Okay guys here is a servo that will make your crawler look like a window wiper if functioned while your tire is jammed in a rut...read on.
HITEC HS-795OTHHitec's strongest servo period, the "Ultra Torque" HS-7950TH is designed to operate on a two cell LiPo Pack. Featuring our high resolution "G2" second generation programmable digital circuit and our indestructible Titanium gears, The HS-7950TH has the performance and durability you've come to expect from a Hitec servo. Other features in the HS-7050TH include a 7.4v optimized coreless motor, integrated heat sink case, and a top case with two hardened steel gear pins supported by axial brass bushing.
The HS-7950TG has been designed for the most demanding hobby applications including the largest aircraft and monster trucks. Featuring a titanic 403/486oz./in. of torque at 6.0/7.4 volts , while still maintaining a respectable 0.15 second transit time
Due June 2009
Detailed Specifications Motor Type: Coreless
Bearing Type: Dual BB
Speed: 0.15 / 0.13 sec @ 60 deg.
English Metric
Torque: 403 / 486 oz./in. (6.0v/7.4v)
Detailed Feature Descriptions
G2 Digital Circuit
Titanium Gear Train (MK first gear)
Ultra Performance Coreless Motor
Heatsink Case
(8) O-Rings for Water/Dust/Fuel protection
Dual Ball Bearing Supported Output Shaft
Programable Features Include:
Dead Band Width
Direction of Rotation
Speed of Rotation (slower)
End Points
Neutral Points
Fail Safe On/Off
Fail Safe Point
Resolution* (default is high resolution)
Overload Protection* (default is off)
read more here www.hitecrcd.com