Echo-Blower-Boat

I am new to this hobby. I want to build a boat out of an Echo 21.2cc engine off of a PB200 blower. My first boat will just be a rough experiment. I want it to float, accelerate, decelerate, steer and kill on command. As I gain experience I will make a nicer boat. My engine has a theaded 8MM 1.25 pitch shaft that I will need to connect a cable/shaft and propeller to. Can anyone recommend a method of making this connection? Specific parts and web sites would be appreciated. Cable/shaft and prop recommendations appreciated. Information on how to mount the cable/shaft under the boat near the prop would be appreciated. I would also appreciate information on rudder suggestions. Thank you.

tapkoote

You might want to contact Tony at warehouse hobbies
he's great with new comers and started alot of this conversion stuff years ago.
http://www.whhonline.com/
good luck, let us know whats up.
tap

Hydro Junkie

I have to agree, talk to Tony. For other possible options, you can look at the Octura Strudder(?) strut/rudder combo assembly or a Speedmaster strut/stinger and rudder assembly. Aeromarine has some parts as well though not as much for a larger boat that you discribed

Justaddwata

My Feedback: (3)

Tony is certainly a great source.

Another one to try is Aeromarine who make the collets - I imagine they have one for the 8mm shaft (just not standing out on their website) http://www.aeromarinerc.com/

martno1fan

A cmb 90 collet will fit,ive used them before they have an m8 thread.I got mine from Dave here,not sure who sells them over the pond.
Mart

http://www.ebay.co.uk/itm/COUPLING-F...item230d0ab522

Scott Schneider

Yup, the Aeromarine collet Mart states is the one ya need. It will be 3/16" buts thats just fine for that engine and it's HP and torque rating.
Cabling use the 3/16 flex to welded stub type. props will also be 3/16 hub.
If a Mono hull ? ... an Octura X460/3 prop is ideal.

Did TWO monos a few years apart using that exact engine, water cooled the cylinder, made custom mounts, added a CDI chip replacing points etc ....
Do understand ... VIRTUALLY NO PARTS EXIST for that early 1980's vintage engine, don't invest much ... that is Free Wisdom

martno1fan

Or get the 1/4" one from Dave,he will ship overseas and it wouldnt cost much for one collet.
Mart

Scott Schneider

Honestly that engine even modified I doubt made 2 1/2 HP and props that actually were NOT TOO BIG happened to also be 3/16 hub stuff from the .67 / 11 cc nitro engine boats.
1/4 cable is overkill and IMO just more expense without gain

tapkoote

These guys got good info also
dont be discoraged by doubters
http://www.rcairboats.net/phpBB/view...ys=0&start=120
tap