central mass c/g - RCCanada - Canada Radio Controlled Hobby Forum
RCCanada - Canada's Radio Control Hobby Forum
General RC Aircraft Discussion Discuss anything RC related

Thread Tools Display Modes
Old 05-17-2012, 07:10 PM   #1
try anything
RCC Noob
try anything's Avatar
I am: greg a
Join Date: May 2012
Location: Pubnico N.S
Radio of choice:
# of RCs: 7

Feedback: 0 / 0%
Posts: 21
Total Props: 0
central mass c/g

       Remove this ad - become a site supporter!
I am ballencing my 60" extra 300. I can get the cg right by moving the battery rearwards but my question is , if i move my ignition rearwards i can keep my battery more forward and keep the mass more centralized, is this a benifit or not?
try anything is offline   Quick reply to this message.

Sponsored Links - Subscribe to remove this ad.
Old 05-18-2012, 01:31 PM   #2
RCC Master Contributor
wymbly1971's Avatar
I am: Trevor B
Join Date: Jan 2007
Location: Thunder Bay, Ontario
Radio of choice:
# of RCs: 28?

Feedback: 33 / 100%
Posts: 1,110
Total Props: 4
Re: central mass c/g

Yes, having the mass centralized is a benefit for an aerobatic airplane, racing motorcycle, etc.

The physics is that the centralized mass lowers the "Moment of Inertia". Basically, it means if the masses are all spread out, it takes more force to change its motion.

This effect can be seen by a heavy spinning wheel. A flywheel is meant to be heavy along the rim, so that it will not slow down easily. It also takes more force to start its motion. If the mass was a sphere in the middle with virtually no rim mass, the effect would be negligible.

Realistically, I doubt a few inches and a few ounces in an RC aircraft would make any noticeable difference.
MAAC #77168
Director - Lakehead Aeromodellers

Gravity doesn't Discriminate

Last edited by wymbly1971; 05-18-2012 at 01:37 PM.
wymbly1971 is offline   Quick reply to this message.
Old 05-18-2012, 03:07 PM   #3
try anything
RCC Noob
try anything's Avatar
I am: greg a
Join Date: May 2012
Location: Pubnico N.S
Radio of choice:
# of RCs: 7

Feedback: 0 / 0%
Posts: 21
Total Props: 0
Re: central mass c/g

thanks trevor
I thought because everyone likes larger planes, if i spread out the weight it would react slower and not be so twichy like a small plane. It might just make it sluggish.
try anything 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
Mass Heli Launch - Moncton NB yesterday Tower General RC Heli Discussion 8 01-29-2012 05:39 PM
Jets over Cayley Mass Habu Challenge Pauld Jet Aircraft 61 08-19-2010 07:56 AM
Jet Central Rabbit NEW crhammond FS - Engines 2 07-12-2010 10:40 AM
Mass hover at X-roads effingham aerodreamer 3D - Aerobatics 0 08-08-2006 12:21 PM

All times are GMT -5. The time now is 03:27 PM.

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