Spitfire Mk IX (oz12225)


Spitfire Mk IX (oz12225) by Dave Philpotts 2000 - plan thumbnail

About this Plan

Spitfire Mk IX. Radio control scale model WWII fighter, for electric power. Wingspan 49 in. Scale is 1/9.

This plan is a redrawn version of the Dave Philpott Spitfire Mk IX (oz12210) design. The original plan showed electric power using a geared 600 motor.

This here is a later version, redrawn by Won2Race, posted up on RCGroups in 2010 (see datafile link). This plan includes 2 further sheets, showing (1) full second wing layout and (2) alternative brushless motor installation with 600W outrunner and lipo battery. There are other minor detail changes that show radio installation, retract air tank, etc.

Note this plan is in PDFvector fomat. We have no CAD version [edit: Fixed now. See below]. For the original Dave Philpotts CAD file, see Spitfire Mk IX (oz12210)

Update 29/05/2020: Added zipfile with CAD version of this plan, thanks to Miguel.

Quote: "Good Morning M&S, Please find attached the CAD files for the above. No difficulties were encountered in converting from the the PDF vector file posted, zamzar.com having been used. Formally speaking, to be entirely correct the drawing elements ought to have been segregated by colours, each colour corresponding to a separate layer, and all 5 sheets should be brought together under one single file, internally separated into five printing layouts. However looking out my window I can't see any mob of revolting peasants brandishing pitchforks and torches, so I'll leave the matter be :-) Kind Regards, Miguel"

CAD file

This plan is available for download in CAD format.


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  • Supermarine_Spitfire | help
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    ScaleType: This (oz12225) is a scale plan. Where possible we link scale plans to Wikipedia, using a text string called ScaleType.

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User comments

Hi Steve. This may be excessively picky bit I've looked at the recently posted plans for Dave Philpotts' Spitfire Mk IX. [see also Spitfire Mk IX oz 12210 oz535] I'm a control line flyer and not directly involved in scale and I don't know the detailed rules for scale anywhere, however, there is a small error in the profile on both versions of the plans. The cover over the fuel tank immediately in front of the cockpit is straight in profile and slopes down about 0.5". At 1:9 scale, this is about 0.055" so it is visible. The cowl over the engine then curves up quite quickly and completely flat from F4 to F5 is probably an acceptable variation. It is what I would do - and probably will do - if I ever get to building a semi-scale Spitfire at that sort of size, using a design philosophy like that employed by Noel Stephenson all those years ago.
Geoff - 31/05/2020
Thanks Geoff, here at Oz we just put the plans up as we find them, for the archive. The 'mistakes' are interesting and part of the history. Anyone who wants to make this a truly scale model will have their own very particular opinions about many details :-)
SteveWMD - 31/05/2020
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