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Author Topic: Brushless Motors in Tugs  (Read 13209 times)

andywright

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Brushless Motors in Tugs
« on: March 07, 2010, 11:30:27 AM »

Any one any ideas on a brushless motor for a model tug, I'm thinking of fitting an inrunner in my Mobile Marine models Nangee, now swinging a 58mm prop in a 60mm Kort nozzle. An inrunner is probably easier to fit in the hull than an outrunner.
Andy
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Fleetcom

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Re: Brushless Motors in Tugs
« Reply #1 on: March 07, 2010, 12:01:41 PM »

As someone who has knowledge of brushless motors in R/C Planes I would say that it would be fine as long as you gear down. Brushless motors tend to run at high revs unsuitable for a large propped tug. What you need with a tug is torque, not revs. http://www.fleetcale.com supply a brushed motor that has high torque, will swing large props and uses very few amps. Pictured below the LP800.

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Martin [Admin]

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Re: Brushless Motors in Tugs
« Reply #2 on: March 07, 2010, 12:20:47 PM »

 
You don't get very good slow rev control with Brushless motors , unless you go the "sensored" route and costs quickly start quadrupling!
    ...... gearboxes are horrible, noisy, inefficient things!



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Fleetcom

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Re: Brushless Motors in Tugs
« Reply #3 on: March 07, 2010, 12:43:19 PM »

this link works a bit better it's the " S " that counts     #

    WHY do you charge to download a catalog ?   I don't get charged for walking in to a model shop or a sweet shop you prob put off 99.8% of people buying off you

http://www.fleetscale.com/

Peter

If 99.8% of people are put off buying from Fleetscale - not true actually - then that would be a travesty just because I charge for a downloadable catalogue. It's not like "walking into a sweetshop or a model shop" because you are getting something in return. You don't have to buy a downloadable catalogue you could buy a hardcopy catalogue that costs about the same to produce as it costs to buy, or do you think printed catalogues should be free too?

The difference is the downloadable catalogue contains extra content and the reason for charging for it is to give me the incentive to add the extra content. I should explain that I am not on the payroll and the catalogue is an enterprise of mine to increase the facilities available. It does not increase my coffers as the charge is low. There are more photographs, reprinted magazine builds and the start of building tips that could be reasonably included in a printed catalogue. Many people all over the world have downloaded the catalogue because it is instantly available. I should also point out that free downloads for new editions are included for 12 months for the modest cost that is charged.

More about motors: http://fleetscale.wordpress.com
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HS93 (RIP)

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Re: Brushless Motors in Tugs
« Reply #4 on: March 07, 2010, 01:07:43 PM »

I went on your site after I go the correct address to look at the price of the motor you had posted , do you think I should have to pay to find out how much it is and the speck of it?  some people just like to view sites, see somethink they like and buy it, they are not going to pay for the privilege.


peter
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Fleetcom

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Re: Brushless Motors in Tugs
« Reply #5 on: March 07, 2010, 01:13:19 PM »

Perhaps you should should have clicked on the unmissable boldly displayed links to our main site http://www.fleetscale.co.uk as many, many people already do where you will find all our products listed and available for purchase.
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Bradley

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Re: Brushless Motors in Tugs
« Reply #6 on: March 07, 2010, 03:05:01 PM »

I have got to say that, having been inspired by this listing, I have had a look at Fleetscale's website and can find nothing wrong with it.  Although I am not (in general) into 'grey funnel line' I found it very informative and you can get full details and prices without any further cost.  :-))
Maybe, as a result of this posting, I will get a good discount from Fleetcom (only joking).   {-) O0 {-) O0

Derek.
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Fleetcom

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Re: Brushless Motors in Tugs
« Reply #7 on: March 07, 2010, 04:31:39 PM »

Thanks Derek I was beginning to think I was in hostile territory like many of the U.S forums. As this is about tugs and towing have a look at this:

http://www.fleetscale.co.uk/pages/hullkits/roysterer/rystr.htm

There is also a liner - Empress of Asia, & coaster - S.S.Moygannon so it's not all grey funnels.
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andywright

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Re: Brushless Motors in Tugs
« Reply #8 on: March 07, 2010, 04:57:17 PM »

Perhaps you should should have clicked on the unmissable boldly displayed links to our main site http://www.fleetscale.co.uk as many, many people already do where you will find all our products listed and available for purchase.

I have to admit, I couldn't see links to a price list on the www.fleetscale.com link you gave me in the original reply, even after a second look, the .co.uk address workd fine though.
Andy
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Fleetcom

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Re: Brushless Motors in Tugs
« Reply #9 on: March 07, 2010, 05:02:56 PM »

I have to admit, I couldn't see links to a price list on the www.fleetscale.com link you gave me in the original reply, even after a second look, the .co.uk address workd fine though.
Andy

The links on the http://www.fleetscale.com site go to the main .co.uk site as I said in previous post on this thread, not a price list. All the products are found on the menu on the left of the main site under "products".
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Adam

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Re: Brushless Motors in Tugs
« Reply #10 on: March 27, 2010, 10:44:26 AM »

This setup is used in two Fairplay ASD tugs



And this is what both motors together  use on "scalespeed" throttle


I am very pleased with this set up, and for my next build I will surely consider brushless motors.
They have a lot of power with very compact dimensions.
If you take a motor with a low KV, gearing down is no problem with timingbelts


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jabba

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Re: Brushless Motors in Tugs
« Reply #11 on: March 27, 2010, 01:33:15 PM »

i have built a wyforce brushless awsome torque i used 600kv outrunners on 2s lipo . here's a link to the
build thread.
 jabba.

http://modeltugforum.com/index.php?topic=2427.0
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toesupwa

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Re: Brushless Motors in Tugs
« Reply #12 on: March 27, 2010, 03:50:22 PM »

This setup is used in two Fairplay ASD tugs

I am very pleased with this set up, and for my next build I will surely consider brushless motors.
They have a lot of power with very compact dimensions.
If you take a motor with a low KV, gearing down is no problem with timingbelts


Interesting looking setup there Adam..

Are those home made drive units?
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Adam

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Re: Brushless Motors in Tugs
« Reply #13 on: March 27, 2010, 04:01:52 PM »

Are those home made drive units?

Yep, all made of brass with 45mm four blade propellers

This is one of the four made units.
We have two Fairplay's under construction, each with two of these units
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Martin [Admin]

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Re: Brushless Motors in Tugs
« Reply #14 on: March 27, 2010, 05:55:58 PM »

i have built a wyforce brushless awsome torque i used 600kv outrunners on 2s lipo . here's a link to the
build thread.
 jabba.

http://modeltugforum.com/index.php?topic=2427.0

Just read your build jabba, excellent, what's the on water report with the brushless motors?
Power?
Noise?
Slow speed control?
What controllers are you using?

 Martin  :-))
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debssnal

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Re: Brushless Motors in Tugs
« Reply #15 on: March 27, 2010, 09:40:43 PM »

Hi Andy,
            the baby's you need for you tug are @ 900w or 1.2HP
 http://www.giantcod.co.uk/xyh4260-500kv-outrunner-p-404601.html
You would run this on 6volts only
Or you could runthis one on 12volt @1400W or 1.8HP
http://www.giantcod.co.uk/xyh5065-270kv-brushless-outrunner-p-404605.html
You would need a 60amp ESC
Hope this is of some help
Alan
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nick_75au

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Re: Brushless Motors in Tugs
« Reply #16 on: March 27, 2010, 09:45:50 PM »

I might be a bit late but inrunners are usually too high Kv for this application, if you can put a vertical bracket and have room for a 40 mm diameter motor this Hobby King
motor will turn a 60 mm prop

http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=6246&Product_Name=hexTronik_DT700_Brushless_Outrunner_700kv

This is what I found

http://www.modelboatmayhem.co.uk/forum/index.php?topic=20084.0

on 6 volts and 55 mm prop turns 2200 RPM

They have a longer but smaller diameter 750 Kv motor that may be a little better

or this one from the UK, same brand of motors as hobby king

http://www.giantcod.co.uk/keda-thumrun-2837-outrunner-brushless-motor-p-403681.html

Nick

Nick
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roycv

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Re: Brushless Motors in Tugs
« Reply #17 on: June 11, 2010, 12:52:38 AM »

Hi all, I am trying to find a fwd / rev brushless esc for around 20.  Any one know where I should try?  I think I have been to most of the Hong Kong sites. 
regards Roy
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HS93 (RIP)

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Re: Brushless Motors in Tugs
« Reply #18 on: June 11, 2010, 01:30:17 AM »

Hi Roy

these are not bad for the price prob just in the price you wanted to pay and yes I have got three of them and as far as speed ctr go they are a reasonable make fully reversing on the stick,also saw someone using them plodding about at the deans show in a BIG life boat and he was also very happy.r2 are ok and fast to deal with


http://www.r2hobbies.com/eng/proddetail.php?prod=rcps81707_30


Peter
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roycv

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Re: Brushless Motors in Tugs
« Reply #19 on: June 11, 2010, 10:29:57 AM »

Hi HS93 thank you very much for the information, I have ordered one!
This was the unit I looked at about a year ago, and then got distracted to something else.  Thanks for the quick response, kind regards Roy
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roycv

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Re: Brushless Motors in Tugs
« Reply #20 on: July 03, 2010, 04:31:46 PM »

Hi HS93 I have just bought a Turborix ESC and can't get it to work.  I tried the instructions several times but all I get is the double bleep and  the motor twitches.
I put the TX lever down connected the battery and waited there was no check for this, then up but nothing happens.  The instructions said I do not need the program card as these are the default conditions.

I am using a RCSmart 2900 inrunner motor.  It works on its forward only ESC but not on the new one.  I have made sure that all batteries are OK.  The BEC works the RX and a servo is operational.
Any ideas?
regards Roy





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roycv

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Re: Brushless Motors in Tugs
« Reply #21 on: July 09, 2010, 02:43:49 PM »

Hi Peter, the good news is that I have got the Turborix to work OK.  However it only works if I use a 27 Mhtz Techniplus Tx.   
If I leave everything the same and swap the Tx to a Futaba one although the other servo works the ESC does nothing.

I was initially working with 40 Mhtz RC and so far none of that seems to be compatible.

Any ideas out there?
regards to all Roy
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HS93 (RIP)

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Re: Brushless Motors in Tugs
« Reply #22 on: July 09, 2010, 03:17:46 PM »

Hi Roy I have run mine with 40 mhz Futaba FF9 and then when I converted it to 2.4ghz no problem, also with a cheap 2.4mhz converted set. I saw a chap using two with his futaba naval thing with twin sticks ( cannot remember the name) PM me an adddress and ill send you one of mine I am not using them at the moment and I have a spare. the only reason I am not using them is that the boat was totally over powered.

you may find that the frame rate is different on the two txs/rx is one an older set ?

Peter
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roycv

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Re: Brushless Motors in Tugs
« Reply #23 on: July 09, 2010, 03:38:24 PM »

Hello Peter, thank you for your very generous offer, I have sent a PM to you, I am on holiday from 12th - 28th July so it may go quiet for a while while I check out the 2009 Bordeaux vintage.  I have had some already and it is very good.
kind regards Roy
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roycv

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Re: Brushless Motors in Tugs
« Reply #24 on: July 09, 2010, 04:07:22 PM »

Hi all, just to clarify my last post, It's just me going on holiday, as we have 2 new kittens, when I get back my wife goes on her peregrinations and it is my turn to kitten sit.

regards Roy
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