Fokker D7

Up / terug

Partly assembled, it probably spent decades under a tin roof, perhaps in Arizona.

Most of the wood has become brittle as have the balsa cement joints. The plan shows a glow motor installation starting at ,19 (about 3 cc) and the original builder had a VECO 35 lined up. How long could this airframe have withstood such forces?.

What kind of lifecycle did the manufacturers have in mind?

After one rough landing, straightening the undercarriage would tear out the bulkhead.

Think of the effects of glow fuel on the structure and covering below and behind the engine bearers.

Fencing hardware used to guide the elevator the tail area.

The half inch rudder deflection in the instructions came out at about twice that number. The elevator is firmly hinged with nylon strips secured by brass tacks that protrude.

Fortunately the crusty cement joints yield before the old balsa does and so the early building steps are reversed. More recent Sterling products are known to have instruction sheets that include full size examples of every part, but this plan shows few parts and we must recover as much as possible from the wreck or leave the old build intact and strengthen existing joints.

Pleasant weather is most helpful when you need to sand lots of old balsa wood. This step is both a means of checking the strength of the old structure as well as a morale booster.