February 20, 2026
Description
Hi!
This is my Helical Plus Six Belt Driven Nema Turbine. This is a step up from my previous wind turbine design with a six blade main blade and a helical center blade. I have also included my tri blade mount, six blade center blade and post top mount so you can use them as well if you like. If you check out my Instagram profile you will find reels of the turbine in action. (Link in bio or just search for rumbling.werewolf)
The turbine is now geared up with a small belt drive. The ratio is 3:1 so one turn of the blades creates 3 turns of the Nema motor. This spins the motor faster for an increased power output. The phases of the motor are connected to a custom built rectifier, you can see the layout in the attached drawings.
I'm currently feeding the output of the rectifier into a DC-DC converter with an input range of 20-60v and an output of 12v to power a light. There are a lot of converters out there with different inputs and outputs to choose from, this one suited my needs for testing.
I have added a parts list to one of the attached drawings, it also shows exploded views and part locations to help you put it together. As alway be careful, remember its an experiment and have fun!
R.W.W.
Update 19-03-26
I Made a new rectifier and photographed the board layout at each stage of construction. Photos are now available on my instagram profile.
I used the following purchaced components to create my turbine along with th 3d printed parts.
Linear Rod 2pcs 10mm x 400mm & 1pcs 10mm x 300mm for the vertical shaft but a 400mm would work too.
M5 x 25mm Hex Head Bolts Set with Nylon Nuts and Washers
Thrust Bearing's F10-18M
1N5408 Rectifier Diodes General Purpose Silicon Rectifiers, 3A, 1000V
***Electrolytic Capacitor 1000uF 50V Aluminum*** Update 13-03-26, Im upping these to 1000uF 100v after spotting the originals have started to show signs of over heating. It could be age with mine, I have been using them for over a year now but better safe than sorry.
Nema 23 Stepper Motor 57x56mm Body 1.8 Stepper Angle 2.0A 2 Phase 4-Lead
6000RS Deep Groove Ball Bearings 10 x 26 x 8mm High Carbon Steel Double Sealed Bearings
Double Sided Prototype Universal Printed Circuit Board
The protototype board size that fits the model is 50mm x 70mm
M4 Nut and Bolt (pan head with hex) set 500 pcs + M4 spring washers
have a look at the parts list for sizes and quantitys, i cant find the exact set I purchased as its not in stock but this set looks similar.
Belt and Pulleys - 60 Teeth:10mm Bore,20 Teeth:8mm Bore
2pcs 2GT 60 Teeth Synchronous Wheel, 2pcs 2GT 20 Teeth Synchronous Wheel, 2pcs Length 200mm Width 6mm Belt , 4pcs M4 screws, 1pcs Allen Key
DC-DC converter 20-60v in 12v out ( check out RS components for lots more)
License:
Standard Digital File License
Rumbling Werewolf
