[PSUBS-MAILIST] Thruster Quote

[jimtoddpsub at aol.com]

Joe,
It's very surprising that that the Lewmars don't move up to 24v until the 8 hp model which is listed at 12v/24v.  The only things I plan to use 12v for are hotel load and possibly a couple of actuators.  For maneuvering motors I keep coming back to Minnkotas.
Jim


-----Original Message-----
From: Joe Perkel <josephperkel at yahoo.com>
To: personal_submersibles <personal_submersibles at psubs.org>
Sent: Sat, Oct 26, 2013 12:47 pm
Subject: Re: [PSUBS-MAILIST] Thruster Quote




Jim,

I've spotted these and they are very high on my candidate list. The thing that I've noticed is that the ampere usage goes up with the lower input voltages. 24 - 48 vdc is what I'm targeting.

What's bothering me is that I can't seem to match the Lewmars power in a motor/reduction package at 4" (#4 Sch40) diameter without going too high on the input voltages.

A pair of those 185tt thrusters @ 24v with the motors enclosed could go laterally on the stern "Shinkai" style and do the job quite nicely for main propulsion. Probably too much but, more than enough to make headway or hold station in a current.

It's maneuvering thrusters that present the problem. Right now, the Minn Kotas don't look so bad, but I'm going to see what I can do with Hanks motor.

Joe

Sent from Yahoo! Mail for iPad

            
                
                    
                    
                        
                            
                                                            From:                                                        jimtoddpsub at aol.com <jimtoddpsub at aol.com>;                            
                                                            To:                                                         <personal_submersibles at psubs.org>;                                                                                                     
                                                            Subject:                                                        Re: [PSUBS-MAILIST] Thruster Quote                            
                                                            Sent:                                                        Sat, Oct 26, 2013 2:59:41 PM                            
                        
                            
                            
                                
                                    
                                        

Joe,
Here are a couple of websites of vendors which include pricing:
www.westmarine.com 
www.marinedeal.com  The Lewmar I've pasted below is $1239 USD per the site.  It's all electric (not hydraulic), 3 hp, 92 lb thrust.  It's the smallest one they list, and they can get as big and expensive as you want.   
 

 


Model
Hub
Voltage 
Power (hp)
Tunnel Size (in)
Thrust (lbs)
Weight (lbs) 

140TT2.2
Composite
12v
3.0
5 1/2
92
29 


Dimensions


A
B
C
D

4 5/6
9 1/4
5 1/2
2 7/8 

  
 
 



-----Original Message-----
From: Joe Perkel <josephperkel at yahoo.com>
To: Psubbers Mailist <personal_submersibles at psubs.org>
Sent: Sat, Oct 26, 2013 9:24 am
Subject: [PSUBS-MAILIST] Thruster Quote





This early interest of mine in thrusters has to do with sizing of the vehicle; I need to know what is available to me in order to make decision points before I spend the next few hundred hours on a CAD model. Below is a quote I received for an electric thruster 60 - 70 lbs @ 110 - 300vdc, and a hydraulic one 70 lbs @ 2000 psi and 2 gal/min flow rate. It would be rude of me to identify the company, this was my quote, and someone else's may be different.
 
Hydraulic Motor only .16 cu in displacement at 2,420.00 each. 
 
Hydraulic Thruster complete with the above motor at 5,170.00 each.
Thruster complete less motor at USD 2750.00 each.   This include the duct, prop, hardware etc..  Everything less the motor.  An electric or hydraulic motor can be installed onto it.
 
Electric Thrusters range from 9,000.00 to 11,000.00 depending on the voltage requirements, feedback requirements, etc…  I would need more info from you in able to recommend a particular electric thruster to you.  The prices do not include controllers.  Many of our customers use their own or we can recommend one to you.
 
This confirms for me that I am solidly entrenched in the homebuilt thruster design business.
 
Joe






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