XS750 to XS896 big bore

I did have to reoganise the electrical tray under the seat to fit the regulator/rectifier as the loom was shorter. It actually neatened up the bike, just hope the heat is far enough from the CDI unit.
 

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If you're really concerned, you may want to consider drilling a hole into the pan and mounting the regulator on the underside, where it hangs in the breeze.
 
Congrats on the BOTM nomination. I'm working on an XS750 myself. I was wondering how is your electrical box mounted? I can't tell if/where it's welded in there?
 
Hi Jedi
The aluminium tray just sits in the frame, then the seat clamps down on it.
Look forward to seeing your build.
For a bike that was meant to have some design problems. There are certainly quite a few that are still kicking around.
Cheers
 
Thanks for the response. Yeah, mine is definitely a slow build. I don't currently have a garage, but have access to 3d printers and a rather small cnc at the local library.

It was an abandoned project that I bought a few years ago, finally getting to it this year, i hope.

that's what I thought it looked like. aren't you worried about vibration from the tray and seat chipping your paint? I suppose no one will see it under there, but maybe put some rubber between the tray and frame?
 
aren't you worried about vibration from the tray and seat chipping your paint?
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Does not appear to vibrate at all. The loom appears to dampen it.
But now you mention it, it is better to make sure than to rue later!
I have some left over leather that I will glue onto the mating surfaces to protect the paint.
Thanks for pulling me up on that one.
Cheers
Tim
 
I may have to use your hanging box trick, so that I can get the bike up and running. I like the idea. I don't have leather, but can order this:
https://www.amazon.com/LASCO-02-1048E-Rubber-6-Inches-16-Inch/dp/B0074II2K6/ref=sr_1_3?s=industrial&ie=UTF8&qid=1522717697&sr=1-3&keywords=rubber&dpID=411FI2ZRWUL&preST=_SY300_QL70_&dpSrc=srch

Not sure if amazon has made it down under, but I was in Perth for three months in 2007 and remember everything I took for granted was difficult to get at a reasonable price.

I kind of flipped through all of the pages and pics. I admittedly need to read all of them. can you take more pics of the battery tray and mount? that's probably going to be my biggest issue.
 
the battery tray and mount? that's probably going to be my biggest issue.
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The first issue that you must decide is what battery you are going to use. The battery has to be very compact to fit down behind the gearbox.
The mount was a piece of 20mm X 4mm mild steel strip with 2 holes tapped with M6 threads. That was then welded to the lowest cross tube just above the swingarm pivot.
I did change the solenoid mount also, so the solenoid terminals were pointing up to improve access. I will try to take some photos on the weekend.
 
I'm debating whether to do kick start only or not.
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Hopefully someone more knowledgeable than I can confirm, but I think with the generator system on the XS750 you are going to need to have a battery of some sort. It does not have a magneto where you can get away with no battery and possibly just have a capacitor.
 
XS750AU said:
Hopefully someone more knowledgeable than I can confirm, but I think with the generator system on the XS750 you are going to need to have a battery of some sort. It does not have a magneto where you can get away with no battery and possibly just have a capacitor.
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Yes, the field coil system needs something more substantial than a capacitor to work ok. If running kick only you can fit a much smaller battery though.
 
yeah, smaller battery would be great. just worried about being stuck without being able to start it. things to consider.
 
What datadavid said, BUT allegedly some XJ600s have got a permanently excited alternator setup that is a more or less straight fit to the ol' triple. Which would mean, you could actually do it like that. It was posted on the German Triple-Forum 6 years ago, but the thread-starter won't respond to any PMs and all the pictures have been lost with photo-f*ck-it. :-\

If size is a consideration, I have started my triple with a 7AH LiFePo-battery reliably multiple times. (I have one sitting on the shelve from my turbo-build... it's easily strong enough to start the bike six times in a row* and it's about the size of two cigarette packs.)

*It is mandatory that you take the starter motor apart and clean it though, as you're usually the first one to do that ever since it left Japan many years ago.
 
smaller battery would be great. just worried about being stuck
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My XS750 is easier to start by kicking! ;D
The XS896 is much easier to start with the electric leg.
Guess you should see how easy it is to start by kicking first before you lock yourself in. ;)
 
XS750AU said:
My XS750 is easier to start by kicking! ;D
The XS896 is much easier to start with the electric leg.
Guess you should see how easy it is to start by kicking first before you lock yourself in. ;)
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My 896 starts easiest if kicked along with the starter as a help
 
Wow wow wow! ;D ;D ;D

Perfect day for riding, sunny and 19C. So I went online and paid for an unregistered vehicle permit to take her out and break the engine in. Ride it like it was stolen and did not sit at a constant speed. Accelerate and decelerate for about an hours riding.

Why Yamaha waited 40 years to make a 900 triple I cannot understand. The 896 is so much better than the 750. It has huge torque, smooth as silk and just wants to rev. It is so much fun compared to the very good but much slower 750. The only problem appears to be that it is now running out of gears, I kept looking for a 6th gear. ;D
The jetting on the carbies appears to be perfect. Needs the choke to start cold and absolutely no flat spots as it screams out to 9K when hot. Oil cooler worked like a treat. It is a little loud in built up areas, and certainly gets heads turning.
The first ride went well beyond expectation.

https://www.youtube.com/watch?v=RLpOrNAFHNY
 

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Thats a beauty, i agree about the power delivery of the 896, and the gearing. Iirc the xs11 middle drive has a different end ratio, dont recall if it would lower the revs or not, but it would be nice with a taller gearing.
 
Iirc the xs11 middle drive has a different end ratio, dont recall if it would lower the revs or not, but it would be nice with a taller gearing.
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Looks like XS11 riders are using XS750-2D or XS850SG middle gears to get longer legs. Might have to start looking. The only problem is that I think its a complete engine tear down. :(
 
XS750AU said:
Looks like XS11 riders are using XS750-2D or XS850SG middle gears to get longer legs. Might have to start looking. The only problem is that I think its a complete engine tear down. :(
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Yes, i dont recall if the outgoing gearbox splines are different, in that case one might have to switch out some parts there as well.
Edit: i have 2 middle drives lying around, if you can find info on how to identify them you might get lucky!
 
Chaps, it's the final-drive ratio that is different. Middle gearbox is just bolted onto the cases and can be taken off quite easily. (Not even engine out, if I remember correctly.)

Unfortunately for you: Thx XS11 runs a shorter gearing than the 750/850. I have the figure of 7 percent in mind, but I could be wrong.
 
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