380 series Feigao observations

[Rex R]

so I got my 12l friday and opened the box...1st thought was awww so cute. well while measuring it I've found that its about 1mm smaller in dia. than a speed 480. also after winding a coolining coil, I've still got the touch. a piece of 3/4" sch 40 pvc pipe makes a nice form to wind the coil on (approx 28" of 5/32" Al tubing). pic shows the almost complete coil(still need to trim the excess off).
mounting screws:
do not assume that both screws are the same length! measure both before attempting to install the motor!

[video200]

how far you can let the screws into the motor before they start to damage the motor ?

[Rex R]

on mine(380 12L) it looks to be 3/16"...however I would advise that one check 1st as this depth varies w/ the number of turns. I clipped the pointy end off a toothpick and gently inserted it untill it bottomed out, then marked the toothpick...being paraniod I checked both holes(turned out to be the same depth) then subtracted a smidge just to be safe.

[video200]

thank you :)
like the idea with the thoothpics. havend thought of that before.

[SJFE]

Rex I have a 380 cooling jacket I no longer need. I bought a set and wrecked one improperly tapping the fitting holes. The remaining one is yours if you want it. Once I unpack the shop I will sent it out to ya.

[Rex R]

I'll keep you in mind if the coil isn't enough . seriously the motor is not going into a race boat. think more along the lines of reef racer I'm shooting for 10-15mph on 7.2v and initial prop is a 427.
steven:
its going into my 'monokote wonder' :-)
if I seem a bit disjointed...it was one of THOSE days at the pond. long about the time the tree took out the powerlines I figured maybe I ought to pack up and give serious thought to going home.

[Rex R]

monokote wonder pic

the monokote wonder

[Steven Vaccaro]

How bis is that again?

[Rex R]

18" long iirc 8.5" beam & heavy as all get out(approx 3lbs w/ batt.s). what can I say...its my 1st rc boat... if I were to build another it would be lighter, it would also have a flex shaft so I could use a proper size motor. as is a 380 size can (dia) is all that fits :-). course it can handle 6-12" waves so I'm not in a big rush to make it uber fast.

[Steven Vaccaro]

What props are you thinking?

[Rex R]

heheh, well I've promoted starting small and working up...that said thought I'd start w/ an x427 and see if things stay cool for a change(the 380 reef racer motor got toasted and the speed480 was getting mighty warm). I have some larger props I can try if they do(430,431,432,531 etc.)

[video200]

rex.
do you think the 380 8L wil handle 3 cell lipo ? i know that it say 8 cells. but i just happens to have a few 11.1 lipo`s laying around.
klaus

[Rex R]

rpm wise it looks safe enough...thats bout all I can say. I would guess that unless it was running a gearbox, finding a small enough prop (for direct drive) might give you a challenge.

[video200]

did a run yesterday with 8cells 4500 mah. and was suprised that the motor was not more then 93,4f after a 5 minute run on my micro drifter with a 28mm prop from hydro & marine (http://www.hydromarine.de/hm_11072.htm) have no idea what the pitch is on those. but i wil test the motor on 11,1 and se. might even try the 25mm they have it it gets hot.

[Rex R]

further observations part 1

well after coping w/ a 'glue' failure(3 yr old), and using a shoehorn... I got the motor installed in the boat. pic shoing boat w/ both hatches open.