Automotive alternators are sometimes installed on certified airplanes. Are automotive (or any other type) starters ever used on a certified engine. For instance, is there a Delco automotive equivalent to the starter on a C85? Thanks, Wallace

I've been ordering a bunch of round tubing from Aircraft Spruce but the only square tubing they advertise has sharp corners. I need some 1" square tubing with rounded corners. The specs. are not critical beyond that; I'll try to work with what's available. Any pointers? Thank you.

To see the details please visit www.aero.com.pl Marcin Lukasiewicz

I've got about 200 hours on my Rotax 582 engine and was flying one day when the tach quit. I bought a new Westach tach and installed it. When I started the engine the tach seemed to work just fine but then after a couple of minutes it quit. Thinking that I had a defective new tach I sent it back...

I am unclear on two Sport Pilot issues: First, a new pilot may qualify for a Sport Pilot ticket even though he or she takes a medication that would preclude a 3rd class medical. However, an experienced pilot with a higher ticket may not operate as a Sport Pilot if he lost a medical last year for...

Anybody building or flying a Spacewalker 2 or Revolution 2? I would like to find one in western NY or near Niagara Falls ONT. I might even be interested in picking up a set of unused plans or a project if the price is right. Dave N36078 '41 BC-12-65

I was reading some information on Fisher Celebrity builders websites and saw that one builder did not like the idea of glueing the fabric to the ribs as per the plans. The ribs on the Celebrity are very thin and he didn't think there was enough glue area for a satisfactory bond, so he rib...

When referring to magneto rotation, do you look at the magneto from the drive end or harness end? I believe a RH rotating mag would be clockwise as you look at it from the drive end, but I'm not sure. Any help would be greatly appreciated. Heino

Hello everyone, I'm back in the shop again with a new problem. That is, how to drill accurate holes on-center through steel tubing. I need to attach 2 short lengths of 1/2" EMT tubing parallel to the top tube of a bicycle frame, one on each side. The EMT tubes will extend about 20" forward of...

Recent quote for 16 of these bolts was about $20.00 each!! Anyone out there with a less expensive source?

I'd like to read MIL-SPEC TT-P-1757, which talks about zinc chromate. GOOGLING for it, I see offers to /sell/ the document. Shouldn't that spec be available on-line somewhere? Second, I see offers for "Mil-Spec TT-P-1757 kit". What would the 'kit' consist of? - Mike

This is for a hypothetical ultralight design, so just looking for suggestions here of where to look at... hopefully a 4-stroke, purchase price doesn't matter much, certification status doesn't matter either. Long time before overhaul matters A LOT... so, the longer the better. Is there anything out...

Can a GPS with compass, heading & groundspeed capability be used legally in lieu of a separate compass and airspeed instruments on an experimental homebuilt airplane? Or at least in lieu of the separate compass? Thanks

hope to meet some of you at the FAA Aviation Safety Center Sun n Fun complex. Sport Pilot Seminar & Fly-in information link http://jerryrooks.tripod.com/index.41.jpg -- Have a good day and stay out of the trees! See ya on Sport Aircraft group http://groups.yahoo.com/group/Sport_Aircraft/

Getting ferric chloride from Radio Shack is getting problematic. Is there a common household chemical that I can use for etching a circuit board or two? I seem to remember Jim Weir having an article about how to do it in the not to distant past, but I can't find anything about it in my back...

I'm building a Hummelbird, and I was hoping to use it towards my private pilot's license, but I've heard that I can't use an experimental for flight training. I looked through my FARAIM '97 and I can't find anything to verify that. Has anything changed regarding this since then? Can someone point...

I've become interested in the Weir W-2 Gyro and was wondering if some aviation enthusiast that has been to the Scottish museum might have some photos they could E-mail. Any other info on this old Gyro would be appreciated. The Internet info seems to be kind of sparse. Yeh, I know I'm getting...

whilst taking a break from my main project (http://www.dlc.fi/~jmpaaso/experimental/), I stumbled upon the concept of Bell xp-77. Being all wooden, it appealed to me and now I would like to hear anything and everything concerning this aircraft. Are there any existing drawings ? anywhere, anyone?...

Anyone aware of a source for a 3 1/8 inch panel mount compass? This is for a vintage restoration in which the usual 2 1/4 inch Airpath looks out of place. Thanks Steve

I am looking for a source for aluminum inspection hole covers and backing rings for metal wings. I could make them, but would be nice to find some ready to install. TIA Mike