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Title: Undercarriage for models under 1kg Post by: K K Iyer on August 19, 2014, 10:53:52 PM This started from a query by rcneil21 about sourcing spring steel wire.
Puncture wallahs have discarded bicycle tyres from which you can salvage the beading wires. Adequate for models upto about 1 kg. double or triangulate as required. I also use cycle spokes. But you have to wind a spring in it for nose gear. Pl see pics. Title: Re: Undercarriage for models under 1kg Post by: K K Iyer on August 19, 2014, 10:58:38 PM Can be moved from. One model to another.
Former built up of 2 ply plates with balsa sandwiched equal to thickness of wire. Plug in U/C, hold in place with scrap balsa. Picture clarifies. You can use spoke+wire from tire in combination. Title: Re: Undercarriage for models under 1kg Post by: RCNeil21 on August 19, 2014, 11:08:25 PM Thanks a lot sir for creating this thread. :salute:
How did you form the spring? I am going for a taildragger setup so wanted to bend the rod to create circle at the end so the tail gear doesnt snag or dig into the ground directly. Tail gear wont have wheel. This is the type of landing i will be making: http://www.rcgroups.com/forums/showpost.php?p=11861597&postcount=195 (http://www.rcgroups.com/forums/showpost.php?p=11861597&postcount=195) Title: Re: Undercarriage for models under 1kg Post by: K K Iyer on August 19, 2014, 11:24:06 PM A few months back Ashok baijal had posted a wire bender from Singapore or HOBBYKING.
But desi jugaadus dont need that. Get a wood strip about 1"x2"x12" exact size does not matter. Near one end drill a hole of same dia as UC wire. 1 or 2 or 3 inches away, drill a hole to accomodate any 1/4"-1/2" metal rod or tube you have. Take UC wire and bend a 1/2" L at one end. Insert small arm of L in small hole in wood. Insert metal tube/rod in larger hole. Bring wire into contact with rod. Hold free end with strong pliers. PULL and bend into circles. If you dont pull, the circles will be egg shaped and unequal! Made in India! Title: Re: Undercarriage for models under 1kg Post by: K K Iyer on August 19, 2014, 11:27:45 PM Could not post a pic, as can't find the drilled wood bar.
RC Aunt, the official findouter, is abroad. Title: Re: Undercarriage for models under 1kg Post by: K K Iyer on August 19, 2014, 11:55:23 PM Weight of undercarriage with 3 wheels 21 gms.
Title: Re: Undercarriage for models under 1kg Post by: RCNeil21 on August 20, 2014, 08:26:33 AM "RC Aunt, the official findouter, is abroad." Why are all the moms,wifes, sisters the best findouters ?:giggle:Kind of understood sir, ill try some methods, i know i have to use a metal tube, but how? Unfortunately dont have an efficient jugaad brain. Title: Re: Undercarriage for models under 1kg Post by: sbajare on August 20, 2014, 09:14:15 AM spring steel wires available in pune
very cheap too. i make my own landing gears from 2mm spring steel wire regds Title: Re: Undercarriage for models under 1kg Post by: sbajare on August 20, 2014, 09:22:53 AM see pics
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