DG Flugzeugbau GmbH Technical note page 1 from 1

76646 Bruchsal No. 1000/26

Subject : Adapter ring with elastomeric damper element between propeller and upper drive 

belt pulley

Effectivity : DG-1000 variant DG-1000T

Accomplishment : Prior to next engine use

Reason : In some cases the eccentric axle of the reduction gear of the engine SOLO 2350C 

failed. Even the reinforced axle (SOLO part No. 20 11 316) failed in 2 cases see 

EASA Emergency AD No. 2015-0052-E and SOLO inspection instruction No. 

4603-1.

To reduce the loads on the axle an elastomeric damper element between propeller 

and upper pulley has been developed. This element enables the engine with 

reduction gear to perform movements against the gyroscopically “fixed” propeller 

disc.

Instructions : 1. Remove the propeller. The adapter ring 10M39 won’t be used anymore.

2. Remove the eccentric axle including the upper drive belt pulley according to

MM section 4.10.1 d).

3. Ship the unit axle with drive belt pulley to the Solo company. 

Solo will return the drive belt pulley assembled with new rear bearing and new 

axle Solo 20 31 211 V2 and with adapter ring with elastomeric damper element 

10M67. In addition you will receive 6 bolts 10M74 for mounting the propeller.

4. Reinstall the unit according to MM section 4.10.1 d).

5. Reinstall the propeller according to MM section 4.10.2.

6. Torque the upper engine rubber mounts so that they are compressed to a value 

of 25 mm (1.06 in.) see MM section 4.10.6.4 item 6.

7. Exchange the following manual pages against new pages issued August 2015 

marked with TN1000/26. Respect the changes marked in the right hand 

margin.

Flight manual: 0.2, 0.4, 4.14

Maintenance manual: 0.2, 0.3 - 0.6, 0.9a, 0.11, 1.18, 3.5, 3.8, 4.20, 4.20a, 4.26, 

4.28, 8.1 – 8.3 diagram 13, diagram 15, diagram 15a

Note: MM page 8.2 and diagrams 15 and 15a belong to TN1000/28 and are 

marked with TN1000/28.

Material : Drawing 10M072 

1 unit adapter ring with elastomeric damper element 10M67 already installed to the 

drive belt pulley with eccentric axis with:

6 x 8,4mm Schnorr securing washer Type S

6 lock nuts M8 Thermag DIN980 cu

6 bolts M8x70 DIN931-8.8 zn with hole for lock wire 10M74

Lock wire dia. 0.8 mm

Manual Pages see above

Weight and balance : influence negligible

Remarks : Instructions No. 1 -3 and 7 may be executed by the pilot/owner himself and are to 

be inspected and entered in the aircraft logs by a licensed inspector together with 

instructions 4 up to 6.

Instructions No. 4 up to 6

1. EASA countries: The actions have to be performed in a Part -145 approved 

organisation, or in a Part M, Subpart F approved organisation according to the 

regulations of the Part M and released according to M.A.801.

2. Non EASA countries: The actions have to be performed in a licensed 

workshop. All instructions are to be inspected and entered in the aircraft logs 

by a licensed inspector.

Bruchsal, date: 23.09.2015

Author: Wilhelm Dirks Modifications approved by EASA Date 9 November 2015

under Approval No. 10055434
Diese Zeichnung ist Eigentum der DG Flugzeugbau GmbH

.

Nicht ausdrücklich freigegebene Vervielfältigung oder Weitergabe an Dritte ist verboten.

DG Flugzeugbau GmbH.

Maß

Tole

ang. 

ISO2

1

Änderung

No

G

Ausg. ab Wnr. Datum Name

G

Maß

Toleranzen nach Arbeitsanweisung BA 1

Schweißen nach Arbeitsanweisung SA 1 

Drahtsicherunglock wire

A

A Schnitt A-A

Propelleradapter mit GummidämpferPropelleradapter with rubber damping element10M67

KeilriemenscheibepulleySolo 20 15 220

SicherungscheibeSchnorr lock washer8,4 Typ S

Stoppmutterlock nutM8 ThermagDIN 980 cu

Stehbolzen (eingeklebt in 10M67)Stud bolt (glued in 10M67)M8 x 35