Motorcycle Racing Forum

Racing Discussion => Racing Discussion => Topic started by: Jeff on May 05, 2003, 06:27:23 AM

Title: File under "Sh1t gone Horribly wrong"
Post by: Jeff on May 05, 2003, 06:27:23 AM
More pics on the bottom of my race report at:

http://www.cbr600f4.com/secondary_pages/2003_race_report2.htm

(https://www.ccsforum.com/proxy.php?request=http%3A%2F%2Fwww.cbr600f4.com%2Fpics%2F2003_0427%2Frod4.JPG&hash=910f5b28d9306fb48e17d1d1f54f3fbe1a4c911c)
Title: Re: File under "Sh1t gone Horribly wrong"
Post by: dwilson on May 05, 2003, 06:36:30 AM
Just put some duct tape on it, it's merely a flesh wound.

I didn't think Honda's did that (only Duc's & Buell's)...
Title: Re: File under "Sh1t gone Horribly wrong"
Post by: Nate R on May 05, 2003, 06:42:08 AM
 :o

Umm, soo, any idea why? Do you think you might've not done something right in your rebuild, or was that a different motor you rebuilt over the winter? Or, was it a random failure?

G/L with the RR. 104 off the floor is amazing. Pipe, PC, broken in fully, should see close to 110, eh?
Title: Re: File under "Sh1t gone Horribly wrong"
Post by: Jeff on May 05, 2003, 06:42:52 AM
QuoteJust put some duct tape on it, it's merely a flesh wound.

I didn't think Honda's did that (only Duc's & Buell's)...

Alas I've found something that JB-Weld can't fix...

Yes, this type of catastrophy is limited to Ducs, Buells and the occassional zuk.  However, with me spinning wrenches at 2:30 AM, you never know what'll happen...
Title: Re: File under "Sh1t gone Horribly wrong"
Post by: MightyDuc Racing on May 05, 2003, 06:51:08 AM
Tough weekend on motors this past one.  Saw mine go bad again, two SV's, and old two stroke of some kind, and a GSXR 600.  That's just the one's I know of.
Title: Re: File under "Sh1t gone Horribly wrong"
Post by: SliderPhoto on May 05, 2003, 06:52:35 AM
QuoteMore pics on the bottom of my race report at:
http://www.cbr600f4.com/pics/2003_0427/rod4.JPG[/img]

JeF4y, did you get those pics I uploaded for ya?
Title: Re: File under "Sh1t gone Horribly wrong"
Post by: Jeff on May 05, 2003, 06:54:30 AM
QuoteJeF4y, did you get those pics I uploaded for ya?

Not yet!  Sorry!  I will pull them off your server tonight.
Title: Re: File under "Sh1t gone Horribly wrong"
Post by: SliderPhoto on May 05, 2003, 06:56:50 AM
QuoteNot yet!  Sorry!  I will pull them off your server tonight.

No prob, just wasn't sure you got my e-mail.
Title: Re: File under "Sh1t gone Horribly wrong"
Post by: tshort on May 05, 2003, 07:48:44 AM
That's a pretty trick looking breather vent on that case, man....

bummer. :'(
Title: Re: File under "Sh1t gone Horribly wrong"
Post by: MightyDuc Racing on May 05, 2003, 07:51:24 AM
I know your pain, bro.  Times 2 now...lol.  I don't think mine's catastrophic this time...hopefully anyways. :-/  Good luck with yours.
Title: Re: File under "Sh1t gone Horribly wrong"
Post by: Dawn on May 05, 2003, 08:51:16 AM
QuoteI know your pain, bro.  Times 2 now...lol.  I don't think mine's catastrophic this time...hopefully anyways. :-/  Good luck with yours.


Sheesh Bryan...

Now what went wrong?

Dawn  :-/
Title: Re: File under "Sh1t gone Horribly wrong"
Post by: MightyDuc Racing on May 05, 2003, 08:52:59 AM
Here Dawn...
http://www.racemotorcycles.com/cgi-bin/board/YaBB.pl?board=ccs1;action=display;num=1052141865
Title: Re: File under "Sh1t gone Horribly wrong"
Post by: lightsmith on May 05, 2003, 10:34:13 AM
It looks like 2 different F2 motors that went south in back to back weekends some years ago.  It looked like the rod bolts were the weak link.  The ones that didn't break were stretched.  Conventional wisdom says that when you shut the throttle at high rpm, you no longer have the gas pressure pushing down on the piston helping it reverse direction.  Did it happen just when you started shutting down for a turn?  Another possibility is over-rev caused by downshifting too early, but this usually attacks the valve train.  By the way, I still have a stock F4 engine in the garage.  It's not the one I raced on.  My engine guy had taken it apart and  didn't have it back together when I came to pick it up.  This one is out of a crashed bike that had fairly low miles.  $1000 plus shipping if you're interested.  jlight@dca.net
Title: Re: File under "Sh1t gone Horribly wrong"
Post by: lil_thorny on May 05, 2003, 10:53:50 AM
Dude,
S U C K !!!!
Title: Re: File under "Sh1t gone Horribly wrong"
Post by: hi-side on May 05, 2003, 01:43:14 PM
I like that custom work you've done there, but I'm not certain if that's the correct place for an exhaust port...
Title: Re: File under "Sh1t gone Horribly wrong"
Post by: lil_thorny on May 05, 2003, 05:06:33 PM
looks like a bad porn flick.......

I don't know why I said that, but I did. :-X
Benji.
Title: Re: File under "Sh1t gone Horribly wrong"
Post by: sdiver68 on May 06, 2003, 10:10:59 AM
I've heard of draggin hard parts, but that was ridiculous!
 
 ;D
Title: Re: File under "Sh1t gone Horribly wrong"
Post by: Jeff on May 06, 2003, 11:12:25 AM
QuoteIt looked like the rod bolts were the weak link.  The ones that didn't break were stretched.  Conventional wisdom says that when you shut the throttle at high rpm, you no longer have the gas pressure pushing down on the piston helping it reverse direction.  Did it happen just when you started shutting down for a turn?  Another possibility is over-rev caused by downshifting too early, but this usually attacks the valve train.

It started in 5th gear, nearly topped out on the straight at road A.  It started shaking and lost power, I hit 6th and it let loose.

Quote By the way, I still have a stock F4 engine in the garage.  It's not the one I raced on.  My engine guy had taken it apart and  didn't have it back together when I came to pick it up.  This one is out of a crashed bike that had fairly low miles.  $1000 plus shipping if you're interested.  jlight@dca.net

Nah... that's okay, I'm selling it off to fund some spares for the new RR

http://www.cbr600rr.com/gallery/jeffsRR
http://www.cbr600rr.com/gallery/racebike