Making a micro hi start

[@PecosNM]

Great explanation, very thorough, thank you!

[@Johnny-tt8zc]

Thank you for this. I think I’m going to make one for my micro BoT. Finally just starting to build it. Stay safe.🍻🌲

[@A470RCSoaring]

I hope to see some video of it flying. Enjoy.

[@renman71]

So Mr. metric system, the screwdriver is about a foot long?

[@ivansaenz205]

Check frank zaic's "model glider design" , there is a table of hi start dimensions depending on the glider's wing area . Starting with 1/16 rubber for jobs less than 100 sq in. I did mine . Works great as long as you launch against the wind.cheers

[@robertturner8040]

Nice video i have some of the thin red silicon tubing for small stuff i never thought of using free flight rubber .Extra height ? you do run the risk of hitting a thermal i had one so high i couldn't tell which direction it was going lol and had to do a diving circle to get it low enough till i could tell the direction to get it back .A bit of head wind will allow it to gain more height so you could add more braid .

[@richarddavies7577]

Check out angel wings design high start great bit of kit also do some great micro glider and flying wings

[@joewoodchuck3824]

I wish the model industry would rate tubing for high starts by weight of pull it has. I don't care so much about dimensions.

[@A470RCSoaring]

I think it’s just that the tubing has been manufactured for other purposes possibly and so the manufacture isn’t interested in how much it can stretch or Ibs it can pull.

[@joewoodchuck3824]

@@A470RCSoaring You make a reasonable point, but resellers knowing who they're marketing to could easily provide such information. A fishing scale along with some standardized length of tubing could be used to measure pull throughout it's recommended stretch range and printed on the package and/or published on the web. I just find it strange that as modellers we still have to guess at which dimension is appropriate. Oh well.

[@coverdestroyer3572]

how long the rubber sir?

[@A470RCSoaring]

I think it was a 5 metre length of 1/8” free flight model flight rubber.

[@IainEPaterson]

If you really can't comprehend Imperial measurements you must be younger than you look and/or have never bought sheet balsa in the UK. BTW, the 3/16" rubber you purchased is 4.78mm. 1/8" rubber (adequate for the MicroBoT and absolutely ideal for any of the 31" AngelwingsDesigns micro gliders) is 3.17mm. More stretch would be a good idea (assuming you get the towhook position sorted) but you need to get the proportion of line to rubber correct first. Using more line with your current amount of rubber would probably not achieve anything. The ideal proportion of line to stretchy stuff is normally said to be between 3 and 5 to 1. More line with the current amount of rubber would only work in fairly windy conditions where after the initial pull one can 'kite' up against the wind - this can work with bigger stuff on the flat (in the sort of winds you'd find on the slope) but is probably not suitable for the sort of conditions in which to be flying these micro gliders, and needs constant corrections on the way up to soar left and right as you go to keep the line taut. All that said, some good ideas for newbies in here so 'compliments to the chef'.

[@A470RCSoaring]

I wish I was younger than I look. I was brought up with imperial, however I haven’t used it in decades now as most the majority of measurements I’ve had to use in work etc have been in metric. Maybe I should reacquaint myself with it. Thanks for the info, it’s very useful. Unless I can find a way of making an adjustable tow hook, then I’m stuck with the one I have which is hot glued to the fuse, as per the instructions. Thanks for your input, it’s always useful to myself & others.

[@IainEPaterson]

@@A470RCSoaring With luck. careful use of a dedicated covering type heat gun. or even a DIY one on low heat, will normally release hot glue. Just proceed with caution. I believe someone replied to one of your previous videos advising the correct placement of the hook although a movable type can be achieved at little weight penalty and would allow experimentation. BTW do you ever look for the PMs when on RC.Groups. Too late now and in any case you sorted your equipment problems later but when you first got on their MicroBoT thread I replied to your complaint about not being able to source micro gear for HiTec. Stuff was still about then but it's all disappeared by now.

[@IainEPaterson]

Just to add that, even better that a normal sized heat gun, a mini type will keep the heat localised. You can buy these from many online hobby stores but they all want £20 or so. Look on Ebay for 'mini heat gun' and you'll find exactly the same items for well under £10. That's where I got mine. Handy for little repairs to loose covering as well.