Track Stories 08

[lecroy]

Oh yea, 4 picture limit.... This is how things are looking in the belly.
/n

[DreamRyder]

LOL - you kill me... I'm comin for ya hun... just you wait... it may take me a bit to get back to where I was but I'm on my way ;o)

Here's the videos of the last few passes...

it looks so slow motion heehehee.. also it appears I reverted back to my old habit of pullin my feet to the front pegs rather than the drag.. which I never thought would be possilbe with how close they were to the seat rails now after all the modding done.

E.

8.66 run

http://s211.photobucket.com/albums/bb74/dreamryder929/2008%20July%2030%20Grove/?action=view&current=2008July31Grove8_66run3.flv

8.61 run

http://s211.photobucket.com/albums/b...ve8_61run4.flv

8.48 run

http://s211.photobucket.com/albums/bb74/dreamryder929/2008%20July%2030%20Grove/?action=view&current=2008July31Grove8_48run5.flv

8.40 run

http://s211.photobucket.com/albums/bb74/dreamryder929/2008%20July%2030%20Grove/?action=view&current=2008July31Grove8_40run6.flv

[rosco15]

It's official. Something is wrong with the tranny. No shifting on 2 runs tonight. a year and a half flawless and now we're broken. Gonna pull out the shift shaft and forks tomorrow. Hoping I don't have to split the cases, but we'll see.

http://media.putfile.com/Ryan-and-Tom/

[RacingJake]

Hope it's not the dogs, maybe you'll get lucky and find a bad return spring or shifting drum mech stuff.

One thing I notice with the 750 ratio is that the tranny never missed a shift ?? Maybe since it's turning slower engagement is easier. But since I'm back to the 1100 now they do happen.

I've never bend a shift fork and from the looks of them they can take a beating.

Good Luck

[rosco15]

I pulled the forks and found one damaged. R+D said the damage to the shift fork comes from damage to the dogs. Replacing the fork may fix the problem for about 20 passes, but then the missed shifts would come back. I pulled the motor and dropped the bottom of the cases. Shipped the tranny out to them for a pro cut this time and repair. I hope to only miss a week. Time to get out the street bike.

[lecroy]

E, I can only hope that the junk bike is ready when we meet on the battle field. Vids look clean. Nice and soft on the launch. I have a bunch of vids from Prostar of the shoot out bikes. Now that is some scary stuff to watch. I think they are my favorite next to T/F to watch. Then comes the funny bikes.....

Too bad about the shift problems. I assume you are not running an auto shift (not auto trans, don't see any shoes.) with the bumps in the track. I have had/seen so many problems with shifting I am amazed when they work at all...

A few thing I have seen that have caused shift problems but were not the dogs....

Sprocket sensor loose and slid under the shift arm.
Shift arm pin key moved to hit frame and bound.
Slop in arm/cylinder enough that there was not enough travel.
Had to add a small accumulator before the air solenoid.
Seals shot in Bimba.
Air line poped out.
Shift drum adjustment screw not set right.


All of this was very easy to find.... My favorite all time one was when my friends changed from FBG to OEM plates, just to try them. No logger to see what was happening. I pulled my hair out looking at everything from the wiring to the switches, auto and relays. After I had changed pretty much everything, I finally convinced them that the plates were slipping too much between shifts and would not drop the RPM low enough to reset the auto. No way to prove it without the logger, but we changed the plates back and it has been flawless since.

Speak of the devil, we pulled the tranny out of blackey to see what was going on. We broke the chain at the start of the season and have had a growing problem ever since.
Sent it off to Paul and I guess his responce was, Do you want me to just toss this thing into the trash? There was nothing good on it left. KZ trannys don't like to run mid 8's I guess. We shipped down a good GPZ core and just got it back the other day. Should be ready for T&T next Wed. A stock GPZ makes the Suzuki GS tranny look like it was made for a wind-up toy.


I got Evil's DVD the other day. It brought back some great memories from when I was a kid. Only 30 minutes long. Would love to see what these X-game guys would do with a 700cc 1000 lb motorcycle that made maybe 60HP....

[lecroy]

R+D said the damage to the shift fork comes from damage to the dogs. Shipped the tranny out to them for a pro cut this time and repair.

You must have just beat me to the post.... Was the tranny stock? Lastest a long time.

Pro-cut is nice but does remove a lot of material. That one Paul / Kevin did for me has held up very nice. I checked it over the winter and there seems to be little to no wear so far. IMO, any time your taking out material, its not a good thing. If you can shift without the procut for that long of time, why not keep it this way?

Did you send them everything? If the dogs are rounded the rods may be bent too. Lot of force when they try to push apart. Simple check while they have it.

If you are running all stock, something you may want to consider having done. When Paul did that tranny for my stock GS, they hard welded up the dogs then cut them back down. Their claim is that the dogs are stronger than stock after this process. That bike runs in the 11's on a good day and I have not put the tranny in yet so I can't tell you if there are problems in doing this or not. But, I trust Paul's work.

[rosco15]

Mark at R+D said the race cut is better for a street bike while the pro cut is better for a race bike. He ssuggested about 70 milli seconds kill time for a race cut and 50 milli seconds for a pro cut. I had it set at 56. he thinks this may be part of why the dogs got damaged. He suggested going to a pro cut may help with the longevity of the trans. Another words I could keep the kill time the same and not tear up the dogs.

That tranny was the same one I've been running for years. No billet gears it just gets touched up every year or so. I sent the forks, shafts, everything. I also sent a stock tranny for parts.

Are you running a pro cut?

[lecroy]

Mark at R+D said the race cut is better for a street bike while the pro cut is better for a race bike. He ssuggested about 70 milli seconds kill time for a race cut and 50 milli seconds for a pro cut. I had it set at 56. he thinks this may be part of why the dogs got damaged. He suggested going to a pro cut may help with the longevity of the trans. Another words I could keep the kill time the same and not tear up the dogs.
Are you running a pro cut?

I would not fully agree with him. I would NEVER put a pro cut on a street bike because of the backlash. I ride mine in the pits with no problems but the constant hammering of a street bike would do it in. I had asked Paul about decreases the kill time when going from a race cut to a pro cut and he said no. I think the problem is that there is not normally a way to change the kill time based on the shift. 2-3 Auto would be the ticket.

Yes, I am running pro cut with a billet shaft, 2nd and 3rd.

[Baatfam]

As long as your getting it rebuilt...why not go with a 1-2-3 auto?

I love mine...

[rosco15]

I dont like the idea of not being able to get off the gas without doing damage. In the good air when the bike runs in the low 9.30's it does plant the tire down pretty hard on the 1-2 shift. An auto on that first shift would be nice. Plus wasn't there something about not being able to ride an auto trans around. I need to be able to ride it back to the pits.

[lecroy]

This is a closeup of the an kids auto after we pulled it. You can see the reverse cuts in the dogs to help push the gears apart. This is the problem, you get off the gas and there is enough force to bend things...

I know people that do ride them in the pits but I had talked to Paul about it at one time and he was pretty much against it. Suppose if you had a 1-2 you could just ride it in 2nd and be safe.

[lecroy]

This is the last pro-cut that Paul did for the junker bike. This is the same tranny that is in the flag bike except the shaft is a different brand.

You can see how every other dog is removed along with every other slot. A lot of backlash slop if you put it on a street bike.

I would just stay with what you have. It's worked good for you. Not sure why they would need to touch the dogs once a year though.

[Baatfam]

I dont like the idea of not being able to get off the gas without doing damage. In the good air when the bike runs in the low 9.30's it does plant the tire down pretty hard on the 1-2 shift. An auto on that first shift would be nice. Plus wasn't there something about not being able to ride an auto trans around. I need to be able to ride it back to the pits.

That's really just a "might happen" thing....I've back off in second more than once, when things went a little screwy, without a problem.
I think the secret is not to slam the throttle shut...

Worst case, you bend the shift forks...easy enough to pop in a new set...

Later,

[lecroy]

Worst case? I figured worst case was in the middle of a race, you bend a rod and then rather than pull out to fixx it, you keep pushing the bike and now have major damage to the dogs... Pull the motor, split the cases and $500 later (seems like its always $500) you have the tranny back, ready to do it all over again.. LOL.

You coming to the bike race Bob?