LO VOLT Electric Motor System

About powering boats with electricity

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BobWillson
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Location: Winter Park, Florida

Re: LO VOLT Electric Motor System

Post by BobWillson » Sat Aug 18, 2012 3:51 pm

Well Mike and I tried. Worked on the electrical system all day today and discovered several other problems that were not completly clear. Resolved all the issues got the power to the motor but no go. We are thinking the problem now might be in the programed controller or something obviouse we have overlooked. :|

Enjoying the challanges.

If not tomorrow then more likely the 31st.
Bob
When ever you face trials of any kind consider it with great Joy.

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BobWillson
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Re: LO VOLT Electric Motor System

Post by BobWillson » Tue Aug 28, 2012 7:31 pm

This evening solved the problem some what. Motor is a serial moter and the plans for connecting we were working from were for a parallel designed motor.

So --- changed the motor attachment and now have a motor that runs. BUT only in forward not reverse. Always learning something . We think we know the problem but want EVA to give the final blessing on the change to make sure.

Should have this small problem solved by Thursday.

Paul who made the cushions wasn't happy with the look of them. SO-- he took them all back today and wants to redo them so they are perfect.

The trailer is to be reworked this Friday morning with all the parts ready to go.

Still on track to have the Launch Labor Day.

Aways having fun and learning patience.
Bob
When ever you face trials of any kind consider it with great Joy.

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BobWillson
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Re: LO VOLT Electric Motor System

Post by BobWillson » Sun Sep 02, 2012 10:26 am

Found the problem and with a quick 30 min fix the motor is running great. The relay for the forward and reverse needed to be powered by 48 not 12 volts. Slight miss communication on all of our parts but not a problem since the forward and reverse controlller can handle the increased voltage.

Problem was fixed and it runs perfectly.

Had sea trials yesterday and found that the flange shaft set screws tend to loosen up when they heat up and the staft came forward. Not a problem since the strut will keep it from really flying forward. The prop is not turning more than maximally around 1100 rpm no great harm done. Was able to retighten the set screws once again. I think this will be something that needs to be check after every trip for a while.

We are currently drawing up our final now the 11 schematic of the electrical.

If anyone wants to do this you really need to make sure you have a friend who is an electrical engineer type or understand DC power supply well yourself.

I will post one more time with a final wrap up after this weekend. I will continue to post over under the construciton thread.
Bob
When ever you face trials of any kind consider it with great Joy.

slug
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Location: Colborne ON Can

Re: LO VOLT Electric Motor System

Post by slug » Sun Sep 02, 2012 2:05 pm

Bob; Regarding set screws... did you use the square headed set "bolts"?
They usually have holes drilled thru the head so you can thread a wire thru and interlock the bolts from unwinding.
Doug

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BobWillson
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Re: LO VOLT Electric Motor System

Post by BobWillson » Sun Sep 09, 2012 3:35 pm

I thought about that but the set screw's head is beneath the flange berring surface. On he second day the boat was really pushed and we had no trouble. I think it was the heating up that loosened the screw the first tiime. I was able to retighten it up while still hot so the problem is solved. Just need to keep a watch on it.

Thanks for the Idea.
Bob
When ever you face trials of any kind consider it with great Joy.

khundley
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Re: LO VOLT Electric Motor System

Post by khundley » Sun Sep 09, 2012 9:09 pm

Would some Loctite help there?
Ken Hundley
http://www.nocturnalguitars.com

So, my big brother was playing guitar and I figured I'd try it too.
- Stevie Ray Vaughan

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BobWillson
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Re: LO VOLT Electric Motor System

Post by BobWillson » Mon Sep 10, 2012 7:17 pm

You know it just might. But would it be a one way street? Could I ever get it undone if i wanted?
Thank will keep it in mind.
Bob
When ever you face trials of any kind consider it with great Joy.

Trackhappy
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Location: Sunshine Coast, Queensland, Australia. Building Gentry.

Re: LO VOLT Electric Motor System

Post by Trackhappy » Mon Sep 10, 2012 7:48 pm

Hi Bob,

You just have to use the right grade of Loctite. In most cases Loctite softens with a little heat if it is ever a problem as well. 243 sounds like the stuff. Link to pdf below:
http://hybris.cms.henkel.com/medias/sys ... 579776.pdf
By the time I have built a boat, I'll be ready to build a boat....

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BobWillson
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Location: Winter Park, Florida

Re: LO VOLT Electric Motor System

Post by BobWillson » Tue Sep 11, 2012 6:49 am

Thanks will dol
Bob
When ever you face trials of any kind consider it with great Joy.

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