Experimenter

MAR 2015

Experimenter is a magazine created by EAA for people who build airplanes. We will report on amateur-built aircraft as well as ultralights and other light aircraft.

Issue link: https://experimenter.epubxp.com/i/471466

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1 Some restrictions may apply. Visit www.aircraftspruce.com/eaaDiscountGuide.html for a list of discounts . 2 Subject to credit ap- proval. Net purchases are purchases minus credits and returns. Accounts must be open and in good standing (not past due) to earn and redeem rewards. Bonus points will be credited to your account within 6-8 weeks after fi rst purchase. 3 Cash back is redeemed in the form of a statement credit. The creditor and issuer of the EAA Card is U.S. Bank National Association, pursuant to a license from Visa U.S.A. Inc. © 2014 U.S. Bank National Association Enjoy these benefi ts: • Up to 10% off purchases at Aircraft Spruce & Specialty 1 • 1,000 bonus points after fi rst purchase 2 • One reward point for every $1 spent in net purchases everywhere Visa ® is accepted 2 • Redeem points for your EAA membership, cash back 3 , merchandise, and more Plus, each purchase helps support EAA programs. Cardmembers have already helped contribute over $600,000 to projects including the EAA AirVenture Museum and various youth aviation programs. Apply Now! Visit usbank.com/EAA_Aviation to learn more. Save on purchases at Aircraft Spruce with the EAA Visa Signature ® Card! Visit EAA.org/ SportAir to register today or call 1-800-967-5746 for details. EAA SportAir Workshops are sponsored by Get Hands-on. Get the skills you need from the experts you trust. SportAir Workshops Dates .....................EAA SportAir Workshops Offered ...................... Location March 7-8 ..............Composite Construction, Fabric Covering, ................ Dallas, TX Sheet Metal Basics, & Electrical Systems and Avionics March 14-15 ..........TIG Welding................................................................... Griffi n, GA March 21-22 ..........Composite Construction, Fabric Covering, ............ Oakland, CA Sheet Metal, & Electrical Systems April 18-19 .............Composite Construction, Fabric Covering, .....Kansas City, MO Sheet Metal Basics, & Fundamentals of Aircraft Building May 16-17 ..............TIG Welding................................................................... Griffi n, GA July 19-20 ..............Van's RV Assembly ....................................................Oshkosh, WI July 21-22 ..............Van's RV Assembly ....................................................Oshkosh, WI 34 Vol.4 No.3 / March 2015 UNDER THE COWL Full synthetics may be the way to go, as these engines don't use roller tappets. Higgs said, "These are more trouble than they are worth, and at the low speeds that these engines oper- ate, the fl at tappet approach is ef ective. However, design, mate- rials, and fi nish are critical to make those components work." BOT TOM LINE—WHAT'S THE PRODUCTION SCHEDULE? Right now, cylinder production is ramping up; the fi rst cyl- inders are destined for new-build engines before any will be available for fi eld upgrades. ACE is currently gearing up to upgrade legacy Lycomings to the ACE specs. Pricing for the various confi gurations and models is on the website, www.ACE-Performance.com , and ACE answers the phone at 805-996-0800. The 320-hp engine will be available in the summer of 2015. The current confi gurations are: • R360—approximate weight 250 pounds; 208 hp at 2750 rpm, 222 hp at 3050 rpm. For reference, a 190-hp 360 with magnetos weighs about 280 pounds. • R409—285 pounds; 230 hp at 2750 rpm. • R540—370 pounds; power is still being tested. Expect 315 to 330 hp at 2750 rpm. (A developmental turbocharged version targets 700 hp.) For reference, a high-perfor- mance 540-hp engine of similar power weighs about 450 pounds. Tim Kern, EAA 852075, is a private pilot and Certifi ed Aviation Manager as well as an aviation writer and consultant based near Indianapolis. You can fi nd him online at www.TimKern.com . Radical (for aviation) ring placement and piston design are apparent when rings are superposed over their grooves. Photography courtesy of ACE

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