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Old 07-25-2005, 01:01 PM   #8191
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Quote:
Originally Posted by Greenbox
Magnesium is the lightest of all structural metals, aluminum being 1.5 times heavier and steel being 4 times heavier.

i found out that it is used as an alloy in aluminum so it should have the same properties.. Its mostly corrosion resistant but u can anodize it for more resistance...Seems i have found my material
LOL, yeah its good stuff. I attribute that bit of knowledge to watching f1 racing , looking for lightweight rims and parts for my 1:1 car and of course...I just had to find out what would rock. You can buy magnesium rims for your cars though...its just very exspensive.

If you are about to get one done and get everything together or your going to order some sheets of magnesium. Let me know I might try it out with you.

Basically if you can just mock the super chassis with the magnesium. That would be sweet. That and maybe have him etch in hpi r40 real small into the chassis bottom as well. That would just set it over the top!
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Old 07-25-2005, 01:24 PM   #8192
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Quote:
Originally Posted by ontheroad
STRENGTH Excellent strength and stiffness per unit weight.

You mean specific strength by this describtion and the aluminyum is material that has the greatest specific strength. Besides, it costs very much.

PS: I study mechanical engineering

It is written on towerhobbies website, r40 gets 1750 gr rtr, is'nt it correct? And what about pulling up the carrying part, i weight the rs 43's carrying part and it gets about 10-15 grams. So, what is the weight of standart version of this car with 65 gr aaa battery pack? I think 1750 is best

You'll find the R40 RTR (stock US version) to come in at 1900 +/- 20 grams. Electronics and engine and painted body. I know mine was 1890g stock.
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Old 07-25-2005, 01:27 PM   #8193
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Originally Posted by Artificial-I
...Also where can you find mikes setup?
I got it from the Mugen Seiki website last year. I checked earlier today and they have purged most of his set-up sheets from there and the Mugenracing.com websites.
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Old 07-25-2005, 01:45 PM   #8194
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Hımm.

Tower makes some mistake if you say like that.

So 1900-50(aaa battery pack)-10(carrying part)-10(servo protector) = 1830

Of course it is dependent on the servo,receiver brand and model and other.
Let us see the Hara version and its price.
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Old 07-25-2005, 02:01 PM   #8195
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I would never really trust a website for weight. Maybe the manufacturer but most all shops have the weights incorrectly listed.
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Old 07-25-2005, 02:41 PM   #8196
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Quote:
Originally Posted by ontheroad
Hımm.

Tower makes some mistake if you say like that.

So 1900-50(aaa battery pack)-10(carrying part)-10(servo protector) = 1830

Of course it is dependent on the servo,receiver brand and model and other.
Let us see the Hara version and its price.
You lost me here... I guess you are trying to see how Tower came up with their weight?

Painted bodies weight ~ 110 grams so if you take Towers listed weight and add 110 grams you get about 1860 grams which is within reason.

Most of us post race-ready weight and this includes a painted body of course.

Last edited by JAG Racing; 07-25-2005 at 03:06 PM.
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Old 07-25-2005, 04:45 PM   #8197
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Default Magnesium Chassis

Just a quick note that i don't know if you have considered, years ago they ran magnesium wheels which is where the name Mag wheel came from, the problem with these is that Magnesium is flammable in it's pure form and when these wheels experienced a blow out they would spark on the road and catch fire. Now they mix an alloy of Magnesium and Aluminium to retain the light weight properties but eliminate the flamability. If you are going to buy Magnesium sheet make sure it is an alloy and not pure.
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Old 07-25-2005, 05:15 PM   #8198
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Quote:
Originally Posted by Speedbug
Just a quick note that i don't know if you have considered, years ago they ran magnesium wheels which is where the name Mag wheel came from, the problem with these is that Magnesium is flammable in it's pure form and when these wheels experienced a blow out they would spark on the road and catch fire. Now they mix an alloy of Magnesium and Aluminium to retain the light weight properties but eliminate the flamability. If you are going to buy Magnesium sheet make sure it is an alloy and not pure.
Would anodizing fix this? Also not sure if they will really get bad to where they would catch fire....generally a car driving on its rim is some serious friction/heat.

But hay I wouldnt mind seeing my chassis catch flame. I say stick with it. If anything Ill bring the car over to me during a race and put it out....the cool factor of exstinguishing your lightweight magnesium chassis outweighs the loss of time. LOL, im not joking.
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Old 07-25-2005, 05:58 PM   #8199
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Totally agree that this would be pretty cool, and also to be the first to have a car burst into flame would be considered a legend within the RC world.
I am looking at going down the composite path myself with CF. Just doing some research at the moment, apparently there is a new matting available that is a weave of CF and fine Aluminium strands. Claim to be a similar weight to straight CF but much higher torsional strength. I have already tried CF and Kevlar but there is way too much torsional flex and needs aluminium bracing which defeats the purpose. Straight CF is much better, and CF laid at different angles is even better again. I'll keep you posted with progress.
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Old 07-25-2005, 06:03 PM   #8200
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Some body on ebay is selling grafite chassis's for the ntc3.
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Old 07-25-2005, 06:24 PM   #8201
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Don't know about anyone else but I personally havn't had a real good experience with graphite parts and nitro cars. Granted the parts i experimented with were suspension arms and not a full chassis. Graphite just seems too be a little bit too brittle, very lite and very stiff which is good for electric, but put a bit of weight and momentum behind it and they don't seem to last real long.
I guess they would be ok if you could race and never hit anything! LOL
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Old 07-26-2005, 03:04 AM   #8202
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Hello can anyone please tell me the benifits/disadvantages of the lower suspention mounts pointing up or down?
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Old 07-26-2005, 10:46 AM   #8203
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Does anybody know when the R-40 2005 kit is coming to stores?

rcmart still has the 2004 edition, but I have that one...
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Old 07-26-2005, 11:12 AM   #8204
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Next month the hara version should be out so either way probably by next month youll either be able to get the 2005 or hara.

That is if HPI sticks to the schedule they told me and it seems to have stuck by that. We should start hearing about the hara version soon.

Im guessing you can email these companies in asia and ask them if the 2005 is available. Im thinking we havent found a website that has included it into their inventory.
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Old 07-26-2005, 11:14 AM   #8205
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Quote:
Originally Posted by Artificial-I
Next month the hara version should be out so either way probably by next month youll either be able to get the 2005 or hara.

That is if HPI sticks to the schedule they told me and it seems to have stuck by that. We should start hearing about the hara version soon.

Im guessing you can email these companies in asia and ask them if the 2005 is available. Im thinking we havent found a website that has included it into their inventory.
Thanks for the imput, I'll email rcmart to see when they will have it...
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