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Hard top VS Soft top

Discussion in 'Roadster: Performance' started by W.Petefish, Jun 16, 2011.

  1. W.Petefish

    W.Petefish Active Member

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    Has anyone tested the performance figures with the Hard top and with the Soft Top?

    Any range difference?
     
  2. vfx

    vfx Well-Known Member

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    What about No top?

    Mesh Top?
     
  3. Doug_G

    Doug_G Lead Moderator

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    I doubt there is a performance difference; the weight difference is trivial.

    The hard top is quieter on the highway. It has a smoother surface. I have no idea whether either of those things translate to better range.
     
  4. S-2000 Roadster

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    There is more to it than weight alone, but the hard top is actually lighter than the soft top. I remember a decade ago when the S-2000 was new, and the track-tested top speeds were faster with a top than without. The absolute top speed, though, was with the side-view mirrors removed. I can't help but imagine that the Roadster mirrors have even more drag than the S-2000.

    I'm still waiting for the quieter freeway ride from my hardtop...
     
  5. W.Petefish

    W.Petefish Active Member

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    I have my hard top, but I have to wait until the weather cools down here before I do any sort of testing. (it was over 100 today!) That being said, it is going to at least be October.
     
  6. tennis_trs

    tennis_trs 2010 2.0 Roadster Sport

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    My hard top is heavier than my soft top.

    I finally weighed both of my tops today. The hard top is heavier, as I'd expected (I believe I've seen a post in another thread indicate the opposite like quoted below), but obviously both are light.
    Hard top: 22 pounds
    Soft top: 12 pounds
    [soft top included support slats, but not bag, since I never keep the bag in the car and none of this adds significant weight]
    [Note: my hard top is a clear coat one. I assume that there might be some significant difference in the production process, but wouldn't think that there would be a significant weight difference from a non-clear-coat one. Someone should weigh a non-clear-coat one and post here if it is significantly different.]

     
  7. S-2000 Roadster

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    Thanks, man. My Tesla salesman told me that the hard top was lighter. He quoted 8 lbs for the hard top and 12 lbs for the soft top. But he's gotten a number of other technical details wrong, too, so I guess I should weigh these for myself (although I don't have the proper scales - I'd have to weigh myself with and without the top, and that's not terribly accurate).

    What tech did you use to weigh your tops, and did you get tenths of a pound in accuracy?
     
  8. tennis_trs

    tennis_trs 2010 2.0 Roadster Sport

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    I weighed the tops by holding each while on my bathroom scale. I'd bet each is accurate to within a pound or two. I believe my scales displays in 0.2 pound increments; the values I got were 22.2 and 12.2 and I rounded them for my previous post.
     
  9. S-2000 Roadster

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    I just weighed my soft top, and got 13 or 14 lbs, but my bathroom scale has whole pound increments. That's not terribly accurate, so I'm not about to remove my hard top for such a coarse measurement. At this point, I might as well report the weight in cats. The soft top is 1 cat, and I presume the hardtop is 2 cats.
     
  10. tennis_trs

    tennis_trs 2010 2.0 Roadster Sport

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    It's plenty accurate enough to verify that your salesman was way off and the hard top is significantly heavier than the soft top, but that both are fairly light.

    By just lifting one after the other I could easily tell which was heavier before I had a scale available.
     
  11. doug

    doug Administrator / Head Moderator

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    Supposedly the clear coat CF hard tops are significantly heavier than the body colored ones. At least that's what I heard unofficially from Tesla folks back when people were still waiting for their tops. Would be interesting to have a measurement.
     
  12. vfx

    vfx Well-Known Member

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    #12 vfx, Jul 10, 2011
    Last edited: Jul 10, 2011
    Just for reference sake, the Mesh Top is just under 4 pounds including it's carrying bag.
     
  13. tennis_trs

    tennis_trs 2010 2.0 Roadster Sport

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    #13 tennis_trs, Jul 10, 2011
    Last edited: Jul 10, 2011
    I had wondered if they maybe built them about the same and added essentially a decorative layer or two to create the clear coat ones, but I wouldn't have thought they'd end up anywhere near doubling the weight. Considering how thin and flexible mine is, I'll be really impressed if the non-clear-coat ones are significantly lighter.
     
  14. S-2000 Roadster

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    That's a really good point.

    I also imagine that the body-color hardtops still have a standard auto body clear coat to protect the paint. It would not be as thick as the carbon fiber coating, because the body color paint surface is much smoother.

    In any event, I hope to weigh my body color hardtop some time soon. My joke about weighing 2 cats was assuming that the other measurement presented was accurate, despite being done with a bathroom scale.
     
  15. daniel

    daniel Active Member

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    I think a hard top would definitely be nicer in winter, but at $3,200 I guess I'll stick with the soft top.
     
  16. Tesla 940

    Tesla 940 Member

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    TOP ?? What top ???

    I took the hard top off when I got home from the dealer. I put it safely away and never think about it. I carry the soft top in the trunk just in case - but - if I can't drive with the top off, I'll drive something else. :biggrin:

    I would be interested in knowing more about the mesh top.
     
  17. doug

    doug Administrator / Head Moderator

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    Shade Mesh Screen Top
     
  18. vfx

    vfx Well-Known Member

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    Thanks Doug. Manufacturing has slowed on the Mesh Tops for upcoming winter. Those of you who are waiting please be patient. It's worth it.
     
  19. bonnie

    bonnie Oil is for sissies.

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    I can confirm.
     
  20. Nvbob

    Nvbob Roadster 1256

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    Mesh Top works great when it's too intense for topless.
     

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