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Title: Cheap Hovercraft :D Post by: rajathv8 on April 07, 2011, 06:16:45 PM Was inspired by VC's hovercraft so planned on making one for myself since quite a while.
I have used scrap items like "no parking" sign coro board, leftover wood at home , scrap bits of depron , diwali rocket sticks and big bazar zip ties :D. So model cost is almost nil , except for hot glue maybe. Electronics used: Motor : CF 2812 1500 kv Prop : 6X3 ESC : HK 18A Radio : HK 4ch Battery : 2200mah 3s Servo : HXT 900 All electronics can be removed without any effort for use in other models , including the servo. I made this just to test the principle and work on improvements. I have learnt a lot and still am. Model is entirely made from coro. I have used small depron strips instead of cloth for skirt - it has worked well both indoors and terrace rough concrete (front part gets slightly eroded on concrete as the model touches the concrete and slides for a while when throttle is cut). Motor mount is made using teak beeding - the thrust broke the mount on first attempt itself so i have used a support strut. I plan to make a smooth base - the rocket sticks affect air flow below so will cover it up with cardboard or something. The video is at less than half throttle. I love the way it blows dust away when used outdoors :D Any suggestions are welcome. Credits: VC for posting his hovercraft for us to learn from. Ashok for helping me acquire electronics and prop. Video: http://www.youtube.com/watch?v=xjvDo0yfV_g Title: Re: Cheap Hovercraft :D Post by: rohitgupta322 on April 07, 2011, 06:27:54 PM Wow good one {:)} {:)}
Title: Re: Cheap Hovercraft :D Post by: rajathv8 on April 07, 2011, 06:28:55 PM Thanks Rohit :)
Title: Re: Cheap Hovercraft :D Post by: ved on April 07, 2011, 06:29:40 PM Good Build !!!!!!!!!!
Title: Re: Cheap Hovercraft :D Post by: foamybuilder on April 07, 2011, 06:34:10 PM Great!!. i think you can use the packing foam around the edges and bottom and it can become immortal!
Is it going straight with just throttle and no control input? Try using a gyro on the yaw, it will be more fun! Title: Re: Cheap Hovercraft :D Post by: R C on April 07, 2011, 06:49:01 PM Nice work Rajath.......
{:)} Title: Re: Cheap Hovercraft :D Post by: rajathv8 on April 07, 2011, 07:02:53 PM Thanks RC , ved , foamy :)
No its not going straight, without control input it goes in circles. Inbuilt failsafe :D Need to make a lot of adjustments. Title: Re: Cheap Hovercraft :D Post by: ANTA on April 07, 2011, 07:10:17 PM {:)} {:)} {:)}
Title: Re: Cheap Hovercraft :D Post by: VC on April 07, 2011, 08:43:45 PM Well done!!! Would love to see more of it in action.....................
Title: Re: Cheap Hovercraft :D Post by: ashJR7202 on April 07, 2011, 10:46:23 PM its really very gud yar!!!
Title: Re: Cheap Hovercraft :D Post by: anandp on April 07, 2011, 10:57:21 PM nice work man !!!
:goodjob: Title: Re: Cheap Hovercraft :D Post by: Nehutech on April 07, 2011, 10:59:13 PM GR8 work Buddy :bow: :bow:
Title: Re: Cheap Hovercraft :D Post by: Husein on April 08, 2011, 12:17:06 AM Thats great, keep them coming. Make a ramp and run it over the ramp onto a soft landing ofcourse, that should be fun
Title: Re: Cheap Hovercraft :D Post by: iamahuman on April 08, 2011, 05:39:56 AM Good work Rajat. :)
Title: Re: Cheap Hovercraft :D Post by: Sreedhar on April 08, 2011, 09:39:42 AM Great Work..... Keep it up..... :)
Title: Re: Cheap Hovercraft :D Post by: rajathv8 on April 08, 2011, 09:45:57 AM Hey thanks guys :)
Title: Re: Cheap Hovercraft :D Post by: harsha on April 08, 2011, 02:56:06 PM very nice build :)
Title: Re: Cheap Hovercraft :D Post by: sushil_anand on April 08, 2011, 04:25:41 PM Is it actually hovering or sliding ?
Title: Re: Cheap Hovercraft :D Post by: gauravag on April 08, 2011, 04:35:49 PM Exactly . I see no mechanism for generating a hover - No compressor, no skirting.
Title: Re: Cheap Hovercraft :D Post by: rajathv8 on April 10, 2011, 07:13:03 PM Well the model doesnt touch the floor so i guess its hovering :) Skirting is in the form of depron :D From the pic you can see that the cellotape is intact (blue) everywhere except the front. This is because i run it on rough concrete surface, on terrace. When ever i cut throttle the front scrapes and then it comes to a stop. In guessing this is because of battery weight which is towards the front. The entire model weight is 375gms (battery weight = 185gms).
I have cut the model into a smaller one with some modifications like a smooth base, to be used with a much lighter battery. Waiting to go collect a dean connector from Ashok for the battery (800mah 2s). Now the model weight is 170gms+ battery weight (50gms for 800mah). Will work on it once my coll tests are done. As of now i have broken the prop 3 times - hit the curtain. Iv fixed the same prop 3 times using feviquick :D Seems to work fine but the esc heats a little - by the slightest amount. |