• The Biplane Forum is a large global active community of biplane builders, owners and pilots. From Pitts to Skybolts, to older barnstormers, all types are welcome. In addition to our active community, our content boasts exhaustive technical information which is often sought after for projects and maintenance. This information has accumulated over the 12+ years the forum has been in existence.

    The Biplane Forum is a private community. Subscriptions are only $49.99/year or $6.99/month to gain access to this great community and unmatched source of information not found anywhere else on the web. We are also a great resource for non biplane users, since many GA aircraft are built the same way (fabric and tube construction). Annual membership also comes with two BiplaneForum.com decals.



Servo Tab Vs Trim? /Epoxy Primer

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

Pinballwizzard

Well-Known Member
Joined
Nov 13, 2007
Messages
59
Reaction score
0
Two questions for the experts. I have the fuselage ready to beadblast and paint with the exception of the trim servo mount. I plan to use the Polyfiber epoxy primer since it has served me well on the Pietenpol parts I have done in the past. Is that suitable as a top coat? In this instance Polyfiber is vauge about things. They clearly say to use it on metal that will be covered with fabric. However they don't specify how suitable it is for areas that are exposed such as the interior of a tube fuselage and they don't offer a topcoat product or mention the need for one that I saw.

The other thing that has me scratching my head is the servotab/ trimtab arrangement where one is supposed to be a trim tab and one servo. By my plans it shows the trim pushrod linked to the arms that are bolted together just above the pushrod. By all reason it seems to me that they would be identical in motion and function. What am I missing?

 

Latest posts

Back
Top