Harley-Davidson began in a shed, went to war, became the symbol of American individualism and ended up "king of the road", all in 90 years. Flathead: 1909-1936 The Flathead was named because of the telltale flat vented tops that are regognizable at the top of each cylinder head. This is the famous motor that propelled Harley-Davidson to victory after victory in the motorcycle races of the twenties. Knucklehead: 1936-1947 On the eve of WW2, Harley-Davidson introduced an overhead- valve V-twin with knuckly covers on the valves. The new motor, affectionately named the knucklehead, performed well both for HD and for America in the difficult years to come. Panhead: 1948-1965 With improvements to engine design, like hydraulic valve lifters that supplied oil through rocker arms, the panhead hit the market in 1948, named for the pan-like cover where the knuckles used to be. Shovelhead: 1966-1983 By 1966 the Panhead underwent still more improvementsthe most noticable being the distinctive enclosed cylinder head in a sleek, slightly curved top. At a glance this looks unmistakably like a shovel with the pushrods resembling the handle of a shovel, and the head, the shovel itself. Evolution: 1983-present In 1984 on the heels of a bold employee buyout of AMF, The motor company went public and introduced it's now famous redesign of the v-twin. This radical new design utilized styled square blocks to house the valves. This motor, revered as the Evolution engine is known amongst Harley enthusiast as "the Blockhead." Twin Cam 88: 1999-present With numerous American motorcycle manufacturers trying to surface and re-surface Harley-Davidson introduces it's most revolutionary engine yet. The Twin Cam 88 gets it's name from it's two cams versus one cam in all it's ancestors. This motor also goes by the the nickname "Fathead" for just exactly that, bigger heads. With this new engine design Harley-Davidson puts one more notch in it's insurance for success. You have to ride one! |
Be sure to bookmark this page, it changes as new motorcycle art becomes available. If you would like to be added to our mailing list, drop us an e-mail and we will keep you posted as new items arrive. Please read our privacy statement located in our info section. Online purchases are made with our secure online server, you can also print the order form and fax the order to The HD@rt Gallery® 432.837.2508 or you may place your order at 432.837.2500. All prices and shipping charges shown are in U.S. dollars. Please keep in mind, the art shown here is copyrighted by the respective artist and is shown for display purposes only. It may not be reproduced, copied or used in any way without the express written consent of the respective owner. Note: HD@rt sells some officially licensed Harley-Davidson® products. However, any products with the trademark, name, word or OEM part number used in this catalog by HD@rt is intended to be as a reference only to that product. None of the items in this catalog were manufactured by the Harley-Davidson® Motor Co. The words, Knucklehead, Panhead, Flathead, Shovelhead, Blockhead, Bad Boy, Duo Glide, Electra Glide, Evolution, Fatboy, Fat Boy, H-D, Harley, Harley-Davidson, Hydra Glide, Heritage, Road King, Roadster, Twin 88, Softail, Sportster, Springer, Heritage, Dyna Glide, Sportster, Sturgis, Super Glide, Low Rider, Wide Glide and Softail are registered trademarks of Harley-Davidson®,Inc.,Milwaukee Wisconsin, U.S.A. The following designations for Harley-Davidson® motorcycles are used for reference only: EL, FL, FLH, FLHR, FLHS, FLHT, FLHTC, FLHTC-I, FLHTS, Ultra, FLHX, FLST, FLSTC, FLSTF, FLSTN, FLSTS, FLT, FLTC, FLTC Ultra, FXB, FXD, FXDB, FXDC, FXDG, FXDL, FXDSFXDS-Conv., FXDWG, FXE, FXEF, FXLR, FXR, FXRC, FXRD, FXRDG, FXRP, FXRS, FXRSE, FXRS-Conv., FXRS-SP, FXRT, FXS, FXSB, FXST, FXSTC, FXSTS, FXSTSB, FXWG, Twin Cam 88, GE, K, KH, WL, WLA, XL, XLCH, XLCR, XLH, XLH 883, XLH 1100, XLH 1200, XLR, XLS, XLT, XLX, AND XR1000. © 1997 - 2006 High Definition Art Gallery, All Rights Reserved |