1:6 mono waterski

[Dim L]

@return to home congrats for your work.
I am building myself a "RIB style" boat with a diy outboard.
For details you can see here: https://www.modelbouwforum.nl/threads/p1-puma-rib-racing-scratch-building.279366/
Nice to see a second RIB here.
Greetings,
Dimitris

 

[Returntohome]

the variable ski is in the picture she is up within a short distance but leaning left, more tuning required, I have tied a knot in both lines again this has the effect of shortening the blue tow line more than the ski pulling line because it's thicker. From the angle she is at the variable rod hasn't deployed at this point which is good, but the blue line which she holds is slack, bad.

 

[Returntohome]

Thanks Dimitri, this will be my 4th rib, all have been a great success and great fun to use.

 

[Dim L]

So scale ... well done!
You can also publish your work on RIBs (and diy outboards) in your own post in this forum.
I think many people here would be interested!!

 

[Returntohome]

Here is the 2nd rib with console fitted.

 

[Carbohans]

Bandje achter de boot is ook leuk om te zien of een banaan mooi gemaakt allemaal.

 

[Unusual RC]

Bandje achter de boot is ook leuk om te zien of een banaan mooi gemaakt allemaal.

Die heeft Colin ook gemaakt voor achter zijn schaalmodellen, daar is het allemaal mee begonnen
Maar zo'n monoski is echt een prestatie. Allemaal uit de koker van Lex Verkuijl!
Zelf had ik er nooit aan kunnen denken, terwijl ik jaren op een draagvleugel heb gesurfd.
ws. juist daarom!

 

[Returntohome]

This was great fun, an inflatable scooter inner tube was used.

 

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Stainless steel foil fitted took hours to do , trying to get each side equal, hope it works, I think it will
Notice the fishing floats on the lines to keep away from the propeller, the most expensive polystyrene I've ever bought

 

[Lex Verkuijl]

Looking good, that should be stiff enough. For the line you could also use flyfisching line. That is holow and floats on its own.

 

[Carbohans]

Bekijk bijlage 489209This was great fun, an inflatable scooter inner tube was used.

Geniaal ook met dat handje omhoog in het bandje zo van neeeee stoppen niet harder Hihi

 

[Carbohans]

Moest aan mezelf denken

 

[Lex Verkuijl]

Moest aan mezelf denken

Zat je dan in de band ... of aan het gas ..

 

[Carbohans]

Nou om eerlijk te zijn ik zat in de band en vrouw lief was een beetje boos op me echt geen idee waarom maar ze ging bijna volgas en dat is niet zo leuk in een klein bandje. Mijn billetjes waren een beetje beurs

 

[Returntohome]

So the stainless steel foil did work,but maybe not as reliable as aluminium. The main thing was when I put her in the lake she sank a bit deeper due to the extra weight, this spoilt the good starting position I had achieved with my ski. So need to try again to get the dural (strong ally)
Looking at the film the tow line she holds is whipping about , I may try swapping it for the same fishing line used for pulling the ski.

 

[Returntohome]

Another try , having no luck getting the aluminium, it's now called 6082 not dural , so at least I'm on the right track. Someone at the club said why don't you 3d print the foil, so I've given it a go. Whilst at it I made the blades adjustable with two screws seen in the horizontal section. Weight wise not saved much, but I could save some more by altering the printed blades.

 

[Returntohome]

So it worked, did some filming. However it still bends at the join, I didn't think it possible to print a complete blade, but I've had a practice and it is possible. All guess work on the angles , but I may try and draw it for real this was a practice drawing.. I think Lex said if it is wider then it will work at lower speed. We have a speed limit near the jetty for the yachts. It's quite relaxing pulling the skier at slow speed as I found out today. Some dimentions from Lex would be helpful

 

[Returntohome]

Pictures from the video taken yesterday, the part printed foil worked better than I had realised at the time.
Using the new white outboard this time, it drew 70 amps, compared to about 50 for the blue , maybe it will drop as its run in.

 

[Returntohome]

 

[Carbohans]

Wauw it looks so real.