COMCO IKARUS
Maintenance Manual C42 Series
MaintenanceManual C42-
Series_Issue_VII_18.02.2014.doc
Revison No.:1 51 from 107
4.1.4 Rivet connections
Many of the permanent connections in the C42 take the form of rivet connections.
This is particularly the case in the fuselage tube, engine mount and cross beam.
Here, mainly special blind rivets (e.g. Magna Bulb - brand name) are used.
These special blind rivets are characterised by large breakstems, great axial contact
pressure and a very high shear strength.
Figure 54: Rivet connections on the engine mount
To ensure that all these conditions are fulfilled, it is paramount that the correct type of
rivet with the correct grip length be used. We, therefore, urge everyone to use only
original spare parts. Rivets that are pulled with ordinary hand tools, such as blind
rivets offered in normal DIY shops, cannot replace these special rivets.
In secondary structures with low strength requirements, however, simple blind rivets
made of aluminium alloy or steel are used. Simple hand tools available from good
hardware shops can be used to pull this kind of rivet.
A special application for blind rivets is the windscreen attachment. Here very light
and soft blind rivets with large heads are employed (3.2 mm diameter).
When mounting the windscreen care must be taken that the bore holes in the
windscreen material have a diameter of 3.3 - 3.4 mm to prevent star-like cracking
under the rivet head.
Figure 55: Glazing rivet joint
3,2
3,4
GFC
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