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Small vertical wind turbine

by cyborg527, published

Small vertical wind turbine by cyborg527 Jul 10, 2011

Description

this is a small wind turbine, almost entirely able to be printed out.

KIT1 (OUTDATED)
midassembly x8
findimensions x32
bottombrace x 2
2 perm magnets
1 6mm Dia, 3ft smooth rod
1 Mounting board
Kit2 (OUTDATED)
midassemblyv2
findimensionsv2
bottombracev2
2 perm magnets
1 6mm Dia, 3ft smooth rod
1 Mounting board
Kit3
midassemblyv3 x 8
findimensionsv3 x32
bottombracev2 x2
2 perm magnets
1 6mm Dia, 3ft smooth rod
1 Mounting board
COST
midasseblyv2 5.294in3*20.15633g =106.70763g
=.23525 pounds * $12/lb = $2.823

finv2 .575in3*20.15633g= 11.589g
11.589g*0.00220462262=.025549% of $12
=$.31
assembled mid=$4.04
153 grams per section
1224g per turbine = 2.6lb
$32 for wind turbine printed parts.
or half of a 5lb spool

Recent Comments

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nice work, how much power can this vertical turbine generate please ?

Or alternatively, use ball bearings - with one caveat. Ordinary sealed ball bearings have quite a lot of drag due to the rubber seals. It's best to use open (non sealed) bearings, although most bearings sold these days are sealed.

A number of years ago a modelling colleague told me a trick - take a sealed bearing and remove the metal shields and rubber seals, then boil in kerosene to remove the grease. The result is a very low friction ball bearing. The only real issue is that you have to keep the dust out, which you could achieve with a labyrinth seal.

thanks for that, Ill try fixing it up, I have a couple more things to add to it as well.

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Instructions

It needs one 6mm 3ft long smooth rod down the center, and 3mm screws to attach the body pieces together, and to hold the fins in place. The fin assemblies should be 4 inches tall when printed. Furthermore the bottom brace holds up the entire fin system with two magnets that repel so it is levitating.
I do not yet have a reprap assembled (I am still waiting on a couple part to work) So I do not yet know if this model is going to work or not. But I encourage people to print it out and give me feedback on what needs changed.

Comments

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chrigui on Feb 3, 2014 said:

nice work, how much power can this vertical turbine generate please ?

mrwolfe on Aug 30, 2013 said:

Or alternatively, use ball bearings - with one caveat. Ordinary sealed ball bearings have quite a lot of drag due to the rubber seals. It's best to use open (non sealed) bearings, although most bearings sold these days are sealed.

A number of years ago a modelling colleague told me a trick - take a sealed bearing and remove the metal shields and rubber seals, then boil in kerosene to remove the grease. The result is a very low friction ball bearing. The only real issue is that you have to keep the dust out, which you could achieve with a labyrinth seal.

ApexDesign on Jul 10, 2011 said:

To allow your thing to spin more freely, I suggest opening the bore in the center so that there is a bearing surface only at the ends. In this way, the thru bore does not need to be perfectly straight and there is a generous clearance in the center. Only the bore diameters at the ends will important. Hoping to help

cyborg527 on Jul 10, 2011 said:

thanks for that, Ill try fixing it up, I have a couple more things to add to it as well.

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