Push tug - Page 2 - RC Groups
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Jul 07, 2010, 06:01 AM
Registered User
HeavyCruser9's Avatar
G'day Gill,
Those 975 motor's look nice what the spec's on them ie: no poles, size,Price!, etc and where can you get them mate?

Cheers from OZ, Bruce
Last edited by HeavyCruser9; Jul 07, 2010 at 06:03 AM. Reason: added stuff
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Jul 07, 2010, 09:21 AM
GILL RC's Avatar
1st the forward windows are typical on this tug as is the stairs. They also can produce a lowered deck version, but as I was told it is a rare beast. most are sold with the flush deck. Bunks or storage could be installed on ether side of the stairs. The bottom step is just above water line and has a drain. The engine size in this tug was up to the customer and runs from twin 6 cyl. 250 hp to twin 875's
Sorry I listed the wrong number for the motors.
They are 987 Nichibo motors:
18 volt
2.6 amp no load
24,500 rpm @ 18v
7 pole with fan
6mm shaft
51.9mm dia.
69mm can length
102mm o/a length
I will be running these at 6 volts. That will give me 8,166 rpm, I have tried them with the 50mm 5 blade prop. At full speed, under static load (6 volts, prop in water) I had 7,812 rpm and it drew 7.3 amps. The thrust was unreal.
Sorry these motors were samples with in the industry. To buy them they are available in quantities of 1,000 pc.
There are others rated at 12 volts 1@ 13,000 rpm and the 2nd at 3,000 rpm They are the same size and have massive torque.
Shafts arrived yesterday and I hope to install tonight.
Jul 07, 2010, 10:28 AM
Registered User
HeavyCruser9's Avatar
BUGGA !! Oh well I'm thinking of getting a pair of 900's for my 1m big AHST tug (1/72 of course!) or use the pair of geared (5.9:1)pittman's I scored off a mate.

Cheers Bruce
Jul 07, 2010, 10:37 AM
USA'd ex Brit
toesup's Avatar
Originally Posted by Aerominded
Might want to re-think those front windows on the lower cabin... (and stairway from the foredeck to engine room?)
Originally Posted by GILL RC
The bottom step is just above water line and has a drain.
Knowing how push tug's (and Springer's) tend to bury their bow's under the water at anything other than 'slow ahead', having an opening in the fore deck is asking for trouble.
The 'drain' you have, is it overboard?... and a large diameter?
Jul 07, 2010, 10:46 AM
GILL RC's Avatar
I would think so. Heres the spec sheet for this style tug. Right off thier site.

This fully equipped new Truckable Steel Construction Push boat can have an optional cabin with bunk beds, shower, head and sink. She has a 14 foot eye level and two 9 foot Push Knees with Johnson rubber on 1/2 inch plate. work will surpass your expectations.
They are very capable of performing other marine construction of vessels so let us know if you need something else for your fleet including longer work tugs, barges etc.
Price: U.S. $ 320,000.00





Flag US
Navigation Perko Running Lights
Location Arkansas
Class No
Construction Hull - 1/4" A36 Steel
Hull in way of Prop 5/15 A36
Super Structure - 3/16" A36
Shipping Weight 44,500 LBS.

Main Engines TWIN
(Standard) John Deere 6081 @ 330 HP Each New
(Options for Standard) Remanufactured CAT 3126 @ 350 t0 385 HP each)
(Additional Cost Options)
Cummins QSL9 @ 405 HP Each Medium Continuous Duty Detroit 60 Series @ 400 HP Each
Transmission (Standard) Twin Disc. 5075SC @ 2.88:1 or equivalent on request
(Additional Cost Options)
The Larger engines will require different size transmissions Twin Disc. 5095 or ZF 325 with ratios up to 5:1
Propeller Two - 34" 18" Pitch
Shafts 3" Stainless with Cutless Bearings
Helm Manual Hydraulic or Power
Engine Room Stand up/walk around 7' High

Electric 12 Volt System
Winch 2 - Win Tek or BB
Generator No
Fuel Capacity 700 - 850 Gallons

Other Specifications
Deck Anti-Skid
Voids Epoxy painted with 18" access
Rub Rail Schedule 40 Halfpipe
Bulwarks 12" high
Frames 18" spacing
Button Chocks 2
Cabin Size Height: 7'
Width: 6.5'
Length: 7'
Pilot House Size Height: 7'
Width: 4'
Length: 4.5'
Jul 07, 2010, 02:29 PM
Registered User
Originally Posted by GILL RC
1st the forward windows are typical on this tug as is the stairs.
Interesting! for very protected waters only then!
Jul 07, 2010, 05:12 PM
GILL RC's Avatar
The little truckable push tugs are normaly in back bays and rivers.
Jul 07, 2010, 09:48 PM
Registered User
Hey Gill. What esc are you using? Build looks great.
Jul 07, 2010, 09:59 PM
Registered User
Originally Posted by Aerominded
Interesting! for very protected waters only then!
Originally Posted by GILL RC
The little truckable push tugs are normaly in back bays and rivers.
emphasis on very!
Jul 08, 2010, 11:45 AM
GILL RC's Avatar
Well the drive shafts came in yesterday. They are now temp-mounted and run true. The perminate mounting will be when the hull is poly coated. I have also painted and mounted the radio plate. The rudder lay out is finnished. I hope that to night I can start making the rudders and kort nozzels.
I am using 2 PRO-100 POLK ESC's $ 10.00
Rated at 5-9.6 volt 100 amp. DIm: 1x1x5/8 They do have a 10 sec time limit in reverse. if you need more time just go to stop and back down.
I have used these in a number of models. When Polks was closing them out I purchased a couple of boxs of them. There are 15 in a box. Yes I do work for Polks.
Jul 09, 2010, 08:50 AM
GILL RC's Avatar
Drive shafts are mounted, radio tray is painted, rudders are laid out, and rudder servos are mounted. I did another component layout with the batteries.
2 - 6volt 4 ah gel cells 1 for each motor. 2 - 7.2, 2200ma packs in series for 14.4 volts for lighting, sound, and smoke. The 4 inch speaker will be mounted under the front deck, facing up, the bow will be made into a sound chamber for the speaker.
It's a busy week end so no work on any of the models. Saturday the Mt Olive boat show. Sunday one in Philidelphia.
Jul 09, 2010, 12:59 PM
Grumpa Tom
Kmot's Avatar
Very tidy installation, looks great!
Jul 09, 2010, 04:32 PM
Just Limin'
laser110's Avatar
Will we see this one next Sunday at S. Orange?

Jul 09, 2010, 05:13 PM
GILL RC's Avatar
No I won't be there next Sunday. But I will have it at the Mt Olive run. I'll be doing the sanding there. Maybe poly coating it too.
Jul 13, 2010, 02:42 PM
GILL RC's Avatar
I did bring it to the Mt Olive run. Great day, Sat postponed, but Sun was fantastic. The had poly coated the inside the day before. I sanded the conners at the run.

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