Hoʻokahi pahu: mahalo no ka maʻalahi

I ka hoʻomaka ʻana, he cylinder hoʻokahi ke kaʻa, maʻalahi a paʻa. Kau ʻia ma luna o nā mīkini lahilahi a me ka māmā, ua hana ʻo ia i ka moʻolelo me BSA Gold Stars, Norton Manx ... a me Yamaha 500 XT ... Akā i nā makahiki i nīnau ʻia e nā mea holo kaʻa i kā lākou mau mauna a ua lawe ka mono.

Heihei kaua

ʻO kēia KTM 450 cylinder poʻo iā ia iho e hōʻike i ka compactness o kahi cylinder hoʻokahi a wehewehe i kona māmā.

Ke neʻe nei ke ʻano kūlohelohe o nā kaʻa kaʻa hou i ka hōʻoluʻolu, ʻoi aku ka wikiwiki, ʻoi aku ka hilinaʻi. ʻO nā wahi ʻaʻole pono o ka mono. ʻOiaʻiʻo, ʻaʻohe kaulike i ke ʻano a me ka hāʻawi ʻana i ka maʻamau cyclical maikaʻi ʻole, paʻakikī ia i nā revs haʻahaʻa, a loaʻa iā ia ka inoa inoa "Tuper" (he cogner ma ka ʻōlelo a Shakespeare). Eia kekahi, i ka ʻimi ʻana i ka hana, ua lohi ka cylinder. He kūpono ia, no ka mea e hoʻonui i ka mana, hiki iā ʻoe ke hoʻonui i ka neʻe ʻana a i ʻole ka wikiwiki o ka mīkini. Ma nā hihia ʻelua, ʻae ʻo ia i kāna mau palena. Inā piʻi ka neʻe ʻana, nui ka piston, no laila ke kaumaha. ʻO kaʻoiaʻiʻo, hoʻonui ka ikaika o ka inertia e hoʻoulu ai i ka lole a me ka haʻalulu i ka manawa like. ʻO ka pilikia like inā e hoʻāʻo nei mākou e hōʻea i nā wikiwiki kiʻekiʻe, no ka mea, ke ulu nei nā mana inertial ma ka square o ka wikiwiki, ke alo nei mākou i nā pilikia like o ka haki, ʻaʻahu a me ka haʻalulu…. No laila, pono e kaupalena ʻia ka mono i nā pūʻali waena, me ka hiki ʻole ke hoʻohālike e wāwahi i nā moʻolelo…. ʻO ka ʻoiaʻiʻo, ʻo kāna lanakila hope loa o ka Pelekikena Nui ma 1969. ʻO Norton Mans ia, a ua ua ka heihei. A laila ua hoʻololi hope ʻia nā pahu-nui, 2 a me 4.

Ma hope o ke kaua, ʻo ka ʻōlelo Pelekania hoʻokahi kiʻekiʻe kiʻekiʻe ka mea kaua i koho ʻia no nā pailaka pilikino i makemake e pakele. Eia nō naʻe, pono lākou e hoʻololi i nā kiʻi i ka hopena o 1960s i mua o ka holomua ʻana i ʻelua-stroke a me multi-cylinder. Eia ka Matchless G 50: He mea hoʻokūkū ia no Norton Manx. Ua hōʻike ʻia kahi mīkini ACT maʻalahi.

Ke noʻonoʻo hou nei ʻo Yamaha i ka gromono

He kaao wau. ACT hoʻokahi ea hoʻoluʻu 2 valve engine, hoʻomaka haʻalulu a me nā pahu pahu. ʻO ka 500 XT ka mea kū'ē i ka holomua, akā e lilo ia i mea paʻi. Na ia e hoihoi aku i ka hekili.

Eia nō naʻe, i ka makahiki 1976 ua hoʻoponopono hou ʻo Yamaha i kēia ʻenehana, ʻike ʻia kahi ʻano kūpono kūpono: Cross Country Running. Hoʻohui ʻia, hoʻokele waiwai, piha i ke ʻano, ʻo ka cylinder hoʻokahi ka kūleʻa honua o ka 500 XT. Ua hahai koke ka hoʻokūkū, a ua lawe ka hanana i nā ʻano like ʻole me ka hoʻomohala ʻana o ka Paris Dakar. A laila, lilo ke ala hoʻokahi-cylinder i hōʻailona o ke kūʻokoʻa, ka huakaʻi a me ka pakele. Aia mākou i ka wanaʻao o ka makahiki 1980. Akā, hāʻule ka mōʻaukala i ka wā e heihei ai ʻo BMW me kāna māhoe pālahalaha kaulana. ʻOiai kāna mau hoʻoikaika ʻana, hoʻonui i ka neʻe ʻana, hoʻonui i nā valves, pālua ACT, a me nā mea ʻē aʻe, ʻaʻole hiki i ka mono ke kū i ka nalu multi-cylinder. Ke hele nei i ke ala no ka asphalt, kūlou ʻo ia i nā ala one. Ua make loa? ʻOiaʻiʻo, ʻaʻole, ʻo ka cylinder hoʻokahi he ʻano hana rustic hiki ke pale aku i ka hana ʻino. No laila, e hānau hou ʻia ʻo ia mai kona lehu, e like me ka Phoenix.

ʻO ka pā kaua hope, nā kaua hope loa

E hoʻi i Grace: ʻO ka hoʻohana ʻana i ka ʻenehana heihei i hiki ai i nā monos ke hoʻi i ka ikaika a lanakila i nā manawa ʻelua ma ke ʻano o ka hoʻohālikelike ʻana. ʻO ka TT kahi wale nō kahi e loaʻa ai nā cylinders hoʻokahi Hi-Tech. Eia ka ʻaoʻao ʻaoʻao ʻo Yamaha 450 māhoe ACT Yamaha XNUMX cylinder head a me ka injection.

I kēia manawa ʻo kahi SUV maʻemaʻe a paʻakikī wale nō ke koho. Ma ʻaneʻi, ʻo ke kaumaha a me ka compactness nā ʻano koʻikoʻi i ʻoi aku ma mua o ka ikaika maʻemaʻe. ʻAʻole hiki ke hele i hoʻokahi haneli a ʻoi aʻe paha nā lio ma nā ʻāina lepo lepo i piha i nā ʻōpala. ʻAʻole hiki ke hana maikaʻi me kahi mīkini e kaupaona ana ma kahi o 200 kg. ʻAʻohe wahi no ka multi-cylinder (akā). Akā a hiki i kēia manawa, ʻaʻole hiki i kahi mono 4-stroke ke hakakā me kahi 2-stroke me ka neʻe like. Akā i ka wā e hoʻopaʻa ai i nā kūlana hoʻomalu haumia e hoʻokuke i ka pahu huki a hiki i ka puka (me ka ikaika, e hoʻihoʻi hou ka mōʻaukala iā ia iho!), Ke kau nei ia iā ia iho. Ma ka makemake o ka ne'e 'ana like o 125 2 bits / 250 4 hahau a me 250 2 bits 450 4 hahau, ike makou i ka hanau ana o ka ano hou o ka medium displacement single cylinders i ikaika, mama a maikai. ʻAʻole hiki ke helu ʻia kēia hanauna hou o nā cylinders hoʻokahi kiʻekiʻe. ʻElua ACT, 4 titanium valves, wai anuanu, forged pistons ... ʻoi aku lākou ma mua o 100 hp. a mālama i ka wikiwiki ma kahi o 13000 rpm ma 250 !!!

Ke nānā hou nei kēia ʻano mutant i ka asphalt ma muli o ke ʻano supermodern, me ka manaʻo hoʻokahi e kiʻi hou i kēia ʻāina. Mono paakiki!

ʻO ka mea hana Austrian ʻo KTM ka mea ʻoi loa ka pale pale hoʻokahi-cylinder ma ke alanui. ʻO ka hana a me ka hilinaʻi o kāna 690 he mea kupaianaha no kahi mono. Eia ka ʻenekini 500 EXC.

Pahu: 2 bits

ʻO ka puʻupuʻu ikaika, māmā, maʻalahi, 2-stroke single cylinder kona mau hola ma waho o ke alanui.

ʻO ka evolution hou o ka pollution control standard ua disqualified ia, akā, ʻaʻole i loaʻa iā ia kāna ʻōlelo hope ... ʻaʻole pono nā pailaka TT i koho i nā ʻenekini valve i hoʻohui a ʻeli paha i nā koina hana hou e alakaʻi ai i kēia. ʻO nā ʻenekini paʻakikī e holo wikiwiki ana, e koi ana i ka mālama mau ʻana (nā mākaʻikaʻi hoʻomaʻemaʻe valve, ke kaulahao hoʻohele, nā lole kiʻekiʻe o nā pahu titanium me ka lepo ...). He pipiʻi kēia a pau ... Ke hoʻomaka nei kekahi e noʻonoʻo i ka hopena, nā cylinders me nā lua ... ʻAʻole maikaʻi loa!