706 Astro Marine Gear Box

706 Astro Marine Gear Box

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Out of stock



706 Marine Gear box 3.3 to 1 ratio for marine 25 and 40 motors

Designed for Cobalt 25 and 40 Motors
Reduction Ratio3.3 to 1
Output Gear 59 tooth
Pinion Gear 19 tooth
Motor shaft 1/4 inch diameter
Prop Shaft3/16 inch diameter steel drive shaft
BearingsBall Bearings
Mounting Screws6/32
Gear Box Weight2.5 ounces
Gear Box length1 inch

Please be sure to lubricate the metal gears before running the

gearbox at high power and after every hour of use. Any light grease will

work fine. We use bike grease or white lithium grease. Make sure there is

proper clearance between the gears. To set the clearance place a narrow

strip of computer paper between the pinion and spur gears, press the gears

together, then tighten the mounting screws. Then turn the shafts to eject the

paper strip and go play!