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« on: December 29, 2011, 01:52:30 PM »
roopeshkrishna
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Good after noon all my Friends...last night, after working on some models, i started to sketch,about an aircraft wheel, in scale, for the Anti Skid Brake simulator. then was examining some nuts and bolts, to hold the scaled wheel in place..suddenly an idea strikes in my brain..and, when i re examined..it was clear...making a propeller from a nut..!!!  sure, you can see a nut, with 6 sides, and each and every side will be placed in exact direction to 120 degree..!!!
so it was not much to think..started the work..i took a bicycle spoke,with 4 mm shaft..and found a nut, a self sealing nut, actually it came from spare exhaust muffler of an aero engine..

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« Reply #1 on: December 29, 2011, 01:54:51 PM »
roopeshkrishna
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can see the exact angle of each sides...
draw a line in all intermittent sides, in to clock or counter clock direction you need...
then draw a template for blades,on a thick card paper..the size of the blade..all up to you...

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« Reply #2 on: December 29, 2011, 01:55:25 PM »
roopeshkrishna
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now cut out the template..and draw three blades in an aluminum sheet, and cut it out with a meat cutting scissors..i used an aluminum vessel lid..

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« Reply #3 on: December 29, 2011, 01:55:56 PM »
roopeshkrishna
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grind off any unevenness over blades, and sand it smooth with file..
now start making a ridge along the line that we draw on the sides of the nut...take care while making the ridges, as it can damage the thread..

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« Reply #4 on: December 29, 2011, 01:56:25 PM »
roopeshkrishna
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make sure the ridges are in straight line and in same angle..
check out any unevenness..

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« Reply #5 on: December 29, 2011, 01:57:06 PM »
roopeshkrishna
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take the same bicycle spoke, and load the nut on its thread..

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« Reply #6 on: December 29, 2011, 01:57:33 PM »
roopeshkrishna
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now take some industrial cyano glue, and start to attach the cleaned blades one by one..remember..use only industrial grade cyano glue..not domestic..

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« Reply #7 on: December 29, 2011, 01:57:58 PM »
roopeshkrishna
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now complete the attachment...
and it is now in shape...

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« Reply #8 on: December 29, 2011, 01:58:22 PM »
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make sure the three blades are in accurate positions..and apply more glue all over the base of the blades...wait to dry for some minutes...
take the same bicycle spoke, and cut it in to desired needed length..

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« Reply #9 on: December 29, 2011, 01:58:47 PM »
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now..take a nipple for the same spoke, and cut it halves..

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« Reply #10 on: December 29, 2011, 01:59:12 PM »
roopeshkrishna
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oad the nipple as narrow side facing in...
and thread in the prop as shown..tight it with nose pliers..and apply industrial cyano in its root...

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« Reply #11 on: December 29, 2011, 01:59:38 PM »
roopeshkrishna
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make sure it if fixed firm...
and time to test..drill a simple hole along the spoke, and attach the shaft to the motor..and bolt it tight...

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« Reply #12 on: December 29, 2011, 02:00:06 PM »
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we can make a simple motor coupler with same spoke nipple, simply driving to the motor shaft...and drill a straight hole..to hold the shaft...and can grind out the shaft, after drilling on it , so it will give some play inside the nipple, gives us a privilege of an universal joint...

after extensive test i painted it in rust metallic ...

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« Reply #13 on: December 29, 2011, 02:00:32 PM »
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Friends..i took about half an hour to make this with a tea...and working..?..amazing..great than my newly purchased commerical prop...with all motors...i made 6 more and made two in to high thrust, by applying some two part epoxy putty, on the inner side of the prop, and later ground out as in shape of hydrofoils..so..low speed..high thrust...and two with 6 blades, in shape of scimitar...result..even more thrust at low speeds...here you can see how simple is to make a pro is...no cost..no worry..can adjust the pitch up to your need..steep narrow blades for low speed..and flat broad low pitched for high speed...to avoid cavitation..later i made 4 more using washers in appropriate size...and converted it in to high thrust with epoxy putty...try some..and make some lovely craft....unstoppable... Drool

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« Reply #14 on: December 29, 2011, 02:04:38 PM »
roopeshkrishna
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Happy New Year...

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« Reply #15 on: December 29, 2011, 02:20:34 PM »
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man you are genius! really wonderful. with the limited resources you have done something extraordinary.keep it up your DIY work.
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« Reply #16 on: December 29, 2011, 02:27:43 PM »
roopeshkrishna
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Dharmik..i hope my works help you all..to make some good crafts....thank you.. Drool Drool
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« Reply #17 on: December 29, 2011, 02:47:02 PM »
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« Reply #18 on: December 29, 2011, 06:03:14 PM »
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Rajesh..dont worry..i will help you.. Thumbs Up
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« Reply #19 on: December 29, 2011, 06:46:44 PM »
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here my high thrust low speed prop..is working very well...
no any extra ordinary materials is used..i made it from three washers, with same idea with a nut...
after fixing the washers as leaves, i mixed some PU putty with hardener, applied it over the blades..(behind )..

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« Reply #20 on: December 29, 2011, 06:47:23 PM »
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after drying the PU putty..sand it to a hydrofoil...
makes it a high thrust one...

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« Reply #21 on: December 29, 2011, 06:47:57 PM »
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you can see the foil structure in this photograph...
and painted with metallic rust...

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« Reply #22 on: December 29, 2011, 06:48:32 PM »
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and after painting it became even smooth...
ready for action...

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« Reply #23 on: December 29, 2011, 06:49:23 PM »
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look how easy it is...anyone can do..and it performs greater than commercial one that i bought...with this i am saving lots of battery power for a long drive.
and it is not feasible to sit in lazy...so we need an even more high thrust prop...for my oncoming tugs...so i just tested with this design..and result..unimaginable..its a scimitar type..with 6 blades...

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« Reply #24 on: December 29, 2011, 06:49:46 PM »
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i made it in to two each for both sides...

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« Reply #25 on: December 29, 2011, 06:50:13 PM »
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Friends..see  how simple is to make a pro our own..even much proud of ourselves...1000% satisfying..so..please dont be lazy..make lots of crafts ...this New Year brings you full  of joy and happiness along with prosperity as your craft swims in waters...coolll..........

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« Reply #26 on: December 29, 2011, 06:53:49 PM »
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 Bow  Brilliant ideas, excellent work.  Merry CHRISTMAS and Happy New Year.
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« Reply #27 on: December 29, 2011, 07:18:29 PM »
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thank you friends..hope i can see many crafts all over here...
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« Reply #28 on: May 06, 2012, 12:32:47 AM »
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thanks alot for this super idea.....  Bow Bow Hats Off Hats Off
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« Reply #29 on: May 06, 2012, 10:33:01 AM »
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 Salute
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