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09-07-2011, 08:12 PM | #287 |
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Great pass Richard! Once again your improvement of 0.738 in ET comes from a 0.346 (massive) improvement in short time. And that's from practice and better rubber (moving from runflats to street radials).
And again, the methanol kit made relatively little difference, 3.45 MPH in trap. Boys and girls, it's all about the short time. To me these results, both on runflats and street radials, means that Richard is the best drag racer on the drag racing standings at the moment by quite a bit.
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.-=[ Kenny ]=-. 1999 BMW M Coupe 10.775 @ 134.35 mph w/1.600 60' (Best 136.07 mph) 25th August 2004. +2010 X5 35D+
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09-07-2011, 08:19 PM | #288 |
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09-07-2011, 08:42 PM | #289 |
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How much extra boost do you run with methanol? Seems like the power is from more boost and the methanol is just providing you with some safety rather than outright power increases. 3.5MPH increase would be around 30kW extra which is OK, but a little less than expected.... could have been the boost drop you experienced (failsafe??).
But the 60 foot is where it is at. That is seriously good and bodes well for those tyres. That is quicker than I got in my WRX with AWD on my 11.3 run. Was there much wheel spin in that run? Did you do a burnout? -- Adrian |
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09-07-2011, 08:48 PM | #290 |
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Yes I do a burnout, not much, if any wheelspin... Not enough for me to remember anyway!
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09-07-2011, 09:23 PM | #291 | ||
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I think with an LSD you will get some of the best 60ft we've ever seen |
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09-07-2011, 09:42 PM | #293 |
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Hahaha yeah I crossed the line and thought maybe he broke down or crashed! I couldn't see him in the rear view mirror... It was a TX3
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09-07-2011, 09:42 PM | #294 | |
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He is still a beginner drag racer. At the moment it's all about the ET for him, hasn't grasped the competition aspect yet. I think he's shown skills though, he should think about competing.
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09-07-2011, 09:43 PM | #295 |
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You still have to remember to separate manual tranny from bleeders. It's a whole other world of difficult to get a MT car out of the hole.
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09-07-2011, 09:52 PM | #296 | |
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Don't want to compete... it's too expensive! Although, I would love to take a manual down there just to show all those MT guys it's not as hard as they whinge about |
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09-07-2011, 10:04 PM | #297 | |||
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09-07-2011, 10:07 PM | #298 | |
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ANDRA competition racers always giggle at people who sit on the line for a long time chasing ET, because they have a different viewpoint. Drag racing is a sport, where the Christmas tree and RT is a huge part of it! It's a whole other set of skills to cut a good light and get out of the hole better than the next guy. And you can only get better at it with practice, so why not start now? Most drag racing classes are not heads up - ie both racers get green lights at the same instant - but are in fact some sort of bracket racing - where each racer nominates a "dialin" and then tries to get as close to that dialin ET as they can without "breaking out" or going quicker than the dialin. You can race your 135 as is as an ANDRA competition vehicle. And IT'S A LOT OF FUN! I actually think you've got the skills to get a great launch out of a manual tranny car too, be great to see what you can do. One thing I know is that after you've tried you'l know what I'm talking about! It's a lot harder.
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09-07-2011, 10:12 PM | #299 | |
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For our street sedans the advantages of an auto tranny vs a manual tranny are far more than what a flat shift function can offer. Having to use clutch to get out of the hole is a huge part of the challenge (and fun) or drag racing a MT car. The PROcede flatshift function is currently not commerically available either, although that may change any time. On my soapbox, I would never use an AT car to "race". You sit at the line, transbrake on and stally flashed. You see the last amber, pop a button and unlock the AT, press your right foot down. And then? You make 3-4 half inch corrections on the steering wheel while sitting otherwise motionless. Yawn.
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09-07-2011, 10:31 PM | #300 |
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Vin, it was close! I did a 12.1** and he did a 12.2** that race. I left a little earlier than he did though and I was maybe 2 car lengths ahead at the end?
Kenny, completely understand how a drag racer thinks and that point of view. If I was in competition, I would think that way too. At a test/tune I don't see the point of trying to properly race someone who a) I don't have any idea how quick they are and b)there is no dial in times to make the race competitive. I love the idea of bracket racing and know how it works. It's funny how a lot of people think an AT is so easy and that it's boring. Maybe after 50+ runs, but for someone who goes 2-3 times a year it's definitely a challenge. Different conditions, different mods etc. On that night, I was doing anything from 12.1 to 12.5. After yesterday, I think shift points play quite a large role in your time too. It's not very often you see a car that is in the 11's or lower that is a manual. Maybe 1-2 cars each meet? 99% of the cars doing 10's or lower are autos. I absolutely respect manual drivers/cars in the 11's or lower. Micha3ls brother in law did an 11.7! (Commodore ute, DR's + NOS) |
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09-07-2011, 11:01 PM | #301 |
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Procede no lift shift feature has not been used in an Australian cars yet to my knowledge. It requires some extra wiring to be added and some settings to be enabled. I plan to add it to a couple of cars shortly. So to date, Justins cars has been driven the old fashioned way, and we are struggling with the 60 foot times as a result. drag radials will come along way to fixing this up. And flat shift should get some extra MPH.
Driving a manual is a significantly greater challenge for drags than than an Auto. I mean for the launch the torque converter sets the launch RPM. For a manual the driver has to do it. For an Auto you cannot bog as the torque converter saves you. For a manual it is impossible to emulate with a clutch what an Auto can do to minimise shock torque loads that cause wheelspin. Then once you are moving, you have to change gears as quick as possible while keeping the turbo spinning as fast as possible. With an AUto you just pull a paddle at a certain RPM. And if you are too slow with an Auto, the box does the job for you. I am not saying that anybody can drive an Auto quick. It takes skill to do it in an Auto. I am just saying that it requires alot more skill to do the same times in a 6MT. Most drivers could do OK in an Auto. Not many can get anywhere near good in a manual. I wish I had a customer car modified like Justins in an Auto. We would be well into the 11s on street tyres. With a 1.7x 60 foot time, Justins car would be 11.6 now without the flat shift etc. |
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09-07-2011, 11:23 PM | #302 |
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Richard yeah totally, my reasons are not to do with engineering, they are purely the purist notion and also .. it's just a lot more fun (imnsho) to shift gears yourself.
Watch me shifting through 5 gears with the OEM BMW manual gearbox and watch the Mopar in the next lane with a tricked auto. See how my car loses momentum on every gear change, both from the throttle and compressor effects. And note how in the higher gears (with less gear shifts per feet travelled) my car eats him up. I did not want to give the impression that drag racing an auto is BORING! God no, it's a Hell of a blast every time you go out, and competing at the lights only adds to it. You are also correct in that, the more times you compete, the more that feeling of isolation or lack of involvement in an auto tranny might bother you. Some also argue that the Group One racecars (other than Pro Stock) are autos. But they aren't! They have to manually select each next gear, usually with the press of an air shifter button. They don't just sit back and wait 6 seconds! Pro Stock use 5 speed gearbox. Watch the shift light. Bleeder.
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09-08-2011, 02:38 AM | #303 |
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09-08-2011, 03:32 AM | #304 |
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I can fairly say it was 98% due to the tyres...
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09-08-2011, 03:42 AM | #305 |
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Disagree, you have talent Richard, the numbers prove it. That's why I've been harping on about drag racing competition ;-)
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09-08-2011, 04:23 AM | #306 |
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Kenny, give me a car to race and I'm in!
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09-08-2011, 06:01 PM | #308 |
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I find that in 1st gear, at least with a manual you have the clutch to use to modulate the power. In Auto, you only have one pedal to use. Some may actually find that harder or easier.
If you have 100% grip and no wheelspin, an auto is a piece of cake. But if there is plenty of wheelspin, I find it would probably be easier to use a manual and use some clutch slip to get off the line. |
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