RC4WD Excavator

[Lil Giants]

Seeings how so many of you would rather speculate than take a chance on trying something new, a couple wks ago I snapped up the last HK hoe presently available.

It arrived Friday in less than perfect condition... it was well package, no structural damage from the trip overseas... it says on rc4wd's site "that product has been tested prior to shipping"... well that's great I guess, except that person responsible forgot to close the vent on the hyd tank ---> model soaked in oil!














Here's a couple of videos I made this morning... listen to how the brushless pump motor sounds & compare that to 850 on my other vids.

In the basement with the lights on http://www.youtube.com/watch?v=N8eyMILf-UU

Outside on the pile http://www.youtube.com/watch?v=T6c2ZIpgOqE


















I've got a few issues to work out, like the hyd pump seems to be straining
awfully hard...

I got it Friday, noticed on the outside of the looked like an oil stain. I'm now
wondering if the brushless motor is somehow affected with possibly being
soaked up with oil? And what pray tell may have the oil contamination done
to the rest of the electronics?

I sent rc4wd a mail about it Friday and pointed out in the videos I sent
today that the brushless motor is not sounding or seemingly operating
properly... guess I'll wait to see what they say.

1st impressions, despite the pump motor trouble; it's a nice sized model
with pretty good ability to move earth effectly. It's right in the middle
between Stahl's 922 & Vario's 850 size wise. Only time will tell of what its durability factor is?

[CustomRCmodels]

Hello Joe ,
Why I am not surprised that you are the first one of us here having one of these , ha .

I haven’t messed with model-hydraulics ( not yet ! ) ,
but that weird loud noise , besides that it seams like that the pump is working hard ,
is probably a result of to much play in the internal components of the motor and pump .
Precision is what costs money , therefore I am assuming they used relative large tolerances in manufacturing of these pumps .
To tide tolerances would make it sees up after a while , to large tolerance just make everything more loose , therefore more noise .
That would be my guess on that .

As for damage via the leaked out oil to the electronics , oil is an electrical insulator ,
therefore I doubt that you did get any damage out of that ,
except of the chemistry of that particular hydraulic oil.
I came across some ball-bearings from China which had a grease-filling which eat up plastic ! You may could see over time that some plastics or rubber get damaged ,
which again I doubt , since hydraulic components hold all kind a seals and such made out of plastics and rubber , would be kind a dumb having a hydraulic-oil with such damaging ingredients ?!

[elliot330]

Originally Posted by Lil Giants

Joe, just how many excavators you got?

I can count 5 in this picture, two more and you'll have one for every day of the week!

I'm only jealous!

Elliot