DUC Hélices FLASH-R - Page 14

Certified FLASH-R
14/27
5.2.3. Use of adaptor spacer
An adaptor spacer is necessary in the following case:
 Engine propeller-shaft different than the type Rotax (other than P.C.D. Ø101.6mm/Ø4")
If needed, see in annex 9.1 Dimension of the engine propeller-shaft
Determination of the adaptor spacer length:
Measure the distance X between the propeller-shaft and the limit of the engine hood, then add 14mm.
Available adpator spacer:
Engine
Type
Model
Length (XX)
Continental O-200
Lycoming O-233 / 235
Adaptor spacer SAE1 AN6
E-SAE1AN6-XX
30mm
70mm
80mm
100mm
Lycoming O-320 (3/8 dowels)
Adaptor spacer SAE2 AN6
E-SAE2AN6-XX
30 mm
Lycoming O-320 (7/16" dowels)
Adaptor spacer SAE2 AN7
E-SAE2AN7-XX
90 mm
100 mm
Lycoming O-360
Adaptor spacer SAE2 AN8
E-SAE2AN8-XX
30mm
Placing of brake plates under the heads of the fixing bolts of the spacer to prevent the unscrewing of these. (steps
folding 1 → 2 → 3)
→ The length of the hardware necessary to fix the propeller is defined by the DUC Hélices design office. This is also
the case when it is necessary to set up an intermediate spacer.
→ Tightening screws: see step 7 of § 5.3. Propeller adjustment & Finalizing the assembly.
→ The spacers are delivered with the dowels.
Propeller-shaft not
outside the engine
hood
14 mm min.
1
3
2