Braiding rubber motors - a "lost" art from the 1930s!

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  • Опубліковано 29 гру 2024

КОМЕНТАРІ • 67

  • @frankartieta7483
    @frankartieta7483 5 років тому +3

    Hello :)
    This is becoming a lost art
    I must say that
    You are a modeler like I have never seen
    There is much to learn from you !
    Thank you for the great videos here !
    I just recently found your UA-cam videos
    I have a bunch of questions :)

    • @domoremath
      @domoremath  5 років тому +1

      Thank you, I hope the videos are helpful. You should also go to hip pocket aeronautics for posting questions, there are lots of useful people there, its a great hobby!

  • @aeroearth
    @aeroearth 5 років тому

    Thanks for the video!
    I always braid rubber motors by putting a dowed/small screw driver in the middle of the motor held temporarily with a small rubber band looped around the ends. I wind BACKWARDS to braid otherwise the two skeins fly apart during the run down and can hit the delicate fuselage uprights or formers and damage them. Then to form the braid bring both ends together holding the mid point in the other hand. Then let go. dowel/small screwdriver which will spin until it reaches a rest point. I put a small rubber band around each end then fit them around a "Tim Gray" double loop 1/16" piano wire hook. Third band at the hook to hold both halves together. Pull out dowel/small screw driver from other end and fit another small band to hold the rubber strands together about 1" from the end. For the prop. shaft hook I bend a "D" shaped hook at the end of the shaft, with the back of the "D" against the nose block. Back of the "D" is just half of the flat as shaft goes into rear bearing. The small central hole in the "Tim Gray" piano wire hook just fits over the open end of the "D". Rubber loops of "Tim Gray" hook have short pieces of 1/16" bore neoprene or pvc tube pushed on to protect the rubber strands. The "Tim Gray" hooks on the "D" end of the prop. shaft NEVER climb the hook.

    • @domoremath
      @domoremath  5 років тому

      Yes I mention the backwards winding above, though it doesn't really matter for tube jobs with folders like these. I never use hooks anymore, bobbins are wobble free, dead true, and there's no possibility of climbing, so I eventually started doing everything with bobbins around 2014.

  • @tifosiman68
    @tifosiman68 11 років тому

    Thanks for this Tutorial, I've been looking for a braiding video for a while. I might actually get the guts to fly one of my planes this spring.

  • @domoremath
    @domoremath  11 років тому +1

    Thanks, I think its nice to see it done at least once, just to get started. Go out and fly, its fun!

  • @robertbrunston5406
    @robertbrunston5406 5 років тому

    I don't know much about these rubber band motors yet! Thank you.

  • @MarkRobinson555
    @MarkRobinson555 Рік тому

    Excellent video, thank you very much for sharing 😀

  • @HughJarse1968
    @HughJarse1968 10 років тому +1

    Very helpful video, thanks. Just one question: at 3:15, does it matter in which direction you make the winds?
    Kind regards from England.

    • @domoremath
      @domoremath  10 років тому +1

      I've always wound both halves clockwise, then they will braid nicely. You could try it counterclockwise, but that might give you less energy because the halves will be tightening further when winding, whereas with clockwise they actually untwist when winding. However, I haven't tried it so that's just speculation, but I know that clockwise definitely works!

  • @josephwolf1
    @josephwolf1 3 роки тому +1

    Thanks for the helpful video.
    I'm new to free flight rubber powered and have a question, how do I know how much to wind.....I have the feal as if my model is about to crack when I wind it more then a 100 turns

    • @domoremath
      @domoremath  3 роки тому +1

      I usually mention how many winds I have for each plane, typically it is at least 800. You have to lubricate and stretch the motor, do a search on 'rubber motor maximum winds' and you'll find a bunch of useful resources, there are also charts around that give the maximum winds for a given motor, and ways to calculate it. Good luck!

    • @josephwolf1
      @josephwolf1 3 роки тому

      @@domoremath Thank you I will.

  • @tifosiman68
    @tifosiman68 11 років тому +1

    I bought a 30" Dumas Cub just for flying. I always thought a Dumas would fly without modifications.

  • @donlawrence1428
    @donlawrence1428 2 роки тому

    Hi. I never saw a switchblade folding prop like that. How does it work? thanks

    • @domoremath
      @domoremath  2 роки тому +1

      This type of folder uses a 'Z-bar', you could probably do a search on folding props (like on hip pocket aeronautics) to get info on them. They just let the blades swivel back into folding position.

    • @donlawrence1428
      @donlawrence1428 2 роки тому

      @@domoremath ok thanks

  • @Astracygnus
    @Astracygnus 5 років тому

    Is there any advantage of using many strands of smaller cross section rubber motor than using fewer with larger cross section? For example how about using few 1/4 strands rather than many 1/8 strands while making same length and weight rubber motor? Thank you.

    • @domoremath
      @domoremath  5 років тому +1

      There's lots of discussion and debate about this, but I've never noticed any difference between using more strands of thinner rubber or less of thicker, power characteristics seem the same. The only times I vary from 1/8 is when I want to make motors with an unequal number of strands - e.g., if you want a 5 strand motor of 1/8, you can use 10 strands (5 loops) of 1/16 - or if I want a certain length in Coupe/Wake/P30.

  • @collinmccallum
    @collinmccallum Рік тому

    great information!

  • @stanburdick9708
    @stanburdick9708 5 років тому

    dont ask me why but I should know by now!! but is it correct the motor before wound should be 1.5 X the fuse ,so say the fuse is 24in. so am guessing the motor should be 60in total before winding, right???

    • @domoremath
      @domoremath  5 років тому

      You have to measure the distance from the nose hook to the rear peg. If that's say 24in, then the loop of rubber (regardless of how many strands) should be 1.5 times that distance, or 36".

  • @stanburdick9708
    @stanburdick9708 5 років тому

    hello again, so I made up some braided motors different strands/lengths, question is how long should a motor be if the distance from rear peg to prop hook is 18in. …….this is not considering prop size

    • @domoremath
      @domoremath  5 років тому

      Choosing the correct prop/rubber motor combination is the most important part of rubber power flying. You can't do it by distance alone, it depends on the prop size and pitch. I'd recommend using the prop/motor combo given on the plan, then you can try small variations depending on how it flies, that's what I do. If it's not on the plan, SAM has a very useful list of length/strands for most oldtimers, www.antiquemodeler.org/ - look in the 'How to's - rubber' section.

    • @stanburdick9708
      @stanburdick9708 5 років тому

      k thanx, I think your referring to the gene wollack list but it doesn't say what kind of motor ,braided or non-braided or does it matter??

    • @domoremath
      @domoremath  5 років тому

      When referring to motor length, and I do in some videos as well, it's always to the unbraided motor length.

  • @nevillecreativitymentor
    @nevillecreativitymentor 3 роки тому

    2021 BUMP
    Hi, I am from India ... where can I geth these rubber bands especially for Rubber powered flight and even Peanut Scale Rubber

    • @domoremath
      @domoremath  3 роки тому +1

      The rubber you want is Tan Super Sport rubber (try searching that), the closest to you that I know of would be Mike Woodhouse free flight supplies, in Britain, google him and it will come up right away, he has all the sizes you need for big or small.

    • @nevillecreativitymentor
      @nevillecreativitymentor 3 роки тому

      @@domoremath 💗💗💗 Thank you

  • @falconeaterf15
    @falconeaterf15 3 роки тому

    Has anyone ever lost an eye doing this?
    YES !

    • @domoremath
      @domoremath  3 роки тому

      That's why I point out in some other videos that one should always wear eye protection when winding motors - for ex., see my travel box video. I haven't lost any eyes yet in over 50 years of winding!

  • @garryhammond7619
    @garryhammond7619 8 років тому +1

    Hi I have build a 30's style rubber motor powered boat (based on the Bowman Aeroboat2 pictures abound of these boats on the internet.) I have watched your video a number of times and just get a little confused at the directions the first strand is wound then the direction the second strand is wound, and finally which direction the motor is wound in. It looks to me as if both strands are wound clockwise and then they are released together which binds them in an anticlockwise direction. Do you then wind the whole motor clockwise? I have just bought my first rubber strip and would like to get this right. I have tested the boat just using elastic bands but they are too tight and drop the power like a dragster. Many thanks for the great videos. Hope you can help. Kind regards Garry UK (The English Bit).

    • @domoremath
      @domoremath  8 років тому

      Hi, yes that's correct, the two half set of strands are wound clockwise separately, then put together and wound counterclockwise. The braided motor is then wound clockwise. I hope that helps, have fun with the boat!

    • @garryhammond7619
      @garryhammond7619 8 років тому

      Thanks I shall give it a go. Kind Regards Garry UK (The English Bit)

    • @jimbo2629
      @jimbo2629 6 років тому

      I think it is better to wind both halves backwards and then wind the combined strands forwards a little to produce an even braid. That way you don’t unwind the braiding every time you start to wind the motor to fly. I think this may be important. I’ve never braided your way so I don’t know what happens in practice.

  • @Astracygnus
    @Astracygnus 6 років тому

    Great video and information. Can you please make a video about how to install rubber motor in plane and how to use half tube to wind motor outside plane. Thanks.

    • @domoremath
      @domoremath  6 років тому

      Next time I make a half-tube I'll make a video. In the interim, this video might help, it shows the half tube and how I wind outside the plane: ua-cam.com/video/Ft0WD036EmM/v-deo.html also check hippocket aeronautics, they have a lot of useful information.

    • @Astracygnus
      @Astracygnus 6 років тому

      @@domoremathThank you. I have seen that video. I don't understand how rubber gets pegged at rear peg with half tube. It seems you just pushed it in plane and motor clicked in and locked itself to rear peg.

    • @ltdvideos7216
      @ltdvideos7216 6 років тому

      Yes, it uses a "Piserchio" hook that you can twist onto the rear peg, do a search on Piserchio at hip pocket aeronautics and you can find many pictures, also available here: www.starlink-flitetech.com/windings

  • @56Seeker
    @56Seeker 6 років тому

    So you use dedicated metal fixtures to end off the rubber? I naively thought it was just looped onto the hook from the prop.
    This type of info is great; it's not the sort of thing you see on kit plans.

    • @domoremath
      @domoremath  6 років тому +1

      Yes, it's common to use aluminum hooks in the front, like the T-hook shown in this video, then you can wind with the prop off and use blast tubes or half tubes. The ones I usually use these days are shown in the Lanzo build video.

    • @jimbo2629
      @jimbo2629 6 років тому +1

      I use a reverse S shaft and Tim White loop to prevent the rubber creeping up the shaft.

    • @domoremath
      @domoremath  6 років тому +1

      I've gone totally over to the bobbin instead of any hooks, no way the rubber climbs with a bobbin plus you get a nice true spin, which is important.

    • @56Seeker
      @56Seeker 6 років тому

      A video focused on these internal fine details would be most helpful

  • @jimbo2629
    @jimbo2629 6 років тому

    Interesting video. When braiding I wind the rubber backwards. That can’t be done with your winder as it will unthread. It certainly helps stop bunching. I can’t remember where it said to wind backwards,but there is logic to it. I think it stops you unwinding the braiding at the start of each motor wind. I lubricate before braiding to get at all the rubber. Despite this your models fly better than mine, even with the extra weight of RC gear. Braiding is much easier with a helper😀.

    • @domoremath
      @domoremath  6 років тому

      Thanks, yes you can also wind backwards and then join the halves, then it doesn't unwind during the first few winds, though it doesn't seem to make much difference since you'll have some turns left on the motor anyway when it hits the stop. Here's hoping they keep coming up with lighter equipment!

  • @stevenvero2829
    @stevenvero2829 4 роки тому

    you didn't mention the directions in which you wound the rubber....

    • @domoremath
      @domoremath  4 роки тому

      It mentions it in the above comments about the video - wind them counterclockwise and they'll wind together clockwise.

  • @gregp.5739
    @gregp.5739 10 років тому

    When you wind the rubber, do you stretch it out?

    • @domoremath
      @domoremath  10 років тому +1

      Yes, you should stretch the motor to about 3 to 6 times its' resting length (I've heard some flyers go up to 8 times!), put in about half the winds, then slowly move in for the other half. You'll get a lot more winds with stretching, try some test motors and wind them until they break to see how many turns you can get in.

    • @gregp.5739
      @gregp.5739 10 років тому

      domoremath
      Thanks

  • @Pointtostones
    @Pointtostones 8 років тому

    Do More Math, I'm new to rubber powered flight and I'm really enjoying the builds. my only problem is,I'm not sure how to assemble a simple rubber motor. How long should I make the rubber motor? I'm only taking a single strand and folding it in half with a square knot. so far I've broken every rubber band that I twist.

    • @domoremath
      @domoremath  8 років тому

      I can't give a general answer to that, it depends on the size and weight of the model and the prop size. Most plans usually note a recommended motor, I would use that, or find one for a similar plane. Make sure that you're lubing the motor before winding, I'd also check at discussion groups like hip pocket to learn more about rubber handling, maybe I can do something more on it as well.

    • @Pointtostones
      @Pointtostones 8 років тому

      +domoremath Thank you. I will look into that site. I love your builds and flights. I use your videos for tips and inspiration. Thank you again.

    • @domoremath
      @domoremath  8 років тому +1

      Thank you for the feedback.

  • @kbird529
    @kbird529 8 років тому

    Thanks for sharing, I enjoy all your videos and it has helped me in learning more about free flight

    • @domoremath
      @domoremath  8 років тому

      Thanks, glad the videos are helpful!

  • @falconeaterf15
    @falconeaterf15 3 роки тому

    Behold the future of commercial aviation........

  • @john.t645
    @john.t645 10 років тому

    can u do this on a P-nut scale model?

    • @domoremath
      @domoremath  10 років тому

      A peanut typically uses a single loop of 1/8" or maybe 3/16". In that case what I do is simply put a few winds in the strand before tying it into a loop, that will remove the slack.

    • @john.t645
      @john.t645 10 років тому

      hmm that solved my issue it flys great thx

    • @domoremath
      @domoremath  10 років тому

      john t Now that I think about it, you can see an example of the twisting ('braiding') for peanut motors in my "Rubber powered models - some preliminaries" video, which includes two peanuts - you'll see some twisted peanut motors in that video. Glad to hear your flying is great!

  • @kingpinboogie
    @kingpinboogie 7 років тому +1

    Very well explained! Thanks!

    • @domoremath
      @domoremath  7 років тому

      You're welcome. I use 'slightly' braided motors on all of my oldtimers, really helps in my view.

  • @FourDollaRacing
    @FourDollaRacing 8 років тому

    Thanks for the how-to video! Looks like white dreadlocks....BLECH!