Chip Motor Gear

[Robb Gerber]

What type of metal is that 44T 36DP Gear we got?

[Joe Johnson]

The metal of the gear that mates with the Chiaphua gear is
"FX-2008-90HT copper infiltrated steel heat treated to Ra 68"

A friend looked up the spec. It has a Min Ultimate of 90,000psi.

Hope this helps.

Joe J.

[Ed Sparks]

A lot has been said on other posts about the specs for this gear but I cannot find the pressure angle mentioned anywhere for the smaller 32 pitch portion. Past descriptions describe it as a "standard" 32 P gear. Would that be the 20 degree or the 14.5 degree standard. It visually appears to me to be closer to the 14.5 degree involute.

Does anyone know for sure?

[Keithicus]

Ed,

From Update #2:

"The smaller (16 teeth) gear of the cluster pair is a standard 20-degree pressure angle, 32 diametral pitch configuration, and may be mated with other 32 pitch standard gears."

-Keith

[Jordan A.]

while were on the subject my mentors want me to verify that the gear can be run on a shaft without some sort of bearings attached to it.

Is this right? I think I remember hearing someone mention it has brass in it? Or some kind of self lubrication, or alternative.

Not sure really, I dont know much about this.

[Robb Gerber]

Thanks Joe...

and To Jordan,

I'd highly recommend you mount the gear on a shaft that rides on bearings and lubricate the gears

5000 rpm can produce alot of shrapnel

You don't want to picking your grears off the floor

L8TR