KZ Rat Project - Chicagoland Sportbikes
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post #1 of 22 (permalink) Old 03-27-2012, 10:15 PM Thread Starter
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Talking KZ Rat Project

I haven't posted in here in quite a while. Probably since I had an R6, and that's a distant memory.

Anyways...

After not owning a bike for almost 2 years, I started to get the urge to ride again. I remembered a cousin of mine had given my brother and I an old bike to try to fix. If we could fix it, we could have it. I didn't live with my brother, and after he failed to bring it back to life, it sat in a barn for 2 years. Last spring, I decided it was my turn to try. So we went and picked it up, and brought it back to my house. She was in rough shape:





After fiddling with it for a while, I couldn't get it to run either, so I almost gave up. I found a retired bike mechanic not far from me, so I hauled it out there, and asked for some help. I got it back a little while later, and it ran just fine!

One problem: The bike was older than me, and it looked like it! No style, no class, no fun. I had to do something about it, so I just started chopping it up.

A few hours with the saw-zall, grinder, welder, wire strippers, scotch 33, new handlebars, seat, air filters:



That's how I rode it all last year.

Spring came on fast this year, so I took the bike for one quick ride, and decided that I needed something different. Something had to change. I needed a new direction. Something totally different.

I thought about doing a hardtail. But that has been done, and there are better bikes to do that with, anyways.

I thought about doing a cafe type bike. I thought about that quite a bit. I almost ordered a bunch of parts and went that route.

Then, at the last minute, I scrapped that, and found inspiration elsewhere. All of a sudden, I was on a mission. 20 minutes later, I had a couple orders placed, and parts were on the way!

They came in on Friday, and all I could think about that whole day was getting home to get working on my bike. I was up until 3 saturday morning working on it, and then again from 11-3 saturday afternoon, but I had to quit to celebrate that drinking holiday.
Progress:



Sunday I cleaned up the garage, and all that week, I spent an hour or two each night fiddling with it. The next weekend came, and I spent more time in the garage finishing it up. Most of the structural stuff had already been done the first weekend, but I needed to re-think the suspension, since my first attempt failed miserably. I was able to squeeze in some hours each day, and even had the GF sitting in the garage watching me work for a little while.

Monday after work, I put some pieces back on, and took a few photos for some people that were wondering what had become of that old bike. Tonight after work, I changed the oil, cleaned the carbs again, replaced the fuel filter, and filled up the battery (it was bone dry! no wonder it wouldn't hold a charge!).


Mechanically, she's done. I need to take a dremel tool and buff some of the corners and clean up some weld spatter still. I also still have to think of something for the rear cowl. I have an idea, but I'll leave that for a saturday when I can devote an entire afternoon to it.

Anyways, you're probably all here for the pics, so here you go:








Basically, I rebuilt the entire rear subframe. I cut out all the supports, and just left the top rails. I cut those about halfway through the weld where they join the frame, and bent the tubing up and in, then re-welded it. I used old tubing for all the supports, and the rear section was just plain steel tubing from Home-Depot. The battery box is just 22ga steel, and the igniter, regulator, and other electical parts are riveted on, and covered with thin aluminum. The shock is from an SV-650. The bars are pretty simple pieces, but I turned them upside down. It actually makes for a nice riding position. I used the same seat that I stuck on there last year. It's not "done" really, but mostly because I will probably always want to change something here or there. I'd like to get different wheels and a different tank. Maybe some clip on bars, and maybe a whole new front end. Who knows, it's really quite endless.

Last edited by ///ficarra; 03-27-2012 at 10:38 PM.
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post #2 of 22 (permalink) Old 03-27-2012, 10:23 PM
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I like! Especially what you did with the frame.

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post #3 of 22 (permalink) Old 03-27-2012, 10:24 PM
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Holy Crap! RatBike of the Year! A for effort! How does it ride?

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post #4 of 22 (permalink) Old 03-27-2012, 10:28 PM Thread Starter
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Haven't taken it on any long rides yet (battery kept dying because it was dry), but around the block and such, it's going to take some getting used to. Mostly the foot position, but I think I'm going to change that up too.
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post #5 of 22 (permalink) Old 03-27-2012, 10:30 PM
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The Slayer banner is apropos for this Rat bike.

Its the perfect recession buster bike!
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post #6 of 22 (permalink) Old 03-27-2012, 10:32 PM Thread Starter
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Hehe, I got that SLAYER banner for my brother a couple years ago, and now it's our window covering for the garage. I cleared up that wall to take some photos, and I decided to leave that right where it was.
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post #7 of 22 (permalink) Old 03-27-2012, 10:46 PM
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good looking rat. i'm concerned about how you switched a double shock swinger to a side mounted monoshock, I'd think that little steel swingarm would flex like crazy.

Chris
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post #8 of 22 (permalink) Old 03-28-2012, 06:21 AM
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Super cool! I'd be concerned about that swing arm though as well.

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post #9 of 22 (permalink) Old 03-28-2012, 12:21 PM Thread Starter
Oh. Hi.
 
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I'm not too worried. The pivot point is pretty wide, and the swing arm itself is decently beefy. Only time will tell. If it's too bad, I'll go back to the drawing board.
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post #10 of 22 (permalink) Old 03-28-2012, 12:55 PM
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That thing really turned out well, phill. Looks great!
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post #11 of 22 (permalink) Old 03-28-2012, 02:08 PM
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kawasaki "Heavy Industries" indeed!

I keep coming back to that last photo and re-thinking all the pieces of shit that I've passed over on craigslist and wondering... "hmmm, can I pull this off for less than $500?"
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post #12 of 22 (permalink) Old 03-29-2012, 08:08 AM
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Any chance an SV650 swing arm could be made to fit? As with the others I'm concerned that swingarm was meant to be supported on both sides, by removing the shock on one side you're going to be stressing it quite a bit.

Shitty Pass Racing #513
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post #13 of 22 (permalink) Old 03-29-2012, 08:17 AM
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well, its not like he's going racing with the thing and it IS a solo bike only, so that should be just fine for puttering around town. Since he's a welder, I'm sure he'll be able to recognize metal when its beginning to stress or fracture?
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post #14 of 22 (permalink) Old 03-29-2012, 10:34 AM Thread Starter
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I took it out last night for a decent ride. I'm impressed with myself, Haha. It rides well and it's a good riding position.

Concerning the swing arm flexing, I didn't notice any problems. I did consider it when I was building it, and I think it's going to be just fine. The original suspension didn't do much in the way of stopping the arm from flexing. The new shock is mounted much further towards the center than the original shock. I'll keep an eye on it. I've welded for a couple years. I used to weld on much larger pieces of steel.

Anyway, thanks for the compliments. If this suspension does prove to be a flawed design, you can all say I told you so! Haha.
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post #15 of 22 (permalink) Old 03-29-2012, 10:45 AM
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Quote:
Originally Posted by ///ficarra View Post
I took it out last night for a decent ride. I'm impressed with myself, Haha. It rides well and it's a good riding position.

Concerning the swing arm flexing, I didn't notice any problems. I did consider it when I was building it, and I think it's going to be just fine. The original suspension didn't do much in the way of stopping the arm from flexing. The new shock is mounted much further towards the center than the original shock. I'll keep an eye on it. I've welded for a couple years. I used to weld on much larger pieces of steel.

Anyway, thanks for the compliments. If this suspension does prove to be a flawed design, you can all say I told you so! Haha.
naaah......just lookin' out that's all. If it's sound that's great! I'm really in awe in how this thing turned out. It's one of the most creative/cool builds I've seen. NICE!!

Brian (F.K.A. Crazy)

Gamertag: CRAZY403


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-Abraham Lincoln


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post #16 of 22 (permalink) Old 03-31-2012, 05:32 AM
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Nice job man, makes me want to get another old KZ1000 to restore, i miss my old bumble be with the vance hines open Drag pipes - My friends hated riding with me in the city as every viaduct i would rev it to the moon and scare the shit out of them.

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post #17 of 22 (permalink) Old 04-09-2012, 04:05 PM
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Looks great. End of last season I swapped an R1 front on my KZ750. Have a few more bits and pieces to go before I call it "finished" but I managed to keep it under $1500 budget.
post #18 of 22 (permalink) Old 04-09-2012, 04:13 PM
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Pretty cool

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As long as their tits are bigger than their dicks, im in.

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post #19 of 22 (permalink) Old 05-31-2012, 03:25 PM Thread Starter
Oh. Hi.
 
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Few more pics.









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post #20 of 22 (permalink) Old 08-24-2012, 12:34 PM
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got a little streetfighter to it. nice
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post #21 of 22 (permalink) Old 01-27-2014, 08:40 PM
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wow nice work
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post #22 of 22 (permalink) Old 02-22-2015, 02:37 AM

 
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Any new updats on this Rat?

過労死
--------------------------------------------
Brian
Nesba #98
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