Fat Cat 250sx

[atc500x]

Hi guy,here is the result of my work tonight!!! After 1:30 of work check it!!I was supposed to part out this rought 250sx with a bad axle but I finally give her a second life!probably the first one built,I have never see another one anywhere.The differential and the 2 swingarm part are from a suzuki gs650 1981,and I use the front of the SX swingarm.Can wait to take a ride!!!!

[code200k]

looks preety beast..what are you gunaa dofor fenders?

[atc500x]

Front will probably be 250r,rear I don't know,I have a lot of motocross side panel and a nice seat with cutted rear fender

[harryredtrike]

that looks like fun when done.

[dcreel]

Is there a hole in the engine case where the shaft drive comes out of the trans/left side engine case?

[atc500x]

Yes it's a hole,the engine is supposed to be good but I will replace this part,I have a lot of them.Anyway I think the biggest challenge is the rear wheel setup!

[SYKO]

now thats some thought put into that!! a shaft drive missle!! wicked!

[MonroeMike]

I believe that's a first, looking forward to more pics.

[atc500x]

Some picture of the beast on the wheel.

[BAN ONE]

hahaha that is way to cool well at least with the shaft drive you will not have to mess around with chain adjustment and the jackshafts!

[Dirtcrasher]

NICE BUILD!!

I know you've got trikes and skillz but:

Take that counter shaft out while the motor is on the side or thrust washers and parts get lost..... Many guys just pull the 3 bolts and thats the end for most :D

[atc500x]

I know for the counter shaft removal,it's the previous owner that try to remove it :) It's the reason why I paid 50 for the whole bike :)

[atc500x]

Some picture of the beast,more of the plastic work is done,just have to finish and paint! Side cover are from a cr125 85 or 86....not sure.Plastic welded to the 250sx fender!

[Tordeur]

Wow very good work! Now you have a SUPER CAT!
Let see us on video.

[MonroeMike]

That's coming along good.

[Youngrasher]

This is awesome. I'm interested to know what the final speed will be with the different gearing at the back.

[atc500x]

I took a small video of my FATCAT 250sx ,not finished,but can't wait to test it!


http://www.youtube.com/watch?v=siAkb5z5c38

[MonroeMike]

Quite a machine, looks like it rides good.

[atc500x]

Project finished!!!!!!

[BAN ONE]

haha looks great! the new big wheel killer

[taiterator]

Wow!!!!! That thing is awsome!!!! Very nice work

[Swanny224]

haha, you crazy bugger, that's awesome. I love fat cats, but I'd still rather have three wheels.

[bigpimpin]

definitely cool

[matt86200x]

WoW i really want to build one in the worst way with my extra sx bike, but i doubt i have the skills to do it

Awesome job

[350XJEDI]

turned out really nice , good work

[trikes4life]

yeah this is cool as hell.

[three_wheelin45]

lol now thats bada$$!

[H95Shooter]

hey were can i get tracks like that

[atc500x]

they are from a snowblower

[sugarhead]

Very Nice job,very clean.I wish the mfgs would stop producing over priced hi tech junk that no 1 wants or can afford and go back to trikes an fat cats,basics so to speak.KISS less is more,enough is enough w all this p/s bs and efi.Just more trailprotrailprotrailprotrailpro to break and leave your ass stranded in the woods 20 miles out sol w out being able to jiggarig it to get back to camp.Keep it!

[lowranger]

very nice ,I'd also like to make a fat cat out of one of my trikes. how did you connect the drive shaft, and what wheel did you use. and was the suzuki hub the same width as the swing frame?
Thanks Dan.

[Bigred97]

Do you still have the fat cat. If so, how has it held up? Did the drive shaft work without any mods?

[atc500x]

I still have it and never had ANY issue with it.Reliable as the stock 250sx.Drive shaft need modification to fit.

[Vwrick69]

That thing kicks ass!!!!!! I have several SX's and would love to do this.

[PowerModz]

Do you have any pics of how you made up the shaft?

thanks! looks great.

[ride red #1]

Very nice unique build.

[atc500x]

No sorry no picture of the shaft.It's simply the gs and sx shaft welded together with a bushing over it.

[TheRealFatShady]

Is the brake assembly aluminum? How did you weld it to the cable mount you added in the rear? Looks like steel to aluminum?

[atc500x]

Cable mount is steel and welded to the swingarm

[gerhardt]

Nice build! I'm looking at doing the same. I have a question regarding the rear wheel. Did you just use/modify the rear driven hub assembly from the GS650? How'd this work with the SX rear drum brake?

[atc500x]

Basicaly,it's a modified 250sx rear Wheel (removed about 1 inch in the middle),a 250es front hub modified (so I used the 250es drum brake),the gs650 rear end drive on the Wheel,check picture tou can see how it's installed on the rear wheel