ATC 600X ... '87 XR 600 Conversion Project

[cr480r]

The only problem(s) with the way I did it were that the welds can potentially break, the sprocket was slightly tacoed from the welding head (though not bad), and to change the sprocket I have to remove the entire axle.
-Jed

You can always change it later... The bike looks good... I really dig the heated seat...

[sandpuppi101]

Thanx for the pic's Jeddy,I can see that we went in a whole different direction on the bike design..I like your design also,and it's proven.The biggest rear sprocket I could find was a 40tooth rear,checking on a cross reference ,but that is a long shot..I like the design of how you did the rearsprocket,my issue is time..I don't have enough of it,I will try some other angles of gearing ,but I think I will be having it modded after TF..I only have 14 days to finish it,gonna be close.Does that motor get hot on ya ,and is that an xl 100mm or a xr 97 mm Bore .It looks xr.

[sandpuppi101]

Well a breakthrew ,The Frickin motor is done !!! Cutting it close but I know it will be good to go,Like Derrick ,I think I will keep everyone is suspense until TF on the finished product but it's gonna be sweeeeeet if all goes well.. Frame is 100% and motor goes in tomorrow,Wish me luck !!

[84honda200s]

good luck man. that might give dales e.t. a run . post some pics after tf i cant make it to tf sadly.

[Kilborg]

Cool build. I recently picked up a Xr600r and have been putting alot of miles on it...Great bike which I am growing more and more fond of daily. Would make for a GREAT trike motor.

Sadly they feel quite tame compared to the new high zoot 450 classes, but theres nothing like a big Xr600 to torque around on the trails with.

[BigGreenMachine]

Can you say wheelie machine. There are endless upgrades for the XR motor as well and tons of ebay support.

[sandpuppi101]

Well I have too give a report,I am running a 13/41 gearing and it's fun but I think the 450's are gonna have ther hand's full .. and the machine looks sick!!!!!!!!!!!!!!!!

[jeddy]

Yeah, I have a CRF450 and it just pulls a lot harder than my 600. But it's a bike also, so that makes a big difference. The 600X is fun to just lay on the throttle and look behind you as a wall of sand erupts from the dunes. It's also nice to be able to ride wheelies anywhere you want; up dunes, across dunes, down dunes, it doesn't matter. But I'd like to sell mine and build a 500r trike just to get the snap of the two stroke, which is why I listed it for sale.

To answer your questions sandpuppi, it's an XR engine. I think it's bored to a 98.0, I know I didn't get quite a big enough piston to clean out all the scratches (I was quite pissed but couldn't return it and wasn't going to spend the money on another one), so it smokes a little. The motor does get warm, but it doesn't seem to mind. My right leg gets warm from the pipe, but I imagine if I wrapped the header it would help. If you sit too far back on the seat you get some good heat off the silencer also. I would like to put an oil cooler on it. They have some kits for an XR400 that are supposed to work, but they look pretty small. I was thinking more along the lines of a 400ex cooler under the headlights. Also, what you said about time and your sprocket, mine was the same way. I was actually going to machine out an adapter that would bolt together, but I didn't have enough time (it would've required a 7" OD blank, which even on a CNC takes a while to turn down, plus it would've required a lot of live tooling on the lathe).

Let me know how it goes,
-Jed

[BigGreenMachine]

Time to unveil this beast, some pics man!!

[sandpuppi101]

Well as promised I got her altogether just in the nick of time before trikefest and I want to once again thank Billy and Jason Hall for giving me pointers along the way.I went for a more conventional look on the machine,the frt rake was 3degrees off when all was said and done,really the only pic's I have so far are from TF,but I see them scattered on the pic's from down there.The machine had a 2 1/2 inch stretch on the rear ,so with the rake and the stretch,it actually was a comfortable ride .The power was unbelievable and I still wanna work on the gearing,not much but just a little.I will post up some more detailed pic's of the build ,but kinda look's like a 350X on roid's if ya ask me..And yeah,it's pretty fast.

[viper]

ya that is a strong running bike

[3Wheelers4Life]

cool, i like the color combo, white fenders with a blue seat with the 87 tank stickers, looks good. get better pics please.

[Bigbore]

Change out that muffler and you'll see that bike pull a lot harder!

[sandpuppi101]

Pull alot harder BigBore ?? Nah,that machine pulls real hard .I did take out the rear baffle down at TF for the drag's and I was'nt dissapointed one bit.Literaly in 4th gear wide open the wheel was floating off the ground,that thing is a monster.And the way the machine was balanced out ,I would'nt have done anything different.When the 2nd carb kicked in it was an insane ride.When it ran against big bore 2 strokers,all I could do was smile,it did'nt alway's win ,but it was right there everytime.Maybe someone has video of this machine in action.Take a look at the pic against a tiger 500 in the drags,you can see it pull's pretty hard.

[sandpuppi101]

I recieved the last of the item's this past week and finished off the 600X ,and the final touch was my new custom '85 style 600X seat from the Mosh's.When I put the seat on and took a step back at the machine to check it out ,it hit me as to how many piece's we're on this machine that came from people in the 3 wheeled community alone,over 15,people I have got to know better along the way and people who love what they individually do.Hat's off to you and ,Thank's for that.
I finished off the build with a little more headwork on the exhaust port and put on some OEM 350X boot's on the fork's and finally the seat.Would you guy's have done it differentally?Would I have done it differentaly",yeah probably,but I can honestly say that I am satisfied with the machine as is,and it's done and time to move on.Just gotta build a better one for next year !!Can't wait to icerace!!