1/4 scale Cub?? - RC Groups
Shop our Airplanes Products Drone Products Sales
Thread Tools
Oct 18, 2003, 02:32 PM
The Faster the Better
GeeBeeFan's Avatar
Question

1/4 scale Cub??


I'm looking into building a 1/4 scale Piper Super Cub, I have a really good reference...plans to build a full scale version! I would like to build it as authentic as possible but I'm running into a problem. Are there any flat four engines that look authentic and could carry a perfect scale cub? The only scale looking one I've found so far is the OS engine but I dont think its big enough to do the job. Any ideas? Thanks.
Sign up now
to remove ads between posts
Oct 18, 2003, 04:55 PM
Registered User
Mike Smart's Avatar
Do you mean the OS engine is not big enough power wise or big enough physically to scale.
As an example an OS Gemini twin cylinder four stroke will easily fly a 1/4 scale Cub.

Mike
Oct 18, 2003, 11:14 PM
The Faster the Better
GeeBeeFan's Avatar
Okay I dont know what I was smokin earlier! Sorry about that, I guess I just didn't realize the exact size of this cub. Now that I've done a bit of homework, I realize that the OS four cyl. is acctually a bit big! To use the OS engine, accurately; The plane would have to be something like 1/3.85 scale, or maybe it was just a mathematical error on my part. But none the less the OS engine would look decent in the cub. I'm not positive because I can never be sure whos measuring what, where, etc... You know how it goes. So do you think the OS four cylinder has the power to pull a fully detailed 1/4 scale cub? I know its a bit of an opinion question and that I will only truly findout closer to completion.

Thanks.
Oct 19, 2003, 11:09 AM
Registered User
Mike Smart's Avatar
GeeBeeFan,

I don't think you would have any problem at all, unless you are going to build it out of oak
My own plan for a 1/4 scale Cub weighs in at around 12-14lbs and flys realistically on a .91 two stroke or 1.20 four stroke.

Mike
Oct 19, 2003, 11:23 AM
EDF Head
Haldor's Avatar
A friend of mine had a 1/4 Cub (Plain Cub, not the Super) and his flew wonderfully on a OS 1.20 twin old vintage. Power of that one would be equivalent to a new .91 single 4stroke.
Oct 19, 2003, 07:32 PM
The Faster the Better
GeeBeeFan's Avatar
Okay, now that my little mathematical error has been sorted out, I only have one remaining problem....A 1,200 dollar problem! Now I just have to wait for OS to bring their price down a bit. Thanks guys.
Oct 20, 2003, 07:19 AM
Mr Mootsie
Mr Mootsie's Avatar
I have the Sig 1/4 standard Cub with the OS FT160 twin in it. Very dependable engine which looks awesome in the cowl. It is much more engine than the plane requires, but it was well worth the expense.
Oct 20, 2003, 09:42 AM
Registered User
Citrorob's Avatar
The OS engines are beauties but expensive, how about a 2T petrol engine?
Oct 20, 2003, 11:29 AM
Mr Mootsie
Mr Mootsie's Avatar
I've seen Zenoahs in Cubs, but you have to do an awful hack job to get it in the cowl.
Oct 20, 2003, 05:45 PM
The Faster the Better
GeeBeeFan's Avatar
I know there's always a cheaper route. If I'm going to build this thing just like the real thing is built then I've gotta have an accurate, scale engine. Unfortunately, if I'm not mistaken, the OS 4cyl is the only game in town. So if there's a cheaper 4cylinder in the appropriate size range, PLEASE let me know!

Thanks.
Oct 21, 2003, 07:48 AM
Mr Mootsie
Mr Mootsie's Avatar
I believe you are correct. Saito has twins and radials.
Oct 21, 2003, 08:42 AM
EDF Head
Haldor's Avatar
For a 1/4 Super Cub I'd look close on this one : http://horizon.hobbyshopnow.com/prod...prod=SAIE182TD ($670)

A plain 1/4 Cub would be perfect for this :
http://horizon.hobbyshopnow.com/prod...?prod=SAIE100T ($500)

The bigger 4cyl 3.0 OS motor you're powerwise in the 1/3 scale domain ad its way too big for a 1/4 model of this kind.
Oct 21, 2003, 09:55 AM
Registered User
Citrorob's Avatar


This 80cc twin from zenoah should do!

Rob
Oct 21, 2003, 10:04 AM
Registered User
pda4you's Avatar
Yea an 80cc twin on a 1/4 scale cub. A 7.5 lb motor on a 10 lb airframe. Hmmmmmmmmm
Oct 21, 2003, 09:15 PM
The Faster the Better
GeeBeeFan's Avatar
I have no problem up scaling my idea just to go that extra step. I know I'll probably never get around to building this thing but whenever I do get around to it I want the four cylinder! Putting a two cylinder engine in a scale cub is just not something that I dont want to do, my kind of scale is a little different than most people. Thanks for the advice.


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Wanted Want to buy Hangar 9 CUB parts from their ULTRA ARF 1/4 scale CUB paaddiction Aircraft - Fuel - Airplanes (FS/W) 0 Mar 11, 2017 09:40 AM
Wanted 1/4 scale cub or super cub arf chyorn Aircraft - Fuel - Airplanes (FS/W) 0 Jan 28, 2017 11:28 AM
Found H9 1/4 scale cub or super cub arf chyorn Aircraft - Fuel - Airplanes (FS/W) 0 Jan 18, 2017 08:08 PM
For Sale 1/4 scale Piper Cub landing gear and Dubro Cub wheels nero1156 Aircraft - General - Miscellaneous (FS/W) 1 Dec 29, 2016 03:35 PM
Sold Scale Robart 1/4 Scale Cub Landing Gear mesaman4 Aircraft - Fuel - Airplanes (FS/W) 2 May 03, 2016 01:38 PM