Ridge Runt


Ridge Runt - plan thumbnail image

Ridge Runt - completed model photo more pics (8)

Ridge Runt  
by John Lupperger
from Hobby Shack
50in span
Tags: Glider R/C Trainer
all formers complete :)

This plan was found online 11/08/2014 at: http://www.hippocketaeronautics.com/hpa_plans/details.php?image_id=6771
Outerzone planID: oz5771 | Filesize: 493KB | Format: • PDFbitmap | Credit*: danito69


About this Plan

Ridge Runt - Slope aileron trainer. Wingspan 50in, area 275 sq.in, weight 18 to 22 oz.

Quote: - "The Hobby Shack Ridge Runt was designed to be an aileron trainer for the pilot wishing to transition from rudder/elevator floaters. However, the experienced pilot will find it to be agile enough for basic aerobatics, and great fun for sport flying. Due to its simple construction and light weight, the Ridge Runt will fly on any slope in light to moderate winds. Its clean design will also allow it to fly in high wind conditions with the addition of a small amount of ballast. The Ridge Runt can be flown several different ways: it can be flown from the slope, hand launched, high started, or even with a power pod..."

Update 07/08/2016: Re-scaled this plan to correct full size at 50in wingspan, thanks to anon.

Supplementary files

Instructions, thanks to turbojoe who posted the scans up onto RCGroups.


Did we get something wrong with this plan? That happens sometimes. Help us make a correction


User comments

Hi, Steve. Back in 1991, I built a Ridge Runt from the Global kit. It went together quickly and flew reasonably well, not needing much wind to stay up on the slope. As an aileron trainer it's not a bad airplane, but the flat-bottom airfoil really limits rolling maneuvers and I got bored with it pretty quickly. If I were to build another, I would use the E-374 or similar semi-symmetrical section. Thanks for yet another plan from my past!
Moeregaard - 14/08/2014
A great little sloper. I modified mine with the Selig 3021 aerofoil (thickened 10%), lengthened the nose and sheeted the leading edge. Soars well in 5 to 20 knots and is fully aerobatic.
RalphJ - 21/04/2016
Hai Steve, the origional wingspan was 50 inches, not 56. Keep up the good work, outerzone is great!
anon - 07/08/2016
You're right. Thanks. Re-scaling this one now.
SteveWMD - 07/08/2016
Hi Steve, here's a couple of photos [more pics 004, 005] of my new Ridge Runt, 20 odd years after my first one! Ready to fly weight came in at exactly 1lb. Keep up the good work on this magnificent site. Cheers,
MikeJones - 24/04/2017
Hello, I'm sending in some pictures of my modified Ridge Runt. I've started from the Outer Zone plans. I've CNC wire-cut the wings from foam with E374 airfoil at the local Fablab and sheeted them with limewood. Built the fuselage as per plans but put the stab low to avoid the linkage intricacies. It was actually a zero-euros project: all surfaces made from scraps of balsa, cardboard and depron; at the end, I bought only the Oracover film. All the other materials have been scavenged from crashed planes or found somewhere in my workshop. It came a bit on the heavy side, 650g rtf (37 g/dm2), but it slopes briskly and neatly in medium-strong wind; a pleasure to build and to fly. Here's some photos of the building [more pics 006, 007] and of the maiden flight that took place on my favourite Genoa slope [more pics 008, 009]. Thank you for your great work at Outerzone. Ciao from Italy,
RaffaelloB - 04/05/2017
Added new photo of the Ridge Runt, thanks to AndyMac [more pics 010].
Mary - 10/07/2017
Add a comment



* Credit field

The Credit field in the Outerzone database is designed to recognise and credit the hard work done in scanning and digitally cleaning these vintage and old timer model aircraft plans to get them into a usable format. Currently, it is also used to credit people simply for uploading the plan to a forum on the internet. Which is not quite the same thing. This will change soon. Probably.


This model plan (like all plans on Outerzone) is supposedly scaled correctly and supposedly will print out nicely at the right size. But that doesn't always happen. If you are about to start building a model plane using this free plan, you are strongly advised to check the scaling very, very carefully before cutting any balsa wood.


Terms of Use

© Outerzone, 2011-2017.

All content is free to download for personal use.

For non-personal use and/or publication: plans, photos, excerpts, links etc may be used, provided that full and clear credit is given to Outerzone with appropriate and specific direction to the original content i.e. a direct hyperlink back to the Outerzone source page.

Unauthorized use and/or duplication of this material without express and written permission from this site's owner is strictly prohibited. If we discover that content is being stolen, we will consider filing a formal DMCA notice.