Captain Bobbie?
 

Hello Guys and Gals,
I am an airplane guy....but I have a few boats...(5 gas...4 electric scale)
This project all started with the wife and I going camping...at a place I could not fly....but could run boats. So we ran boats....the electric scaleish stuff.
An older lady came out and watched and watched...and so I let her run the swordsman around and all was good.
Her husband said "I am buying a boat for her for her birthday!"...we got her a proboat volare...very fast (too fast)...and very pretty (the husband got a little protective of the boat!)
I said to myself I will build her a boat ...and looked around the net for plans...and found push tug plans....scale ones.
Well, after some building here is where I am....It is a 1.5 times push tug....and this is what it looks like. It was expensive...I had to put in a new floor for my wife to get the left over underlayment to build it!....:D The motors were expensive....two 550 motors given to me by a car guy...and a radio put together from parts given to me from the local hobby shop guy (rebuilt the short in the transmitter...fixed a reciever that went underwater in a car?...it works great!)

So I have 6 bucks in it so far (besides the new floor)....

The question is ...will two water cooled 550 motors be "OK" for this project???? They will be water cooled...I am not looking for speed...or pushing power...just a couple of cheap motors to push the tug. Things have to be simple....trying to stay away from gear drives etc...we are talking about a couple of 70 year olds here...think low maintenance...lol..

Thanks for your support...Steve

RE: Captain Bobbie?
 

Nice lil project
What's the lenth of the boat
If it's near 24" the largest prop I would run would be twin 45mm counter rotating,4 blades
Check out www.cornwallmodels.com lowest prices and fast shipping.they have any prop size u can imagine
If it's smaller than 30" I'd recommend one or two intgey lathe motors or rock crawler motors,35-55 turns.my 30" boothbay lobster boat ran a 45 turn direct drive with 1.5 hour run times,boat went 15mph and plenty power and low speed control.motor would be 80 degrees after a long run so water cooling wasn't needed

Your boat can run single screw also
Oh my 45 turn lathe turned a 3 blade 2"(50 mm) prop with no problems

RE: Captain Bobbie?
 

Ok from the looks on the size of the hull you can easily rum 50mm props,4blAdes on 55 turn motors
I recommend for basic control a traxxas evx1 esc for twin motor

RE: Captain Bobbie?
 

Sorry I've been out running boats for the whole weekend...went camping at the lake.

Oh...jeese I forgot to say that it was 26" long...by 10.5" wide...

Oh...wow..you have to think extreme cheap budget...(thinking that I am giving this boat away for free including the radio/motors/everything)..I was considering a couple of high amp microswitches for forward and reverse...it seems to work on the dumas trojan that I have...though docking isn't too scale like when we "blip" it coming in.

I will look at rock crawler motors...anyone ever try electric window motors?...seems like they might fit the budget if the 550's don't cut the mustard...


Steve

RE: Captain Bobbie?
 

Ive never seen a power window motor small enough for a small rc boat
lathe motors run around $14,cheap esc will run $30
the cheap option would be single screw.on lathe motor,6volt lead seal acid battery

RE: Captain Bobbie?
 

Ok...lathe motor...are we talking like a harbor freight special? Hum......where is a good supply?

RE: Captain Bobbie?
 

lol no man a 540 size lathe motor for a com lathe or rc tire truer lathe,there just really high turn motors that produce lots of torque to swing props without the use of reductions.trust me a direct drive 45 turn lathe will be plenty horsepower and rpm for up to a 2" wheel
these motors
http://www3.towerhobbies.com/cgi-bin...SM&C=CKA&V=INT
www.cornwallmodels.com has plenty cheap props and shafts and fast shipping
a boat that size single screw would need a 1.5- 1 3/4" prop,or a 4 blade 40-45mm

RE: Captain Bobbie?
 

Ok...now I know what you mean...I was always wondering what the lathe motors were that everyone was talking about...com lathe motors...thanks for the info!

RE: Captain Bobbie?
 

The window winder motor that I put in my Revell Snowberry was about 540 size, and provided quite indecent performance on 12 volts, but scale plus a bit for luck on 6.  It originated in a small Ford.

RE: Captain Bobbie?
 

The link in Post #7 should be http://www.cornwallmodelboats.co.uk