[PSUBS-MAILIST] Plastic Propeller

[irox via Personal_Submersibles]

Hi Alan,

it might be a bit big for you, but the smallest cheap counter rotating prop set
I've found is from "Quick", they do a 4 blade 185mm in RH and LH for $40-$80 (depending
on where you order them).  Part numbers:
 BTQ185 LH (QI55507)
 BTQ185 RH (QI55508)

http://www.quickusastore.com/bow-thrusters/spare-parts/bow-thrusters-propellers.html

I got a pair and installed the on cheap ($45) trolling motors.  They made a big difference over the stock props, but of would probably burn out the cheap trolling motors quickly.  I didn't get around to look into reducing the diameter to better match the motors (plus I want to use better motors anyway).

An SLA 3D Printer may be able to print something which could be used (after UV curing).

Cheers,
  Ian.

-----Original Message-----
>From: Alan via Personal_Submersibles <personal_submersibles at psubs.org>
>Sent: Apr 13, 2017 4:52 PM
>To: personal_submersibles at psubs.org
>Subject: [PSUBS-MAILIST] Plastic Propeller
>
>Greg, (or anyone else as knowledgeable)
>I am going to test a Vetus 146mm propeller soon. On paper it
>seems a good match to my motor. I have not seen a left hand prop (which I
>need) & the right hands go between $56- & $100-. Also I may need a slightly
>smaller diameter. They are made of delrin. 
>Is there an easy / inexpensive way of replicating 
>something similar? I was thinking they could be printed & the print used
>as a lost wax type aluminium casting.
>I could make a silicon mold from a print & cast a fiber reinforced propeller, 
>but aren't sure about the strength & quality I could get.
>Any thoughts on the best way of doing this?
>Thanks, Alan
>
>
>Sent from my iPad
>
>_______________________________________________
>Personal_Submersibles mailing list
>Personal_Submersibles at psubs.org
>http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles