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J. + G. Bösch
Sägemattstr. 10c
CH - 3123 Belp
Tel: ++41 31 819 52 47
Fax: ++41 31 819 30 13
Rotary.Flight@belponline.ch
No. 1 in model helicopter  

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+++++ we reserve the right to change technical specifications and prices +++++

Currency is Swiss Francs (CHF)

12 V Starter
Torque Drive
up to 30ccm engines
Weight: only 940g
Ord. No.
320.8090
CHF
79.00
Adjusting Rossi carburator
Basic adjustment:
Needle A: with open trottle the needle will
be in the middle of the tube
Needle B: 3 3/4 turns open. This needle
is only for 3/4 to max gas. Even with
pressure tank it should not be less than
3 turns open

Adjusting muffler:
From exhaust port to the internal
baffel (messure internaly):
10:1 gear ratio approx. 36-38cm
9 : 1 gear ratio approx. 37-39cm
8,6:1 gear ratio approx.38-40cm

Set the gas curve lineal!
fuel mixing:
10-15% synthetic oil,
no nitro

Filter for carburator:
we recommend to mount
a carburator filter
(No. 1100/Rossi)
 
Engine Thermometer
from -50°C until + 280°C
(also in °F)

the ideal way to set-up
and adjust any engine
R 8410

CHF 39.90

Mechanics for
Big Lama


without groundplate,
Tower, swashplate, scale parts
Mechanics with
engine 34cc

Silencer set


CHF 1990.--

CHF 280.--

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