Clipped wing or full wing - RCCanada - Canada Radio Controlled Hobby Forum
RCCanada - Canada's Radio Control Hobby Forum
Float Planes Discuss float planes here...or any other aircraft that floats.

Reply
 
Thread Tools Display Modes
Old 10-08-2016, 12:01 PM   #1
PCN
RCC Noob
 
I am: Paul N
Join Date: May 2014
Location: London Ont
Radio of choice:
Futaba
# of RCs: 6

Feedback: 0 / 0%
Posts: 12
Total Props: 0
Clipped wing or full wing


       Remove this ad - become a site supporter!
I'am building a Carl Goldberg cub the full wing is 76.5" and the clipped wing is 67.5" I'am going to be using a 70 four stroke. When put on floats which would be the better wing ?
PCN is offline   Quick reply to this message.

Sponsored Links - Subscribe to remove this ad.
Old 10-08-2016, 02:10 PM   #2
Bill 6069
RCC Junior Contributor
 
Bill 6069's Avatar
 
I am: Bill M
Join Date: Jul 2009
Location: Niagara Falls

Feedback: 6 / 100%
Posts: 118
Total Props: 1
Re: Clipped wing or full wing

If you plan on flying it off of floats. I would stick with the full span wing (76.5") Not only will it fly a little better it will have a more scale appearance. Clipped wing cubs are essentially never flown from floats.
Bill 6069 is offline   Quick reply to this message.
Old 10-08-2016, 02:27 PM   #3
HAL9KPCM
Level 3 Supporter
★ Site Supporter ★
 
HAL9KPCM's Avatar
 
I am: Dave Z
Join Date: Jul 2012
Location: Regina, Saskatchewan
Radio of choice:
Futaba 18MZ
# of RCs: 6

Feedback: 5 / 100%
Posts: 1,406
Total Props: 17
Re: Clipped wing or full wing

I would think you would want as much lift as possible to break the water tension and added weight of the floats, go full span.
__________________
Two wrongs don't make a right, but two Wrights will make an airplane.

My Heli: Futaba 18MZ 2x(JR GSR260Z Sports FBL, Zenoah G26H, Futaba CGY750 Gyro, Futaba BLS-351 cyclic, BLS-251 tail, Futaba BLS-451 Throttle. Gryphon voltage regulator).
HAL9KPCM is offline   Quick reply to this message.
Old 10-08-2016, 04:25 PM   #4
DO335
RCC Master Contributor
 
DO335's Avatar
 
I am: Cheshire C
Join Date: Jan 2004
Location: Newmarket Ontario

Feedback: 13 / 100%
Posts: 1,328
Total Props: 1
Re: Clipped wing or full wing

Blah, blah, blah.

Speculation and guesses.

Speaking from experience, my choice would be to clip the wing.

You'll still have more than adequate wing, a floater - both on the wing and the water and a much more responsive, nimble plane.

Have had several clipped wings, in various sizes and flown a few full span as well, on water and land.

Clipped the wings on my Sr Telemaster same amount as on a Cub and put it onto floats as well. What an improvement with the shorter wing.

The big deal is to ensure that your float size is adequate in length and for your weight.

You'll also find that a clipped wing Cub flies very well inverted on floats - in fact my Sig 1/4 size did that better than upright. It also did fantastic multiple snap rolls, spins, split s, aileron rolls and scale like or rocket take offs as well.

If you never do any of that stuff and just stooge around, the full span wing will work fine.

Do you want a sports car or a loaded dump truck? The choice is yours.
DO335 is offline   Quick reply to this message.
Old 10-08-2016, 05:49 PM   #5
floyd
RCC Pro Contributor
 
I am: Floyd S
Join Date: Feb 2009
Location: Stayner, Ontario

Feedback: 125 / 100%
Posts: 1,985
Total Props: 5
Re: Clipped wing or full wing

I like clipped wings, they respond better to the controls and the planes fly better. You will get more lift with the full wing but I don't think a Cub really needs more lift. I taught a student on a 60 sized cub that had the full wing and I couldn't land the plane without killing the engine on approach. Even with the idle as low as I could get it. I told the student to build a clipped wing over the winter or he wouldn't be able to land the plane. Cheers Floyd
floyd is offline   Quick reply to this message.
Old 10-09-2016, 09:26 AM   #6
PCN
RCC Noob
 
I am: Paul N
Join Date: May 2014
Location: London Ont
Radio of choice:
Futaba
# of RCs: 6

Feedback: 0 / 0%
Posts: 12
Total Props: 0
Re: Clipped wing or full wing

I don't understand why you couldn't land a full wing cub without killing the engine. A sig LT-40 witch is one of the best trainers around has a wingspand of 70" and a wing area of 900 sg inches.this should make it harder to land the the cub with a full wing of 76.5" and a total wing area of 744 sg inches
PCN is offline   Quick reply to this message.
Old 10-09-2016, 09:40 AM   #7
machzx
Level 3 Supporter
★ Site Supporter ★
 
machzx's Avatar
 
I am: ED E
Join Date: Sep 2012
Location: sutton ont
Radio of choice:
FUTABA 14 MZ
# of RCs: ?

Feedback: 14 / 100%
Posts: 2,132
Total Props: 12
Re: Clipped wing or full wing

go clipped they fly awesome i had one with a 70 surpass II flew great
lots of lift and power
mine was coverd in 21 century fabric too so would be heavy by todays standard
floats are so light
just do a servo for watter rudders in floats easeir to change back and forth
__________________
if I could save time in a bottle
Ed like shiny
blah blah
FUTABA 14MZ /18 mz

MISS YOU SON!
NEVER GOES AWAY
machzx is offline   Quick reply to this message.
Old 10-09-2016, 10:49 AM   #8
floyd
RCC Pro Contributor
 
I am: Floyd S
Join Date: Feb 2009
Location: Stayner, Ontario

Feedback: 125 / 100%
Posts: 1,985
Total Props: 5
Re: Clipped wing or full wing

Quote:
Originally Posted by PCN View Post
I don't understand why you couldn't land a full wing cub without killing the engine. A sig LT-40 witch is one of the best trainers around has a wingspand of 70" and a wing area of 900 sg inches.this should make it harder to land the the cub with a full wing of 76.5" and a total wing area of 744 sg inches
I've had several planes that could fly around at idle speed, and this Cub was one of them. If I had a wind I could land it but on a calm day it just wouldn't slow down enough. We didn't have a 500 foot runway or a 500 foot approach. I'm sure lots of RC pilots have had planes that just want to fly, not land. I had a Great Planes Revolver that needed a long approach on a calm day, it just didn't want to slow down and used the whole runway to land. Cheers Floyd
floyd is offline   Quick reply to this message.
Old 10-09-2016, 11:01 AM   #9
OLD PRAIRIE RED NECK
RCC Supreme Contributor
 
OLD PRAIRIE RED NECK's Avatar
 
I am: MERVIN BURKINSHAW
Join Date: Dec 2010
Location: CORONATION ALBERTA
Radio of choice:
HITEC
# of RCs: 13

Feedback: 8 / 100%
Posts: 3,973
Total Props: 58
Re: Clipped wing or full wing

Quote:
Originally Posted by DO335 View Post
Do you want a sports car or a loaded dump truck? The choice is yours.
I vote for the full wing and fly it like the "dump truck" it is intended to be.

Noting looks stupider in my opinion that a nice scale plane bouncing around the sky like a mosquito on steroids! And with floats on? Give me a break!

Or like a Cadillac on track day at the sports car club...
__________________
Hang time does not apply to ceiling fans, light fixtures, overhead door tracks or basketball nets!
OLD PRAIRIE RED NECK is offline   Quick reply to this message.
Old 10-09-2016, 02:15 PM   #10
Cougar429
Level 3 Supporter
★ Site Supporter ★
 
Cougar429's Avatar
 
I am: Gary L
Join Date: Aug 2008
Location: Tecumseh, Ontario

Feedback: 72 / 100%
Posts: 5,305
Total Props: 30
Re: Clipped wing or full wing

Back on topic, you have more than enough lift margin with even the clipped wing for floats, as long as you keep the weight down. Goldberg kits are very strong as is so real need for beefing up anywhere but at the rear float attach points, (if C/G has not already done that for you).

If you are building this from a kit you also have the option to mod the wing for flaps. That would make up for the loss of lift at slow speeds you would get with shorter span.

One thing to add is that C/G produced a set of "Super Floats" for this one in kit form which also includes a supplemental vertical stab for the back end to compensate for the aerodynamic differences with floats. Regardless of which floats you decide on, that extra fin is mandatory.

ps. If you build floats from a kit I strongly recommend mods so the servo is built in. Saves in scale appearance by not having what can otherwise be an obtrusive rudder linkage.
__________________
I know there's money in aviation........I put it there!
Cougar429 is offline   Quick reply to this message.
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the RCCanada - Canada Radio Controlled Hobby Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

Member names may only be composed of alpha-numeric characters. (A-Z and 0-9)

!!ATTENTION ADVERTISERS!! If you intend on advertising anything on this forum, whatsoever, you are required to first contact us here . Additionally, we do NOT allow BUSINESS NAMES unless you are an Authorized Vendor. If you own a business, and want to do sales on this site via posting or private message, you will need to follow the rules. Shops, Stores, Distributors, Group Buys without being authorized will see your account terminated.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Your Name
Your first name and last initial is required if you plan on using the forum.
Location
Which city & province you live in. This is mandatory for classified listings.
Radio of choice?
Which radio is your current favorite to use?
Number of RC Vehicles?
How many boats, cars, planes do you own?

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
vBulletin Message

Thread Tools
Display Modes

Forum Jump


All times are GMT -5. The time now is 05:10 AM.


vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2016 DragonByte Technologies Ltd.