RC Groups

RC Groups
    Micro and Sub-Micro Boats
        Help! mini prop n driveshaft please help?

#1 lacey Dec 03, 2012 01:25 PM

mini prop n driveshaft please help?
hi guys, am building mini boat using the motor in link and am wondering where to buy prop n driveshaft for it and a coupler of somesort? thanks :)

#2 boredom.is.me Dec 03, 2012 01:52 PM

I got your PM.

#3 FlyingNiko Dec 07, 2012 11:38 AM

When you have an answer... please post as I am interested too. :-)

#4 boredom.is.me Dec 07, 2012 11:52 AM

It depends on the size and type of boat really. I'm going to start a setup thread.

#5 FlyingNiko Dec 07, 2012 12:08 PM

I was wondering if there are definitions of micro and sub-micro. Mini for example is <17.7inch (=450mm). What is considered micro subsequently sub-micro? It would be nice if there were some drives available for these two classes... I hope there is.

#6 boredom.is.me Dec 07, 2012 12:13 PM


The size thing is an on going debate that will never end. As technology goes on, small becomes large and so on. When I suggested the forum, I was going to set the limit to 12" I believe, but 15" would get more people interested. That can be hull length or total length, which is yet another point. Now there is scale applications. That's a different thing though.

#7 FlyingNiko Dec 07, 2012 12:19 PM

mini - 17.7inch hull length (450mm) max
micro 13.7inch hull length (350mm) max
sub-micro 9.8inch hull length (250mm) max
Would this be fine as working hypothesis?

#8 boredom.is.me Dec 07, 2012 12:27 PM

No, because that is your hypothesis. Not everyone will agree on it. For example. I think a sub-micro features a 5" (125mm) hull or less and a micro has a 10" (250mm) hull or less. I respect everyone else's opinion as I am sure most do, but we will still have our own opinion. And the keyword there is "opinion" which is pretty much worthless till official classes are established. We can't establish official classes with such a lower number of participants.

#9 FlyingNiko Dec 07, 2012 12:31 PM

Wow! 5'' is really small, and so is actually 10''. The smallest build of my hands is currently 17.7inch.

I think the number of participants will increase when there are international competitions, consensus on class-size and LiPo weight-limits, and last but not least readily available drive-lines, props and motorcouplers. What about spare-parts of mini-z boats or micro boats of other commercially interested enterprises?

#10 Old Wood Boats Feb 12, 2013 09:02 AM

Lacy try a piece of silicone tubing for a flex connector, and a small 1/16th drive shaft.
try Don at Lyola Hanna Dock yard,,

#11 Harquebus Feb 15, 2013 04:51 PM

^ Yeah, what he said. Use K&S Brass tubing for the stuffing box for the shaft to ride in.

Some have even used the plastic handle of a cotton swab (Q-Tip) as a low cost stuffing box (they are hollow). I think a 1/16" shaft fits nicely.

#12 lacey Feb 16, 2013 05:24 PM

ok thanks will try that :) any ideas for a prop think 16mm so i can get shaft to siut it? :)

#13 boredom.is.me Feb 18, 2013 01:15 AM

PM sent

All times are GMT -5. The time now is 08:22 PM.