GEARBOX
AEG’S DRIVING FORCE
BATTERIES
Baz Collins explains how to get the best from powerful LiPo batteries
A
ll AEGs have gearboxes. They
are similar to the gears on a
bike or car, driving a piston
back and forth to push the air
out through the hop and expel
the BB from the barrel. But what if you want
things to go faster?
In the past issues we have discussed the
amazing abilities and potential of using LiPo
(Lithium Polymer) batteries; this time we will
look at the upgrades needed to run the most
powerful of these batteries, the 11.1v LiPo.
As stated before there are more powerful
LiPos than the 11.1v, but this is the main
powerhouse battery used by the speed and
power freaks out there (like me!). So let’s
look at some of the things that will need to
be done.
First off you’ll obviously need a gearbox
to cannibalise, preferably a complete one.
Now in essence all you need to do is make
sure your shimming is spot on (gear heights
are all raised and lowered to the appropriate
levels for the gears to merge correctly), as
well as angle of engagement and shortstroking, and that it’s well greased using a
good quality machine grease (WD40 won’t
work!).
Let’s start angle of engagement (AOE):
this is where you remove teeth from the
rear of the piston (amount can vary) to allow
the sector gear the engage correctly. To
clarify, most guns come with an uncorrected
AOE which can result in stripped pistons
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