Sk3 63mm Motor fan cover by JohnAlbrecht

Last crawled date: 3 years ago

Here is a work in progress. The goal was to create a cover for the huge holes on the back of the 63mm sk3 motors (6354, 6364, or 6374). But why have a cover when you could make a fan to help cool the motors? I have yet to test the fluid dynamics of how the fan helps, but it seems to help on my first tests. Im using these in a dual surf rods setup, so im really tight on space. The cover doesn't stick out past the cans button, so with the right 3mm screws nothing will stick out past the and of the axle. There are two fans uploaded of each design so determine which side your motor will be mounted and get the corresponding fan. (one is designed for turning left and one right). here are the specs for each design: make sure you align the fan correctly, the cut outs should match the motor as well as have the screw holes line up.
Design v1.1
-30 blades mounted in a Backward-curved way so rocks are deflected off when spinning. the gap for a rock to get in is only 3.28mm by 5.2mm.
-Just needs about 10-12 grams of plastic and would probably be better to use a higher temp plastic. (Im just using regular PLA and will see how that works)
-needs 4 3mm screws between 4 and 10mm long (any longer and will hit windings)very strong design, less obstruction of holes on back of motor... only positive is less stringing of filament on your 3D printer
Design v2.1
-52 blades mounted in a Backward-curved way so rocks are deflected off when spinning. The gap for a rock to get in is only 1.7mm by 5.2mm on these blades.
-Just needs about 10-12 grams of plastic and would probably be better to use a higher temp plastic. (Im just using regular PLA and will see how that works)
-needs 4 3mm screws between 4 and 10mm long (any longer and will hit windings)This is a very good air flow fan, won't let any rocks in and is strong enough to take a few hits without breaking
Design V2.2 recommended
-52 blades mounted in a Backward-curved way so rocks are deflected off when spinning. The gap for a rock to get in is only 1.7mm by 7.2mm on these blades.
-Just needs about 10 grams of plastic and would probably be better to use a higher temp plastic. (Im just using regular PLA and will see how that works)
-needs 4 3mm screws between 4 and 10mm long (any longer and will hit windings)this is the design with the best airflow, but least strong so don't use if you have underside mounted Sk3 motors
Design v3.1 recommended if space isn't an issue
-52 blades mounted in a Backward-curved way so rocks are deflected off when spinning. The gap for a rock to get in is only 1.7mm by 7.4mm on these blades.
-Just needs about 12 grams of plastic and would probably be better to use a higher temp plastic.
-needs 4 3mm screws between 6 and 12mm long (any longer and will hit windings)This is the design with the best airflow, and also just as strong as the others. It does extend to the end of the axle though so its better where space isn't a concern