• 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).

Cartesiantube.com product test

scottly

Well-Known Member
*
Joined
Sep 13, 2006
Messages
1,638
Reaction score
4
After discussion of this company's products on this site, I asked the company to provide me a sample to look at.


For those not familiar, you can order a SKybolt fuse from Steen that is tack welded, fully welded, or you can order materials and build your own from scratch.


What Cartesian tube provides is a product to fill the gap...they can send you a shipment of tubes that are cut and notched per plans. All you would have to do is jig them and weld them. I think it's a nice gap-filler for those builders that don't have the confidence to cut and notch, but don't have the cash ($10k) for a tacked fuse. These kits start at$2500, plus shipping. So, for about $3500, you can avoid cutting and notching.


The sample sent to me had 6 different angles cut, one on each end of three pieces. The photos below show the fit and finish of these cuts from a couple of different angles.


My overall impression is very good. Good fit, smooth cuts, right on the money in measurement.


While I can't attest to the quality of an entire kit as far as fit and correctness, I can say the sample is very good.


20080301_122132_cartesian1.jpg





20080301_122203_cartesian2.jpg







20080301_122233_cartesian3.jpg
 

Latest posts

Top