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Author Topic: Linda Carol Moran build  (Read 19650 times)

escipion

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Re: Linda Carol Moran build
« Reply #75 on: August 17, 2015, 10:15:51 PM »

Nice work Tex  :-)) congratulations

I recommend you to paint, or put, the small white line around the hull , really makes her look different
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CaptTex

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Re: Linda Carol Moran build
« Reply #76 on: August 17, 2015, 10:20:41 PM »

Thank you sir! Yeah I might have to do that! I'm working on towing gear and bumpers right now, I've been looking at other kits and they are so expensive! I'm wanting to do a tractor tug but i don't know if a hull and scratch build is the way to go, I did enjoy making custom parts for the Carol.


Tex
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Built-Carol Moran 1/72 (still tweaking)

CGAux26

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Re: Linda Carol Moran build
« Reply #77 on: August 17, 2015, 10:31:07 PM »

Not a lot of real tugs have waterline stripes.  You might want to check what the original boat had before deciding.  Plus adding a waterline now means taking everything out of the boat so you can turn it over and mark the waterline.
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CaptTex

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Re: Linda Carol Moran build
« Reply #78 on: August 17, 2015, 10:33:35 PM »

That would be a pain! Considering two batteries, engine, esc, servo and switches......she is stuffed with equipment not to mention ballast. I'm actually going to swap two of her 8 oz weights for 4 oz replacements. I do like the line though, makes her stand out.
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Built-Carol Moran 1/72 (still tweaking)

escipion

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Re: Linda Carol Moran build
« Reply #79 on: August 18, 2015, 12:42:33 AM »

Hello!!!
Don't know if you are talking about the line I recommended, It's not the waterline, it's the white one that goes around the hull at the deck elevation, the original Moran's tugs have it

http://www.morantug.com/site/#/home

Best regards
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CaptTex

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Re: Linda Carol Moran build
« Reply #80 on: August 18, 2015, 12:48:29 AM »

That's what I was thinking but I wasn't too sure, all the same it's helpful advice!


Tex
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Built-Carol Moran 1/72 (still tweaking)

CaptTex

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Re: Linda Carol Moran build
« Reply #81 on: August 18, 2015, 06:54:59 AM »

So the shaft side of the dog bone is still slipping from the set screws grip, I'm at a loss guys any ideas?


Tex
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Built-Carol Moran 1/72 (still tweaking)

Umi_Ryuzuki

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Re: Linda Carol Moran build
« Reply #82 on: August 18, 2015, 09:12:22 AM »

Use a metal file to cut a flat spot on the propeller and motor shafts.


 :-))

david48

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Re: Linda Carol Moran build
« Reply #83 on: August 18, 2015, 12:37:15 PM »

Set the coupling where you want it ,take out the grub screw and mark the shaft , remove coupling and the drill a dimple into the shaft , just the depth of the drill angle so when you build it al back up the grub screw will go into the depression , when it's home put another grub screw on top so that it locks it in.
David
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CaptTex

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Re: Linda Carol Moran build
« Reply #84 on: August 18, 2015, 12:49:30 PM »

Awesome, thanks guys! Will be trying this when I get home from work!


Tex
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CaptTex

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Re: Linda Carol Moran build
« Reply #85 on: August 19, 2015, 04:46:37 AM »

It's one problem after another....fixed the coupling and tub tested her, outstanding amount of thrust with the new 3 blade 30mm brass prop! Threw water everywhere, she could handle full astern on the transmitter, but all ahead had to be moderated to maybe 1/4 on the tx. Then......smoke! Shut everything down and checked everything, the motor literally burned me when I touched it......the motor came off a heli and I don't think it's brushless because it only has two leads, it was powered by a 7.4v 2s lipo, ideas? I didn't think the power source mattered, could be wrong she currently has a 3000 mah 7.2v NIMH as the main power supply.




Tex
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Umi_Ryuzuki

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Re: Linda Carol Moran build
« Reply #86 on: August 19, 2015, 07:45:00 AM »

 It has nothing to do with the battery, or other equipment.
I would say too many RPM trying to turn a large propeller.
Just too large a load for that motor.  {:-{

CGAux26

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Re: Linda Carol Moran build
« Reply #87 on: August 19, 2015, 02:01:07 PM »

Are your batteries wired in series, giving 14.4 volts?  For what voltage is the motor rated?  That would account for the very high RPM and extra load on the motor.  Wiring them in parallel might be the solution.
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CaptTex

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Re: Linda Carol Moran build
« Reply #88 on: August 19, 2015, 03:58:15 PM »

Only one battery is powering the motor, the motor is actually bigger than the propeller though thats what surprises me! The motor originally was powered by the 7.4v lipo battery that came  with it from the factory so I would assume its rated for 7.4v and I think its even stamped on it, I know it sounds crazy but i read on here somewhere the motor and the propeller diameter must be the same if not the propeller smaller.


Tex
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escipion

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Re: Linda Carol Moran build
« Reply #89 on: August 19, 2015, 04:51:46 PM »

Hi Tex!!!
That happens when the motor have to work with too much load, not necessarily the propeller load, could be that something else, like a bad alignment of the motor, but you solved it with the dog bone, another thing could be the shaft or the tube that contains the shaft is not straight.

My advise, remove the coupling system and turn the propeller with your fingers, if it moves easily, then install the coupling sockets and check that they are not grazing against anything, then install the hole coupling system ant turn again the propeller with your fingers to notice if there is not too much difference in load with the hole system assembled compared with only the shaft and the propeller

Best regards
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CaptTex

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Re: Linda Carol Moran build
« Reply #90 on: August 19, 2015, 04:54:05 PM »

The shaft is greased fully and turns easy, believe it or not that was the first thing I checked. Am I correct on the two leads indicating a brushed motor? I'll double check when I get home, what did you power your carol with?




Tex
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escipion

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Re: Linda Carol Moran build
« Reply #91 on: August 19, 2015, 05:05:13 PM »

Hi Tex!!!
I powered my carol  with a 4.8V Dumas motor, a silicone fuel tube as a couple, and two 4.8 batteries, one for the motor and the other for the receiver, didn't change the propeller, installed the plastic one who came with the kit

Sorry, don't have photos of the propellers site alone

Hope you fix the problem


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escipion

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Re: Linda Carol Moran build
« Reply #92 on: August 19, 2015, 05:09:30 PM »

I'm not an expert as other guys in the forum, but as I see, yes, your motor is brushed
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CaptTex

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Re: Linda Carol Moran build
« Reply #93 on: August 19, 2015, 05:46:03 PM »

Beautiful boat escipion, I'm not sure what the problem could be then! Maybe it just runs hot naturally, as stupid as that sounds but I am not willing to risk burning her down or causing toxic materials to be in a pond if she burns, the quest for answers continues!




Tex
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CaptTex

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Re: Linda Carol Moran build
« Reply #94 on: August 19, 2015, 05:50:11 PM »

By the way I'm not sure if this is helpful or not, but the receiver controlled switch is of course naturally hooked up with neg and pos to the lights but in order for the switch to work you have to have a common ground and run a secondary neg wire to any neg leg on the receiver, I'm positive this isnt over charging anything because there isnt another pos going to the main propulsion circuit.


Tex
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CGAux26

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Re: Linda Carol Moran build
« Reply #95 on: August 19, 2015, 06:25:55 PM »

I think you may have your switch wired wrong.  A switch goes in the positive wire, and is there to interrupt or allow the flow of positive electricity.  The Turnigy switch has 2 red wires on one end, that connect between the positive feed from the battery to the plus side of the lights (or in my boat to the smoke generator.  The wires on the other end of the switch go to the receiver, so the TX can control the switch. 


The switch is at left in the picture.
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CaptTex

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Re: Linda Carol Moran build
« Reply #96 on: August 19, 2015, 06:29:57 PM »

I tried just wiring in neg and positive on the switch Dave, but no luck it wouldn't power up....so I found a instructional video that said add the ground to the neg pole on the receiver. The extra neg or "ground" as the instructional video showed, comes off the negative of the battery, this is set up this way because I'm using 2 batteries, unless im doing this wrong. the video is on Youtube, if you wanna take a look Dave.




Tex
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CGAux26

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Re: Linda Carol Moran build
« Reply #97 on: August 20, 2015, 02:01:43 AM »

BigTex, now that you have built the baby, it's time to build the grand daddy.


http://www.dumasproducts.com/product_info.php?products_id=1211


Oh, and get ready to upgrade to a Suburban to haul it in.  Maroon, of course.   :-))
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CaptTex

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Re: Linda Carol Moran build
« Reply #98 on: August 20, 2015, 02:20:25 AM »

Took a few pics for you fine folks, managed to keep her cool long enough to snap a few! Enjoy  :}  Dave I'll be calling you tommorow to chat about the issue, I've been spending time with the ol ball and chain today which is why I've been away from my email! I actually saw that model but I'll be buying their discounted shelley foss and turning it into a free lance tractor tug, probably for Moran Towing  %)


Tex
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CaptTex

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Re: Linda Carol Moran build
« Reply #99 on: August 23, 2015, 07:24:13 AM »

Lights on the water, I think the motor is shot boys and girls.....time to go shopping!




Tex
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