Saturday, November 9, 2013

Rough Roads

The EAA literature will tell you that many projects get stopped in their tracks by difficulties encountered by the builders.  This is especially true of plans-built projects as there are many more opportunities for problems and typically less support from the plans provider. 

I entered this project well aware of the problem and determined to slog through the difficult times. 

Well, I have been slogging through one of those times.  I have not completed an airplane part since August.  But work, and the expenditure of money, has continued.  The transition from the woodworking exercise of rib fabrication to the metal fabrication of the construction of the numerous fittings necessary to complete the wings has proved to be difficult, frustrating, and time consuming. 

The first difficulty was re-acquiring what welding skills I once had.  Only to learn that the skills I once possessed did not translate well to airplane construction.  My previous skills centered around fabricating tractor parts.  Welding heavy duty parts is actually a lot easier than welding the much lighter metals involved in airplane construction.  I am now reasonably confident in these skills.  But it took purchasing a lot of equipment (including both oxy/acetylene and TIG welding equipment) and a lot of practice.

Then I was stymied by difficulties encountered in bending metal fittings.  Perversely, while much of the welding is on thin gauge metal, an appreciable amount of the bending must be done on some heavier gauge metals.  I have solved the problem of bending small fittings from .060" to .090" 4130 steel.  But parts with dimensions greater than a couple of inches stopped me cold. 

My first attempts using the 18" bench top leaf brake that I own were total failures, despite the fact that the specs for the brake indicated it was up to the job.  Not even close.  I spent about a week fussing about the next step.  I contemplated purchasing the Harbor Freight floor model leaf bender.  Its specs were about the same as the little bench top model.  I was loath to spend the money for that brake only to find it was not up to the job, either.

But then I ran across a company called SWAG Off Road.  They manufacture a kit that converts the Harbor Freight hydraulic arbor press into a press brake.  This is a very impressive piece of equipment, so I sprang for the HF press and the SWAG kit.  While the hydraulic press is typical HF, but adequate for the job, the SWAG kit is very high quality.

Problem solved!  Not exactly.  The SWAG kit assembly requires welding.  I was not intimidated, what with my newly acquired welding skills.  But alas.  My welding equipment is sized for aviation welding.  Not the heavy gauge welding required to assemble this kit. I have been unable to get a puddle (welders will understand) going on any of the components.  The lightest components are fabricated from 1/4" 4130. 

At this moment I am awaiting the assistance of a friend with much heavier duty welding equipment than mine to complete the kit.  Until then, I am at a standstill.

I thank all of you who have been checking in from time to time only to see no progress.  Progress will continue in the very near future.

Just because some photos are better than none, here are some shots of my little shop as it looks today.


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