Tom, try and record an inside video next time! That'd be awesome
Maybe it will give people more of an idea what is going on from your perspective too

 

Subscribed. Great thread to learn from.

 

thanks for all the great information everyone. its greatly appreciated.

 

Anytime Tom! I wana see this car in action at the track!

 

Tom, see the attached chart for a close estimate of what your RPM would be at various trap speeds.

Your low tire pressure wasn't helping with the trap speed. Less tire pressure usually increases the size of the tire contact patch with the road. A larger contact patch means that there is more mechanical rolling resistance which results in lower trap speeds.


Dan (drb)

 

Looks like you can't launch or shift.

I cut 1.60's on 245 RE-01Rs in October in the PNW... it was cold.
I ran 11.1@129mph making 540 whp. (3440... full weight)

My 1-2 shift HAD issues because of the clutch and I couldn't shift any faster. Your 1-2, 2-3, and even 3-4 shifts are prolonged.

people are suggesting short shifting the 1-2 shift because your transmission can synchronize the shift better at lower engine speeds. Has a lot to do with the MOI of the clutch assembly. I assume you're using a Exedy triple instead of a 7.25" clutch?

it looked to me like you were spinning off the line pretty hard and not riding the clutch out of the hole, but then again...it's a video.

Keep doing it and you'll get the hang of it.

 

The shifting is what is really killing you. It is painfully slow.

Like what Eric said above, it is better to shift the 1-2 a bit early. Becomes much harder above 7krpm and if you do it fast, you won't drop out of power.

My advice is to meet up with someone who can drag race the crap out of an evo. Have them do a rolling start in your car and show you how fast you can really shift these things.

 

http://www.youtube.com/watch?v=y7D6mCw-Vvc

Here's a fine example. This gent is obviously using NLTS. I don't use NLTS so I can't shift 1-2 as fast, but I can shift as fast 2-3 and 3-4.

 

he NLTS without the thepra file

 

I wasn't saying that he was using the tephra mod, just saying he was using the NLTS technique.

 

I agree that your shifting is slow, but also that it looks like you're treating the clutch like an on/off switch. Don't be afraid to slip the clutch out slowly. Your clutch can handle it as long as you're not driving around with it half engaged all the time. Watch out for wheel hop since you're on street tires, too.

Practice slipping the clutch out and good luck! I don't see any reason you can't hit high 130s with the car as it is. 137-138.

 

I did 1.70 60ft at the shootout and that was the first time i ever was on a real drag strip in my life and the car went 11.3 @ 121 and that was with hesitating to shift into 4th and then i road 4th to 8k then shifted to 5th.. so that alone tells me the car is easy 10's on a good prepped track.. not to mention that was also with 30 gallons of e85 i didn't remove from the trunk. so the car is EASY 10's on street tires.

I don't think my shifting was as slow as the videos making it seem.. i was chirping up to 3-4th gear.. to chirp awd dont you have to shift quickly? i may of been taking it alittle easy because of what happened to me in Ohio with the wedge collar popping off though.

I think with no lift to shift enabled it will at least put me in the range of the average shifters as far as speed goes.. but yes im def not a quick shifter. im more conservative on the gear box.. i guess i owned to many dsm's.

it is an exedy triple HD. i was getting some grind in 3rd gear with the clutch all the way to the floor..

thats another thing.. when i shift, i push the clutch all the way to the floor.. thats another habbit that i dont think i can get away from.. that there is time delayed also.

i was slipping the clutch properly, it is just the track sucked.. Ohio was like glue compared to this track. even setting the stationary limit to 5200 it still spun 1st hard. i guess if i controlled the throttle i could of got it to hook? im not experienced enough to use throttle control during a launch (never tried it)

if i would of done another 5 more passes or so i believe i could of gotten a 11 flat.. but that day i don't believe i could of gotten a 10 so i just quit.. i was also getting low on oil so i just stopped. plus i drove the car to the track and didnt wanna break it, and after 6 passes i figured that was good enough.

put it this way.. if i go on certain road where i live and duplicate the 1/4 pass i get the same traction as i did at the track on regular road.. the track prep was non existent. there was 9 sec cars there almost hitting the wall that said they never have issues usually.

 

hes speed shifting? ya thats fast as hell. im def no where near that quick LOL.

next time i go to track i will video how i shift in car so theres a better perspective towards
what im doin.

 

i do slip it, .. but from what ive experienced at the shootout, the longer i slipped the clutch the more it spun at launch. when i didnt slip much at the shootout it was instant grip.. maybe it was because i raised the 2step tho that it spun worse the 2nd time?

also.. i think what David was implying was.. a really good driver can Slip the clutch and if its still spinning they will go in and out with the clutch until it grabs just right? that there i def never tried.. but i can see how it would work. that would take precision quickness.

 

ya you guys are right .. the shifting is pretty bad. it looks like its dropping to 6k from over 8000rpm.. i didnt think i sucked that bad. :/

heres the log of one run

http://www.tscomptuned.net/rom/EvoSc...----forum.xlsx