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Old 06-16-2009, 03:28 PM   #166
JR Greenhorn
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Location: Litchfield, MN
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Quote:
Originally Posted by FloridaSteve
There's a danger in any build of going so far that the "character" of the ride is lost. You could easily over-modernized (and over spend) on a bike like this and end up with a completely modernized ride. But then what's the point. You might as well just buy an XR or a DR or... If you're looking for an enduro with monster grunt and serious "character"...
Those were almost my exact thoughts while reading the prior post.


If you modernize the chassis too much, you'll end up magnifying the shortcomings of the XS engine. You'd have a modern bike with this big hulking lump of an engine that makes nice snappy power, but feels out-of-place.

In the right chassis, a dual sport XS should have a feel that evokes the stock bike and perhaps also a flat-tracker to some degree, but be capable enough that you don't have to make excuses for it on a dual sport ride. Suspension should be modern enough as to not punish the rider, but not too modern. The bike should feel like a throwback, but not too much so. If done right, the vibration and valvetrain clatter will be part of the character.


It's a pretty tall engine anyway, so you'd have to be careful what you selected for a donor chassis in the case of a transplant (if you must). Low ground clearance is a bit of a liability off-road, but in this case I think the long/low feel vs. other off-road or ADV bikes is key to this bike's feel and identity.
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Old 06-17-2009, 12:26 PM   #167
sonic reducer
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kinda like this maybe? very cool

http://www.650motorcycles.com/MichaelWaller.html

that guy turned it into more of a street machine but interesting to see that the XS motor fits in the XT frame which i would imagine is lighter.
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Old 06-17-2009, 01:29 PM   #168
FloridaSteve
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Nice....




I think this one is really close too...

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Old 08-05-2009, 02:51 PM   #169
seniorburro
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xs 650 engine as a brake

1980 xs 650 ...let off the gas...it does NOT slow the bike down, much.
Question is...how to do?
Is it possible to achieve with minor mods: carbs,pipes ...?
Do the "Rephsed" engines change this enough to justfy the expense?
Stock it has the ground clearance for secondary Montana Hiways but end up using the brakes more than not. Seems wrong.
Tires...which ones give the front end bite on gravel?

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Old 08-15-2009, 02:01 PM   #170
UH60A
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Dual Sport XS-650, Montana machine

I didn't know that from a slight thought two hours ago I would now have a serious jones for a 277 degree, 750cc, semi-long travel, dual sport yamaha twin.
I do now. Montana back roads await.
I'm thinkn:
*XS750 w/277 crank and some modern carbs
*XS650 frame with Works Performance lay down shocks calibrated for project 9" travel + -
*50mm marzoch forks mod'd down to 10" travel (Had them on a KTM 300)
*Fuel - ? want 4 gal minimum and not fat, like the acerbis I have on my YZ
*seat - comfy but not fat
*wheels?
*hubs?
*Set of cool baja HD's
Thoughts?
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Old 08-15-2009, 04:36 PM   #171
FloridaSteve
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Quote:
Originally Posted by UH60A
I didn't know that from a slight thought two hours ago I would now have a serious jones for a 277 degree, 750cc, semi-long travel, dual sport yamaha twin.
I do now. Montana back roads await.
I'm thinkn:
*XS750 w/277 crank and some modern carbs
*XS650 frame with Works Performance lay down shocks calibrated for project 9" travel + -
*50mm marzoch forks mod'd down to 10" travel (Had them on a KTM 300)
*Fuel - ? want 4 gal minimum and not fat, like the acerbis I have on my YZ
*seat - comfy but not fat
*wheels?
*hubs?
*Set of cool baja HD's
Thoughts?
Thoughts? Yeah i wish I lived in Montana and not Florida-sandbox-flatistan so i could build exactly the bike you described and ride the wheels off of it on some nice back roads. I say Go for it!

An by all means keep us posted!
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Old 08-15-2009, 07:22 PM   #172
bbjsw10
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Actually doing this myself.

I just happened to see this thread tonight. I started one a couple days ago. I am building one up slowly, even slower now just had knee surgery 2 days ago. That is gonna eat my money for a little while, and hurts like hell too.

Link to mine. http://www.advrider.com/forums/showthread.php?t=495527



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Old 08-16-2009, 08:16 PM   #173
Pezz_gs
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I have a XS650 motor and a 270 degree crank pin.

I have been offered a TX500 which does not run.

Question is will the XS650 motor fit in the TX500 chassis.

I will be fitting a XR450 forks and swing arm, which I already have

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XR460/4 - http://www.advrider.com/forums/showthread.php?t=497905


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Old 08-17-2009, 05:28 AM   #174
rw4x4van
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Another option from a guy in OZ, using a '77 Yamaha YZ frame





and one of my favorites....using a Champion frame


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'07 KTM 300 XCW

rw4x4van screwed with this post 01-13-2010 at 09:13 AM
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Old 08-19-2009, 05:44 PM   #175
redfishguide
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Finally making a little head way with my dual sport XS project. I had to abandon my mono shock swing arm after wasting too much time trying to make it work. While the suspension worked fine I could not get the front and back wheels to line up. The DR swing arm I was using appears to be off set and I ran out of material to remove to get everything lined up.

Sooo my latest version uses a swing arm donored by an SR 500 though I believe it is aftermarket. Its aluminum and about an inch longer then stock XS. Fitted with 15 inch shocks I'm getting 6 inches of rear wheel travel. By moving the top shock mounts forward I can up the travel to a bit over 7 inches. Lo and behold now everything is lined up including the sprockets.

I finally can see some light at the end of this tunnel so now maybe I'll finally make some real progress. And btw the entire package is quite a bit lighter then the mono shock set up and considerably lighter then the XS stock gear. I had the swing arm machined so it still accepts the DR axle rear wheel and brake.











Now maybe I can get this thing running and test everything out. I have a newly arrived Boyer iggy and an engine just waiting to go in. 520 cs sprockets also just arrived.

Jack

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Old 08-19-2009, 10:05 PM   #176
FloridaSteve
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Oh hell yes! Keep em coming!
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Old 08-22-2009, 03:05 PM   #177
jamesgs4
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Quote:
Originally Posted by redfishguide
Finally making a little head way with my dual sport XS project. I had to abandon my mono shock swing arm after wasting too much time trying to make it work. While the suspension worked fine I could not get the front and back wheels to line up. The DR swing arm I was using appears to be off set and I ran out of material to remove to get everything lined up.

Sooo my latest version uses a swing arm donored by an SR 500 though I believe it is aftermarket. Its aluminum and about an inch longer then stock XS. Fitted with 15 inch shocks I'm getting 6 inches of rear wheel travel. By moving the top shock mounts forward I can up the travel to a bit over 7 inches. Lo and behold now everything is lined up including the sprockets.

I finally can see some light at the end of this tunnel so now maybe I'll finally make some real progress. And btw the entire package is quite a bit lighter then the mono shock set up and considerably lighter then the XS stock gear. I had the swing arm machined so it still accepts the DR axle rear wheel and brake.











Now maybe I can get this thing running and test everything out. I have a newly arrived Boyer iggy and an engine just waiting to go in. 520 cs sprockets also just arrived.

Jack

heres a link to some parts you may be interested in. the guy selling is a good fabricator and a pretty rad bike builder too.
http://xs650temp.proboards.com/index...y&thread=13341
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Old 08-22-2009, 05:52 PM   #178
redfishguide
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Thanks for the link. That swing arm does look interesting but I believe I am past that now.

Jack



Quote:
Originally Posted by jamesgs4
heres a link to some parts you may be interested in. the guy selling is a good fabricator and a pretty rad bike builder too.
http://xs650temp.proboards.com/index...y&thread=13341
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Old 08-23-2009, 01:14 PM   #179
Cathalp
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XS650 Special

The Special frames already have the shock mounting points moved forward.
Nice build.
Good luck.
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Old 01-11-2010, 08:29 PM   #180
FloridaSteve
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found this online today. no extra info but very nice build.

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