WMAC Group build - Impressivo

Just completed both wing structures so have the following recommendation -

Its essential to widen / ease all the gaps in the L/E to allow the ribs to slide fully home using a narrow 1.5mm wide warding file (failing that, double up a couple of the wife's emery boards - unless you have your own !!)
If you don't, the leading edge will move forward and drag the rest of the wing ribs inboard with it. In retrospect i should have eased these gaps a bit more aggressively as this would made the construction easier. (at least iv'e repeated this minor discrepancy on both panels !! )

i also received mine yesterday - thanks Mike. Doubt if I will start before Thursday.

I’ve finished the construction phase of my impressive model, received my electrics so now looking at installing it all.
However, the first thing to strike me is the motor cooling provision in the kit is based on a mega motor using straight thru axial cooling air flow using 4 holes in the front and four holes in the rear.
The TGY motor has a centrifugal cooling fan. Consequently most of the cooling air will exhaust from the rear sides of the motor. Although this motor has some rear cooling holes, I am wondering if this will provide sufficient clear airflow. I suspect most of it will not be expelled efficiently but just circulate around the fuselage.
I don’t have any direct experience on this matter to know if this will cause overheating but to be on the safe side I would like to seek other group builders views on this.

A possible solution would be to install an extra bulkhead to separate the inlet and expelled cooling air, then open up some cooling holes behind this bulkhead. see photos.

My personal view is that cooling will be minimal regardless of mega, turnigy or what have you. I will simply fit my motor and forget about it. Your retro-fit solution might be of benefit and if my motor burns up and dies long before yours I will do something about it when I buy a second motor.

My motor has arrived as well. Think I'll do your mod, Kevin. Are the two extra holes repeated in the bottom, ie one for each motor vent?

Being new to all this electrical stuff, what would you experts do with the motor mounting. 2mm ply seems a bit thin for a horse power. Would an extra sheet of say 16" aly over the rear face help longevity, or maybe another sheet of ply? Should one use thread lock on the screws (not supplied)?

While I'm asking questions, how should we restrain the battery? Would velcro straps be best for holding the batt? I take it a foam bed is not preferred for these hand-warmer power packs.

I am thinking of beefing up the internal floor a bit before cladding the fus. Before anybody says 'owt, my landings were perfect today.

If there are any tips available, they would be appreciated.


Phil

Just been checking Fuz bits, 1/4 sq extremely hard, does not wish to bend to shape. Tried soaking, but not good. Might have to raid scrap box for something more suitable.

Stuart