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View Full Version : Dirt bike bobber plans. What do you guys think?



tonyz400
01-07-2011, 3:56 AM
Brand new to the site so i'm sure none of you guys have heard of me before. For the past few months I have been planning to do a dirtbike bobber project until my VW trike project is done. I have been searching craigslist for an older 70's bike to chop up, when here I forgot I have a 1972 suzuki TS 185 in the barn. I plan on making this a clean bob. no rust or crappy welds here. I did a before and after photoshop to show my plans. Basically I wanna cut the sub frame off, weld strut tubes in, lower the stock forks, put a meaty tire out back, drag bars or clamp ons, get rid of the oil tank and pre mix instead, and install a small tail light, fog head light inside a vintage style number plate up front and vintage style side plates. The tank is already blue and white so there shouldn't be much painting at all to do. Thanx guys I look forward to your comments.

SilverBurr
01-07-2011, 9:12 AM
If it were me... I would keep a cut down version of the rear fender, but thats just me. :) Similiar to this.

http://www.xs650chopper.com/wp-content/uploads/2008/12/boylecommssr50-724727.jpg

Sighless
01-07-2011, 10:08 AM
DO IT! I've seen a lot of "brat-trackers" and I think they're wicked. I'm starting to look for an enduro for a project for my son and myself. Keep us posted.

Here is one of my favorite bikes.
http://i610.photobucket.com/albums/tt188/Zooker89/Sideview041710.jpg
http://www.chopcult.com/forum/showthread.php?t=2629

midnight340
01-09-2011, 10:20 PM
My version.... XL350 w/ 10.5 piston, Megacycle cam, Mikuni, etc. Pulled front geometry in to 27 degrees, added 1.5" to swing. Just getting it broken in, fun bike.

Salty
01-10-2011, 12:52 AM
goddamn all these flat/brat trackers are becoming more and more appealling to me... got me on the lookout for a 70's enduro.

keep the build posts coming por favor.

tonyz400
01-10-2011, 7:45 AM
My version.... XL350 w/ 10.5 piston, Megacycle cam, Mikuni, etc. Pulled front geometry in to 27 degrees, added 1.5" to swing. Just getting it broken in, fun bike.

Yeah I was looking through google yesterday and stumbled upon your bike. very nice build. How did you extend the swingarm and still keep it strong and clean looking?

midnight340
01-10-2011, 1:05 PM
Yeah I was looking through google yesterday and stumbled upon your bike. very nice build. How did you extend the swingarm and still keep it strong and clean looking?

I cut the swingarm in the straightest section, located tubing of two sizes: one that would slip tightly inside my swingarm, one that was the same diameter as the stock swing arm.

I then cut the smaller tubing a couple of inches longer than my 2.5"extension plans (about 4-4 1/2"), then slipped a 2.5" piece of the larger tubing onto the center and tack welded it. Once I had this done for both sides, I slipped the new double piece into both ends of the original swingarm. Carefully align everything. I then welded it up properly. Make sure you leave a slight gap, so your weld penetrates into the inner tubing as well as welding the outer tubing together.

Very strong, very secure.

otto138
01-10-2011, 4:03 PM
If it were me... I would keep a cut down version of the rear fender, but thats just me. :) Similiar to this.

http://www.xs650chopper.com/wp-content/uploads/2008/12/boylecommssr50-724727.jpg

+1 unless you like getting hit with crap on the back. Short rear fender will keep the dirt off.

speedindoug25
01-11-2011, 6:52 PM
http://www.chopcult.com/forum/showthread.php?t=7751

This chop is fantastic

tonyz400
01-12-2011, 11:20 AM
yeah I spent a few days doing al I could to find dirt bike builds on here and this was one of the few ones I could find. I really like this one alot.

KsDtoday
01-12-2011, 1:34 PM
Ts250 I did a looooong time ago. back in 2000 or 2001.

tonyz400
01-12-2011, 10:56 PM
how did the motor run? It looks like you don't have an expansion chamber on the pipe.

tonyz400
01-12-2011, 11:02 PM
this is the bike I saw that really made me wanna do this. I have only found one picture of it though. I wish I could find a few more just to look at. I did the photoshop file on page one because there where a few things I would change from this bike but not much.

KsDtoday
01-14-2011, 9:47 AM
how did the motor run? It looks like you don't have an expansion chamber on the pipe.

Like a beast! Popped wheelies and did crazy burnouts!

tonyz400
01-14-2011, 5:05 PM
how though? was it just a straight pipe? Two stokes tend to need that expansion chamber in order to recycle some exhaust pressure back into the cylinder. It doesn't sound like it would work right.:confused:

Psychophilly666
01-15-2011, 10:13 AM
Half Fast Chicago did a really bad ass one.

http://www.halffastchicago.com/forum/index.php?topic=173.msg2824#msg2824

ob1
07-06-2011, 2:59 PM
im looking to do something similar with a honda xl 350 that i just picked up
here are some pix
i always wanted a bobber and im also a dirt biker so i figured since ive never seen one in person id go ahead and do a dirtbike bobber
the photo copy cut up is how i do my photoshop since im not computer savy

krampus
07-07-2011, 11:42 PM
First bike I've ever owned and I'm currently handling business with it... my Honda 185. Go all out...

NeoDutch
07-08-2011, 1:31 AM
Restore it, sell it, and buy a real bike.

jamesgs4
07-08-2011, 3:24 AM
build it and have fun with it.

2kvert
07-22-2011, 6:42 PM
WOW! this is the idea I've had in my head for years until I saw pawn stars do it then stumbled on this site I thought it was an original idea
I am definately inspired now. I hits find me an old enduring like the one I grew up with

Sent from my SAMSUNG-SGH-I897 using Tapatalk

Steve97tj
02-13-2012, 4:15 PM
I've been thinking up of something like this just to get my hands dirty and see what i can come up with. I've got an older honda xr80 i thought about chopping up (would be my first custom bike) or going with something like an xl250 or something. If i was to build the 80 it would be just to put around on but i'd probably ride the bigger one on the road. any thoughts? Anyone else done something like this?

Pendulum
02-13-2012, 6:14 PM
A few years back I had a Yamaha 80 and we decided to bob it while I was working on my XS750 triple. Ended up with no rear fender, everything flat black, etc. Hated riding that thing without the fender. My shirt always ended up muddy. Keep the fender if you're rockin' knobby tires or going in the dirt.

redbaron
02-13-2012, 6:30 PM
buddy of mine built this
http://a7.sphotos.ak.fbcdn.net/hphotos-ak-ash4/216130_1718185956522_1294455136_31521208_2388061_n .jpg
http://sphotos.xx.fbcdn.net/hphotos-snc6/216959_1718186756542_1294455136_31521210_3608423_n .jpg
http://sphotos.xx.fbcdn.net/hphotos-snc6/226791_1752476493764_1294455136_31566373_8002459_n .jpg

Sighless
02-13-2012, 7:18 PM
buddy of mine built this
http://a7.sphotos.ak.fbcdn.net/hphotos-ak-ash4/216130_1718185956522_1294455136_31521208_2388061_n .jpg
http://sphotos.xx.fbcdn.net/hphotos-snc6/216959_1718186756542_1294455136_31521210_3608423_n .jpg
http://sphotos.xx.fbcdn.net/hphotos-snc6/226791_1752476493764_1294455136_31566373_8002459_n .jpg

Holy shit that is wicked!

redbaron
02-13-2012, 7:21 PM
yeah he builds some pretty sweet stuff. definitely stoked on that one.

poonslammer
02-13-2012, 7:47 PM
i just came

Steve97tj
02-13-2012, 9:26 PM
I keep thinking i may do it to the 80 just because i have it and to get my feet wet with it all. I'm a welder by trade and have always been into offroad (have a built TJ) but always wanted something on 2 wheels. Bikes and 86 xr80 so i'd probably find a different tank and rear fender just to keep the ish off me.

tonyz400
05-17-2012, 9:33 AM
Sorry I haven't been on this site in a while but I have not done the build yet. Instead I bought a 1993 XR600r to supermoto. I still wanna do a build like this but lately I went home to ohio and rode the 185 to find I am too fat and the forks bottom out and it doesn't really top out at a speed that I'd feel safe riding it on the road. Plus mine is in near mint condition so my new plan is to find a less clean TS250 or 400 and do the bob to that. I had a dream about making an orange dirtbike bobber last night and sparked my interest all over again lol.

Comb2
05-17-2012, 11:16 AM
Went from
http://i793.photobucket.com/albums/yy216/COMB2/CB5501.jpg

To
http://i793.photobucket.com/albums/yy216/COMB2/DONE.jpg

tonyz400
05-17-2012, 11:29 AM
Went from
http://i793.photobucket.com/albums/yy216/COMB2/CB5501.jpg

To
http://i793.photobucket.com/albums/yy216/COMB2/DONE.jpg


This is awesome! What kinda Honda was that? I just love that nasty look with the meaty tires and I wanted to do the fuel gauge tube on the tank like that too. Great inspiration man. Very nice. Give more details on what you changed.

ThePete
05-17-2012, 12:13 PM
I want to do something similar with my son when he's old enough. I figure do a 250cc+ enduro so it can be titled on the street, then get an old car we can work on till he graduates high school so I can give it to him as a grad present.


Sent from your prison purse.