RSKI Steering Pads & other cool new items

Joined
Jun 4, 2012
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324
Location
Portland
#81
I hear you guys on making parts. I was wondering if the nossle would hold up to the load froma 3d printed part but it would seem it did other than when you modded it.
You must have a heap better 3d printer than I have.
The issue i guess is that while it could handle it, when they modified it they broke through the outer layer and this is where it all went wrong. I would be interested in seeing the cost to machine one from billet but i think it would be very high due to the block you had to tear up.
After a while we saw a couple unmodified nozzles break too, so it was disappointing. It was interesting because some colors seem to be extremely strong and other colors failing, in the same material. So consistency wasn't good enough in this application. It definitely can be strong enough though, We've been using the same nozzles on our own skis since December without an issue. :)

Our next YouTube video will reveal some of the work and the making of the nozzle, along with some hilarious additions!
 
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Big Kahuna

Administrator
Joined
Jan 14, 2006
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8,095
Location
Tuscaloosa, AL
#84
Don't ride wet trails? What do you mean? I live in northwestern Oregon, trails are wet at least 8 months of the year! :)
Think the Terra Firma there handles the wet conditions better than hear in the southeast. Ground gets wet, then people ride and it starts digging ruts and washing out really bad. Gets real bad when ground has been frozen and then thawing out and ridden.........
 

Quinc

Buy a Superjet
Joined
Feb 19, 2013
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5,639
Location
California
#85
That's awesome! Haven't tried one on a Reaper yet. Happy you're seeing the potential and having fun with it like we do!
I have burned through two tanks of gas and ran it on both thrust and x-metal trim. I sanded it down a bit so I would get more throw and clear the thrust trim ring. And my kids use it as a step to climb up the back of my ski. I am thinking people must have installed it wrong or are hitting the ground with it?
 
Joined
Jun 4, 2012
Likes
324
Location
Portland
#86
I have burned through two tanks of gas and ran it on both thrust and x-metal trim. I sanded it down a bit so I would get more throw and clear the thrust trim ring. And my kids use it as a step to climb up the back of my ski. I am thinking people must have installed it wrong or are hitting the ground with it?
Nozzle and steering cable adjustment is crucial for sure (for longevity of the cable and the nozzle). Also, tying down a ski certain ways can put a lot of stress on a nozzle. It might even just come down to poor material consistency in the nozzle. No matter what it's so fun to experiment with different angles! That was the point of the whole thing.
 
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Vumad

Super Hero, with a cape!
Joined
Jun 21, 2007
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2,710
Location
St. Pete, FL
#96
What kind of 3d printer and filament/plastic would one have to have to print the nozzles and fenders?
The printer temps and resolutions determine what materials you can print at what detail. Otherwise any printer works. For example, ABS plastic is going to want a heated print bed and an enclosure. PLA doesn't care. Nylon is going to want higher temps while carbon filaments want stronger nozzles. As long as you have a printer that can hit the specs of the filament you choose, you're probably going to be okay. It doesn't take an expensive printer for this anymore.

I hear you guys on making parts. I was wondering if the nossle would hold up to the load froma 3d printed part but it would seem it did other than when you modded it.
You must have a heap better 3d printer than I have.
The issue i guess is that while it could handle it, when they modified it they broke through the outer layer and this is where it all went wrong. I would be interested in seeing the cost to machine one from billet but i think it would be very high due to the block you had to tear up.
It sounds like you are probably using ABS plastic, or are having temperature issues. ABS is a stronger and more rigid plastic than PLA, but its those qualities also are a weakness for printing. The ABS has big problems with delamination during printing. This is caused by the lower layers cooling before the top layers are not done printing. Rather than melting together, the next layer just rests on the layer below it. The plastics also shrink and expand, so as the layers cool at different rates, they rip apart. PLA warps too, which is why we use various types of brims while printing, but PLA will usually distort, rather than separating.

Geometry, post processing, composite designs and intended service life are also pretty major factors.
 
Joined
Jun 4, 2012
Likes
324
Location
Portland
#99
I may not have been paying enough attention and you mentioned it in the video; when you let off the throttle where you able to steer? And what's the next thing you are making?! :)
The mega fin (biggest one) actually made a huge difference. I should have explained it better in the video. It is super touchy when the boat is flat, especially at high speeds. I'll have to try it in the surf soon when the beach opens.

Next video will probably be how to prep your ski for big surf. or a build rundown of one of our skis.
 
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