Yamaha YZ125, YZ250F, YZ450F – 2017 г.
Patsiku lokongola, ladzuwa komanso lotentha kwambiri, tinali ndi mwayi woyesa zitsanzo za Yamaha 2017 ku Dorne. Nyimboyi inali yabwino kwambiri, yopanda slide kapena tchanelo. Mvula yomwe idagwa usiku womwewo idatsimikiziranso kuti wanyowa. Ndingafotokoze ngati njira yachangu komanso yosangalatsa. Pansi pake ndi chinthu chapakati pa mchenga ndi nthaka. Njirayi imakongoletsedwa ndi kulumpha kwakukulu kwa ski, ku Dorne mutha kuwuluka kuposa mamita 30. Ngodya ndi zotseguka, zomwe zimalola dalaivala kukhalabe ndi liwiro lalikulu pa iwo.
Mu nthawi kuchokera 2008 mpaka 2014, Yamaha anali ndi chiyeso chachikulu, nthawi ya vuto laling'ono, koma pambuyo 2014 kampani mwaluso anakoka lokha pamodzi ndipo anayamba kugonjetsa utali wa motocross. Akatswiri opanga njinga zamoto anayamba kuchita khama ndiponso kusamala kwambiri za njinga zamoto, ndipo zotsatira zake zinaonekera mofulumira kwambiri. Kwa zaka ziwiri zapitazi, Yamaha adadzitamandira ndi mutu wa AMA komanso mutu wa MXGP.
Kuyambira chaka chatha, injini ya 250cc yokhala ndi sitiroko anayi yokha The See yasintha kwambiri, ndipo palibe zambiri zomwe zasintha kuchokera kwa mchimwene wake wamkulu, 450cc-stroke anayi. Onani Zachilendo zokhazokha ndi ma brake discs opangidwa ndi zinthu zina zomwe zimagonjetsedwa ndi kutentha. Mu 125cc-stroke ziwiri, zithunzi zokha ndi zatsopano, ndipo pankhani ya YZ250F, pali zambiri zatsopano. Injini ili ndi silinda yatsopano, valavu yolowera yasinthidwa, ndi yayikulu ndipo ili ndi kasupe wosiyana. Bicycle ilinso ndi kompyuta yatsopano ya ECU yomwe imalola injini kukhala ndi mphamvu zambiri pa RPMs apamwamba. Kutumiza kwasinthidwanso monga Yamaha adapanga njira yatsopano yodziwikiratu yomwe imalola wokwerayo kuti asunthe mwachangu komanso mosavuta. Kukhazikika kwa injini kunawongoleredwa posuntha mainframe pang'ono pamwamba pa ma pedals. Malugi omwe amangiriza injini ku chimango salinso aluminiyamu, koma chitsulo. Pofuna kuyendetsa bwino njinga, ma pedals ayikidwa mamilimita asanu kutsika ndipo ma dampers akonzedwanso. Monga injini ya 450cc, iyi ilinso ndi ma disks onyema muzinthu zina. Kuphatikiza pa luso lonse laukadaulo, njinga yamoto idalandira zithunzi zatsopano, zotchingira zidasintha pang'ono poyerekeza ndi chaka chatha, ndipo njinga yamoto imakongoletsedwa ndi zingwe zakuda ndi zida zagolide.
Tidakhala ndi mwayi woyesa mitundu ya YZ125, YZ250F, YZ450F ndi ma GYTR awo onse. Popeza injini za 125 ndi 450 cc. Cm sichinasinthe kuyambira chaka chatha, ndinapereka chidwi kwambiri pa njinga yamoto ya 250cc. Onani Choyamba, ndidawona mphamvu yayikulu yoperekedwa ndi injini. Poyerekeza ndi ena, ndinu achilendo, kotero muyenera kukhala owoneka bwino kuti muwete chilombo chabuluu ichi. Injiniyo ili ndi torque yayikulu kwambiri kuyambira pamunsi mpaka pa liwiro lalikulu. Chochititsa chidwi n'chakuti, pa ndege zazitali, mukamatsegula chitseko kwa nthawi yaitali, injini imakoka ndikuthamanga. Bicycle imakhalanso yowongoka kwambiri kuposa chaka chatha, zomwe ine ndekha ndimakhulupirira kuti zimayambitsidwa ndi ma pedals omwe amaikidwa m'munsi ndikupatsa wokwerayo kulamulira injini. Bokosi la gear limagwira ntchito bwino, nthawi yomweyo ndinazindikira kuti ngakhale pa ma revs apamwamba mukhoza kusintha popanda mavuto, zomwe ziri zabwino. Ndinkakonda kwambiri mabuleki popanda kusintha. Amapereka mabuleki apamwamba. Ma shock absorbers adasinthidwa kukhala mtundu wapakati ndipo amagwira ntchito bwino pakudumpha. Ndinkadumphira patali kwambiri ndipo zinthu zochititsa mantha zinkachita ntchito yabwino. Ndinasangalala kwambiri kuti njanjiyo inali yathyathyathya bwino, kotero ndinatha kusangalala nayo kwambiri, koma chifukwa cha izi, sindinathe kuyesa zowonongeka bwino ndikupanga maganizo awo.
Chinthu chabwino kwambiri, komabe, chinali chakuti ndinkakonda njinga za GYTR. Mphamvu zambiri ndi utsogoleri…. O, ponena za zimenezo m’nkhani yotsatira!
zolemba: Yaka Zavrshan, chithunzi: Yamaha
