Spoilers On Radian - Page 2 - RCCanada - Canada Radio Controlled Hobby Forum
RCCanada - Canada's Radio Control Hobby Forum
Sailplanes / Electro-gliders Discuss quiet flight in Canada.

Thread Tools Display Modes
Old 05-24-2011, 08:59 PM   #11
RCC Junior Contributor
I am: Lorne C
Join Date: Oct 2010
Location: Ontario
Radio of choice:
# of RCs: 50+

Feedback: 8 / 100%
Posts: 141
Total Props: 3
Re: Spoilers On Radian

       Remove this ad - become a site supporter!
The Radian's biggesst negative is that it thermals so well, it's easy to have it sucked up and out of sight in a matter of seconds. Spoiler should work well on almost any glider airfiol ...thus I suspect you did one or more of the following that might negatively affect both spoiler up and spoiler retracted performance.

1) As mentioned before, installed too close to the root, disrupting the air over the tail and making the elevator less effective.

2) Too much weight. Wing loading on the Radian is already high for a 2 meter ship. That said, it thermals incredibly well ...a 7-9g servo and very light spoilers should not hurt the perfomance too much. (I carried around a 76 gm video camera and it still flew well). And if you are really worried about the weight, just use a slightly lighter battery to make up the difference. Did you use a heavy servo ... installed away from the CG?

3) Centre of Gravity altered. If you've moved the centre of gravity too much, it will certainly affect performance. Servo should be as close to the orignal CG as possible. Outboard micro servos might also work well.

4) One wing weighs more than the other. Too much epoxy or non-symetrical building could cause one wing to weigh more ...check that also.

...what I'm trying to say is ....don't give up! A set of wings for the Radian is cheap.
lornecherry is offline   Quick reply to this message.

Sponsored Links - Subscribe to remove this ad.
Old 05-25-2011, 06:51 AM   #12
RCC Junior Contributor
I am: Al O
Join Date: Feb 2003
Location: Northern Ontario

Feedback: 1 / 100%
Posts: 190
Total Props: 0
Re: Spoilers On Radian

Thanks for all the info, but I'm just going to leave them in the basement. Now that I am making my aprouch from the south under the Hydro wires and above the fence I don't need them. Once I'm past them I just turn into the breeze and land. If no breeze I turn and land at my feet, no walking. Thanks again, and if anyone puts a set on let me know how they work. Al
copilot is offline   Quick reply to this message.

Quick Reply

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:
Please enter a password for your user account. Note that passwords are case-sensitive.
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.
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?


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

Similar Threads
Thread Thread Starter Forum Replies Last Post
YaHoo, Spoilers installed. copilot Sailplanes / Electro-gliders 12 03-10-2011 07:08 AM
Spoilers copilot Sailplanes / Electro-gliders 3 08-30-2010 03:53 PM
Adding Spoilers Patchman61 Sailplanes / Electro-gliders 4 03-30-2009 08:14 PM
Flaps or spoilers? wollins General RC Aircraft Discussion 2 05-23-2007 10:17 AM
Flaps and Spoilers Chris Cann Fixed Wing 2 03-26-2004 07:07 AM

All times are GMT -5. The time now is 03:33 PM.

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