124 FOREST AND STREAM MARCH, 1920 
AERO POWER ICE BOAT 
By P. P. AVERY, M. E. 
G REAT is the novelty and sport en- 
joyed in ice-boating, with a sail 
and mast, but due to the danger 
of upsetting and changeable winds, it 
is not always available for use when 
desired. To overcome this a 2 cylinder 
motorcycle engine and aero propeller 
takes the place of a sail. 
Construct the triangle frame and sled 
runners of best kiln dried and seasoned 
lumber of sizes shown — 114" x 8" spruce 
for side members of frame, and 1% x 
10" spruce for center piece, and front 
cross member. The runners are to be 
1 14" x 10" oak, for the two front ones, 
and 114" x 6" for rear runners; all lined 
on bottom with V shape runners of slight 
angle and 14" holes drilled in every 4"; 
countersunk; the projecting sides of 
screw tops to be filed down so the entire 
runners are smooth and flush; 4" x 4" x 
10" pieces of angle iron are securely 
bolted into place and hold the runners to 
the cross frame. Use %" bolts with lock 
washers under all nuts. Use two pieces 
of same angle iron on rudder runner, 
bolting to standard pipe flange as shown, 
E are depending upon the 
friends and admirers of our 
old correspondent Nessmuk to make 
this department worthy of his 
name. No man knew the woods 
better than Nessmuk or wrote of 
them with quainter charm. Many 
of his practical ideas on camping 
and “going light” have been 
adopted by the United States 
Army; his canoe has been pre- 
served in the Smithsonian Institu- 
tion; and we hope that all good 
woodsmen will contribute to this de- 
partment their Hints and Kinks 
and trail-tested contrivances . — 
[Editors.] 
tiller rod bar is set. The tiller bar 
should be %" x 2 %" flat iron, 18" long 
with the square cut in center and l-%" 
hole at each end for tiller ropes to steer- 
ing drum. 
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The square hole is made by first drill- 
ing out a hole with drill of size to match 
outside dimension of square end on shaft, 
iS/Arr/- 
steering wheel is used and set-keyed and 
set-screwed to a 1" iron rod, threaded 
on bottom end as a steering rod, forming 
\ 
a novel and efficient steering arrange- 
ment. Also procure a second-hand alu- 
minum automobile “bucket” seat similar 
to a racing cpr seat, and a steel tool box. 
Fasten both in position as shown, hav- 
ing the proper distance from seat to 
wheel. Erect a footboard with bracket 
on each end and affix the throttle pedal 
thereto in natural position for the foot. 
These small parts and connections can 
be bought very cheap, second-hand, at 
any auto repair shop. 
N EXT overhaul the motor and have 
it in perfect order, strip it of all 
connections not absolutely needed. 
Make the propeller mounting of %" x 
3" flat iron secured to cross frame with 
%" bolts. At the top of this form an in- 
verted “U” loop bolted at end offset to 
hold the propeller bearing for shaft. 
Make 2 braces of flat iron riveted to 
main uprights and bend so a.s to carry 
down to centerboard. Bolt fast with %" 
2?£7A/L - &SZAMJZ 7&OD 
which makes a swivel bearing as shown 
in detail plan. 
A piece of 1%" round, soft steel rod is 
set-screwed to bottom flange and run 
through top flange. The end of rod is 
filed square, over which square end the 
and then, with sharp cutting chisel, take 
out the 4 corners, making it square. 
Connect 2 ropes (clothesline) through 
pulleys to wood drum on steering col- 
umn; the detail for which is shown. 
A second-hand automobile 14" diameter 
bolts and double nuts and lock washers. 
It is preferable to drill a 3-32" hole at 
thread end of bolts through which a 
cotter pin should be run. The chains 
and sprockets are from the motorcyle in 
question, and a machine shop will key 
