Specifications

SONIC OWNERS MANUAL
Version 1.01 27
CHECKING THE SONIC STABILITY SYSTEM
Use No. 8 Plaited Nylon Bricklayers Line to check the luff lines of your glider, this is done by using
a string with a loop on each end, place one end of the string over the batten, below the luff line
which is being measured.
Attach the other end of the string tightly over the batten of the same luff line in the opposite wing.
Measure the height of the string above the keel to the proper height.
Use the same method to measure the second luff line.
Sonic Stabilities
Batten Numbers
Model
2 3 4 5 6 7 8
Sonic 165 187mm 254mm
Sonic 190 225mm 259mm 247mm
Sonic 190 VG Loose 205mm 226mm 219mm
Sonic 190 VG Tight 211mm 239mm 235mm
String
Keel tube
9
8
7
6
5
4
3
2
1