Im looking for a realistic bow thruster for my 45" shelly foss. I dont want a poorly designed bow thruster like the graupner unit ( aka a single paddle unit) i would like one that actually uses a propeller.

one of the robbe bow thrusters has props also the marx unit

If you want to see one installed and how it performs, I have the build pictures and videos here:
www.kaymac.ca
cheers
Keith

Where can i purchase the marx bow thruster? I cant seem to find it anywhere.

You can get it here:
http://www.harbormodels.com/site08/m...propulsion.htm
Look down the page and you will find it.
I used a small ESC and it really throws the bow sideways under full throttle. If you watch the video on my website, you can see it swing when the tug makes a u-turn in it's own length at half speed.
Keith.

Great looking tug and features on the tug,I have been thinking of building a tug and was opputting it off but now have a renewed interest.

Thanks. You should try it as it really is a very satisfying build.

Keith.