$txt['youtube'] = 'YouTube'; $txt['youtube_invalid'] = '#Invalid YouTube Link#'; Performance Impeller

Author Topic: Performance Impeller  (Read 20063 times)

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Offline Heavynets

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Re: Performance Impeller
« Reply #30 on: October 27, 2016, 05:55:31 PM »
The dimensions in your photos and the sketch don't appear to agree.  The few dimensions that I can get of my impeller are different yet.  Probably not a big deal at this point.  Maybe this drawing looks better?

« Last Edit: October 27, 2016, 05:57:16 PM by Heavynets »

Offline Heavynets

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Re: Performance Impeller
« Reply #31 on: October 27, 2016, 06:04:03 PM »
This screen shop may be bigger, but will have graphic card issues.

Offline Painlesstom

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Re: Performance Impeller
« Reply #32 on: October 27, 2016, 08:13:20 PM »
Dial caliper isn't always the most accurate for blueprinting something. I was also measuring a different impeller. The two critical measurements that I saw in your drawing that could be a problem, would be the .771 front opening and .298 recess in the back. Those two should be safer at .780 and .280 respectively. Other than that I think it looks great. Cad is something I always wish I had spent the time to learn, especially since I took mech drafting and drawing in high school.
Tom

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Offline Heavynets

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Re: Performance Impeller
« Reply #33 on: October 27, 2016, 10:20:48 PM »
I'll change those dimensions and then start designing the blades.

I've done a lot of CAD work, most of it in 2-D.  The 3-D software I'm using now is free, but more powerful than the ones I paid thousands of dollars for.  I've only used it a short while and just starting to figure it out.  Old brains and new technology don't mix well.

Offline Painlesstom

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Re: Performance Impeller
« Reply #34 on: October 27, 2016, 11:26:37 PM »
Great, looking forward to seeing what you come up with.  \./8

What is the free software you are using? Got a link?
Tom

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Offline Heavynets

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Re: Performance Impeller
« Reply #35 on: October 28, 2016, 11:06:42 AM »
Fusion 360, it's from Autodesk the makers of AutoCad.  Here is a link.

http://www.autodesk.com/products/fusion-360/overview

It is a bit overwelming.  It includes CAM, animation and finite element analysis capabilities.  I suggest you start with 123D design software.  It's free, much simpler, but frustrating on more complicated designs.  It too is from Autodesk.  Its link is: http://www.123dapp.com/design

A lot of good instructional videos for both on YouTube.

Offline Painlesstom

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Re: Performance Impeller
« Reply #36 on: October 28, 2016, 06:53:14 PM »
Awesome, thanks. Now to see how fast I pick up on it. I used to play with 3d Max years ago for animation, I'm sure this is a little less complicated. Will be a brain teaser for sure.  :D
Tom

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Offline riverboater

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Re: Performance Impeller
« Reply #37 on: February 09, 2017, 12:06:45 AM »
In preparation for an assault on an impeller redesign, I have been doing a little homework. I have also been emailing with Peter to better understand the work he did on his boats. I think a new impeller will also require a longer wear ring area and different stator / housing. As a start, I began by modeling the existing unit.


Cheers, Steve


<iframe src="https://myhub.autodesk360.com/ue29b4221/shares/public/SHabee1QT1a327cf2b7ad948c8522c679c5d?mode=embed" width="800" height="600" allowfullscreen="true" webkitallowfullscreen="true" mozallowfullscreen="true"  frameborder="0"></iframe>

Offline Painlesstom

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Re: Performance Impeller
« Reply #38 on: February 09, 2017, 07:12:06 AM »
Nice work! Excited to see what you come up with.  >:D
Tom

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Offline Hillbilly

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Re: Performance Impeller
« Reply #39 on: February 10, 2017, 07:44:12 AM »
Exciting stuff, Riverboater.  This may be the next big step.  Looking forward to following along.  Thanks

Offline riverboater

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Re: Performance Impeller
« Reply #40 on: February 11, 2017, 04:42:09 PM »
Thanks guys. Updated model with the steering nozzle.

Will start on the replacement design now. Don't hold your breath though... I still have a day job which supports all of my bad habits like having food with my meals and such.

Cheers, Steve

Offline mosski

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Re: Performance Impeller
« Reply #41 on: September 07, 2017, 11:40:18 AM »
Any recent updates on the jet impellers?  Sounds like a interesting direction.

Offline Painlesstom

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Re: Performance Impeller
« Reply #42 on: September 07, 2017, 07:29:46 PM »
There is a prototype design that is ready for the testing phase, but haven't had time to post about it here and see if there are any members who would be interested in contributing a few $$ toward the $320 price tag to have a stainless 3d print done that I can actually test. I'll post some pictures of it later when I get home.
Tom

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Offline riverman

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Re: Performance Impeller
« Reply #43 on: September 08, 2017, 12:16:14 AM »
I'm good for 50, now we just need another half dozen members to pitch in, let me know where/when to send a check.
Definitely worth the money to experiment on a new design that could improve some level of performance.     

Offline Painlesstom

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Re: Performance Impeller
« Reply #44 on: September 08, 2017, 07:13:36 AM »
Cool, sounds good. As soon as there are enough people to make it happen, then everyone can submit their contribution. Just bear in mind it could be a complete flop and prove to be no improvement at all, such is the reality of R&D. LOL

The blades are much wider with some overlap, and only 7 blades now instead of 8. It looks like it could be more efficient but that's what testing is for. Excited to try it out eventually.
Tom

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