Hovercraft B/C

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dcrxcode
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Re: Hovercraft B/C

Post by dcrxcode » March 17th, 2017, 9:51 pm

Ashernoel wrote:
Tesel wrote:
Ashernoel wrote: Maximum lift we found is low slack, almost completely taught with a thousand pores poked by a needle.
Are you using the same fan most of the people on the forums are using? I got it to work, using a lot of holes on the bottom, but I was only able to support 1 kg or so.
When you have your skirt, is it unsupported, or is there a layer of foam or something similar giving it more shape? I'm wondering it that's my issue.
Yea we have the blower fan ~1000 pa from digikey that we used at Loyola. As for supports, we have plastic supports to raise the base about half an inch from the ground. Then we put the skirt taught around there, so there is ample room to create that air cushion. Our skirt design isn't slow enough, so we're looking at how to reduce speed

We have a ton of issues with our hovercraft moving really slowly. Any tips? We're using a fan that has about 225 cfm.

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Re: Hovercraft B/C

Post by Ashernoel » March 18th, 2017, 9:01 am

dcrxcode wrote:
Ashernoel wrote:
Tesel wrote:
Are you using the same fan most of the people on the forums are using? I got it to work, using a lot of holes on the bottom, but I was only able to support 1 kg or so.
When you have your skirt, is it unsupported, or is there a layer of foam or something similar giving it more shape? I'm wondering it that's my issue.
Yea we have the blower fan ~1000 pa from digikey that we used at Loyola. As for supports, we have plastic supports to raise the base about half an inch from the ground. Then we put the skirt taught around there, so there is ample room to create that air cushion. Our skirt design isn't slow enough, so we're looking at how to reduce speed

We have a ton of issues with our hovercraft moving really slowly. Any tips? We're using a fan that has about 225 cfm.
Buy better stuff. > CFM = > speed. But, then you need to worry about accuracy and slowing it down. You'll do great. Digikey has a good selection of even higher CFM fans, albeit they are expensive.
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Re: Hovercraft B/C

Post by SciHC101 » March 18th, 2017, 9:42 am

How do you connect a Traxxas 2923X NiMH battery pack with an "iD" connector to a normal circuit in your Hovercraft?

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Re: Hovercraft B/C

Post by SciHC101 » March 19th, 2017, 2:14 pm

Do you have any suggestions for good NiMH battery packs?

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Re: Hovercraft B/C

Post by ericlepanda » March 19th, 2017, 5:48 pm

SciHC101 wrote:Do you have any suggestions for good NiMH battery packs?
Tenergy usually makes good products. Get one with a high mAh rating and you'll be fine.
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Re: Hovercraft B/C

Post by antoine_ego » March 20th, 2017, 3:24 am

SciHC101 wrote:Do you have any suggestions for good NiMH battery packs?
I'm personally a fan of either Traaxas or Racer's Edge batteries.
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Re: Hovercraft B/C

Post by Ashernoel » March 20th, 2017, 5:17 am

antoine_ego wrote:
SciHC101 wrote:Do you have any suggestions for good NiMH battery packs?
I'm personally a fan of either Traaxas or Racer's Edge batteries.
If you get decent high voltage medium capacity batteries, does it really matter where they are from?
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Re: Hovercraft B/C

Post by SciHC101 » March 20th, 2017, 6:53 pm

Do you have any suggestions for fans to use for propulsion?

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Re: Hovercraft B/C

Post by ericlepanda » March 22nd, 2017, 7:48 am

SciHC101 wrote:Do you have any suggestions for fans to use for propulsion?
Fans with high CFM from Digikey should work. Any fan with > 200cfm should be fine. Getting a hovercraft to go fast is easy; getting the craft to move slowly is the hard part.
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Re: Hovercraft B/C

Post by LittyWap » March 22nd, 2017, 1:57 pm

First of all, it's not all about the motors, It's the skirt. I'm telling you right now, max lift is not taut, with a bunch of holes (like an airhockey table). I have won my region using a... much more... confidential design. Unless you are using a CD motor, you can lift 2 kg with the right skirt. At my peak lift, my vehicle hovers half an inch off the ground, and the fastest time was 1.17 seconds. Good luck to all of you, I shouldn't reveal more than that....

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