• 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 $29.95/year 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).

Master brake cylinder


Well-Known Member
Supporting Member
Aug 15, 2006
Reaction score
Nashville, Michigan
Question 2 of 2 - -
I have Gerde A-110 master cylinders fit to the AcroSport. I planned on overhauling them at some point, well the point is here.
I find nothing available as an overhaul kit. I am sure I can find the "O" rings at McMaster. Is there any other part that should be replaced ?

I also have a set of Paramount cylinders that may have been made by Cleveland - not sure on this. Anyway, I purchased these at Oshkosh several years ago, they had "serviceable" tags on them. I am thinking I might be better off going with these but they are 1" longer than the Gerde's and not only require different mounting attachments but I would totally lose the "parallelogram" geometry of the rudder pedal / brake cylinder.

So, again, any advice is totally appreciated, Thank you.

Latest posts