Re: Unwinder Design

James Ewen VE6SRV

The second link you posted is about as simple as it can get. Just wind the string around a flat form and let go. 

The string unwinds as the balloon and payload rises. Simple and easy to use. 

On Sat, Jun 20, 2020 at 3:51 PM Steve G8KHW / AJ4XE <steve@...> wrote:
Hi folks - I'm looking for a home-brew unwinder (AKA dereeler) design -
I've got a launch to do with a limited launch area and I really need to
use an unwinder.

Ive seen the designs for the Vaisala and Graw types:

My first attempt to make my own was a bit of a failure.   Any sure fire,
simple designs out there?   My payload is about 100g (3.5 oz)

     Steve G8KHW / AJ4XE

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