mph, I rarely go much over that anyway. I've never had onto the rev limiter in top, although I'm confident it would get there.
6000 revs is just over the 100mph, I rarely go much over that anyway. I've never had onto the rev limiter in top, although I'm confident it would get there.
- phuk72
- Site Sponsor / Administrator
- Posts: 3522
- Joined: Thu Jan 06, 2005 1:47 pm
I have had mine bouncing off the limiter in top (on unrestricted authobahns in Germany you understand ) and the clocks are reading just shy of 150. This incidentally is what the dyno reckons is the top speed as well.
Only once have I hit the limiter on the track (at Silverstone) - but that was just as I was reaching for the brakes anyway
Only once have I hit the limiter on the track (at Silverstone) - but that was just as I was reaching for the brakes anyway
-
- TRX-Enthusiast
- Posts: 204
- Joined: Fri Oct 06, 2006 5:35 pm
gotta agree with Max on this one, apparently the 850 cams are a bit more lively than the soft tooned 900's. clever chap whoever he isMax wrote:It looks like the main cases and cylinders are off the 900, the head, sump and assorted side covers off the 850. Also, the ratios of the 900 are different from the YZF from memory.
- Huby
- TRX-Enthusiast
- Posts: 5
- Joined: Fri Dec 08, 2006 8:43 am
- Location: Germany/Nottuln
- Contact:
Hello folks
i am just trying to fit an 6speed gearing from the YZF750 into my new Trac-engine...
The problems are: Everything fits fine in the Box...
But anything fits together in the Box..
You have to make new Transmisson Forks, the place where the clutch has to be fitted has to be cuttet, and so on...
I asket some Guy´s in Japan, and i am still waiting for an answer.
By the way --- The Gearbox from the R6 make the same Prob´s
Please excuse my Englisch
i am just trying to fit an 6speed gearing from the YZF750 into my new Trac-engine...
The problems are: Everything fits fine in the Box...
But anything fits together in the Box..
You have to make new Transmisson Forks, the place where the clutch has to be fitted has to be cuttet, and so on...
I asket some Guy´s in Japan, and i am still waiting for an answer.
By the way --- The Gearbox from the R6 make the same Prob´s
Please excuse my Englisch
huby