The Dowel Box Kite

A Tale Of Many Tows!

It seemed risky to take even the Dowel Box kite out today, since it could almost be called a 'light wind kite' along with the rest of the Dowel Series. For most of the day, fresh gusty winds had ruffled the bushes and trees near our house.

The Dowel Box kite in flight.

Later in the afternoon, the wind did seem to moderate somewhat, so out we went.

The large reserve was less windy than expected, but moderate strength gusts were coming through. Perfect! There's always much faster air up high compared to ground level, at this location.

It proved difficult to get the Dowel Box kite to stay up, even after numerous short tows during those gusts.

The towing point was shifted a few times, as I tried to get the most out of the kite.

Meanwhile, some mid-level cloud was drifting by overhead, indicating quite a brisk breeze up there. After some time, even the ground level gusts seemed to weaken as the sun dipped towards the horizon.

Time to get serious! I walked most of the way across the reserve, determined to tow up as high as possible this time. If nothing else, I was getting plenty of exercise...

Now, most times in this situation, a kite only has to get just above tree top height to contact faster air and 'get away'. But with a Box kite... Anyway, the magic line length turned out to be about 45 meters (150 feet) today. Suddenly, the flight became self-sustaining and it wasn't long before the line was really tight!

The Dowel Box kite flew at around 45 degrees most of the time, occasionally quite a bit higher in weak areas of rising air. When you do a lot of kite flying, it becomes clear that weak or small-scale thermal activity is everywhere, at any time of the year and in almost any weather.

Line tension varied a lot as the wind above 100 feet varied from the low end of 'moderate' through to quite fresh.

Up till now, the kite had been parked in a rather blue section of sky, but then some mid-level cloud started to blow across. With this more interesting backdrop to the kite, it was time to pull out the camera for some more video. See the top right corner of this page! It gives the impression that the kite is climbing continuously, but it's mainly just the cloud moving downwind.

I progressively let out line to 90 meters, maneuvering along the edge of the reserve to give maximum room for the kite in case of a failure.

You would think it would be easy letting out line, however the high tension made it tricky! It was safest to actually lock the line around a couple of fingers as each 1/2 meter (2 foot) length went out. Yeah yeah, I should be using gloves... At one point I fumbled and almost got a line-burn on one finger!

In the photo up there, you can see the yellow 30 meter (100 feet) tag on the flying line. The 4x zoom of the camera makes it appear much closer to the kite than that.

The wind was even stronger higher up, and the kite was approaching its limits. Curves everywhere! In the long spars, in the sail edges. From experience, the lower cross spars would drop out and the upper horizontal cross spar would snap under compression if the kite was pushed too far.

The Dowel Box kite was still holding around 45 degrees, and remained quite stable despite the wind speeds.

Tea time was approaching, so it was time to begin bringing the kite down. Easier said than done! Winding the flying line onto the winder was out of the question, due to the heavy line tension. So, with the winder thrown onto the grass, I started hauling the straining Box kite down. Small piles of line were left on the ground as I walked in a cross-wind direction.

This was hard work! And very slow to start with, with the 50 pound breaking-strain line pointing nearly straight at the kite. The Box kite was distorting under the air loads of the fairly smooth but brisk breeze.

Thankfully, the wind speed slowed just a little from time to time, making the process a bit easier.

With the Dowel Box kite down to under 200 feet, the lower cell didn't seem fully rigid. Oh-oh! Perhaps one or even both of the lower cross spars had fallen out... Bringing the kite down below 50 feet, it was clear that both spars had indeed disappeared! The vertical would have gone first. This would then take most of the tension off the horizontal one, which would have followed a short time later.

Having got a good long high flight to write up, I think it's time to retire this kite for a while! There's a bit of work now to get the Dowel Box kite airworthy again. Cross spar brackets to glue, plus assorted small holes and slits in the sail to tape up. But hey, the whole thing's less than $5 in materials...

The story above was an actual flying experience with the described kite. My write-ups are definitely warts-and-all since things don't always go totally as planned. However, half the fun of kiting is anticipating the perfect flight. When it happens, it's magic!


E-book special of the month (25% off)...

The Dopero is someone's clever idea to combine 2 Roller kites! Double Pearson Roller is where the name comes from. The resulting flat portion of sail in the middle makes this a very efficient design in light wind.

Even more so than the Roller before it, this kite has an attractive aircraft-like appearance in the air. This MBK version also excels in light winds.

If you have made Diamonds before, this kite takes somewhat more time to make. With the help of my instructions, it's still do-able by a beginner.

Get the e-book for making the MBK Dowel Dopero kite. After making your first one in plastic and seeing how it performs, you can try soft Tyvek or rip-stop nylon for your next build.

This Dopero can fly in quite a wide range of wind speeds thanks to the 4-pont bridle. The bridle lines keep the frame more rigid than a 2-point bridle could. Tail(s) are entirely optional, but may be added for looks.

The e-book is a PDF file - which means printable instructions to refer to while you make the kite. It also means convenient off-line access if that suits you better.

What's New!

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    Mar 25, 17 04:18 AM

    This afternoon was the perfect time to put the very-light-wind Della Porta through it's paces at height...

    Barely a leaf was stirring, but occasional movement in the tops of trees gave away some gentle…

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Wind Speeds

Light air
1-5 km/h
1-3 mph
1-3 knots
Beaufort 1

Light breeze
6–11 km/h
4–7 mph
4–6 knots
Beaufort 2    

Gentle breeze
12–19 km/h
8–12 mph
7–10 knots
Beaufort 3    

Moderate breeze
20–28 km/h
13–18 mph
11–16 knots
Beaufort 4    

Fresh breeze
29–38 km/h
19–24 mph
17–21 knots
Beaufort 5    

Strong breeze
39–49 km/h
25–31 mph
22–27 knots
Beaufort 6

High Wind
50-61 km/h
32-38 mph
28-33 knots
Beaufort 7