Cycle News - Archive Issues - 1980's

~ o .... C\J o Z 18 them how to do it. For that reason I came here to show yo u a nd th e Cagiva deal ers how to do it. " Ducati h as been producin g th is system for o ver 30 years. a nd if they had some specia l p ro blem , they wo u ld ha ve had to qu it long ago. They are th e o n ly o nes to su cceed with th is system in a production engine ." One o f the jou rna lists present ask ed Dr. T agl ion i what th e maximum rpm wa s for th e desrno eng ine; Dr. T aglioni rep lie d. "12.500 rpm." The journalist the n asked what th e redlin e would be if it used valve sp rings in stead of th e desrno system. " Abo u t 9000-9500 rp m," Dr. T agl ioni sai d . " If ove r-rev. the re will be a pi ston. co n nec ting rod. cra n ksha ft p roblem. not a valve p ro blem." Dr. T aglioni co ntin ued. " W he n over-rev. yo u go over th e maxim um lin ear speed of the p isto n , which is 20 meters (66 feet ) per seco nd." Anothe r jou rnalist asked Dr. T aglioni wh y other m anufacturers didn 't use th e desm o system, The question was a n swe red by the interpreter and al so by Cagiva North America Genera l Manager Daniell a Carnelli; the interpreter sa id. after co n su lting with Dr. T aglioni in Italian , th at it was because o f th e diffi culty o f manufacturing motorcycl es usin g th e system . a nd th at Dr. Tagli oni had secre ts used in th e manufacturing process that he co u ld n' t reveal; Carnelli ela bora ted by say ing th at n o japanese manufacturer, for exa m p le. would use th e system because th ey ' h adn't th ought of it th emselves; it was a mailer o f pride. sh e said. Anoth er journal ist asked Dr. Tagli oni if th ere was an ything preventin g him from putting togeth er two o f th e 650cc V-twins a nd producing a V-four. Dr . T aglion i a ns wered th at he a lrea dy built a V-Iour, a I260cc o ne . in 1961, and th at h e sent two o f th e m achines to th e U. S. Du cati d istributor o f th e time, Berlin er Mot ors. T he engine. wh ich used o ne cra nks haft with th e two o u tside cyli n ders a ngled upward a n d th e two inside cylinde rs a ngled downwa rd , was smoother th an today's j a panese V-fours but was never put into .producti on ; Dr. Tagli o n i sa id he do esn 't kn ow what happened to th e prototype en gines. Former Berliner empl o yee Ren o Leoni volunteered th at one o f th e engi nes wa s so ld to a privat e in di vidual a nd hadn 't been seen smce, "The re's n o p roblem to make (a V-fo u r)." said Dr. T agl ion i, con ti n uing. " Bu t I d id th a t design 20 years ago. I don ' t need to mak e a co m p lica ted mo to rcycle to run fast eno ugh. Two well -d es ign ed cy li n ders is eno ug h. We have a seco nd fourcylinder prototype a nd -are deciding wh ether now is th e moment to relea se it or n ot. I think it's not necessary." An other journalist asked if th ere were a ny technical barriers to building a fou r-valves-per-cyl inder des mo h ead. " No." a ns wered Dr. Taglio ni, "on ly cos t. We have done a lready tes ts on a four-valve head . but with valve sp rings. but never got th e sa me power as two-va lve with desm o. The need to use four valves ins tead o f two co mes fro m th e need to use springs; you m ust red uce th e mass o f eac h pan. You don' t hav e th is p roblem with th e desrno system; everythi ng is g ui de d u p a n d down. And yo u get a bi gger inl et , a nd open bigger. with two valves co m pa red to four. " " He says he' s going to be designing new engines at Cagiva unt il h e ca n see no longer. " sa id th e interp reter to ra p up th e press conferen ce. " He wants to to personall y thank bo th Mr . Cas tiglio nis because they st ill bel ieve in him. " At th at . Dr. T aglion i received a standing ovation from the crowd. _ --- ..-.. I'~LU -- ~ ~ ..... -- ... - -. -- -- -- -• -- .....ftl~~~_I~ -~- ~-~ ~ First Products' Mod el BK Trailer has a low- slung main fram e and a 57" stance. The vee-style tongue and fram e m embers a re made from forged steel , a nd th e unit ha s a ca pacity of 750 pounds. From yo u r deal er or have him co ntact First Products, In c.• Dept. CN . P.O. Box 1425. Tifton , GA 31794, 912/ 382-4768. Pipeline' s Road Warrior ex ha us t systems are ava ila ble for man y popular lat e mod el spa n bikes, includi ng th e H onda 1000 Interceptor. and feature steel co nst ructio n. a sat in black fin ish a nd a lu mi n u m a lloy sil en cers . Contact RSC Perfo rm ance, Dept. CN. P.O. Box 14664. Atl anta , GA 30324, 404 /982-01 38 for more in formation. Griffin 's GS250 helmet has th e " Air Adjust Plus" ventil ation system. a terry cloth interior with integral neck roll, a flush -fit face shield and soft foam interior padding to give a " p ressure-free" fit. The helmet meets DOT a n d ANSI standar ds a nd sell s for S59.95 from your dea ler or have h im con tact Griffin Products, In c.• Dept. CN . P.O. Box 375. N. T ro y, VT 05859, 514/ 378-1336. RPS (Rich ter Perform an ce System s) has a co mp lete lin e o f p las tic di sc brake protectors , fork guards, mas ter cylinder guards and mud flaps for m ost m otocross bi kes. Made fro m polyethy lene. the ite ms come in gray, white, red. yellow and bl ue. For m ore in formatio n. contact Richter Perform ance System s, Dept. CN, 2850 E. 29th St.. Long Beach , CA 90806, 213/ 426-3498. C.G .G. Sal es offers Cordura nylon saddlebags with you r em broi dered monogram , priced a t $83.95 per pa ir . o r a pl a in style. p riced a t S73.95. The bags fea ture two -in ch- wide mountin g straps. ra in sea ls a nd qu ick-a ccess bu ckl es. To o rder . co n tact C.G.G. Sal e s. Dept. CN , 30354 Skoki e Hi ghwa y, Lake Bluff. IL 600 44. 3 12/ 689-9 19 1. McCrane rear set s co me in models for most spon bikes. including th e Kawasaki Nin jas and Yamaha FZ750 a n d Fj600. They feature rubber-covered folding foorpegs, h eirn joints w ith zerk fittings a t co nt ro l j u ncti ons , and peg height adjusters. From more information. co n tac t RSC Performance. Dept. CN . P .O. Box 14664. Atlanta. GA 30324. Tour Master's Fingerl ess Gl oves have spandex between th e fingers a nd on th e backs, p added palms, and a wide suede strap: The gloves sell for 16.95 at yo ur dealer or co ntact Tour Master. Dept. CN , 2115 Colorado Ave.• Santa Monica, CA 90404.

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