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Author Topic: 78 XS 750...special to tracker/scrambler  (Read 4839 times)

Offline Psycrow

  • Posts: 89
Re: 78 XS 750...special to tracker/scrambler
« Reply #20 on: Sep 09, 2016, 09:16:28 »
Oh and BTW just in case any of you guys working on XS's hasn't seen this thread on what tire size works over on Yamaha Tripples here it is.
http://www.yamaha-triples.org/forums/thread-view.asp?tid=16390

Psy

Offline JadusMotorcycleParts

  • DTT SUPPORTER
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  • Posts: 791
    • Jadus Motorcycle Parts
Re: 78 XS 750...special to tracker/scrambler
« Reply #21 on: Sep 09, 2016, 12:14:10 »
Wow, sweet link with all the tyres that fit!  This would have been helpful when I was deciding  :o

Yeah sure, heres a link to a bit of a write up about the bike: 

http://www.jadusmotorcycleparts.com/jadusbikes

Offline XS750AU

  • Posts: 329
Re: 78 XS 750...special to tracker/scrambler
« Reply #22 on: Sep 09, 2016, 19:38:38 »
Hi Guys
The only concern I have is that the data is for road tyres and the specified dimensions are on the carcus  not the tread. 120/80 - 18 appears to be the most widely available size, but as you guys have found it only just fits and we are wanting scrambler tyres with a more aggressive tread. Just a bit worried that the outside knobs could cause a problem on the 120s?
I am also running Avon Roadriders M23s on my 750 but I did go for the XS spec 3.25" front and 4.00" rear - great tyres.
The Avon Trailrider M53 looks a great option but the front only goes down to 100/90 with rears at 110/80 or 120/80. Hopefully if a 120 M23 fits then a 120 M53 will also fit.
The other option I was getting interested in is the Pirelli Scorpion AT90, the 120/80 -18 is widely available but even though they list a 90/90 - 19 front, I cannot locate one anywhere????
And a miss-match of Dunlop D604 120/80 – 18 & Bridgestone TW101 100/90 - 19
Guess it is a first world problem though!!!!
Watching with interest as to how we all go.
Cheers
Tim
“Engineering is the art of being approximately right rather than exactly wrong.”

Yamaha XS750-2D
Yamaha XS896
Husaberg FE550
Yamaha TT250
Yamaha IT200N

Offline Psycrow

  • Posts: 89
Re: 78 XS 750...special to tracker/scrambler
« Reply #23 on: Sep 10, 2016, 08:55:57 »
Yes the knobbies are a concern I think ill risk the 120/80 18 and if it rubbs ill end up grinding the swinger a little and/or shaving the tire blocks slighlt... Im hoping the amout of material that needs removed will be minimal.. I dont mind massaging a little but I dont want to compromise safety. It will be bridge ill cross when i have to..... for now I HAVE to get this seat done and the front brakes sorted... arg..i need a couple of uninterrupted days....

Psy

Sent from my SM-G903W using Tapatalk


Offline XS750AU

  • Posts: 329
Re: 78 XS 750...special to tracker/scrambler
« Reply #24 on: Sep 12, 2016, 05:29:56 »
Psy
Don't think I would grind the swingarm. Hit with a hammer would be OK, but removing metal will weaken it. I am looking at a second hand Pirelli Scorpion MT90 A/T 120/80-18 to check clearances. Then measure the clearance between drive shaft and swing arm wall. Make up a dolly so I can hammer down the wall to a fixed point controlled by the dolly. That's the theory anyway.
Whatever you do don't grind the swingarm!
Cheers
Tim
“Engineering is the art of being approximately right rather than exactly wrong.”

Yamaha XS750-2D
Yamaha XS896
Husaberg FE550
Yamaha TT250
Yamaha IT200N

Offline Psycrow

  • Posts: 89
Re: 78 XS 750...special to tracker/scrambler
« Reply #25 on: Sep 12, 2016, 18:06:21 »
There is a local guy who has about 5 750's and 850's in parts and hes sold/given me some parts along the way to help with this build. He says the 850 swingarms will bolt up and are wider he also says  there are several from other Yamaha models of the same aera that will work with some minor modification ie: some virago and Maxim models... I wasn't anywhere near that stage last time I talked to him so I didnt get details but I may go back and pick his brain a little bit. I wouldnt grind on the swing arm without some additional bracing... im a long way from that at this point a
in any case...for now i just want to get it going down the road under its own power ..

Psy

Sent from my SM-G903W using Tapatalk


Offline Psycrow

  • Posts: 89
Re: 78 XS 750...special to tracker/scrambler
« Reply #26 on: Oct 17, 2016, 00:34:18 »
A few updates. Finished the seat and its now mounted. Didn't turn out the way I wanted but fo never doing anything like this before Im happy enough with it for now. front brakes are bled and working now after a rebuild/mod on a brand new cheap chinese ebay master... signal flasher sorted homemade right side cover fitted with army surplus tool bag... ( it is not in the way at all) new Biltwell grips on and crappy mirrors on for inspection and until I decide what to do there. Moded petcocks and fixed leaks. Took it for a little shake down cruise it ran OK sounds nice but now begins the task of rejetting and fine tuning the carbs. Also might have been a miss towards the end of the ride so I will have to retest the coils when they are warm.

Psy


Sent from my SM-G903W using Tapatalk


Offline XS750AU

  • Posts: 329
Re: 78 XS 750...special to tracker/scrambler
« Reply #27 on: Oct 17, 2016, 04:12:04 »
Great to see her up and running. I wasted a lot of time and effort tuning jets by not sorting the air leaks first, on the carbi rubber mounts and throttle shaft seals. If you take the rubber boots off and squeeze them - if there are any visible cracks then in the bin. Check the throttle shaft seals - they should be soft, mine were hard as a rock.
Any missing or back firing can be caused by a lean mixture = pods + possible air leaks.
Any progress on new tires?
Cheers
Tim
“Engineering is the art of being approximately right rather than exactly wrong.”

Yamaha XS750-2D
Yamaha XS896
Husaberg FE550
Yamaha TT250
Yamaha IT200N

Offline NoRiders

  • Posts: 626
Re: 78 XS 750...special to tracker/scrambler
« Reply #28 on: Oct 17, 2016, 06:37:17 »
A few updates. .... homemade right side cover fitted with army surplus tool bag... "

Psy


Sent from my SM-G903W using Tapatalk

"you will find that is about the worst place you could put a bag ,there right in your way,unless it is just a sidecover painted like a bag you will always know its there anoyingly it even is a hazxard there and takes away control of the bike
what the hell is good about it ?the location?
it even looks ridiculous having them in your way
the normal location for the saddlebags/luggage bags is a great solution for such rertardedness of mounting them smack dab in your way
you know what it looks like ? like some queer interior decorator who knows zip even how to shift gears, dressed up a motorcycle
not that i have anything against anybody but it looks that fucked up and is
if you tucked them in flush so you wouldn't constantly feel them right IN THE WAY where your leg wants to ber and there was no buckles to catch a pant cuff or shoelace on, that would be different but having them bulked out right in your way is one of the stupidest deals i have seen yet
fcking snap out of it dudes,before you venture into public with the worst bag location ever concieved"

Offline datadavid

  • Posts: 1149
Re: 78 XS 750...special to tracker/scrambler
« Reply #29 on: Oct 17, 2016, 08:49:40 »
"you will find that is about the worst place you could put a bag ,there right in your way,unless it is just a sidecover painted like a bag you will always know its there anoyingly it even is a hazxard there and takes away control of the bike
what the hell is good about it ?the location?
it even looks ridiculous having them in your way
the normal location for the saddlebags/luggage bags is a great solution for such rertardedness of mounting them smack dab in your way
you know what it looks like ? like some queer interior decorator who knows zip even how to shift gears, dressed up a motorcycle
not that i have anything against anybody but it looks that fucked up and is
if you tucked them in flush so you wouldn't constantly feel them right IN THE WAY where your leg wants to ber and there was no buckles to catch a pant cuff or shoelace on, that would be different but having them bulked out right in your way is one of the stupidest deals i have seen yet
fcking snap out of it dudes,before you venture into public with the worst bag location ever concieved"
Rolling on floor laffin my ass off. Not really but funny tho :D and your right.