Author Topic: Diy foil nz  (Read 4499 times)

surfcowboy

  • Cortez Bank Status
  • *****
  • Posts: 3340
    • View Profile
Re: Diy foil nz
« Reply #60 on: September 25, 2018, 07:04:26 PM »
Kiwi thanks and you池e totally right about the plywood for prototypes, keep em fast and weight probably isn稚 that big of a deal. Others have said so on here.

Thanks for the offer of help. Yes, I知 in Fusion360. I値l PM you when I get something I like together. I知 trying to make myself learn a bit and so I値l do a bit of homework. Cleaning up my garage, wonder if I値l find space for a CNC lol.

kiwi

  • Waikiki Status
  • *
  • Posts: 41
    • View Profile
Re: Diy foil nz
« Reply #61 on: September 26, 2018, 05:19:26 PM »
As far as mast twist and flex.  6 layers of 3K carbon twill layed 45 dgrees and 90 degrees would fix it.  Vacuum bagging helps but is not necessary.

Yeah I'm probably going to have to do something like this for the new wing with all the torque acting for the size of the wing. Or just build a new one lol

I would done something like this but we only have carbon unis at home and don't have any cloth. Two of the carbon uni layers are laid at an angle that runs from the top back corner to the bottom front corner and opposite for the other layer so hopefully that does something similar.

kiwi

  • Waikiki Status
  • *
  • Posts: 41
    • View Profile
Re: Diy foil nz
« Reply #62 on: September 28, 2018, 02:50:58 AM »
Glued in the glass plate for the bolts to be countersunk into on the wing and glued a plate to the fuz to allow bolt mounting further outboard on the wings.
Didn't have enough time but will reinforce that new fuz wing mount with a whole lot of carbon and glass.
Trailing edge is now glassed and I sanded that up today and put a coat of resin over the whole thing as a temporary waterproofing for this weekends use.
Should be fine for testing but needs a whole filler coat and sand to make it fair.
« Last Edit: September 28, 2018, 02:52:49 AM by kiwi »

container

  • Rincon Status
  • ***
  • Posts: 103
    • View Profile
    • Email
Re: Diy foil nz
« Reply #63 on: October 10, 2018, 09:14:56 PM »
did you end up trying the new wing? looks mint! whats the span? and did you vacuum the glass plate for tapping into, im going to do a similar sort of thing on my one but i thought maybe resin rich would be better for tapping.

got my new super downwind flyer ready for glassing, 1100mm span

kiwi

  • Waikiki Status
  • *
  • Posts: 41
    • View Profile
Re: Diy foil nz
« Reply #64 on: October 10, 2018, 11:28:04 PM »
did you end up trying the new wing? looks mint! whats the span? and did you vacuum the glass plate for tapping into, im going to do a similar sort of thing on my one but i thought maybe resin rich would be better for tapping.

got my new super downwind flyer ready for glassing, 1100mm span

Yeah I had a go on the new one, didn't do so good in the surf but I'm gonna give it another go because it was shin height lol. Towing behind the boat it went sweet. Started lifting at 5 knots and flew best around 10. I think im gonna play around with stabilisers because Im not sure about this one.

Its 900mm span with 250mm chord. That wing looks mean, keen to see how slow it flies. Whats the chord on it?

The glass is plate dad had laying around from a job a few years ago, Im pretty sure its vacuumed but it works sweet for threading, I use helicoils instead of just straight threads.

container

  • Rincon Status
  • ***
  • Posts: 103
    • View Profile
    • Email
Re: Diy foil nz
« Reply #65 on: October 11, 2018, 05:30:57 PM »
looks good in the video! stabilizers is a tricky one, i gave up and took a mold off a gofoil maliko tail cause they have a nice twist to them and it made a huge difference in every aspect. pitch stability, turning, pumping everything became much easier and smoother.

the chord on this wing is about 260mm. i like them slightly higher aspect ratio with a fuller, rounder leading edge to improve the low speed/ high AoA flying which high aspect ratio wings dont usually like, seems to be working extremely well on my current foil although the heavily swept wing may also have something to do with this