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Which weighs more... composite or aluminum?

Which weighs more... composite or aluminum?

Old 07-27-2006, 05:23 PM
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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?
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Old 07-27-2006, 05:47 PM
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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.
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Old 07-27-2006, 06:57 PM
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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
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Old 07-27-2006, 07:03 PM
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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.
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Old 07-27-2006, 07:18 PM
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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.
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Old 07-27-2006, 08:45 PM
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have to agree .... i would stick with composite as much as possible due to the same things pointed out by AdrianM.
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Old 07-27-2006, 10:51 PM
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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.
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Old 07-28-2006, 03:52 PM
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A pound of aluminum weighs way more than a pound of any type of composite
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Old 07-28-2006, 03:57 PM
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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.....
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Old 07-28-2006, 04:00 PM
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Yeah, but dirt and rock are basically the same componets. Plastics and aluminums are quite a bit different.
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Old 07-28-2006, 04:07 PM
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but when you say a pound that means a pound already. no need to measure the weight.lol
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Old 07-28-2006, 04:15 PM
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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..
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Old 07-28-2006, 05:28 PM
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Pinggoy- that was a joke...
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Old 07-28-2006, 05:50 PM
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Originally Posted by Jay Dub
Pinggoy- that was a joke...
You know Jeff I thought it was..
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Old 07-28-2006, 06:16 PM
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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.
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