X-Pert - plan thumbnail image

X-Pert - completed model photo more pics (3)

by Herm Stroup
from RCMplans (ref:396)
May 1969 
54in span
Tags: IC R/C LowWing
all formers complete :)
got article :)

Submitted to Outerzone: 21/04/2016
Outerzone planID: oz7662 | Filesize: 560KB | Format: • PDFbitmap | Credit*: JohnPapandreou


About this Plan

RCM X-Pert - Radio control pattern model. For .40 power and 4 channel radio. Uses a foam wing.

Quote: "The third and final construction phase of the RCM Flight Training Course presents the logical conclusion to the series - the competition aircraft. By HL Stroup ...with a mild .35 engine it becomes a very well behaved pussycat performing class A and B maneouvers easily and smoothly. For the brute power maneouvers in the Class C pattern it needs a .40"

Direct submission to Outerzone.

Update 02/05/2016: article pages, text & pics added, thanks to RFJ.

Supplementary files

Article pages, text & pics.


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User comments

This model is a good example of a fine design ruined by "progress". Back in the day, I cut a lot of foam wings for all kinds of models. Foam of the type we used was cheap and available, but it ain't the same anymore. All that's available in my area is the "recycled" stuff, unsuitable for aircraft use. It seems all the foam producers have found that they can empty their foam scraps, up to 15 % of volume, into the next vat of new foam and it still retains its insulation value. It's a great deal for them, no waste at all, but for us it's bad news. The foam scraps produce hard places in the foam, ruining the smooth path of hot wire cutters. It just doesn't work. An extensive search of all local foam suppliers failed to find "virgin" foam available. We were able to locate expensive virgin material about a hundred miles away if we met a minimum order of $250.00 and drove a truck to get it. Shipping costs were so high as to make the whole idea uneconomical. A minimum order would completely fill my truck, not enough room at home to store it. That's not all, nice A-grain balsa suitable for wing sheeting ain't easy to find these days. Hobby shops aren't carrying much balsa anyway so you need to order anything more than a couple of sheets, and they won't pick it for you. So for me, I might as well retire my foam cutter and re-design my wings to use balsa construction. I hate ARFs, that's why I love Outerzone, still some builders in the hobby....
DougSmith - 02/05/2016
Thanks Doug, this is really interesting. Does everyone have this problem getting hold of suitable materials these days?
Mary - 02/05/2016
Attached is a photo of the X-PERT made from the plan found on your website [more pics 005]. For anyone who is interested, the engine is a MVVS 40.
BobCherry - 12/10/2017
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