SMALL - espritmodel.com SMALL - Telemetry SMALL - Radio
Reply
Thread Tools
Old Feb 15, 2012, 01:15 PM
Registered User
Tim B.'s Avatar
Oakland Ca.
Joined Aug 2009
8,729 Posts
24 volt

Quote:
Originally Posted by Robert Pulse View Post
Woo Hoo I got parts. I also was looking at these to replace the astroflight motors on the belt drives. Price is right.
Bob

http://www.ebay.com/itm/PITTMAN-9213...item3c9dbecf5c
Those are 24 Volt...
Is that what you want ?
Tim B. is offline Find More Posts by Tim B.
Reply With Quote
Sign up now
to remove ads between posts
Old Feb 15, 2012, 01:44 PM
Registered User
Robert Pulse's Avatar
Davenport, Iowa
Joined Apr 2007
1,408 Posts
Listed as 24 volt 3600 rpm 12 volt 1800 rpm Maybe? Oh ya I ordered them!
Bob

I have had that kind of motor before in a 55 inch cabin cruiser and could run all day on 12 volt batteries
Robert Pulse is offline Find More Posts by Robert Pulse
Last edited by Robert Pulse; Feb 15, 2012 at 02:14 PM.
Reply With Quote
Old Feb 15, 2012, 02:28 PM
Registered User
Robert Pulse's Avatar
Davenport, Iowa
Joined Apr 2007
1,408 Posts
Astroflights

I just did an RPM check on the astroflights and at 12 volt, output RPM is 3650 no load. Way too fast for a tug so if the pittman's run 1500 to 1800 RPM max, direct drive,
I can control top end speed better. They are very powerful motors. I'll test them when I get them.
Bob
Robert Pulse is offline Find More Posts by Robert Pulse
Reply With Quote
Old Feb 15, 2012, 04:30 PM
Registered User
Tim B.'s Avatar
Oakland Ca.
Joined Aug 2009
8,729 Posts
Clear, the lower RPM's sure make sense for this boat.
Tim B. is offline Find More Posts by Tim B.
Reply With Quote
Old Feb 20, 2012, 05:48 PM
Registered User
Robert Pulse's Avatar
Davenport, Iowa
Joined Apr 2007
1,408 Posts
Pittman motors came today

I got the pittmans today and hooked them to the 12 volt battery and as I thought 1950 rpm on a mechanical tach. Super quiet. I'll have to test one with the props on the tug to see where they come in. I think these would even be good in the lindberg cc. Looks like I need to do some testing.
Bob
Robert Pulse is offline Find More Posts by Robert Pulse
Reply With Quote
Old Mar 14, 2012, 10:44 AM
Registered User
Robert Pulse's Avatar
Davenport, Iowa
Joined Apr 2007
1,408 Posts
tug update 3-14-12

Ok I have been working on the tug again. I installed all the bulkheads and the motor mount. I added some mounting crossmembers to screw the radio box to. I painted the interior of the hull with zinsser B.I.N. primer, to cover all the crap in the hull with primer. I then sprayed the interior and deck with rust-oleum multi color textured paint. (#223524 Desert Bisque) It gives it a nice textured finish that hides imperfections. Unless you stick your finger in it to see if it is dry yet LOL. I then masked the deck and cabin deck and painted them grey, After that was dry I masked off the deck and primed the hull exterior. After that was dry I masked the waterline (according to dumas's plans and painted the upper portion hunter green. The green is close enough for me. I let that all dry and installed the motors, and steering servo. I sat down the other night to assemble the wheelhouse and realized I didn't have the floor, back wall or the roof so I went back to dumas and ordered them. Now I wait for them. I also picked up some 1/2" lexan for the new stand and got it all cut out, I just have to assemble it. So consider yourself updated.
Bob
Robert Pulse is offline Find More Posts by Robert Pulse
Reply With Quote
Old Mar 14, 2012, 10:55 AM
Registered User
Tim B.'s Avatar
Oakland Ca.
Joined Aug 2009
8,729 Posts
Looks great !
Never know it was the same model you started with.
Tim B. is offline Find More Posts by Tim B.
Reply With Quote
Old Mar 14, 2012, 05:43 PM
Registered User
Robert Pulse's Avatar
Davenport, Iowa
Joined Apr 2007
1,408 Posts
Quote:
Originally Posted by Tim B. View Post
Looks great !
Never know it was the same model you started with.
Thanks Tim
Robert Pulse is offline Find More Posts by Robert Pulse
Reply With Quote
Old Mar 14, 2012, 06:05 PM
Registered User
United States, CA, Hayward
Joined Feb 2006
892 Posts
Robert Over the years have found out that 3650 is the Sweet Spot for a Shelly so if you want to sell off those Astro's let me know. The Pitmans will be a bit slow for tug work, use the 12 volt version at 3400 R's and it is sweet.
CaptLee is online now Find More Posts by CaptLee
Reply With Quote
Old Mar 14, 2012, 08:40 PM
Registered User
Robert Pulse's Avatar
Davenport, Iowa
Joined Apr 2007
1,408 Posts
astro flights

I want to see how it goes with the pittmans before I part with the astros. I installed master airscrew motors in the belt drives and they overheat without connecting them to anything so I wont be using them anytime soon. What is the average ballast weight for the shelly when all is said and done? Also what props are being used?
Bob
Robert Pulse is offline Find More Posts by Robert Pulse
Reply With Quote
Old Mar 15, 2012, 10:58 AM
Registered User
Tim B.'s Avatar
Oakland Ca.
Joined Aug 2009
8,729 Posts
Props

Quote:
Originally Posted by Robert Pulse View Post
What is the average ballast weight for the shelly when all is said and done? Also what props are being used?
Bob
Don't know ballast yet on the Nancy M.
I bought new props form Harbor Models, 75mm Rivabo's, I dont have nozzles though so I dont know it they would be correct for your set up.
You have 1/8 or 3/16 prop shafts ?
Tim B. is offline Find More Posts by Tim B.
Reply With Quote
Old Mar 15, 2012, 11:56 AM
Registered User
Robert Pulse's Avatar
Davenport, Iowa
Joined Apr 2007
1,408 Posts
Props

Shaft size is 1/8th and this is what the props look like
Bob
Robert Pulse is offline Find More Posts by Robert Pulse
Reply With Quote
Old Mar 15, 2012, 12:22 PM
Registered User
Tim B.'s Avatar
Oakland Ca.
Joined Aug 2009
8,729 Posts
Dumas props

Are these props not OK ?
ONE 1.5 inch Dumas 3 blade brass prop is $28.00, $33.00 for a three inch...
can you keep these ?
Tim B. is offline Find More Posts by Tim B.
Reply With Quote
Old Mar 15, 2012, 01:35 PM
Registered User
Robert Pulse's Avatar
Davenport, Iowa
Joined Apr 2007
1,408 Posts
props

Tim
I think the props are fine. 2 3/4 " Works for me. I'm sure I wont find anything at our lake heavy enough for it to be any kind of problem
Bob
Robert Pulse is offline Find More Posts by Robert Pulse
Reply With Quote
Old Mar 15, 2012, 01:45 PM
Registered User
United States, CA, Hayward
Joined Feb 2006
892 Posts
Running a set of 3" Kort nozzle Prop Shop props on the 12v Pitman and it handles a 250# barge just fine with a 4.6amp draw. Have not weighed her out in a while but seem to remember it is in the 20# area.
CaptLee is online now Find More Posts by CaptLee
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Cool Indoor Meet and Swap Meet in PA CarreraGTSCS Micro Ready-to-Fly 0 Jan 12, 2012 10:42 PM
Cool Indoor Meet and Swap Meet in PA CarreraGTSCS Scratchbuilt Indoor and Micro Models 0 Jan 12, 2012 10:40 PM
Off Site Indoor Meet and Swap Meet in PA CarreraGTSCS Aircraft - Electric - Airplanes (FS/W) 0 Jan 12, 2012 10:39 PM
Off Site Indoor Meet and Swap Meet in PA CarreraGTSCS Aircraft - Electric - Micro & Indoor Airplanes (FS/W) 0 Jan 12, 2012 10:38 PM
davenport iowa swap meet riverrat Electric Flight Events 1 Jan 18, 2004 11:23 AM