Download - British Electric Flight Association

These included metal quick-links with springs to secure them. I found these links
rather tight on the threaded connectors, and had one strip. The landing and
flying wires also use these links which fit into alloy angle brackets, and these
went together quite well. One thing would improve it, a moulded corrugated cover
for the centre section tank.
The electric conversion was not difficult as the deep cowling gave space under the
motor for a battery pack. This cowling is a superb light, fibreglass moulding but
there was no indication as to exactly where or how it should fit. I installed it as far
back as possible using a hardwood block below and an alloy bracket above to take
self-tapping screws. My first choice of motor was an AXi 2820/10 that I had spare,
and it was installed in a simple plywood mount with speed controller behind.
Under it a ply box was fitted tailored to fit a 3s2p 2600 LiPo battery. Access to this
is a removable panel between the undercarriage ()shown below) and the firewall
that has two Balsa rails to stop the cells from moving backwards. Scale air intakes
are used and the floor of the front cockpit was removed to allow the cooling air to
exit. With this layout the CG was too far back, so against my usual principles
lead was added to the battery box.
The motor was pulling 20A on an 11” x 7” propeller so it should fly. However the
first flight showed that more lead was needed. The model showed promise, although
full throttle was required most of the time. In true Tiggy fashion a dive preceded
any attempt at manoeuvres, and flights of six minutes were easily accomplished.
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E.F.-U.K.