R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Electric On-Road

Reply
 
Thread Tools Search this Thread
Old 07-27-2006, 06:23 PM   #1
Tech Regular
 
Join Date: Mar 2006
Location: (@)(@)
Posts: 286
Trader Rating: 5 (100%+)
Default Which weighs more... composite or aluminum?

I assume that a part made of composite weighs less than the same
part made from aluminum. Is that correct?

I know the aluminum part will probably be stronger, but in stock class
racing lighter is definitely better. Is the weight increase worth the strength?
__________________
______________________________________________________
Team Tulsa - Team R/C Paints by Sonny - Durango DEX410
qwkpony is offline   Reply With Quote
Old 07-27-2006, 06:47 PM   #2
Tech Elite
 
Join Date: Jul 2005
Location: Philadelphia, PA
Posts: 3,121
Trader Rating: 32 (100%+)
Send a message via AIM to A. Rhodes
Default

In most cases, it does.

As far as weight increase worth the strength, it depends on the part. On a Xray (your sig) alum parts like caster block and rear hubs are a good choice. On a RDX, arms are a excellent choice . Whenever you change a part to alum., the force in a crash will be transfered to another part of the car, something else to consider when upgrading to alum.
__________________
Retired from RC....
Quantum - St. Croix - Bass Pro Shops - XPS - Rapala
A. Rhodes is offline   Reply With Quote
Old 07-27-2006, 07:57 PM   #3
Tech Fanatic
 
Join Date: Jan 2004
Location: Colorado, Above The Rest
Posts: 992
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by FTNTC3
In most cases, it does.

As far as weight increase worth the strength, it depends on the part. On a Xray (your sig) alum parts like caster block and rear hubs are a good choice. On a RDX, arms are a excellent choice . Whenever you change a part to alum., the force in a crash will be transfered to another part of the car, something else to consider when upgrading to alum.
It just boils down to which part you want to break
__________________
Team BSR
Team Power Push
Protoform Race Bodies
KSKT Racing - #1 in SK Racing Chassis
Darkside Motorsports - "WE ARE WHAT'S NEXT." - www.darksidems.com
THE DARKSIDE is offline   Reply With Quote
Old 07-27-2006, 08:03 PM   #4
Tech Elite
 
vtl1180ny's Avatar
R/C Tech Charter Subscriber
 
Join Date: Sep 2003
Location: Wrong Island
Posts: 4,963
Default

I tend to change out the hardest parts to replace for aluminum and leave the easier parts as composite/plastic. I guess it's like deciding yourself what you want to break in a crash.
__________________
I still lurk....
vtl1180ny is offline   Reply With Quote
Old 07-27-2006, 08:18 PM   #5
Tech Champion
 
AdrianM's Avatar
 
Join Date: Aug 2001
Location: Tampa, FL
Posts: 5,914
Trader Rating: 4 (100%+)
Default

Over all its best to stick with the composite parts for your car. I would rather have a plastic part fail and have to replace it than have an alloy part bend slightly and throw off the handling of my car without my knowledge. Alloy caster blocks (C-hubs) are bad mojo unless they are build really tough...but if they are built tough they are a lot heavier than plastic...so you get in increase in unsprung weight...which throws off the handling of your car.
__________________
Adrian Martinez
What I run: Schumacher Mi5/Associated RC10R5.1/Associated RC12R5.2/Futaba/HobbyWing/Team EA Motorsports/BSR Racing
Where I run: Florida Indoor R/C Complex/Thunder Racing/Florida On Road State Series
AdrianM is offline   Reply With Quote
Old 07-27-2006, 09:45 PM   #6
Tech Champion
 
ROBORAT's Avatar
 
Join Date: Nov 2001
Location: JP Raceway
Posts: 5,360
Trader Rating: 7 (100%+)
Send a message via Yahoo to ROBORAT
Default

have to agree .... i would stick with composite as much as possible due to the same things pointed out by AdrianM.
__________________
[YOKOMO BD7][REEDY RACING][TEAM ORION]
[Sanwa][LRP][Protoform]

http://www.hobbyhaven.com.my/
ROBORAT is offline   Reply With Quote
Old 07-27-2006, 11:51 PM   #7
Tech Master
 
Join Date: Aug 2001
Posts: 1,152
Default

I say use what the car comes with...

Unless its like you're having a plastic motor mount.Then that will be the part that should be change to alu.

RC cars now are very light, so you need to add weights to bring the car to the legal 1.5kg , unless your club doesn't bother about legal weight.
Ben.C is offline   Reply With Quote
Old 07-28-2006, 04:52 PM   #8
Tech Regular
 
Join Date: May 2003
Posts: 400
Default

A pound of aluminum weighs way more than a pound of any type of composite
Jay Dub is offline   Reply With Quote
Old 07-28-2006, 04:57 PM   #9
Tech Fanatic
 
tbeardmore's Avatar
 
Join Date: Oct 2004
Location: aka "Rock Star"...!
Posts: 879
Trader Rating: 3 (100%+)
Default

Quote:
Originally Posted by Jay Dub
A pound of aluminum weighs way more than a pound of any type of composite

HUH??? A POUND OF DIRT IS THE SAME AS A POUND OF ROCK.....
__________________
BMI DB10R, Corally RDX PHi, BMI 12R..!!
Need a "real" car... contact me at:
www.beardmorechevy.com -or- www.beardmoresubaru.com
tbeardmore is offline   Reply With Quote
Old 07-28-2006, 05:00 PM   #10
Tech Regular
 
BeetleBailey's Avatar
 
Join Date: Dec 2005
Location: Harrah Oklahoma
Posts: 343
Default

Yeah, but dirt and rock are basically the same componets. Plastics and aluminums are quite a bit different.
BeetleBailey is offline   Reply With Quote
Old 07-28-2006, 05:07 PM   #11
Tech Master
 
pinggoy's Avatar
 
Join Date: Mar 2006
Location: WBP Florida
Posts: 1,263
Trader Rating: 24 (96%+)
Send a message via Yahoo to pinggoy
Default

but when you say a pound that means a pound already. no need to measure the weight.lol
__________________
TAMIYA TRF415 MRE l NOSRAM SPX l BALLISTIC 17.5
TAMIYA TRF416X
www.noicewatches.bigcartel.com
pinggoy is offline   Reply With Quote
Old 07-28-2006, 05:15 PM   #12
Tech Lord
 
Oasis's Avatar
 
Join Date: Dec 2002
Location: * Sin Cal *
Posts: 10,336
Trader Rating: 36 (100%+)
Default

Quote:
Originally Posted by AdrianM
Over all its best to stick with the composite parts for your car. I would rather have a plastic part fail and have to replace it than have an alloy part bend slightly and throw off the handling of my car without my knowledge. Alloy caster blocks (C-hubs) are bad mojo unless they are build really tough...but if they are built tough they are a lot heavier than plastic...so you get in increase in unsprung weight...which throws off the handling of your car.
True, I had an Aluminum C hub (It was on an Xray I bought) that had been bent but not so much that it looked bent, That car never worked right..until I changed the C hubs..
Oasis is offline   Reply With Quote
Old 07-28-2006, 06:28 PM   #13
Tech Regular
 
Join Date: May 2003
Posts: 400
Default

Pinggoy- that was a joke...
Jay Dub is offline   Reply With Quote
Old 07-28-2006, 06:50 PM   #14
Tech Lord
 
Oasis's Avatar
 
Join Date: Dec 2002
Location: * Sin Cal *
Posts: 10,336
Trader Rating: 36 (100%+)
Default

Quote:
Originally Posted by Jay Dub
Pinggoy- that was a joke...
You know Jeff I thought it was..
Oasis is offline   Reply With Quote
Old 07-28-2006, 07:16 PM   #15
Tech Champion
 
stiltskin's Avatar
 
Join Date: Jun 2005
Location: Virginia Beach
Posts: 5,368
Trader Rating: 102 (100%+)
Default

How much is a "pound" in London?
I usually leave the stock parts on unless I'm having issues with one part in particular. Every time I caught a board with the T2, I would lose a knuckle and it would always take out the c-hub with it. Since buying 2,4,and 6 degree c-hubs in aluminum would get expensive, I bought the aluminum knuckles. Haven't had a problem since. Whenever you "upgrade" to aluminum, you have to watch out for other parts of the car. The energy is going to get transferred somewhere and something is going to give.
__________________
Tony Rumple
Team EAM // Gravity RC
stiltskin is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Whats the benefits and drawbacks of aluminum, Titanium and composite parts? berlincam86 Electric On-Road 7 07-22-2007 08:28 PM
Associated B4 composite chassis tub pirate60 Australia Wanted to Buy 3 06-10-2007 07:13 PM
Composite Outdrives! BuggyKing Electric Off-Road 1 10-31-2006 12:07 AM
B4 composite chassis S.Heath R/C Items: Wanted to Buy 1 08-21-2006 09:34 AM
Anyone know how much the ns15s5 weighs? rcpilot Onroad Nitro Engine Zone 5 02-29-2004 02:37 PM



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 12:16 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net