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Sprog question
So I have heard different people say different things about spogs and how tight to make the velcro that holds them. What does a trike pilot need to know about Sprogs?
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6 Replies
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Larry or Wes has a video showing what sprogs do on the ground and in flight. Worth watching. It is on youtube.
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link?
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From my North Wing manual …
put the Velcro loop around the end of the sprogs. Leave Velcro loops slightly loose (approx. 1/2” gap)
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The sprog loops have little bearing on how the sprogs work. The reason for the Velcro being left loose is so the Velcro doesn’t get hung up as the sprog passes in and out as the wing flexes.
The sprogs were only active in this video when he was on the ground. After that, they had no purpose during this demonstration. They are critically important in the air to prevent a tumble during negative Gs. But 99% of flights are 100% positive G load flights. Until that one time they activate (cables go tight) and keep pitch stability.
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Thanks Larry for the explanation
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Video from Paul H.
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