Ventilation holes in carbon seat?

Dieses Thema im Forum "Velomobile" wurde erstellt von BcBaghjul, 12.06.2018.

  1. BcBaghjul

    BcBaghjul

    Beiträge:
    42
    Ort:
    Christiansfeld, Denmark
    Velomobil:
    Quest Carbon
    Hi :=)

    I was wondering if is a good idea to make some holes in the carbon seat (for my C-Quest) to ventilation at the back a bit better/more comfortable. At the moment I'm sitting at a ventisit but could use a bit more airflow to ventilate my back.

    Anyone having experiences in that area? (if yes please post picture beside you message)
    - Ps. the seat stil have to hold 100kg...

    Thanks...
     
  2. liegeratt

    liegeratt

    Beiträge:
    551
    Ort:
    48431 Rheine
    Liegerad:
    Flevo 50:50
    Zuletzt bearbeitet: 12.06.2018
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  3. TimB

    TimB

    Beiträge:
    7.778
    Alben:
    1
    Ort:
    Tettnang Bodensee
    Velomobil:
    Go-One Evo K
    Since the seats from velomobiel.nl are known to break relatively easily, I wouldn't recommend drilling holes if it will be loaded with 100 kg without reinforcement.
    It's possible to adapt another seat into your Quest, however. A DF seat should manage some holes just fine and is designed for the same mounting type. The Milan seat is available in two vraiants: with and without holes. However you would have to adapt your Quest for the Seat as it transfers the weight on a flat surface and ist not suitable for the quest type of mount.
    And you can always reinforce your original seat and then drill the holes inbetween the reinforcements.

    Cheers,

    Tim
     
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  4. BcBaghjul

    BcBaghjul

    Beiträge:
    42
    Ort:
    Christiansfeld, Denmark
    Velomobil:
    Quest Carbon
    Thank for the tip @liegeratt - looks like a lot of holes....I think I have to try with less holes as @TimB B suggest if I'll give it a go.

    Is the blue funnel i the picture for urine or other purpose?
     
  5. einrad

    einrad

    Beiträge:
    4.244
    Ort:
    8010 Graz
    Liegerad:
    Flevo Racer
    Special racing equipment for the "Trans Amerika Bike Race". :)
    And Yes, you're obviously right.
     
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  6. BcBaghjul

    BcBaghjul

    Beiträge:
    42
    Ort:
    Christiansfeld, Denmark
    Velomobil:
    Quest Carbon
    @einrad: I was thinking about the possibility to use a funnel for the purpose because I've been thinking about participate in a 24 race next year and therefore nices to see it seams to work for others - of cause my one has to be much bigger ;=)
     
    DePälzer und Stony gefällt das.
  7. fan-dan

    fan-dan

    Beiträge:
    850
    Ort:
    Zürich
    Velomobil:
    Sonstiges
    don't SinnerBikes use perforated seats as standard? Many pictures of mangos show seats with holes.
     
  8. Kraeuterbutter

    Kraeuterbutter

    Beiträge:
    9.666
    Alben:
    2
    Ort:
    1050 Wien
    Velomobil:
    Go-One Evo K
    Liegerad:
    Challenge Fujin
    Trike:
    Steintrikes Roadshark
    how high or low is the ground-clearance of your Quest Carbon ?

    i have the same Problem as you:

    so for that reason i can not use such a funnel in my evo-k, because the risk would be too high, that i rub my Dödl on the asphalt
     
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  9. Felix

    Felix

    Beiträge:
    12.566
    Ort:
    Bundesstadt
    Velomobil:
    Go-One Evo K
    The seat of my Quest was so thick, it was no problem to drill a lot of holes! The extralight seat of the Evo K had to be reinforced a little for the holes.
     
    Zuletzt bearbeitet: 13.06.2018
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  10. knightrider

    knightrider

    Beiträge:
    439
    Ort:
    49504 Lotte
    Velomobil:
    Mango Sport
    Trike:
    HP Scorpion
    Hi
    my Mango and Quest saets are with holes.
    So far no problems (70000km).
    My df seat has no holes but I am sure it could handle a few.
    Happy Drilling.
    Thomas
    20180613_085049.jpg 20180613_085117.jpg
     
    Rolf-Ka gefällt das.
  11. BcBaghjul

    BcBaghjul

    Beiträge:
    42
    Ort:
    Christiansfeld, Denmark
    Velomobil:
    Quest Carbon
    @knightrider looks like a nice setup - I think I'll try something like that... What kind of weight are you putting on the seat? (just to take in consideration before drilling holes :=)
     
  12. knightrider

    knightrider

    Beiträge:
    439
    Ort:
    49504 Lotte
    Velomobil:
    Mango Sport
    Trike:
    HP Scorpion
    Hi
    I think the holes and additional holes in the seat brackets saved around 150g.

    Happy miles Thomas
     
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  13. Felix

    Felix

    Beiträge:
    12.566
    Ort:
    Bundesstadt
    Velomobil:
    Go-One Evo K
    @knightrider: Wie viel du wiegst war die Frage, nicht der Sitz!
     
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  14. BcBaghjul

    BcBaghjul

    Beiträge:
    42
    Ort:
    Christiansfeld, Denmark
    Velomobil:
    Quest Carbon
    @Kraeuterbutter - The clearance height is okey but I think the exit hole only will be just below the floor of the velo.... I'll try look more into it this summer. If you find some useful information about solutions please let me know.


    I started out with 8 holes in my seat (se picture) - test driving tomorrow....

    I just noticed that the Trans AM driver have ventilation holes in the back of the velomobile as well. Will this be useful for commuter cycling? - my concern is mostly rain water entering thru the holes (picture is borrow from this youtube video - )
     

    Anhänge:

  15. velodrom

    velodrom

    Beiträge:
    119
    Ort:
    93107 Thalmassing bei Regensburg
    Velomobil:
    DF
    I drilled quite some wholes into my Strada seat some years ago, see Der richtige Sitz im VM.
    The stability did not suffer, but on the other side I did not feel a significant improvement concerning the cooling of my back.
     
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  16. BcBaghjul

    BcBaghjul

    Beiträge:
    42
    Ort:
    Christiansfeld, Denmark
    Velomobil:
    Quest Carbon
    @velodrom - Wow that's a lot of holes - like Swiss Cheese... Impressing that the stability didn't decline with that many holes. I wasn't looking for cooling but just hoping for a bit of ventilation lower the humidity of the back a little. Did you use a ventisit on top of the seat?
     
  17. velodrom

    velodrom

    Beiträge:
    119
    Ort:
    93107 Thalmassing bei Regensburg
    Velomobil:
    DF
    Yes, i also used the ventisit. I was also thinking about some ventilation mechanism, but couldn‘t figure out an easy solution. Meanwhile i simply accepted a wet back as a minor drawback of an exciting way of motion , and change clothes after every ride. This is the simplest solution for me .;)
     
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  18. Felix

    Felix

    Beiträge:
    12.566
    Ort:
    Bundesstadt
    Velomobil:
    Go-One Evo K
    You can close the back of the seat and connect it to a hose from the hole in the front. Works pretty good, but not on ascents when you need it the most and downhill it can be too cold.
     
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  19. BcBaghjul

    BcBaghjul

    Beiträge:
    42
    Ort:
    Christiansfeld, Denmark
    Velomobil:
    Quest Carbon
    @Felix - based on today's test drive I don't think I need more ventilation... but always nice to have ideas to improve if I change my mind later on :=)
     
  20. fan-dan

    fan-dan

    Beiträge:
    850
    Ort:
    Zürich
    Velomobil:
    Sonstiges
    many holes? The frame gives stability, not the pad.
     


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