XR11/73

[garry55]

guys - thanks for the info (and pictures too, Dave)

I was all ready to cut metal off the clutch side.............

[garry55]

did either of you guys grind metal off the end of the GS's (output) 4th gear engagement dogs, as mentioned in the Pink Possum article?

[tz375]

I had better go back and read that again to see what I forgot to do.... I need to assemble this cluster in a set of cases and check for clearances as it goes through the gears.

[Suzukidave]

I didnt need to remove any metal from the gears .. i looked on P.P. http://www.pinkpossum.com/GT750/Transmission/GS750.htm" onclick="window.open(this.href);return false; and that reference was to a GSX output shaft . On page 5 of the data that was put up pictures are still up showing mods needed viewtopic.php?f=5&t=1060&start=60" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;

[garry55]

thanks for that Dave

once I've got the output shaft bearing flange machined, I'll give them a spin in the casings and double-check.

[Suzukidave]

Also important is put the output gear into the top case . I put my cases together to find the gears wouldnt turn .. turns out the larger GS 1st gear contacts the oil splash thats attached to the top case so i needed to cut some of it away http://suzukidave.com/index.php?cmd=ima ... c1MDQyMzIw" onclick="window.open(this.href);return false;

[Suzukidave]

thanks for that Dave

once I've got the output shaft bearing flange machined, I'll give them a spin in the casings and double-check.

Or the bearing machined back as Allan and Richard did .. while the machinist has the shaft have him grind out the end for the oil seal

[garry55]

.. while the machinist has the shaft have him grind out the end for the oil seal

a bit confused here Dave - on reading the article (again!) on the Pink Possum site, I thought it was the input shaft that required machining for the oil seal? And I don't need to do that, as I'm running a dry clutch (hopefully).

[Suzukidave]

For normal GT clutch the input shaft has to be shortened a bit but yep the end of the output shaft on the clutch side has to be machined out to take to oil seal thats on the standard GT output shaft . I just popped the seal out of a stock shaft and put it in the GS shaft . This seal fits into the oil guide that screws on the case on the clutch side to feed oil into the hollow shaft and that oils the gears . If your GS first gear on the output shaft has a sloppy bearing ( like ours did ) you can press the one out of a stock GT gear and put it in the GS gear .

[garry55]

had a look at one of the GT750 output shafts and see what you mean now Dave
on the Possum site it looks like the input shaft that has been machined - my error.

[Alan H]

Have you thought of just putting a GS engine in there where everything fits?
Or graft the GT crank onto the GS gearbox like they used to do on the old Nortons/BSAs/Trumpets etc.
That might be a different project idea.

[tz375]

Both input and output shafts have oil seals on a GT. On the input shaft, the clutch pull rod rides in the seal and on the output shaft, there is an oil collection tray that feeds oil in behind the clutch.

PP has been updated to reflect that.

[Suzukidave]

Oop's i did forget the input shaft has to have the oil seal also for normal GT use but like you posted i guess you will not need the seal for the dry clutch I wonder how they get oil into the input shaft to oil the gear bearings with the dry clutch ?

[garry55]

I was hoping you would tell me

I spoke with Ellis Moore who makes the extended input shafts for the BDK dry-clutch conversion and he confirmed that there are no extra oil ways or holes in the shafts he has made.

I'll look into that a little further down the line.

[Suzukidave]

I suppose it would be possible to tap in a oil supply from the other end ?