new alum gears for emaxx

[makana59]

Hey guys,
Was looking at this other site (didnt want to put the name cause this is mikes forum) but no need to look for the ultramaxx gears anymore. I dont know if anyone baught these yet or posted it but here it is. http://rc4wd.com/shop/product_info.p...d3385f4e417b38

DOnt know if they are any good just thought for those looking for the ultramaxx but dont want to spend that much. Hey Mike if you dont want this posted sorry about it and delete my post. Grant

[makana59]

if anyone got these... how are they? strong ?

[maxxdude1234]

I think I saw a prototype version of these a while ago. The quality of machining looks pretty good for the price, but unless they're teflon coated I doubt they'll last too long against steel idler gears.

[Serum]

that is the reason why ultramaxx used the brass idlers. At least, i thought they are brass..

[Gustav]

I'm pretty sure my gen3 ultramaxxed idlers are TiNi coated steel.In fact i'm almost certain because in some areas they're steel coloured where it looks like it's worn off(probably just weren't coated properly) even though i bought them new and never ran them.

[Serum]

try sticking a magnet onto them, once you've got them out.

They didn't looked like nitrid coated to me, but i might be wrong.

[squeeforever]

i thought they came with aluminum idlers?

[Serum]

no. my gen III's had no aluminum idlers.

[squeeforever]

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.

[Sylvester]

Squee, i dont know buti dont think any of the GENS had aluminum idlers, they were all the gold ones (brass) Someone correct me if im wrong.

[sjcrss]

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]

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]

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]

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]

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.