Page 4 of 9 FirstFirst 12345678 ... LastLast
Results 91 to 120 of 269

Thread: Lightyear's Track MX5 back up car.

  1. #91
    Registered User lightyear's Avatar
    Join Date
    Mar 2010
    Location
    Bentleigh Victoria
    Posts
    3,501
    I am down at the island. Weather is a bit stupid, it rained most of the way down, but not much here. It's humid and now very windy.
    I pushed it on the scales at the track, it weighed 957kg's with over 3/4 fuel - no driver.
    Pretty happy considering it's got a full cage, oem doors with all electrics. I am pretty confident it will be close to 900kg when it's finished.
    On my way back to the house from the track I decided to bed in the brakes so I don't waste a session in the morning.
    Wow, unbelievable how good this car stops. If my commodore could stop like that I would be so happy (and fast).
    It's running stock brakes all round, braided brake lines and Hawk Blue pads. With another 50kgs out of it and a good aero package this is going to be one awesome endurance race car. I hope to crack a 1:53 tomorrow morning. But will settle for a trouble free day.
    Last edited by lightyear; 11-02-18 at 07:28 PM.

  2. #92
    Registered User sleepwhendead's Avatar
    Join Date
    May 2016
    Location
    Nowhere
    Posts
    163
    I really dig the hard top.

    Makes me think about the old bullet mx5s and how good they would have looked with something similar

  3. #93
    Registered User lightyear's Avatar
    Join Date
    Mar 2010
    Location
    Bentleigh Victoria
    Posts
    3,501
    Cheers, I will have one on all my cars. I never bought the MX5 for the soft top, they are a great, cheap, fun little car that can embarrass plenty of "better" cars on the track.
    I have washed it and mounted the camera and data logged gear. All set for the morning.


  4. #94
    Opens Guido's Avatar
    Join Date
    Nov 2001
    Location
    In my Den of Sin??
    Posts
    8,413
    What camera and data logger gear do you use?
    Rust is lighter than carbon fibre.

    My Italian 510

  5. #95
    Registered User lightyear's Avatar
    Join Date
    Mar 2010
    Location
    Bentleigh Victoria
    Posts
    3,501
    Just a GoPro camera. Data logger is my old phone with RaceChrono app, and a transponder to speed up the signal to get accurate data. Total cost for data logging was $50. Gives all info except G's. Even has sectors with a green or red box that you can easily see. Green means fastest time in that sector.

  6. #96
    Registered User lightyear's Avatar
    Join Date
    Mar 2010
    Location
    Bentleigh Victoria
    Posts
    3,501
    The car had an issue with fuel pick up, so I kept the tank full. But otherwise the car was amazing.
    It's so much fun driving a slow car fast, holding flat at 196km/h into turn 1 and not lifting until turn 2 entry. I struggled to go under 1:53 most of the day, but got a best of 1:52.6. The tyres are too old and bald to keep it under a 1:53 consistently, it takes some big balls or stupidity to push it that hard. I had a ball, and that's why it's so hard to get away from these cars.
    And... The car did 44 laps today. That's about 1.5hrs on the track flat out. Very good value.
    Last edited by lightyear; 11-02-18 at 03:52 PM.

  7. #97
    Registered User lightyear's Avatar
    Join Date
    Mar 2010
    Location
    Bentleigh Victoria
    Posts
    3,501
    Here is a dodgy video showing the almost flat line around turn 1. What it doesn't show is how exciting it feels to be on the limit at close to 200km/h with 3 year old bald R specs and no wing.It did step out once when the Chief was behind me in his Skyline. He said he saw it leave 2 big black lines as the yaw angle exceeded the normal limits.
    The reason the speed drops even holding it flat is due to tyre scrub.
    Last edited by lightyear; 11-02-18 at 06:29 PM.

  8. #98
    Registered User lightyear's Avatar
    Join Date
    Mar 2010
    Location
    Bentleigh Victoria
    Posts
    3,501
    Another quick dodgy video of T1. #neverbackoff
    NA8B 89KW- P.I. 1:50.1, WNTN1:38.0, SDWN 1:27.6, WKFLD 1:10.4
    NB8B 181KW- P.I 1:43.8, WNTN 1:32.9, SDWN 1:22.0, BDFD 1:05.3
    VP 293KW- P.I 1:43.8 WNTN 1:33.5

  9. #99
    Registered User THE CHIEF's Avatar
    Join Date
    Nov 2016
    Location
    Melbourne
    Posts
    338
    I can confirm this man is a freaking lunatic and was sideways at 190+ km/h leaving 2 black lines through turn 1, pure insanity.

    I thought i captured the footage on my cam but unfortunately i forgot to turn the bloody thing on. Soz lightyear.

  10. #100
    Registered User lightyear's Avatar
    Join Date
    Mar 2010
    Location
    Bentleigh Victoria
    Posts
    3,501
    Pity you have no video. Maybe it's time for some new tyres. It's amazing how much grip difference there is between the two rear tyres. It does erk me not having a faster car on the day, as in one of the turbo MX5's or even the Commodore. This is my slowest track car after all. But to get a 1:52 on its first outing with basic mods shows I know how to get these cars to work. Most MX5 guys spend a long time trying to crack the 2:00 minute mark.
    NA8B 89KW- P.I. 1:50.1, WNTN1:38.0, SDWN 1:27.6, WKFLD 1:10.4
    NB8B 181KW- P.I 1:43.8, WNTN 1:32.9, SDWN 1:22.0, BDFD 1:05.3
    VP 293KW- P.I 1:43.8 WNTN 1:33.5

  11. #101
    Registered User THE CHIEF's Avatar
    Join Date
    Nov 2016
    Location
    Melbourne
    Posts
    338
    Shows that you also really know how to drive. Thanks for letting me follow you and showing me some interesting lines. You definitely use every millimetre of the track and then some. No ripple strip or grass blade is safe. That thing is lightning on turns but looks like brakes on down the straight.

    I finished the day with a best of 1.53 4 which is a pb for me. Im happy with that. The laps i was following you i did a 53.7 but race chrono showed a theoretical best of 52.5. So your lines definitely helped me, i was just losing time down the straight trying not to pass you, lol.

  12. #102
    Registered User lightyear's Avatar
    Join Date
    Mar 2010
    Location
    Bentleigh Victoria
    Posts
    3,501
    It's never going to be a straight line car. But it's going to cut some quick laps for a 90kw car when it's finished. My goal is sub 1:50 with no engine or ECU mods.
    You can start guessing my sanity now. After all that work getting the car back together I do this.


    It was about 2:00pm today (Sunday arvo), I thought I should jack the car up so it might motivate me to work on the car when I get spare time. I ended up stripping it in about an hour including the fiddly little bits. Went out for a bit, did dinner, then thought I might do a bit more. 4 hours later, it's fully masked, sanded and ready for paint.
    Pity I can't just get onto it as I have other work to do
    But I might have some time after lunch or maybe dinner tomorrow to lay the paint on.
    I have too many cars to work on, plus houses. So figured I will try and do nights in the garage till 10 or so until I get fatigued. It's the only way things are going to get done. A solid 4 hours after dinner each night makes a massive difference.
    Last edited by lightyear; 18-02-18 at 08:48 PM.
    NA8B 89KW- P.I. 1:50.1, WNTN1:38.0, SDWN 1:27.6, WKFLD 1:10.4
    NB8B 181KW- P.I 1:43.8, WNTN 1:32.9, SDWN 1:22.0, BDFD 1:05.3
    VP 293KW- P.I 1:43.8 WNTN 1:33.5

  13. #103
    GTFO of my ED doctor ed's Avatar
    Join Date
    Jun 2002
    Location
    irgendwo
    Posts
    4,374
    Quote Originally Posted by lightyear View Post
    I am down at the island.
    dont you mean across at the island?
    Mit freundlichen Gre

    Quote Originally Posted by Keith Duckworth View Post
    "I think that in a racing engine, the closer it is to disintegrating, in general the better its performance will be "

  14. #104
    Registered User lightyear's Avatar
    Join Date
    Mar 2010
    Location
    Bentleigh Victoria
    Posts
    3,501
    Could be, lol. It is south from here. It's actually a huge J shape to drive there because of the (flat water). If only it was a more direct run. It's about 1.5 hours from my place.
    NA8B 89KW- P.I. 1:50.1, WNTN1:38.0, SDWN 1:27.6, WKFLD 1:10.4
    NB8B 181KW- P.I 1:43.8, WNTN 1:32.9, SDWN 1:22.0, BDFD 1:05.3
    VP 293KW- P.I 1:43.8 WNTN 1:33.5

  15. #105
    Registered User lightyear's Avatar
    Join Date
    Mar 2010
    Location
    Bentleigh Victoria
    Posts
    3,501
    It had to be the windiest day. I thought it might slow down, so started late this arvo, only to have dust and dirt blow around and under the garage door. :/
    I have washed down all the other body parts ready to sand.

    For now it can cure before I do anything else to it. And black is a shit of a colour to photograph.

    Last edited by lightyear; 19-02-18 at 08:31 PM.
    NA8B 89KW- P.I. 1:50.1, WNTN1:38.0, SDWN 1:27.6, WKFLD 1:10.4
    NB8B 181KW- P.I 1:43.8, WNTN 1:32.9, SDWN 1:22.0, BDFD 1:05.3
    VP 293KW- P.I 1:43.8 WNTN 1:33.5

  16. #106
    Registered User lightyear's Avatar
    Join Date
    Mar 2010
    Location
    Bentleigh Victoria
    Posts
    3,501
    ..
    NA8B 89KW- P.I. 1:50.1, WNTN1:38.0, SDWN 1:27.6, WKFLD 1:10.4
    NB8B 181KW- P.I 1:43.8, WNTN 1:32.9, SDWN 1:22.0, BDFD 1:05.3
    VP 293KW- P.I 1:43.8 WNTN 1:33.5

  17. #107
    Registered User lightyear's Avatar
    Join Date
    Mar 2010
    Location
    Bentleigh Victoria
    Posts
    3,501
    I bolted the inner half of the carbon fibre doors on and took a quick video. There will be a few hours getting them finished with windows, frames, etc.

    Last edited by lightyear; 22-02-18 at 04:26 AM.

  18. #108
    Registered User lightyear's Avatar
    Join Date
    Mar 2010
    Location
    Bentleigh Victoria
    Posts
    3,501
    I made a window frame and door "handles" for each door. You might need to zoom in to see the "handle". I will make a large ~50mm hole in the window so it can be used from the outside as well.

    NA8B 89KW- P.I. 1:50.1, WNTN1:38.0, SDWN 1:27.6, WKFLD 1:10.4
    NB8B 181KW- P.I 1:43.8, WNTN 1:32.9, SDWN 1:22.0, BDFD 1:05.3
    VP 293KW- P.I 1:43.8 WNTN 1:33.5

  19. #109
    Pro Game Dev (pennywise)'s Avatar
    Join Date
    Jul 2002
    Location
    Brisbane
    Posts
    1,262
    After reading about your carbon stuff you make, I'm keen to start doing something like this to my ND
    No Power chips thanks

  20. #110
    Registered User lightyear's Avatar
    Join Date
    Mar 2010
    Location
    Bentleigh Victoria
    Posts
    3,501
    Taking weight out is the best mod. And an ND would be an a great car with 50kg or more removed. I loose about 60kg's on my MX5 just from the 2 doors and roof. Actually even more because the boot gets swapped, and I unbolt the complete boot hinge assembly as well. More like 65-70kg's. This car even with aero should weigh under 900kg's, I hope. Not crazy light, but they are a heavy chassis, plus the full cage isn't light.
    NA8B 89KW- P.I. 1:50.1, WNTN1:38.0, SDWN 1:27.6, WKFLD 1:10.4
    NB8B 181KW- P.I 1:43.8, WNTN 1:32.9, SDWN 1:22.0, BDFD 1:05.3
    VP 293KW- P.I 1:43.8 WNTN 1:33.5

  21. #111
    GTFO of my ED doctor ed's Avatar
    Join Date
    Jun 2002
    Location
    irgendwo
    Posts
    4,374
    This is exactly the skill set lacking in my project
    Mit freundlichen Gre

    Quote Originally Posted by Keith Duckworth View Post
    "I think that in a racing engine, the closer it is to disintegrating, in general the better its performance will be "

  22. #112
    Registered User lightyear's Avatar
    Join Date
    Mar 2010
    Location
    Bentleigh Victoria
    Posts
    3,501
    Youtube is your friend. There are more than enough YouTube videos on making carbon fibre parts. The trickiest part is imagining the resin flow and getting good vacuum. Once you have done a few different things you get pretty good at it.
    You can hand laminate parts, and if using epoxy resin instead of the cheap stuff, you can still get a good product. The trick is to use the least amount of resin possible. I made a carbon fibre hardtop using the hand laminated method to see the difference. It wasn't that much heavier, but didn't sound as tight when you tap on it. So less than half the work as you don't need to build up all the vac layers and seal it, with about 20% weight penalty. Also, with hand laminating, you can't get the cloth into every corner, so won't be a perfect finsh.
    I am actually going to make a carbon fibre fastback for myself soon, but doing it at the shop (couldn't be bothered bringing the pump and gear). I plan on painting it, so will get sandable primer gel coat applied to the mould, then use a bit of filler in the tight corners where air bubbles most likely will form, and hand laminate carbon fibre with a soric core. Will be a good compromise. Probably weigh 3-4 kg's, where a vac infused would weigh 2-3kg's.
    NA8B 89KW- P.I. 1:50.1, WNTN1:38.0, SDWN 1:27.6, WKFLD 1:10.4
    NB8B 181KW- P.I 1:43.8, WNTN 1:32.9, SDWN 1:22.0, BDFD 1:05.3
    VP 293KW- P.I 1:43.8 WNTN 1:33.5

  23. #113
    SKYHI Motorsport TCR's Avatar
    Join Date
    Jul 2006
    Location
    Brisbane
    Posts
    2,523
    Nice work on the CF doors.
    2015 Skoda Octavia RS162TSI
    2004 MX5 SE Turbo
    2016 Toyota 86 GTS (No Pics)

  24. #114
    Opens Guido's Avatar
    Join Date
    Nov 2001
    Location
    In my Den of Sin??
    Posts
    8,413
    I'm getting kind of tempted to buy a cheap Nb to throw some shocks and tyres on just so I can get some seat time without wasting cubic $ on race tyres for the sports sedan. What shocks do you tend to use?
    Rust is lighter than carbon fibre.

    My Italian 510

  25. #115
    CNGAF rowdytoot's Avatar
    Join Date
    Nov 2001
    Location
    hotel vast horizon
    Posts
    9,975
    Quote Originally Posted by lightyear View Post
    Youtube is your friend. There are more than enough YouTube videos on making carbon fibre parts. The trickiest part is imagining the resin flow and getting good vacuum. Once you have done a few different things you get pretty good at it.
    You can hand laminate parts, and if using epoxy resin instead of the cheap stuff, you can still get a good product. The trick is to use the least amount of resin possible. I made a carbon fibre hardtop using the hand laminated method to see the difference. It wasn't that much heavier, but didn't sound as tight when you tap on it. So less than half the work as you don't need to build up all the vac layers and seal it, with about 20% weight penalty. Also, with hand laminating, you can't get the cloth into every corner, so won't be a perfect finsh.
    I am actually going to make a carbon fibre fastback for myself soon, but doing it at the shop (couldn't be bothered bringing the pump and gear). I plan on painting it, so will get sandable primer gel coat applied to the mould, then use a bit of filler in the tight corners where air bubbles most likely will form, and hand laminate carbon fibre with a soric core. Will be a good compromise. Probably weigh 3-4 kg's, where a vac infused would weigh 2-3kg's.
    Wanna make me one too?

    1998 MX5 - Ohlins DFV coilovers, Roll bar,15 x7.5 Konig Litespeeds, Mania Intake
    2014 Colorado LT - Oversized Whitegoods. Kid/bike/track hack/horse hauler.

  26. #116
    Registered User
    Join Date
    May 2002
    Location
    Brisbane
    Posts
    7,151
    Quote Originally Posted by Guido View Post
    I'm getting kind of tempted to buy a cheap Nb to throw some shocks and tyres on just so I can get some seat time without wasting cubic $ on race tyres for the sports sedan. What shocks do you tend to use?
    Just buy a set of MCAs.
    15x8 wheels with some 225 semis and probably slight guard roll.
    And at least a off the shelf rollbar

  27. #117
    Pro Game Dev (pennywise)'s Avatar
    Join Date
    Jul 2002
    Location
    Brisbane
    Posts
    1,262
    yeah mate, 50kg's would make a massive differents, and now with the turbokit even better
    No Power chips thanks

  28. #118
    Opens Guido's Avatar
    Join Date
    Nov 2001
    Location
    In my Den of Sin??
    Posts
    8,413
    MCAs are awesome and all, but more thinking BCs for such shenanigans and Nankang AR1s on original wheels, 195-50-15. The main use for the car would be "training" for want of a better word. So cheap and consistent rather than spending 3 times as much for a 10-15% better result. That's what the SS is for.
    Rust is lighter than carbon fibre.

    My Italian 510

  29. #119
    Registered User PXL265's Avatar
    Join Date
    Nov 2012
    Location
    Brisvegas
    Posts
    1,957
    Yeah a set of BC V1's worked fine on my na6, I found the next step up was too stuff for what I wanted. But any if the bc's are good value for what you get.

    Also throw a set of bushes at the suspension to get everything working again as it should. Most people don't and at 20 or so years old it won't hurt.

    Sent from my XT1635-02 using Tapatalk

  30. #120
    CNGAF rowdytoot's Avatar
    Join Date
    Nov 2001
    Location
    hotel vast horizon
    Posts
    9,975
    Quote Originally Posted by Guido View Post
    MCAs are awesome and all, but more thinking BCs for such shenanigans and Nankang AR1s on original wheels, 195-50-15. The main use for the car would be "training" for want of a better word. So cheap and consistent rather than spending 3 times as much for a 10-15% better result. That's what the SS is for.
    I'd go to yellowspeeds for about the same $$ as BCs if track is the focus..

    1998 MX5 - Ohlins DFV coilovers, Roll bar,15 x7.5 Konig Litespeeds, Mania Intake
    2014 Colorado LT - Oversized Whitegoods. Kid/bike/track hack/horse hauler.

Posting Permissions

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