[TowerTalk] FW: Fwd: Worm Gears

[Matt]

???  Please explain.

KM5VI

-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of Hans
Hammarquist via TowerTalk
Sent: Tuesday, July 14, 2015 4:25 PM
To: towertalk at contesting.com
Subject: [TowerTalk] Fwd: Worm Gears

Any gear with a 50% or better efficiency is NOT self breaking and will
require a break. Even a slightly lower than 50% might (most possible) need a
break as the efficiency will increase with time as the gear will "wear in".


Hans - N2JFS



-----Original Message-----
From: Wilson <infomet at embarqmail.com>
To: John Santillo N2HMM <n2hmm at warwick.net>
Cc: towertalk <towertalk at contesting.com>
Sent: Tue, Jul 14, 2015 1:37 pm
Subject: Re: [TowerTalk] Worm Gears


Hub City touts their helical gear units, at 90+% efficiency vs 60% for
worms.
I
don't know about their resistance to back driving, but at 50-60:1, it
wouldn't take much of a brake...
WL




 
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