• Angry
  • Awesome
  • Hungry
  • Secret
  • Page 2 of 3 FirstFirst 123 LastLast
    Results 11 to 20 of 23

    Thread: HOW do you drag?

    1. #11
      Being Tooner!
       
      Awesome
       
      MSW's Avatar
      Join Date
      Apr 2015
      Location
      Dehradun
      Posts
      158
      Quote Originally Posted by KimiRaikkonen View Post
      Have you watched this video ? Moreover at 9:30 he says not to launch the car.
      Yeah. He is in my sub list.

      Okay I have drawn two things out from the discussion here-

      One, wheelspin is good cos it dissipates destructive energy.

      Two, my initial method was good, just needs some tweaks. That method will keep the trans safe.

      Conclusion- launch should be gentle and we should work WITH the trans, not AGAINST it.

      I do have a theory for the upshifting, and it may sound far-fetched, but bear with me.

      Now, a flatshift plainly just destroys the transmission cos we already have so much on the drivetrain and the engine at boiling point does not help the case either.

      double clutching wears the clutch out faster. So lets combine the two.

      This involves the knowledge of where the revs will land after the upshift.

      So, I engage the clutch, and while I'm selecting second, I ease of the throttle to that part of the rev range (meaning, if the second gear drops me to 4000 from 6000, I ease off the throttle such that it does not go beyond 4000, but stay on it) and let the clutch go completely while staying at the given RPM. Gearbox and engine is in sync.

      We have equilibrium. Full throttle.

      MSW
      Celebrating the thrill of driving, one dent at a time

    2. #12

      Throttle the HP
       
      Awesome
       

      Join Date
      Jul 2016
      Location
      Bangalore
      Posts
      50
      Quote Originally Posted by MSW View Post
      f the second gear drops me to 4000 from 6000, I ease off the throttle such that it does not go beyond 4000, but stay on it
      It's called rev matching, check out the videos in the link below if it can help you understand better.


      Part 1:



      Part 2:


    3. #13
      Being Tooner!
       
      Awesome
       
      MSW's Avatar
      Join Date
      Apr 2015
      Location
      Dehradun
      Posts
      158
      That is on downshift. I do rev matching and heel-toe all the time. Just applying these principles to upshifting.

      Sent from my SM-G570F using Tapatalk
      Celebrating the thrill of driving, one dent at a time

    4. #14

      It's not how fast you drive.
      It's how you drive fast.
       
      Awesome
       
      megazoid's Avatar
      Join Date
      Feb 2012
      Location
      Bangalore
      Posts
      1,445
      MSW

      Interesting and fun topic. Could you please post a video of some these launches. I know filming can be tad tricky but if its possible, could you manage a pedal view?

    5. #15
      Being Tooner!
       
      Awesome
       
      MSW's Avatar
      Join Date
      Apr 2015
      Location
      Dehradun
      Posts
      158
      Okay lemme see what I can do.

      Sent from my SM-G570F using Tapatalk
      Celebrating the thrill of driving, one dent at a time

    6. #16
      Brio SMT
       
      Secret
       
      KimiRaikkonen's Avatar
      Join Date
      Aug 2016
      Location
      Noida
      Posts
      684
      Quote Originally Posted by MSW View Post
      Yeah. He is in my sub list.

      Okay I have drawn two things out from the discussion here-

      One, wheelspin is good cos it dissipates destructive energy.

      Two, my initial method was good, just needs some tweaks. That method will keep the trans safe.

      Conclusion- launch should be gentle and we should work WITH the trans, not AGAINST it.

      I do have a theory for the upshifting, and it may sound far-fetched, but bear with me.

      Now, a flatshift plainly just destroys the transmission cos we already have so much on the drivetrain and the engine at boiling point does not help the case either.

      double clutching wears the clutch out faster. So lets combine the two.

      This involves the knowledge of where the revs will land after the upshift.

      So, I engage the clutch, and while I'm selecting second, I ease of the throttle to that part of the rev range (meaning, if the second gear drops me to 4000 from 6000, I ease off the throttle such that it does not go beyond 4000, but stay on it) and let the clutch go completely while staying at the given RPM. Gearbox and engine is in sync.

      We have equilibrium. Full throttle.

      MSW
      It depends on cars. Just know your car limit and I do not think you should be too aggressive. For example my car 1st and even 2nd gear is pretty short so I do not think revving it much make sense and will hurt the transmission.

    7. #17
      Being Tooner!
       
      Awesome
       
      MSW's Avatar
      Join Date
      Apr 2015
      Location
      Dehradun
      Posts
      158
      well, as promised, here is a run. Doing a zip file cos I am not ready to start youtubing yet. My friend drove this time because he was eager to do this. So I obliged

      Run1.zip

      I fumbled with the clock while timing in the video but guesstimated it around 12. Well, I came back and did a detailed re-time again with these points- There is a slight delay between me saying GO and the launch actually taking place, so I started the clock from when the wheelspin starts, and it ends as soon as he says 100. With that in mind I came at 11.36 secs. Well this goes to verify that an aggressive launch is faster. PS- this is the way I drag, that is why I let him drive cos our styles are the same.

      Could not get a foot cam because I could not find anything to wedge the phone in.

      Free to re-time if unconvinced.

      And as for my theory, I am putting it into practice. For now this means feathering the throttle while upshifting at 2000 RPM(because fuel bill), and it more or less bombs. The jerking will subdue as I learn better feathering

      Will post another video when I'm confident with the technique.

      MSW
      Last edited by MSW; 21st Dec 2017 at 21:50.
      Celebrating the thrill of driving, one dent at a time

    8. #18
      Support Donkey
      Turbo Lag - Giving the NA guys
      just 1 extra second of false
      hope :p
       
      Awesome
       
      mclaren1885's Avatar
      Join Date
      Oct 2009
      Location
      Bangalore
      Posts
      23,203
      Quote Originally Posted by MSW View Post
      so I started the clock from when the wheelspin starts, and it ends as soon as he says 100. With that in mind I came at 11.36 secs.
      Use some GPS based device to clock your 0-100s. Speed readings are almost always in accurate and could put you out by nearly a second or more. If it's a ECU post 2010, you can connect a OBD reader, get Torque Pro and use that to time your 0-100s perhaps.

      Happy practicing. Hope you've saved up money for a new clutch
      2002 Tata Indica DLS.
      2004 Suzuki Zen - A G13B eater.
      2005 Suzuki Baleno - India's fastest Naturally Aspirated Baleno timed on a drag strip officially!
      2008 Suzuki Swift VDi - The Rattle King.
      2011 Chevrolet Cruze - The Torque Monster.
      2016 Ford Ecosport 1.5 TDCi Titanium - The SQ Machine in the making.
      2017 Skoda Octavia VRS - A 400+HP corner craving machine!
      2013 BMW X1 - The RWD Sideways Machine
      2019 Polo GT TSI - The Commute Workhorse.
      2014 MOC SQ Pro Champions.
      Harmonixx Tuning - Importers for Audiofrog & Arc Audio/APR Tuning Authorized Dealers/Engine Remap Specialists for all makes/models.
      Dealers for Rainbow/Mosconi/Eton/Stetcom/Tru Technology/Blam Audio/Mobridge/Stetsom/Audible Physics/AIV/Gladen/Dampmat/Dr Artex Damping and more.

    9. #19
      Being Tooner!
       
      Awesome
       
      MSW's Avatar
      Join Date
      Apr 2015
      Location
      Dehradun
      Posts
      158
      Thank you Mclaren.

      No more launches till next month. So clutch stays safe.

      My ECU is bang-smack 2010.

      I think to use torque pro I will have to take an OBD device. Which one is best?

      Just because I drag does not mean I'm a gear-mongering, transmission-destroying, Clutch-blowing massochist.

      MSW
      Celebrating the thrill of driving, one dent at a time

    10. #20
      Brio SMT
       
      Secret
       
      KimiRaikkonen's Avatar
      Join Date
      Aug 2016
      Location
      Noida
      Posts
      684
      I have seen people using something called v-box. May be make a youtube video using that while showing tachometer so other dzire petrol user can comment and compare lol. Also weight matters so you can get slightly better time without having 2 people in car.
      Last edited by KimiRaikkonen; 22nd Dec 2017 at 10:55.

    Page 2 of 3 FirstFirst 123 LastLast

    Thread Information

    Users Browsing this Thread

    There are currently 1 users browsing this thread. (0 members and 1 guests)

    Similar Threads

    1. Drag reduction
      By derfaultier in forum Technical Discussions
      Replies: 5
      Last Post: 16th Sep 2013, 22:50
    2. !!! Db Drag !!!
      By LBM in forum ICE News & General Discussions
      Replies: 28
      Last Post: 28th Sep 2012, 13:42
    3. Replies: 3
      Last Post: 14th Dec 2011, 19:51
    4. Drag FAQ
      By hrag in forum Drag Racing
      Replies: 23
      Last Post: 24th Sep 2010, 10:17
    5. My"DRAG" to the Drag
      By bigmoose in forum Travelogues
      Replies: 38
      Last Post: 30th Nov 2009, 15:53

    Bookmarks

    Posting Permissions

    • You may not post new threads
    • You may not post replies
    • You may not post attachments
    • You may not edit your posts
    •