Tuesday, July 24, 2018

[Electric Boats] Re: converting Haswing Osapian trolling motor to PWM

 

Curtis,

Thanks for the additional information.  I will give one a try.  Will be interesting to compare to something like a Kipawa prop at low speeds.

It is going on a moderate displacement 18' cabin cruiser that has a 50hp outboard.  The trolling motor is for manoeuvring and docking where the outboard moves her too fast at idle speeds.  Also as something to get her into sheltered waters if the outboard is not functional.

John

--
Flatwater Electronics
www.flatwaterfarm.com
"Neurosurgery for computer looms."

__._,_.___
Posted by: John Acord <jcacord@gmail.com>
Reply via web post • Reply to sender • Reply to group • Start a New Topic • Messages in this topic (18)
Check out the automatic photo album with 8 photo(s) from this topic.
P1040736.jpg P1040735.jpg Screen shot 2016-09-19 at 8.03.20 AM.png Screen shot 2016-09-19 at 8.10.42 AM.png P1040910.jpg
Have you tried the highest rated email app?
With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app on the market. What are you waiting for? Now you can access all your inboxes (Gmail, Outlook, AOL and more) in one place. Never delete an email again with 1000GB of free cloud storage.

SPONSORED LINKS
.

__,_._,___
Posted by at No comments:

[Electric Boats] Re: converting Haswing Osapian trolling motor to PWM

 

John, APC 11x6 is indeed a model airplane prop. The one I have has held up well. The sport props seem to be the stoutest, and the electric props the thinnest. I think it has to do with the torque characteristics of different kinds of model airplane engines. You can get either tractor or pusher props. Pusher will have the same orientation as your trolling motor prop does now (aft prop). The spinner is for streamlining, and is especially important since my prop is pulling. I did that because of where the down shaft is mounted. It was too far back to leave room for fairing behind. With the prop pulling, the shaft is hear the front.

__._,_.___
Posted by: cpcanoesailor@yahoo.ca
Reply via web post • Reply to sender • Reply to group • Start a New Topic • Messages in this topic (17)
Check out the automatic photo album with 8 photo(s) from this topic.
P1040736.jpg P1040735.jpg Screen shot 2016-09-19 at 8.03.20 AM.png Screen shot 2016-09-19 at 8.10.42 AM.png P1040910.jpg
Have you tried the highest rated email app?
With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app on the market. What are you waiting for? Now you can access all your inboxes (Gmail, Outlook, AOL and more) in one place. Never delete an email again with 1000GB of free cloud storage.

SPONSORED LINKS
.

__,_._,___
Posted by at No comments:

Monday, July 23, 2018

[Electric Boats] Re: converting Haswing Osapian trolling motor to PWM

 

I'm interested in the propellers you used on your trolling motor.  Are those model aeroplane props?  Looking at some of the aeroplane props they look a little light construction.  How do they hold up?  And is the spinner used as a mounting fixture or just streamlining?  I'm looking primarily for low speed operation, 1-2kt. 

John Acord

--
Flatwater Electronics
www.flatwaterfarm.com
"Neurosurgery for computer looms."

__._,_.___
Posted by: John Acord <jcacord@gmail.com>
Reply via web post • Reply to sender • Reply to group • Start a New Topic • Messages in this topic (16)
Check out the automatic photo album with 8 photo(s) from this topic.
P1040736.jpg P1040735.jpg Screen shot 2016-09-19 at 8.03.20 AM.png Screen shot 2016-09-19 at 8.10.42 AM.png P1040910.jpg
Have you tried the highest rated email app?
With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app on the market. What are you waiting for? Now you can access all your inboxes (Gmail, Outlook, AOL and more) in one place. Never delete an email again with 1000GB of free cloud storage.

SPONSORED LINKS
.

__,_._,___
Posted by at No comments:

Monday, July 16, 2018

[Electric Boats] Re: converting Haswing Osapian trolling motor to PWM

 

Chinese PWM controllers can be like that. A spare is always a good idea. Overheating is often the culprit. The factory is sometimes a bit optimistic on the power rating or duty cycle whatever.



---In electricboats@yahoogroups.com, <cpcanoesailor@...> wrote :

During a boisterous day sailing yesterday, the 60A PWM motor controller failed. It may have gotten a drop of water, but not sure. The motor wouldn't turn when I needed it, so I turned off the controller, but left the main switch on. About an hour later, the motor started thrashing, so I went for the main switch. Later on, I tried to use the controller, but all I got when I turned the main switch on was some smoke from the controller. I ended up sailing and rowing the rest of the way home, but missed my lunch stop.

This was a cheap Chinese 60A controller that I installed in a small waterproof case. However, the case was a lot yesterday.

__._,_.___
Reply via web post • Reply to sender • Reply to group • Start a New Topic • Messages in this topic (15)
Check out the automatic photo album with 8 photo(s) from this topic.
P1040736.jpg P1040735.jpg Screen shot 2016-09-19 at 8.03.20 AM.png Screen shot 2016-09-19 at 8.10.42 AM.png P1040910.jpg
Have you tried the highest rated email app?
With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app on the market. What are you waiting for? Now you can access all your inboxes (Gmail, Outlook, AOL and more) in one place. Never delete an email again with 1000GB of free cloud storage.

SPONSORED LINKS
.

__,_._,___
Posted by at No comments:
Subscribe to: Posts (Atom)