54mm Carbon/Innegra FW Tube

Discussion in 'Vendor Display' started by REK, Sep 5, 2019.

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  1. Sep 5, 2019 #1

    REK

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    Alright guys, I wanted to try out something different and I ended up with good results. I have here a carbon/innegra tube. I am going to cut it to 57” long. I will cut it on Friday and will have the weight information. The OD reads around 2.27” to 2.275”. The ID matches fiberglass couplers well.

    Winding Pattern:
    90
    35 +/-
    90
    35+/-

    Epoxy TG is 180F.

    NOTE: Innegra much like kevlar does not like to be sanded.

    IMG_6395.jpg

    I am asking $100 plus shipping for this one. Please PM me if interested.

    Thank you
     
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  2. Sep 7, 2019 #2

    REK

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    Tube cut to 57” long and weight is 516 grams.
     
  3. Sep 9, 2019 #3

    REK

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    Just had to upload another picture with the coupler in the tube.

    IMG_6405.jpg
     
  4. Sep 9, 2019 #4

    Nytrunner

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    Very interesting.

    What are the properties does the innegra impart to the carbon tube composite?
     
  5. Sep 9, 2019 #5

    REK

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    The innegra gives the carbon an impact resistance. Carbon is very brittle alone, but when mixed with Innegra it will allow for some flexibility.

    You can take a hammer and smack this tube and it will not break apart. I’d advice you not doing this, because the hammer might bounce back and hit you.
     
  6. Sep 9, 2019 #6

    Nytrunner

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    Fascinating!

    What's the stiffness and weight tradeoffs compared to carbon?
     
  7. Sep 9, 2019 #7

    REK

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    Innegra by itself is not as stiff and therefore it is best to mix it with glass, carbon or basalt. When together it is very stiff. This tube I made is pretty stiff.

    The Density of Innegra is lighter than carbon. This makes the finished tube lighter than just an all pure carbon tube.
     
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  8. Sep 10, 2019 #8

    Wallace

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    And it looks really cool too...
     
  9. Sep 10, 2019 #9

    Motocrossman24

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    That tube is beautiful. I wish I had a need for something like that at the moment, I’d love seeing that punch a hole in the sky.
     
  10. Sep 15, 2019 #10

    REK

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    Cmon I know you want it.
     
  11. Sep 21, 2019 #11

    REK

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    Bump
     
  12. Sep 28, 2019 #12

    REK

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  13. Oct 4, 2019 #13

    REK

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  14. Oct 9, 2019 #14

    REK

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    Come on this tube has to go, whoever takes it is going to love it.
     
  15. Oct 9, 2019 #15

    OverTheTop

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    Looks interesting. What is postage to Oztralia on something like that worth?
     
  16. Oct 9, 2019 #16

    REK

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    I am not sure, I tried to ship some items back to china and the post office charged me $35 to send it out. It was a small box, so I can only imagine just how much it will cost to send this longer box to Australia.
     
  17. Oct 10, 2019 #17

    REK

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  18. Oct 11, 2019 #18

    Wallace

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    I can't believe no one has bought this yet. If only I wasn't so damn broke all the time..
     
  19. Oct 11, 2019 #19

    mbeels

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    If Innegra doesn't like to be sanded, how would one best attach fins to this? Tip to tip glass/carbon?
     
  20. Oct 11, 2019 #20

    dhbarr

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    Interested to hear which adhesive for Innegra, as well.
     
  21. Oct 11, 2019 #21

    REK

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    It will pretty much fuzz when sanded just like kevlar. To attach fins you want to sand into it. Of course don’t use a rough grit. Around 400 grit should be good.

    Any epoxy such as rocketpoxy or Aeropoxy structual adhesive will work as long as you get a good sanded surface.
     
  22. Oct 11, 2019 #22

    Wallace

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    Seems to me that sanding fuzzies into the tube at fin attachment point would aid in bonding. Isn't adding chopped carbon the latest fad?
     
  23. Oct 15, 2019 #23

    REK

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  24. Oct 17, 2019 #24

    REK

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  25. Oct 21, 2019 #25

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  26. Oct 27, 2019 #26

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