CBR 600F 1987 - 1990 CBR 600F Forum

Handling limits...

Thread Tools
 
Search this Thread
 
  #21  
Old 01-22-2009, 12:28 AM
Gearloose's Avatar
Senior Member
Join Date: Sep 2007
Posts: 157
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Handling limits...

Hey, I found the 'cane's braking limit in the wet last weekend. Low-sided on the track then flipped twice. Wife sure is cross.

[IMG]local://upfiles/20544/710BB034985F415884ACF688184CA384.jpg[/IMG]

[IMG]local://upfiles/20544/A6355C0B67B448E4A89C3E1D0DAAF3E0.jpg[/IMG]
 
  #22  
Old 01-22-2009, 04:51 AM
thegreenbandit's Avatar
Senior Member
Join Date: Mar 2008
Posts: 237
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Handling limits...

Whoa, is the frame bent? Do we now all have a source of parts ? lol
 
  #23  
Old 01-23-2009, 01:55 AM
Gearloose's Avatar
Senior Member
Join Date: Sep 2007
Posts: 157
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Handling limits...

H'mmm... come to think if it, praps it always looked like this. Will try to convince local Honda dealer there was a manufacturing defect, get it fixed under warranty. Must be a Honda service bulletin to dealers somewhere ... "bug report: customer reports parts of fairings have fallen off, clutch cover has hole it in, mirrors not working, and bike needs to be ridden side-saddle to avoid back problems."

I scraped together a few bits'npieces over the last few years so I think I've got most things that I need. Currently studying how to repair plastics, and designing a jig to get the subframe straight. Main thing is that both wheels are vertical, axles are straight, forks straight, engine lines up with back wheel. Having got that far, she'll be a cinch to fix. (????)
 
  #24  
Old 01-23-2009, 02:05 AM
thegreenbandit's Avatar
Senior Member
Join Date: Mar 2008
Posts: 237
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Handling limits...

tell them it's a 2002 goldwing, that should be legit

Id just go buy a new sub frame from the scrapper. If you bend it back in shape it might work harden things.
 
  #25  
Old 01-23-2009, 03:51 AM
Gearloose's Avatar
Senior Member
Join Date: Sep 2007
Posts: 157
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Handling limits...

I done a bit of experimenting and think it'll bend back into shape OK, there are no real creases or sharp bends so I don't think work hardening will create any problems.

Michigan_313 has supplied some dimensions to help me get it back in position.
 
  #26  
Old 01-23-2009, 06:08 AM
thegreenbandit's Avatar
Senior Member
Join Date: Mar 2008
Posts: 237
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Handling limits...

I was just wondering, where you actually racing with your centerstand still on?
 
  #27  
Old 01-23-2009, 06:21 PM
Gearloose's Avatar
Senior Member
Join Date: Sep 2007
Posts: 157
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Handling limits...

Not racing... just a mellow track day, so left centre stand on. Hadn’t even bothered to take mirrors off etc, confident that I’d behave myself.
 
  #28  
Old 01-23-2009, 10:10 PM
michigan_313's Avatar
Senior Member
Join Date: Feb 2006
Posts: 778
Likes: 0
Received 1 Like on 1 Post
Default RE: Handling limits...

that confidence bit you in the ***. j/k.

the subframe will bend back easily enough, it's very forgiving. take off all the stuff attached to the subframe, put the back up on a swingarm stand cinched down, get someone to hold the bike, and you with a lengthy bit of lumber between the parallels leverage the subframe back into plane. i realize this is very crude but it is also very cost effective and works very well.

or lop the subframe off and switch to something more up to date like a 600rr with tail section and plastics. eh?
 
  #29  
Old 01-24-2009, 12:33 AM
Gearloose's Avatar
Senior Member
Join Date: Sep 2007
Posts: 157
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Handling limits...

I've just straightened it like you said, this morning. A strong friend came over and we just levered it back into place (almost... back end is now only 1/4" off centre but couldn't get enough grunt to do the last little bit).

Yeah, I certainly learnt a few things up close & practical from chucking it down the track, but nothing that hasn't already been said!
 
  #30  
Old 01-25-2009, 01:21 AM
michigan_313's Avatar
Senior Member
Join Date: Feb 2006
Posts: 778
Likes: 0
Received 1 Like on 1 Post
Default RE: Handling limits...

try not tobust a nut or get a hernia. it's just a bike.

i probably should've mentioned this had i actually thought about it, but if you have a torch, you can give a little heat to the parallels and that would make straightening things a bit easier. just remember that you'll have to go past center to account for spring-back.

do you have pic of bent subframe w/ everything off. kinda would like to see before and after pics out of curiousity.
 


Quick Reply: Handling limits...



All times are GMT -5. The time now is 10:18 AM.