Motorcycle Racing Forum

Racing Discussion => Racing Discussion => Topic started by: tzracer on January 31, 2004, 04:33:20 PM

Title: Wasting time
Post by: tzracer on January 31, 2004, 04:33:20 PM
Update on how I have been wasting my time this winter working on my 2003 SV650 ;)

Came up with a way to hold the rear brake caliper in place while changing rear wheel. Note the small bolt and milled slot.
(https://www.ccsforum.com/proxy.php?request=http%3A%2F%2Fmy.execpc.com%2F%7Etzracer%2FDSCN0088.JPG&hash=20f7f157381b37ec901caba1633df0038d0a4c8d)

Some other parts I have made, mine on left, Suzuki on the right.

Front wheel spacer
(https://www.ccsforum.com/proxy.php?request=http%3A%2F%2Fmy.execpc.com%2F%7Etzracer%2FDSCN0089.JPG&hash=2ae4c6b02694d9076e7189daed4d27fa9d0f4e97)

Rear subframe
(https://www.ccsforum.com/proxy.php?request=http%3A%2F%2Fmy.execpc.com%2F%7Etzracer%2FDSCN0090.JPG&hash=bc8a481072a308366180c3fc0f8ac410391cf444)

Front fairing bracket.
(https://www.ccsforum.com/proxy.php?request=http%3A%2F%2Fmy.execpc.com%2F%7Etzracer%2FDSCN0091.JPG&hash=13d304db6e282f372e8d966f09941ec19b3f3329)

Rear wheel spacers
(https://www.ccsforum.com/proxy.php?request=http%3A%2F%2Fmy.execpc.com%2F%7Etzracer%2FDSCN0095.JPG&hash=164bada5e17130464d6a958719d604bff0516293)
Title: Re: Wasting time
Post by: Xian_13 on January 31, 2004, 04:48:18 PM
I like that Idea on ethe rear brake caliper!
Title: Re: Wasting time
Post by: EM JAY on February 01, 2004, 03:34:18 AM
  Pretty cool!  Can't wait till I get my SV..... ;D
Title: Re: Wasting time
Post by: Arnziffel on February 01, 2004, 05:36:44 AM
Hey Brian ,

What does it take to bend the square aluminum tubing you used on the subframe? What kind of wall thickness? Was looking at doing the same for the R6.
Title: Re: Wasting time
Post by: ninelives59 on February 01, 2004, 02:37:53 PM
did you make the rear subframe yourself?Looks pretty cool..
Title: Re: Wasting time
Post by: WebCrush on February 01, 2004, 03:05:38 PM
i especially like the brake caliper mod.

I wish I could do the same on my 1k swing arm but the retaining notch is reversed
Title: can
Post by: tzracer on February 02, 2004, 05:58:57 AM
Yes, I made everything myself. I learned to machine and weld when I worked at Buell from 1986 to 1990. Also learned to design parts and improve existing designs.

For tunately I have a part time job in a job shop (Church Metal Spinning - so I can say I go to church 4 days a week ;)). I have access to a lathe, 2 mills, shear, 2 press brakes, manual break, tubing bender, 2 TIG welders, and 2 CO2 lasers. It also helps to know how to use them.

I bent the square tubing using a tubing bender. I just used some dies for round tubing, about 1.5" OD. I have seen a bench top and a floor bender that could do the job for $100. Eastwood has the floor version, I can't recall where I saw the bench top one. You could make your own, not too difficult if you have seen a bender up close. I made my own for small tubing for fairing brackets, maybe I can take some pictures in the next couple of days.
Title: Re: Wasting time
Post by: jp233 on February 02, 2004, 08:43:28 AM
those are freakin sweet Brian! but, will the SV be as fun as a TZ? :) ;D
Title: Re: Wasting time
Post by: tzracer on February 02, 2004, 11:06:06 AM
Quotethose are freakin sweet Brian! but, will the SV be as fun as a TZ? :) ;D

No :-[

but with availability of new bikes and parts for them, I decided to switch to the dark side.

2 strokes smoke, 4 strokes choke
Title: Re: Wasting time
Post by: OmniGLH on February 02, 2004, 12:59:35 PM
The brake caliper mod is a GREAT idea.  I like the way you did it - very simple.  Why didn't *I* think of that?!?!?!

You got any ideas on how to keep the sprocket and chain attached while swapping rear wheels?  ;)
Title: Re: Wasting time
Post by: tzracer on February 02, 2004, 03:08:54 PM
The only trick to the brake caliper mod is getting the hole tapped to the correct depth. There is space between the caliper carrier and the piece on the swingarm. I tapped the hole so that the bolt could not be over tightened, overtightening would push the front of the carrier too close to the swingarm. I used a 3mm bolt.
Title: Re: Wasting time
Post by: Zac on February 03, 2004, 06:08:36 AM
QuoteThe only trick to the brake caliper mod is getting the hole tapped to the correct depth. There is space between the caliper carrier and the piece on the swingarm. I tapped the hole so that the bolt could not be over tightened, overtightening would push the front of the carrier too close to the swingarm. I used a 3mm bolt.

You could also use a bushing cut to the proper length to control the screw engagement.  Would require a wider slot as well though.

Cool parts  :D  Makes me really wish I had a lathe...though I think that's next on the major tool purchase list (I already hear my wife:"not till you get that CAR out of the garage!")

-z.
Title: Re: Wasting time
Post by: tzracer on February 03, 2004, 06:48:05 AM
The tubing I used for the rear subframe was 3/4" square with a 0.125" wall. Since all the square tubing I could find was 6063, I erred on the side of safety, some of it, possibly all could be made with 0.063" wall.
Title: Re: Wasting time
Post by: jp233 on February 03, 2004, 09:38:53 AM
2 strokes smoke, 4 strokes choke

you ain't kiddin man!! I almost was going to ride an SV in endurance this year, and hang up the TZ for a season to save money etc. But, its looking like I"ll be smoking oil all season :) hopefully we'll meet at the track again this year, I'll bring what I can but I can't out-do your wife's brats man!!!! i think I can still taste one heehehee
Title: Re: Wasting time
Post by: Nate R on February 03, 2004, 03:36:07 PM
Zac: Dunno what you'd all be looking to do with a lathe. But, if you don't need anything HUGE, then check out mini-lathe.com

Lots of good info about small lathes. I got my Homier 7X12 mini lathe for $360 to my door, and it's been working well for over 200 pairs of sliders so far, as well as some various aluminum bits.

Be aware that if you buy a lathe, you'll probably end up spending about $100 in accessories. Tools, cutting tools, cutting tool holder, live center, drill chuck, etc etc
Title: Re: Wasting time
Post by: MZGirl on February 03, 2004, 05:54:13 PM
QuoteBe aware that if you buy a lathe, you'll probably end up spending about $100 in accessories. Tools, cutting tools, cutting tool holder, live center, drill chuck, etc etc

Not until he gets that car out of the garage!   >:(
Title: Re: Wasting time
Post by: Zac on February 04, 2004, 06:44:04 AM
Hey, I recently put enough parts on the car to make enough room to set up the tire changer  :P

Nate, as far as lathes go, I'd really like something like a nice 9" South Bend, would like to find a used one with a good assortment of tooling.  I've tossed around the idea of a mini lathe which would really do about 80% of what I want to do, but I've gotten spoiled working on nice, big, rigid machines.

-z.
Title: Re: Wasting time
Post by: tzracer on February 04, 2004, 06:59:52 AM
I was drooling over some pictures in a flyer for a sale at a prototyping company that was goin out of sale. The equipment looked to be in great shape. They were selling 3 Hardinge tool room lathes.

Depending upon your budget, this lathe looks interesting
http://www.smithy.com/bz239.htm