4th gear issue with Nitrous

[Kruzer]

Ok here is the set up,
16/45 gearing for the 1/8th.
Stock bore,
extended about 5.5 over,
shinko regular 003 tire,
strapped,
air shifter,
Tech box for enrichment,
#36 jet with a fan nozzle in middle,
small air box mod with BMC filter
and muzzy exhaust.

I weigh about 225 with full leathers

Launching OK with  a 1.55 to 1.62 60 foot.  But when down track will not shift into 4th while spraying, no indication of spinning that I can tell. I have set kill time to max and still happens.

This week I set gearing to 16/40 and spun as soon as I hit the spray (in second) all the way through to the finish (ended up in 6th one time ).  I like the 16/45 gearing cause I suck at launching (the truth doesn't hurt) I am going with a new tire soon, but wondered if anyone experienced the same?

Thaks for any ideas.

Matt

[Rice Ya]

Need to do the Turbo/NOS mod to the shift drum.

[Pat Dietrich]

Bent shift fork , I have the same thing happening without nitrous.

[RJB]

Need to do the Turbo/NOS mod to the shift drum.

what is this mod you talk of

[Kruzer]

Bent shift fork , I have the same thing happening without nitrous.

It only does this with spray though, you think that it could still be the fork?

Thanks for your help

[Kruzer]

Need to do the Turbo/NOS mod to the shift drum.

That's a new one to me,...????

[TOMMY2671]

The problem is by the time you are in 3rd- 4th-5th gear on spray the electrodes on the plugs are glowing and causing pre- ign. detonation, you can either pull more timing out of the bike( will slow down) or take some nos away ( smaller jet).be very careful,we are working on a solution, hopefully we can have one very soon.

[Kruzer]

The problem is by the time you are in 3rd- 4th-5th gear on spray the electrodes on the plugs are glowing and causing pre- ign. detonation, you can either pull more timing out of the bike( will slow down) or take some nos away ( smaller jet).be very careful,we are working on a solution, hopefully we can have one very soon.

Awesome timing, (no pun intended) I just dropped the jet size down, moving from center spray to ram tube as well.


Update, I went to 17/45 gearing .
Replaced #36 jet with #30  (kept in middle but made a holder to raise it up a bit ( sort of like rice ya plate)
WOT swith actication
New 003 tire.
Test on Tuesday night

I'll post my results.

Thanks
Matt

[RJB]

well its thursady whee are the results

[Kruzer]

Not great. Can't launch , seems clutch hand just has a mind of it's own. First run when the Nitrous came on, pulled the front up fast and I let off and sucked that run,
It was so hot I got frusrtated and packed up. May just run the thing without  Nitrous, may just sell the NOS system.

[Kruzer]

Yeah I've cooled down now, think I'll keep and try it again when it cools off outside. Just get frustrated when I get worse instead of better. I've reached a plateau and want to get over it.

Thanks for the advice, I appreciate it.

Matt

[RJB]

well Kurzer at least yours worked
i went to the track friday and could not get no srpay out of it
bottle works seliod works nos controler working but nothing when i go down the track
i will have to take a look at it
when i cool off to

rjb

[Kruzer]

love to see the look on peeps faces when your 9.70 @ 145 turns into a 9.699 @ 155   
seems people get more aw outta trap speeds then et at the strip 

That's very true I noticed that the spectators get into the MPH where us riding look more toward the ET. But I noticed in the 1/8 th a pretty good pick up on the ET with just a few on the MPH. I'll keep at it, if I would just stop messing with the set up long enough to get used to it, I would know where I stand. But I have to tinker all the time, so that is the way it goes