stlcbr's '12 ninja 250 Race Bike Build - Page 3

krakatak · October 12th, 2013, 03:16 PM

I still can't believe I didn't see you out on the track! We'll have to make sure that happens in the Spring. (I'm on the orange and black 250).

Riding with Wesley and Alex helped me gain a little perspective on my riding (turns out I was/am giving up a LOT of time in turn 6, and I'm still not happy), and just riding one session with Rick helped me drop about a half second off my personal best. I ran some mid 1:22s and consistent (& reasonably comfortable) 1:23s when I wasn't dodging big bikes, and think that the Spring will see further improvement.

adouglas · October 13th, 2013, 10:29 AM

Quote:

Originally Posted by Knolly

Good meeting you and playing around on the track this weekend! I was having a blast until THE INCIDENT, haha.

bahahahah

"Oww…. ugh….. ow ow ow owowow….."

rc-rick · October 13th, 2013, 08:31 PM

Quote:

Originally Posted by Knolly

Good meeting you and playing around on the track this weekend! I was having a blast until THE INCIDENT, haha.

Someone else had an "incident" at Putnam...

JohnnyBravo · October 13th, 2013, 09:09 PM

stlcbr · October 14th, 2013, 06:02 AM

Quote:

Originally Posted by rc-rick

Someone else had an "incident" at Putnam...

Someone told me that the 250's crashed really well

I just had to find out for myself

Knolly · October 14th, 2013, 06:08 AM

Didn't your lack of incidents at Gateway put you WAY below average? You should have seen this one coming!

How are you and the bike doing?

stlcbr · October 14th, 2013, 06:11 AM

Quote:

Originally Posted by Knolly

Didn't your lack of incidents at Gateway put you WAY below average? You should have seen this one coming!

How are you and the bike doing?

oh it did lol.

I'm fine, lowsided entering Deadbear (Turn 8). I got the bike back up and started, then realized my left reaset dissapeared

ripped the whole rearset off where it bolts to the frame, bending the frame in a little. So I'll have to try and bend it back and probably weld in some support to keep the frame from folding again.

csmith12 · October 14th, 2013, 06:42 AM

Damn, Deadbear is hungry for rearsets as of late. Your the 3rd 250 rider who has had their rearset ripped out of the frame in the last 2 or 3 track/race days. Good luck with the repairs.

Knolly · October 14th, 2013, 06:50 AM

Ah, glad to hear you're alright, it's too bad about the peg mounts. I want to reinforce that mounting area as well. At this point I'm trying to figure out if I can manage to do it without removing the swingarm and everything, but I have a feeling to get a nice weld in there I'll have to.

stlcbr · October 14th, 2013, 06:50 AM

Quote:

Originally Posted by csmith12

Damn, Deadbear is hungry for rearsets as of late. Your the 3rd 250 rider who has had their rearset ripped out of the frame in the last 2 or 3 track/race days. Good luck with the repairs.

Thanks, shouldn't be too bad, just need to get some spares to have, little lowside ended the day

Here's the damage:

I'll have to bend the frame back out, and reinforce the mount, then should be good to go. At least it was the last day of the season.... plenty of time to make repairs and improvements

I'm going to reinforce the other side as well, prevent a small incident from ruining a race day/weekend next year

jkv45 · October 14th, 2013, 08:07 AM

Quote:

Originally Posted by stlcbr

I'll have to bend the frame back out, and reinforce the mount, then should be good to go. At least it was the last day of the season.... plenty of time to make repairs and improvements

Yikes - I didn't realize the peg mounts were so susceptible to being ripped from the frame. Seems pretty common any time it goes down.

Looks like reinforcement of that area is a good idea, but have you thought about notching or drilling the footpegs in some way to give them a break-away point so the damage stops there? Easy enough to just carry an extra peg or 2.

DCMoney · October 14th, 2013, 08:38 AM

Quote:

Originally Posted by jkv45

Yikes - I didn't realize the peg mounts were so susceptible to being ripped from the frame. Seems pretty common any time it goes down.

Looks like reinforcement of that area is a good idea, but have you thought about notching or drilling the footpegs in some way to give them a break-away point so the damage stops there? Easy enough to just carry an extra peg or 2.

Woodcraft come with relief cuts to induce a clean break in a crash. Apparently just not enough to save the frame of a 250.

simook · October 14th, 2013, 09:04 AM

Im very curious on the steps you take to reinforce the rear-set mounts.

csmith12 · October 14th, 2013, 09:38 AM

Quote:

Originally Posted by DCMoney

Woodcraft come with relief cuts to induce a clean break in a crash. Apparently just not enough to save the frame of a 250.

As he predicted in post #40.

jkv45 · October 14th, 2013, 10:01 AM

Quote:

Originally Posted by csmith12

As he predicted in post #40.

Yes he did...

Looks like they are overly strong for this application and some type of cutting may be in order.

stlcbr · October 14th, 2013, 11:20 AM

Quote:

Originally Posted by csmith12

As he predicted in post #40.

Exactly what I was worried about

Quote:

Originally Posted by jkv45

Yes he did...

Looks like they are overly strong for this application and some type of cutting may be in order.

And that's exactly what I'm going to do, cut the bottom half off after the "break away" point, so it will easily break where it should, and not rip them out of the frame...

Here are my Woodcraft rearsets after my lowside on Saturday. The bike slid out bending up shifter back. Once the bike was on the ground and sliding it turned so the tail was the first part to go off the track. It looks like the peg caught the dirt and ripped out of the frame. you can see exactly what part is covered in dirt, and the peg bent forward. Had it had a better design, I believe the dirt would have just ripper the peg off, and I wouldn't be fixing a frame right now...

You can see the "break away" cuts did nothing, and held completely in tact:

You can see where the rearset got ripped at the mounts, and the shifter bend back and rashed, along with the peg from the initial slide:

Again you can see the shifter bent back and the peg rashed from the initial slide. But then the dirt on the back half of the peg which is bent forward, causing the force which ripped the entire rearset from the mounts:

Now for the frame:

You can see it was the force applied from the rearset towards the front of the bike that ripped it from the frame. Bending the frame in until the mounts finally gave:

Here are my Attack Rearsets off my old '09 zx6r.

You can see here it's a hollow design, but with no bottom half. This is so in a crash, it takes very small amount of force to break the end of the peg off right at the "break away" point.

From the back it's hard to see, but looking at the left side, you can see how the peg has very little material at the end and how the underside has no bottom half so it breaks easier in a crash. The base of the peg is completely solid, so you still have about 1 1/2" left after the tip breaks away to finish a race if need be.

Once I fix the frame and add reinforcement, I'm going to cut the bottoms of the pegs off like the Attacks to hopefully help protect the frame and easily break away

genosr1 · October 14th, 2013, 12:12 PM

You just cant have anything nice can you and stop.playing with your ni no parts so much

rc-rick · October 14th, 2013, 02:18 PM

Hey Geno! I wonder why you joined this forum? Hmmmm...

stlcbr · October 14th, 2013, 02:22 PM

Quote:

Originally Posted by rc-rick

Hey Geno! I wonder why you joined this forum? Hmmmm...

sh*t

Mark Cook · October 14th, 2013, 02:53 PM

uh oh, the SV guys are stalking the 250 forum. Lookout...

rc racer · October 14th, 2013, 02:54 PM

Thinks its time to add some extra break away cuts to my woodcrafts too. Where is my dremel?

csmith12 · October 14th, 2013, 02:54 PM

Quote:

Originally Posted by Mark Cook

uh oh, the SV guys are stalking the 250 forum. Lookout...

lol

genosr1 · October 14th, 2013, 03:16 PM

i'm going to build a superbike 250 for the mcra stuff next year,and put a 135 pounder on it, everyones gonna want a motor like mine, and for a small fee they can, plus i like keeping tabs on rizzy he's my test dummy, whatever he screws up i won't have to

csmith12 · October 14th, 2013, 03:23 PM

Quote:

Originally Posted by genosr1

i'm going to build a superbike 250 for the mcra stuff next year,and put a 135 pounder on it

I know just the guy. @choneofakind you know you wanna.

choneofakind · October 14th, 2013, 03:25 PM

bwahahaha actually more like 130 now... (

)

errmmmmm no commitment just yet. Job/classes are priority as of now.

KawiKid860 · October 14th, 2013, 04:57 PM

Awesome build, but why does everyone use those grey renthal grips on track/race bikes?

Really want a 250 for track/race, debating turning my 500 into a track or race bike but the 250 is a lot more popular and has a better aftermarket.

Mark Cook · October 14th, 2013, 05:28 PM

I'm not saying I'm building a 250, but I am making a list of parts that could possibly fit on one.

stlcbr · October 14th, 2013, 05:28 PM

Quote:

Originally Posted by KawiKid860

Awesome build, but why does everyone use those grey renthal grips on track/race bikes?

I like the Renthal grips and have been using them for awhile. The Gray color simply indicates the compound of the grip:

Soft - Light Gray
Medium - Dark Gray
Firm - Black

I would much rather them be Black, but that's not the compound I like so...

stlcbr · October 14th, 2013, 05:31 PM

Quote:

Originally Posted by genosr1

i'm going to build a superbike 250 for the mcra stuff next year,and put a 135 pounder on it, everyones gonna want a motor like mine, and for a small fee they can, plus i like keeping tabs on rizzy he's my test dummy, whatever he screws up i won't have to

Glad I could help Geno, but shouldn't I get compensation for my services? One of those motors and we'll call it even

genosr1 · October 14th, 2013, 05:35 PM

you just keep up the destructive testing and we'll talk compensation later

sharky nrk · October 15th, 2013, 05:17 AM

Quote:

Originally Posted by stlcbr

I like the Renthal grips and have been using them for awhile. The Gray color simply indicates the compound of the grip:

Soft - Light Gray
Medium - Dark Gray
Firm - Black

I would much rather them be Black, but that's not the compound I like so...

or the hideous kevlar brown I have on mine lol

stlcbr · October 15th, 2013, 06:13 AM

Here ya go

Link to original page on YouTube.

csmith12 · October 15th, 2013, 06:48 AM

Whoa! On entrance?!?!?! Hmmm.... I was at Putnam just 2 weeks ago and 5 other riders went down in the same area and I went off track in that exact same spot that weekend. Interesting.....

stlcbr · October 15th, 2013, 06:53 AM

Quote:

Originally Posted by csmith12

Whoa! On entrance?!?!?! Hmmm.... I was at Putnam just 2 weeks ago and 5 other riders went down in the same area and I went off track in that exact same spot that weekend. Interesting.....

Yea there were 3 or 4 other crashes there just on Sunday, all in that spot. Not even sure what happened really, this is the first crash where I got up and was not sure what went wrong.

I talked to @rc-rick , who was following me and said it looked like I tried to square off the turn too much entering late and putting too much load on the front tire.

It was the last session before lunch ( my first session out) about the 4th or 5th lap, just trying to figure out what lines worked on the 250... apparently not that one

csmith12 · October 15th, 2013, 07:23 AM

Many riders take that line. Deadbear has many lines that work, it's just a choice of where you do want to be faster, entry, midcorner or exit. Although, you seemed to be directly on top of the seam, maybe that's it.

Rick would know better, as he seen it first hand.

Your line looks similar to my track day line, with a later apex. Mid track turn in for a tight exit near the early-top of the corner. It's more of the wet line vs a dry line for me though. When dry, I like to take a mid corner apex there. Because the 250 is twitchy enough leaned way over as it is without adding the camber change at the far right top of turn 8 into the mix. YMMV of course and I am only a 3rd place racer.

Like you, when I went off the track, I had no clue why my rear broke traction. It had been fine for my pace all day. Just seems odd that this area of track is now suddenly seeing more crashes where it wasn't before.

On a side note, did you happen to see a rearset out there (same as yours)? We still have a missing one. lol

stlcbr · October 15th, 2013, 07:26 AM

Quote:

Originally Posted by csmith12

On a side note, did you happen to see a rearset out there (same as yours)? We still have a missing one. lol

I did go back out and pick up a rearset... but I know it was mine as it had the rest of the broken shifter linkage on it haha.

I followed the line in the dirt and it was right there dug in the ground, can't believe I found it.

cuong-nutz · October 15th, 2013, 07:49 AM

Quote:

Originally Posted by stlcbr

I did go back out and pick up a rearset... but I know it was mine as it had the rest of the broken shifter linkage on it haha.

I followed the line in the dirt and it was right there dug in the ground

cool stuff

sharky nrk · October 21st, 2013, 04:30 AM

I lost the front there in a very similar fashion. Nearly no warning, tucked front on entrance. I chocked mine up to cold and old tires at the time.

red26 · August 11th, 2014, 10:32 AM

Nice!

Any plans for the brake pads? EBC is good, with the HH rated

October 13th, 2013, 09:09 PM	#84
JohnnyBravo Certifiable nontundrum Name: Harper Location: NC Milkshake stand Join Date: Mar 2013 Motorcycle(s): 2013 SE NINJA 300 Posts: Too much. MOTM - Sep '13, Sep '16	__________________________________________________

October 14th, 2013, 06:42 AM	#88
csmith12 The Corner Whisperer Name: Chris (aka Reactor) Location: Northern KY Join Date: May 2011 Motorcycle(s): 2010 250 (track), 1992 250, 2006 R6 (street/track), 2008 R6 (track) Posts: Too much. MOTY 2015, MOTM - Nov '12, Nov '13	Damn, Deadbear is hungry for rearsets as of late. Your the 3rd 250 rider who has had their rearset ripped out of the frame in the last 2 or 3 track/race days. Good luck with the repairs. __________________________________________________ Goal: Shake A Million Hands \| Look through the corners \| Track Day Prep \| Closest track? \| The Mid-Ohio School

October 15th, 2013, 06:13 AM	#112
stlcbr Braaap Name: Ryan Location: St. Louis, MO Join Date: Sep 2013 Motorcycle(s): 2012 ninja 250r SE. 2002 Suzuki DRZ400e Supermoto Posts: 90	Here ya go Link to original page on YouTube. __________________________________________________

October 15th, 2013, 06:48 AM	#113
csmith12 The Corner Whisperer Name: Chris (aka Reactor) Location: Northern KY Join Date: May 2011 Motorcycle(s): 2010 250 (track), 1992 250, 2006 R6 (street/track), 2008 R6 (track) Posts: Too much. MOTY 2015, MOTM - Nov '12, Nov '13	Whoa! On entrance?!?!?! Hmmm.... I was at Putnam just 2 weeks ago and 5 other riders went down in the same area and I went off track in that exact same spot that weekend. Interesting..... __________________________________________________ Goal: Shake A Million Hands \| Look through the corners \| Track Day Prep \| Closest track? \| The Mid-Ohio School

October 15th, 2013, 07:23 AM	#115
csmith12 The Corner Whisperer Name: Chris (aka Reactor) Location: Northern KY Join Date: May 2011 Motorcycle(s): 2010 250 (track), 1992 250, 2006 R6 (street/track), 2008 R6 (track) Posts: Too much. MOTY 2015, MOTM - Nov '12, Nov '13	Many riders take that line. Deadbear has many lines that work, it's just a choice of where you do want to be faster, entry, midcorner or exit. Although, you seemed to be directly on top of the seam, maybe that's it. Rick would know better, as he seen it first hand. Your line looks similar to my track day line, with a later apex. Mid track turn in for a tight exit near the early-top of the corner. It's more of the wet line vs a dry line for me though. When dry, I like to take a mid corner apex there. Because the 250 is twitchy enough leaned way over as it is without adding the camber change at the far right top of turn 8 into the mix. YMMV of course and I am only a 3rd place racer. Like you, when I went off the track, I had no clue why my rear broke traction. It had been fine for my pace all day. Just seems odd that this area of track is now suddenly seeing more crashes where it wasn't before. On a side note, did you happen to see a rearset out there (same as yours)? We still have a missing one. lol __________________________________________________ Goal: Shake A Million Hands \| Look through the corners \| Track Day Prep \| Closest track? \| The Mid-Ohio School

October 12th, 2013, 03:16 PM	#81
krakatak ninjette.org member Name: Josh Location: St. Louis, MO Join Date: Jul 2011 Motorcycle(s): Ninja 250r Posts: 41	I still can't believe I didn't see you out on the track! We'll have to make sure that happens in the Spring. (I'm on the orange and black 250). Riding with Wesley and Alex helped me gain a little perspective on my riding (turns out I was/am giving up a LOT of time in turn 6, and I'm still not happy), and just riding one session with Rick helped me drop about a half second off my personal best. I ran some mid 1:22s and consistent (& reasonably comfortable) 1:23s when I wasn't dodging big bikes, and think that the Spring will see further improvement.

October 14th, 2013, 06:08 AM	#86
Knolly ninjette.org member Name: Alex Location: Chicago Join Date: Apr 2013 Motorcycle(s): Daytona 675 Posts: 79	Didn't your lack of incidents at Gateway put you WAY below average? You should have seen this one coming! How are you and the bike doing?

October 14th, 2013, 06:50 AM	#89
Knolly ninjette.org member Name: Alex Location: Chicago Join Date: Apr 2013 Motorcycle(s): Daytona 675 Posts: 79	Ah, glad to hear you're alright, it's too bad about the peg mounts. I want to reinforce that mounting area as well. At this point I'm trying to figure out if I can manage to do it without removing the swingarm and everything, but I have a feeling to get a nice weld in there I'll have to.

October 14th, 2013, 09:04 AM	#93
simook ninjette.org member Name: Kyle Location: Portland, Oregon Join Date: Sep 2013 Motorcycle(s): 2008 Ninja 250R Posts: 106	Im very curious on the steps you take to reinforce the rear-set mounts.

October 14th, 2013, 12:12 PM	#97
genosr1 ninjette.org member Name: geno Location: granite city Join Date: Oct 2013 Motorcycle(s): gsxr 750, sv650, 250 ninja Posts: 110	You just cant have anything nice can you and stop.playing with your ni no parts so much

October 14th, 2013, 02:18 PM	#98
rc-rick ninjette.org member Name: Rick Location: St Peters Join Date: Feb 2013 Motorcycle(s): '09 ZX6 (street), '04 RC51 (street/track), '08 Ninja 250 (race) Posts: 104	Hey Geno! I wonder why you joined this forum? Hmmmm...

October 14th, 2013, 02:53 PM	#100
Mark Cook Full Time Survivor Name: Mark Location: Saint Louis Join Date: Oct 2013 Motorcycle(s): 2012 Panigale S, 2010 Streetfighter, 2008 250r, 2002 Sv650, 1999 Sv650, 1965 CB160, 1963 Vespa GS160 Posts: 43	uh oh, the SV guys are stalking the 250 forum. Lookout...

October 14th, 2013, 02:54 PM	#101
rc racer ninjette.org member Name: robert Location: Dallas Join Date: Oct 2012 Motorcycle(s): 2015 R3, 1969 CB160, 2002 TTR125, 2007 KX250F Posts: 96	Thinks its time to add some extra break away cuts to my woodcrafts too. Where is my dremel?

October 14th, 2013, 03:16 PM	#103
genosr1 ninjette.org member Name: geno Location: granite city Join Date: Oct 2013 Motorcycle(s): gsxr 750, sv650, 250 ninja Posts: 110	i'm going to build a superbike 250 for the mcra stuff next year,and put a 135 pounder on it, everyones gonna want a motor like mine, and for a small fee they can, plus i like keeping tabs on rizzy he's my test dummy, whatever he screws up i won't have to

October 14th, 2013, 03:25 PM	#105
choneofakind ninjette.org certified postwhore Name: . Location: . Join Date: Feb 2011 Motorcycle(s): . Posts: Too much. MOTM - Feb '13, Feb '14	bwahahaha actually more like 130 now... ( ) errmmmmm no commitment just yet. Job/classes are priority as of now.

October 14th, 2013, 04:57 PM	#106
KawiKid860 ninjette.org certified postwhore Name: Murphey Location: Eastern Washington Join Date: Apr 2011 Motorcycle(s): 2002 Honda 919, 2004 Ninja 500R NAKED Posts: A lot.	Awesome build, but why does everyone use those grey renthal grips on track/race bikes? Really want a 250 for track/race, debating turning my 500 into a track or race bike but the 250 is a lot more popular and has a better aftermarket.

October 14th, 2013, 05:28 PM	#107
Mark Cook Full Time Survivor Name: Mark Location: Saint Louis Join Date: Oct 2013 Motorcycle(s): 2012 Panigale S, 2010 Streetfighter, 2008 250r, 2002 Sv650, 1999 Sv650, 1965 CB160, 1963 Vespa GS160 Posts: 43	I'm not saying I'm building a 250, but I am making a list of parts that could possibly fit on one.

October 14th, 2013, 05:35 PM	#110
genosr1 ninjette.org member Name: geno Location: granite city Join Date: Oct 2013 Motorcycle(s): gsxr 750, sv650, 250 ninja Posts: 110	you just keep up the destructive testing and we'll talk compensation later

October 21st, 2013, 04:30 AM	#118
sharky nrk Fighting Texas Aggie '05 Name: Neil Location: Hutto, TX Join Date: Feb 2009 Motorcycle(s): '07 ZX6R, '08 Versys, '09 250R Track, '93 F2/F3 Track Posts: A lot.	I lost the front there in a very similar fashion. Nearly no warning, tucked front on entrance. I chocked mine up to cold and old tires at the time.

August 11th, 2014, 10:32 AM	#119
red26 ninjette.org member Name: red Location: KL, Malaysia Join Date: Apr 2013 Motorcycle(s): Ninja 250R, GSXR600 K4, KX250F,NSR150SP, Yamaha TZM150 Posts: 68	Nice! Any plans for the brake pads? EBC is good, with the HH rated

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
CVMA Race bike build - buncha questions	cookiebug79	2008 - 2012 Ninja 250R Tech Talk	4	July 22nd, 2014 01:30 PM
Race Bike Build	Mark Cook	2008 - 2012 Ninja 250R Tech Talk	48	May 7th, 2014 07:47 PM
My 250R Race Bike Build	icbm	Pictures	5	August 16th, 2012 11:06 AM
Plum Crazy Purple Race Bike Build	kogary	Pictures	12	May 18th, 2011 02:59 PM
My track/race 250 'build'	switch	Ninjettes At Speed	14	April 22nd, 2010 04:45 PM