BAD : Another gearing dead !

[Popop]

Hi all

My Kyosho 0.8mm gears wear one after the other ...
In such a limited module, what material do you recommend in order to bear some 12cells power ?

Hard steel ?
Brass ?

Thanks

[bomb-proof]

what vehicle? What kind of spur?

[Popop]

See the following still :
http://rcsaga2.free.fr/041R%20640.jpg

We're not talking about 48DP ... but true 0.8mm
As you can see, the failure cause is this time some sand that went inside the casing ... Usually, it's a teeth failure

[bomb-proof]

thats what sand does......thats the only problem. Keep it clean and it will last.

[DualBL]

Popop!!!
what car is that!!?
I have one of those, but it's missing a few parts (one of which is the gear that you demolished)
I brought it to a hobby shop, and they said it was either early Traxxas or Kyosho, because they both used similar parts. it didn't have steering arms, so I took the steering assembly off of my rustler, and put it in it, and it was a perfect fit.
thanks
-Nick

[Popop]

The car (Brute Willys) is part of my Kyosho Outrage based projects :
Google refers the car (try name) and the projects ring pretty well
http://www.google.com/search?hl=en&lr=&ie=UTF-8&q=rcsaga+ultima&btnG=Search

The Brute Willys is now part of my top3 refered projects : E-Ven, Gancia dei Gancia .. and it
Anyway, as a soap-box buggy for real, chances are it will never reach the popularity of the 2 first ...

__________________________

This is another example of failure (on the E-Ven) :A teeth broke under load (grass + 80kph gear ratio) and lathed the whole spur gear
http://rcsaga.free.fr/Cars/Even/02Dec/broken%20gear%20640.jpg

The counterpart on those insane models is that I clearly never fear about frying the cells, the motor or even the ESC ... And it's the same today !


-> Back to the thread, what material do you recommend ?
(The gearing will be sealed with silicon next time)

[robnjr]

Looks about identical to the old (''87) Ultima power train. I still have one.

[Popop]

Ultima II and next ultima based racers differed with smaller pitch primary gearing ... The rest stayed identical (0.8mm)

All sport 2WD off-roaders till 1996... used the exact Ultima tranny : Ultima STs, Trackers, Outrages, Golf, and many more ...

Email me if you find some hard-metal gears for this tranny
Thanks

[glassdoctor]

Popop, I have never seen all-metal cluster gears for the Ultima trans, but I used to run an Ultima with the Thorpe brand gears. They were metal on the smaller half of the gear and a tough white plastic on the "spur" side, if that makes sense. I also ran the Thorpe ball diff of the same material. That car ran the hottest mod motors back in the day and never chewed the gears.

Those stock gears are crap... as you know.

Unfortunately I don't have my Ultima anymore. But I have seen Thorpe gear sets on ebay before. I would check there on a regular basis...

[Combatcm]

I had an outrage a while ago and I hated that stupid middle gear. I also hated the pitch of the gears also, nonstandard, they are a bigger.