Brodhead Pietenpol Association

Original Posted By: Michael Perez
Hello everyone on the Piet list. I just finished doing some machine work on the 4130 chromoly tubing that I received from my supplier in Portland Or.for axles It is chinese in origin and although my supplier assured me that it was made to the same astm spec. as the USA made stuff is, the following is what happened. I machined my axles 16 inches in from each end approximately .0025 to make them round which they are still not perfectly round and in the process of cutting the outside surface off discovered a crack that ran almost 2.5" length ways in the tubing. I am very diapponted in the quality of this off-shore tubing and will be replacing this tubing hopefully with USA made on Monday. Also from previous experience, this metal did not cut butter smooth like the rest of the 4130 that I am accustomed to using. We tried many combinations of cutting tools and different speeds to no avail. Very difficult to work with.Ernie MorenoPiet 2431 ----- Original Message -----

Original Posted By: Rick Holland
Subject: Re: Pietenpol-List: off shore tubing

Original Posted By: Rick Holland
I was going to buy the USA stuff but was assured by my supplier that the off shore stuff met the specs.. and that it was much more reasonable in price. We are building five aircraft with Pietenpol style landing gear My supplier said that if would cost 30% more in cost (USA supplied). I'll will report back the list after I make inquires on Monday to the outcome of this setback.Ernie MorenoPiet 2431---- Original Message -----

Original Posted By:> Rick Holland
Thanks Ernie,Sorry you have to go through this, but appreciate whatever you find out. If you find a supplier of good US tubing, please let us know.Kip GardnerOn Jan 9, 2011, at 10:17 PM, Ernie Moreno wrote:> I was going to buy the USA stuff but was assured by my supplier that > the off shore stuff met the specs.. and that it was much more > reasonable in price. We are building five aircraft with Pietenpol > style landing gear My supplier said that if would cost 30% more in > cost (USA supplied). I'll will report back the list after I make > inquires on Monday to the outcome of this setback.>> Ernie Moreno> Piet 2431>> ---- Original Message -----