Cycle News is a weekly magazine that covers all aspects of motorcycling including Supercross, Motocross and MotoGP as well as new motorcycles
Issue link: https://magazine.cyclenews.com/i/125881
00 ... II) ....:::l o ...., u o BHly Uhl In acllon. Photo by Jack Mangus: Only the best riders usin!: the best equipmentstand a chance ofwinnin!: a Gold Medal in J.S.D .T. competition. U.S. Riders Dick Burleson. Carl Cra nke, Tom Pent on. Billy Uhl, Jack Pen ton and Malcom Smith won Gold Medal s this yea r. and the y all used Prest on Pett y Products on their bikes. If vou're after the !:old . in any typ e or competition. don't accept imita tio·ns. Insist on !:enuine Preston Petty Products for your bik e. •. 'f eDER" Femtrrs - the OR/GINA /. .\-Iud Fenders • .'tIl,Vt " .\/ VDER" Fenders - fo r .\ I il'; \1.X.rr.\ • BAJA Fenders - the World.' .\ loM Popular . Endu ro and .\f. K .\'umhc·, PIOll '.\ " CO VER - .\-I UDER 'o \fud Flop.\ . Yamaha Rror Fender Brad, ,.,.'i - Univervat Fron t BracJ. (",.\ If EX-G R IP Hamt Grins • GARDER Fork Prote rt ors » EX G/ .'Ii£ GUARD S(it/ Plates • Manning/Norton Liner: Cu",hill orimr HEAI>J.IGHTIS UW8£R PLATES . Cw uhinOlion TOOl. BOX / :\'U.\fBER PI.A res» Aslippery shape to assault the'salt See Your Local Dealer For De/ails By Lane Campbell Sometime during the first week of Oct ob er . Denis Manning will strap himself into a own d ual-e ngined No rton streamliner of his des ign a nd atte mpt to br ea k HarleyDavidson's long-sta nd ing rnoto rc vcle la nd speed reco rd at the Bo nnevi lle Sal t Flat s. Working i n his favor is the fact t hat Manning also designed and built the record -holding Harley- Dav idson lin er . The new 16-100 1-1on9 machi ne was officially unv eil ed in Hollywo od by Norton The Scorpion Hydrogen peroxide ro cket po wered d rag race motorcycl e ridden by Arv il Po rt er is now ava ilable for bookings at drag races, car sho ws or whatever. Fu ll o r partial sponso rship also available! Villie rs Tr iumph Se ptember 18 . Wha t w ere t he majo r lesso ns learned fro m t he H·D effo rt? First , the rider ca n see o ut of t his one. Second , t he ma ch ine is t rul y ae rosta ble in its d esign speed ran ge . as it inco rporates two caref ully mat ch ed , t hree-d imensional ai rf o il sectio ns in its ~f ibe rgl ass body enve lope. Wit h a drag coefficient of .0 758 .. it is o ne of the most ae rody namically efficient sha pes eve r tested in t he Cal Tech wind t unnel. The two engines are virtually stock 850cc Com mando units , prepared by T .C. Chr istenson a nd Joh n Gregory us ing L1oyd-Man ni ng ~Blackwell-designed injectors. running unsupercharged o n a met hanol base. nitro fue l. T hey are connected to a separate H·D gearbo x, and geared fo r ·300 M PH at 6900 RPM . Rear suspension is by rigid struts. while the front is carried o n modified Formula O ne car units . The ce nter-hub steering has a loc k-t o -lock spread of 30 degrees . cont rolled by .Iinks from a stubby set of hand lebars that are in turn mounted on a swing-up subfra me which piwts ou t of the way to let the rider in a nd out of the slim cockpit . . The mild-stee l frame is nic kel-bronze welded, English style, a nd weighs 150 pounds ba re. Two re tr actable sk ids st ab ilize the mach ine a t low spe eds a nd drag chutes supplement an aircraft rear d isc brake for slowing. Skids and chute are a ct ivated b'y a charge of 500 ps i bottled nitrogen stored in the nose .. For more information, call o r write: Mr. Do nal d Gri mes. Roc ket Crusade, 110 East Andrews Drive, N.W. Suite 204, Atlanta, Georgia 30305. 404/23i-3295. ~anuno~('n')no~on,)nononono~ l, !~~THE~f.'MAHA ~i~ ~ The whol e project is a techni cal tour-de-force, and it has been done pa inst akingly well by Manning a nd his clo se-knit crew . If there is any weak link, it will be the tires. The Land Speed Record Goodyears were not available, so special Dunlops are being used. Manning put his tire problem this way at the press conference : "The Engl ish, with t he ir usual capacity for understatement, told us the tires would be " C, .. OK up to 300 MPH. but over 300. Boom! We were supposed to get 40 tires from them , but only received 22 . The r est failed in test . It's -un - no t done the best for our .. • co nf idence ." "If we crash , Wixom guarantees we can have new bodywork w ithin three days," he added at another paint in the conference. To br ing home .the record, Deni s has to crack ,.. r • tot 10 ~ ~O ~ BOOT SALE NORSTAR BUCKLE VIKING BUCKLE GP BUCKLE WALKER LAC!, UP " FR E E" one pair MX sock s with boot purchase $59 .95 $59.95 $49.95 $31.95 0 24020 Narbonne Ave., Lomita, CA. 90717 . Phone (2131534·231 1 't~O 't<: 'tEO r~o 't<: TEel reo t',c.' 't',,-, t'", n.o o r 0& c ~ re o '(, 265.492 MPH on a two-way average. He wants• however , to go 300. •