Aruminiyamu iri kwese kwese uko kunenge kuri chimiro chakareruka kana kupisa kwakanyanya uye kufambisa magetsi. Sportbike yakajairika ine aruminiyamu cylinder block, head, uye crankcases, pamwe ne welded aruminiyamu chassis uye swingarm. Muinjini, chinhu chakakosha chinoshandiswa nearuminiyamu mapiston ayo, ayo nekuita kupisa zvakanaka anokwanisa kurarama nekupiswa kwakanyanya kupfuura nzvimbo yekunyunguduka kwawo. Mavhiri, ma coolant neoil radiator, hand levers nemabrackets awo, makorona eforogo epamusoro ne (kazhinji) epasi, machubhu eforogo epamusoro (muUSD forks), mabrake calipers, uye ma master cylinders zvakare iaruminiyamu.

Tose takatarisa tichiyemura chassis yearuminiyamu ine welds dzakafanana nedzakawa dzepoker chips. Zvimwe zvechassis ne swingarms idzi, dzakadai sedzemujaho weAprilia we2-stroke 250, mabasa ehunyanzvi akanaka.

Aruminiyamu inogona kusanganiswa uye kugadziriswa kupisa kusvika pasimba guru kupfuura resimbi isina simba (60,000 psi tensile), asi akawanda ma alloys anogadzirwa nekukurumidza uye nyore nyore. Aruminiyamu inogonawo kuumbwa, kugadzirwa, kana kuburitswa (ndiyo nzira iyo mamwe mativi e chassis anoitwa). Kupisa kwakanyanya kweAruminiyamu kunoita kuti welding yayo ide amperage yakawanda, uye simbi inopisa inofanira kudzivirirwa kubva kumhepo ine oxygen ne inert-gas shielding (TIG kana heli-arc).

Kunyange hazvo aruminiyamu ichida magetsi akawanda kuti iwane dombo rayo re bauxite, kana yavapo muchimiro chesimbi, inodhura zvishoma kudzokorodza uye hairasikirwi nengura, sezvinoita simbi.

Vagadziri vekare vemainjini emudhudhudhu vakakurumidza kushandisa simbi itsva iyoyo yekuisa mumacrankcases, ayo angadai aifanira kunge ari esimbi yakakandwa inorema zvakapetwa katatu. Aruminiyamu chaiyo yakapfava zvikuru—ndinoyeuka hasha dzaamai vangu pavakashandisa baba vangu 1,100-alloy double-boiler yavo seBB trap yakagadzirwa: Pasi payo pakava nemadimples akawanda.

Simba rakawedzerwa resimbi yakapfava ine mhangura rakakurumidza kuwanikwa, uye raive simbi yakashandiswa neWo Bentley mukugadzira mapiston ake ealuminium asati asvika Hondo Yenyika I. Mukuedza kwake kwakateverana nemapiston esimbi aishandiswa panguva iyoyo, mapiston ealuminium ekutanga aBentley akawedzera simba. Aitonhora zvishoma, aipisa musanganiswa wemafuta nemhepo, uye aichengetedza huwandu hwawo. Nhasi, mapiston ealuminium anoshandiswa zvakanyanya muinjini dzemotokari nedzemudhudhudhu.

Kusvika pakuuya kwendege yeBoeing ine carbon-fiber yakasimbiswa-plastic 787, yaive chokwadi chekufamba nendege kuti huremu hwendege yega yega hwaive 60 muzana yearuminiyamu. Tichitarisa huremu nesimba rearuminiyamu nesimbi, izvi pakutanga zvinoita sezvisinganzwisisike. Ehe, aruminiyamu inorema 35 muzana chete kupfuura simbi, huwandu nehukuru, asi simbi dzine simba rakawanda dzakasimba zvakapetwa katatu kupfuura aruminiyamu dzine simba rakawanda. Sei tisingagadzire ndege nesimbi yakatetepa?

Zvakazoguma nekuramba kusungwa kwezvimiro zvakaenzana zvearuminiyamu nesimbi. Kana tikatanga nemachubhu earuminiyamu nesimbi ane huremu hwakaenzana patsoka imwe neimwe, uye tikaderedza ukobvu hwemadziro, chubhu yesimbi inotanga kusungwa nekuti chinhu chayo, icho chiri chikamu chimwe chete muzvitatu cheukobvu searuminiyamu, hachina simba rakawanda rekuzvitsigira.

Mumakore ekuma1970, ndakashanda nemugadziri wemafuremu Frank Camillieri. Pandakamubvunza kuti sei tisina kushandisa machubhu esimbi akakura emadziro akatetepa kuti tigadzire mafuremu akareruka uye akaomarara, akati, “Paunoita izvozvo, unoona kuti unofanira kuwedzera zvinhu zvakawanda pazvinhu zvakaita semainjini kuti zvisatsemuke, kuitira kuti kuchengetedza huremu kupere.”

Kawasaki yakatanga kushandisa simbi dzesimbi dzealuminium pamabhasikoro ayo eMX emufekitori kutanga kwema1970; dzimwe dzakateverawo. Zvadaro muna 1980, Yamaha yakaisa Kenny Roberts pabhasikoro reGP rine 500 two-stroke rine furemu yakagadzirwa nechubhu yealuminium yakaburitswa nemativi mana. Kuedza kwakawanda kwaidiwa, asi pakupedzisira, vachishandisa mazano einjiniya wekuSpain Antonio Cobas, mafuremu emujaho weGP weYamaha akashanduka kuita simbi huru dzealuminium dzakajairika dzemazuva ano.

Zvechokwadi kune mamwe marudzi echassis akabudirira—chassis yesimbi yaDucati inonzi “trellis”, uye chassis yecarbon-fiber yaJohn Britten inonzi “skin and bones” yekutanga kwema1990. Asi chassis yesimbi yealuminium yave kushandiswa mazuva ano. Ndine chivimbo chekuti chassis inoshanda inogona kugadzirwa neplywood yakaumbwa, chero bedzi iine nzvimbo dzakasimba dzemabhomba uye geometry yakajairika.

Mumwe musiyano mukuru pakati pesimbi nearuminiyamu ndewekuti simbi ine chinonzi muganho wekuneta: mwero wekushushikana kwekushanda uri pasi payo uyo hupenyu hwechikamu chacho husingaverengeki. Mazhinji earuminiyamu haana muganho wekuneta, ndosaka ma airframe earuminiyamu "achigara" kwenguva yakatarwa yekushandiswa kwemaawa akawanda. Pasi pemuganho uyu, simbi inotikanganwira zvikanganiso zvedu, asi aruminiyamu inoyeuka kutuka kwese muchimiro chekukuvadzwa kwemukati kusingaonekwe kwekuneta.

Chassis yakanaka yeGP yemakore ekuma1990 yaisambogona kuva hwaro hwekugadzirwa kwezvinhu zvakawanda. Chassis iyoyo yaisanganisira zvidimbu zvakasungirirwa pamwe chete kubva muzvinhu zvakagadzirwa nemuchina, zvakadzvanywa, uye zvakaumbwa nearuminiyamu. Hazvisi izvo chete zvakaoma, asi zvinoda kuti ma alloys ese matatu akwanise kusunganidzwa. Kusonera kunodhura mari nenguva, kunyangwe zvichiitwa nemarobhoti ekugadzira.

Tekinoroji yaita kuti mainjini emazuva ano ane mastroke mana akareruka uye chassis yekukanda ikwanise kushandiswa inzira dzekuzadza mold dzine turbulence shoma dzisingapindi mafirimu ealuminium oxide anoumbwa pakarepo paaruminiyamu yakanyungudutswa. Mafirimu akadaro anoumba nzvimbo dzisina simba musimbi, izvo kare zvaida kuti castings dzive dzakakora kuti dziwane simba rakakwana. Zvikamu zvekukanda kubva mumaitiro matsva aya zvinogona kunge zvakaoma, asi chassis yearuminiyamu yanhasi inogona kuunganidzwa ne welds dzinoverengeka kune rumwe rutivi. Zvinofungidzirwa kuti nzira itsva dzekukanda dzinochengetedza huremu hwemakirogiramu makumi matatu kana kupfuura mumidhudhudhu yekugadzira.

Pamwe chete nesimbi dzakasiyana-siyana, aruminiyamu ibasa guru revanhu, asi zvinopfuura izvozvo kune midhudhudhu yemazuva ano. Ndiyo nyama yebhasikoro, inowanikwa kwose kwose zvekuti hatinyatsoioni kana kuziva kuti muchina wacho unoita basa rakawanda sei.