new alum gears for emaxx - RC-Monster Forums

squeeforever · 04.16.2006, 04:28 PM

maybe it was a previous version but im pretty sure that i was told one of them had aluminum. i think it was the gen 1.

sjcrss · 04.16.2006, 05:00 PM

as for the Ultramaxxed gear set....gen I's used a teflon hard anadization on them....but once Dan (aka Microwebtech) found out that it didn't provide the protection he wanted and that it just raised up the price hhe went with the plain aluminum....then came the brass idlers....hence Gen II's.....but after I was able to damage a set of gen II's....basiscly the gears started to ramp up were the pins from the shift dog was making contact with the 1st/2nd gears.....so then after I sent my original gen II's into dan and he replaced the gears for me...the gen III design was born and the shift dog pins are slighlty offset more to engage the gears more fully and then he inserted the steel pins into the gears so then you would have the steel to steel contact.......I have yet to switch to my set of gen III's yet....but the RC4WD site gears have a flaw.....the gears are michined too thin between the bearing carrier and the gear itself....of which i foresee the gears failing in the same retrospect as Dans gen II's did with the pin contact.....if this was a way for them to cut corners and reduce weight...then i don't think it was too smart on their part.

sjcrss · 04.16.2006, 05:04 PM

Gen I's were ran with the UE steel idlers...but to much wear was found on the gears...so then the brass ones were intoduced in the Gen II's..and continued onto the Gen III's....

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.