new alum gears for emaxx - RC-Monster Forums

Gustav · 05:39 PM

So they are a brass alloy,i've been puzzling about this,i think they must be a brass alloy with a fair bit of Fe content?
They are attracted to my 7xl rotor but the force is much weaker than with steel,the brass rods i have here aren't attracted at all.

I think brass may be too hard anyway for the Rc4wd if they're only 6061,i'd use stock idlers with them unless there are some aluminium ones.

EDit:Ok i found out high strength brass has iron content for strength,just a few % so that explains the weak attraction to the magnet,unless it's an aluminum bronze,that has all sorts of stuff in it.So my brass bars are just copper and zinc i guess.

sjcrss · 05:48 PM

this is the areas that I'm saying are machined to thin....yes it probably saves weight....but I think it's more prone to failure....

Gustav · 04.16.2006, 05:50 PM

Yeah looks like the drive pins (steel?) would eat into those faily quickly in our brushless trucks.Depends what they're made of,'aluminium' is a bit vague.

sjcrss · 06:10 PM

they appear to be just aluminum...but who can tell....I agree with you....with that being so thin...it's prone to failing...here is a little history about how my Ultramaxxed gen II's failed......basicly it was from shifting from 1st to 2nd and back, while under power....and not letting off of the throttle.....this caused the failure in my case.......and that was on gears that had more pin surface contact......and with those appearing to be so thin in that area.....i see a problem ...since alot of the peeps run BL around here.