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Thread: Lightyear Composites

  1. #31
    Registered User lightyear's Avatar
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    They are small cars, that's why I like them. Less weight, small frontal area, etc. I can just fit in with standard seats. The trick is to fit a race seat and bolt it straight to the floor. Have you driven one? They feel so different when you hook it into a corner, even turning into a street at an intersection is noticeably different to a normal car.
    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 1:46.0 WNTN 1:33.5

  2. #32
    GTFO of my ED doctor ed's Avatar
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    still in for a dual element wing

    fortunately my car is progressing as slowly as your composites development... we're neck and neck
    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 "

  3. #33
    Registered User glenn's Avatar
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    Updates? I see on FB you got some foam cut.

  4. #34
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    You doing a fastback for the new model mx-5 ?
    ......................

  5. #35
    Registered User lightyear's Avatar
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    I have everything to make the wings now. I dicked around today making the curved alloy pieces for the wing mounts. Let me know you width and wing mount spaces. I will make one over the weekend to work out prices more accurately.

    No new model fastbacks are on the drawing board as yet.
    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 1:46.0 WNTN 1:33.5

  6. #36
    Registered User lightyear's Avatar
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    My engineer wants me to beef up the mounts. He said they should be 2.5 times stronger than necessary. So will order some thicker plates, it's easy now that the drawings are done.
    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 1:46.0 WNTN 1:33.5

  7. #37
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    Quote Originally Posted by lightyear View Post

    No new model fastbacks are on the drawing board as yet.
    know anyone that does a fastback for em ?
    ......................

  8. #38
    Registered User lightyear's Avatar
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    I refinished the fastback roof and boot as well the internal frames after they had sustained some damage and lost some of there size due to over sanding from the last guy. They are all at the new place ready to go.

    Last edited by lightyear; 13-10-17 at 06:52 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 1:46.0 WNTN 1:33.5

  9. #39
    Registered User lightyear's Avatar
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    I don't think anyone has done a fastback for the ND yet. I might look into it one day.
    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 1:46.0 WNTN 1:33.5

  10. #40
    GTFO of my ED doctor ed's Avatar
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    I'll measure up widths and let you know
    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 "

  11. #41
    Registered User glenn's Avatar
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    Quote Originally Posted by lightyear View Post
    I have everything to make the wings now. I dicked around today making the curved alloy pieces for the wing mounts. Let me know you width and wing mount spaces. I will make one over the weekend to work out prices more accurately.

    No new model fastbacks are on the drawing board as yet.
    I will measure up mount spaces shortly

  12. #42
    Registered User glenn's Avatar
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    PM sent

  13. #43
    GTFO of my ED doctor ed's Avatar
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    Ps, saw the pics on facepalm... you only doing the one 30cm chord at present? No chance you can get couple of secondary smaller flap chords? Say like a 120mm SM101 profile?

    Also, which profile did you 'lend' for the 30cm profile you've got?

    Edit, overwhelmingly large database here: http://m-selig.ae.illinois.edu/ads/c...atabase.html#S
    Last edited by doctor ed; 14-10-17 at 10:53 PM.
    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. #44
    Registered User lightyear's Avatar
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    I do have the moulds and bits to make the second element as well. It's the SM183 profile. I made the wing from scratch originally from online images. That's the one I did the 1:43 at Phillip Island with. But I needed a wider mould, so started again.
    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 1:46.0 WNTN 1:33.5

  15. #45
    GTFO of my ED doctor ed's Avatar
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    had a look, id be after 168cm width, with mounts 92cm apart.

    ideally id be after 1x 30cm chord, and 2x 12cm chords - planning a dual element upper deck (maybe with active second element), and a lower deck chord to help pump the diffuser.

    planning something like this...



    alternative incarnation making the lower chord smaller between the mounts. will make the whole thing perhaps a little less bulky and offensive on the eyes (still with the dual element upper deck though):

    Last edited by doctor ed; 15-10-17 at 10:13 PM.
    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 "

  16. #46
    Registered User lightyear's Avatar
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    I think you may as well go with the full width one. I don't find it offensive. Just hope you can balance out the front aero.
    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 1:46.0 WNTN 1:33.5

  17. #47
    GTFO of my ED doctor ed's Avatar
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    I can add and remove the flaps as we go. As mentioned, figured I can mount them from the end plates, so simple bunch of laser cut end plates in different configurations, and suddenly have infinite wing combinations
    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 "

  18. #48
    Opens Guido's Avatar
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    Quote Originally Posted by Fondles View Post
    know anyone that does a fastback for em ?
    No fastbacks but there is an AM hardtop for them now. http://www.good-win-racing.com/Mazda...t/61-2024.html

    Would look tops as a fastback, especially if you could get the lines to flow like the 124 spider/coupe renderings.
    Rust is lighter than carbon fibre.

    My Sports Sedan

  19. #49
    Registered User lightyear's Avatar
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    Taking a break from the AU on gas in space thread, it's hard work keeping it up.
    I thought I should update this. The NB fastbacks are being made, finally. It's taken forever. Just waiting on the windows to be supplied, should be Tuesday. And I put one of the new fastbacks on an NA to make the boot to suit the older shape car.
    This time I included a boot spoiler built in. It will suit the shape so much better than the squarer boot of the early MX5's.
    So that is now getting moulded as well.
    Not sure if I mentioned it, but I stripped an MX5 hardtop, moulded the outside, and remade the inner frame to suit generic automotive rubbers and get rid of any gaps that will cause wind noise or water entry.
    So many hours involved.
    Here is a sneak peak.



    I have also prepped the wing mould for the main element, I wasn't happy with the finish of the surface as it had imperfections from the PVA layer. I sanded it all out, and buffed it. Applied several coats of mould sealer followed by several coats of wax. Next week I will make a wing with all the redesign alloy bits. Look forward to testing a swan neck set up on the MX5.
    The boot started like this. I merely cut the hump out of the NB boot, continuously trimmed it until it was the right size and flowed with the roof section, then bonded it on. Plenty of filling and sanding later and we have a part ready to mould.

    Last edited by lightyear; 16-02-18 at 08:01 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 1:46.0 WNTN 1:33.5

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