Aia ka alumini ma nā wahi a pau e koi ʻia ai ke ʻano māmā a i ʻole ka wela wela a me ka conductivity uila. ʻO ka sportbike maʻamau he pahu pahu aluminika, ke poʻo, a me nā pahu pahu, me kahi chassis alumini welded a me ka swingarm. I loko o ka ʻenekini, ʻo ka noi alumini koʻikoʻi kona mau pistons, ma ka lawe ʻana i ka wela me ka maikaʻi e hiki ai ke ola i ka ʻike ʻana i nā mahana wela ma luna o ko lākou wahi hoʻoheheʻe. ʻO nā huila, ka mea hoʻomaʻamaʻa a me ka aila radiators, nā lima lima a me ko lākou mau pale, nā lei aliʻi o luna a me lalo (pinepine), nā paipu o luna (ma nā ʻāpana USD), nā calipers a me nā cylinders haku he alumini like.

Ua nānā mākou a pau me ka mahalo i kahi chassis aluminika nona nā welds e like me ka hāʻule hāʻule ʻana o nā ʻāpana poker. ʻO kekahi o kēia mau chassis a me swingarms, e like me nā mea hoʻokūkū ʻelua-stroke 250 o Aprilia, he mau hana noʻeau maikaʻi.

Hiki ke hoʻopili ʻia ka alumini a hoʻomaʻamaʻa ʻia i ka ikaika i ʻoi aku ka ikaika ma mua o ke kila māmā (60,000 psi tensile), akā ʻo ka hapa nui o nā mīkini alloys me ka wikiwiki a maʻalahi. Hiki ke hoʻolei ʻia ka alumini, hana ʻia, a hoʻokuʻu ʻia paha (ʻo ia ke ʻano o ka hana ʻana i nā ʻaoʻao chassis). ʻO ka hoʻoili wela kiʻekiʻe o Aluminum e koi ai i ka nui o ka amperage, a pono e pale ʻia ka metala wela mai ka oxygen ea e ka pale kino kinoea (TIG a i ʻole heli-arc).

ʻOiai ke koi nei ka aluminika i ka nui o ka uila e lanakila ai mai kāna ʻaila bauxite, ke loaʻa iā ia ma ke ʻano metala, liʻiliʻi ke kumukūʻai no ka hana hou ʻana a ʻaʻole nalowale i ka pala, ʻoiai ke kila.

ʻO nā mea hana mua o nā ʻenekini kaʻa kaʻa i lawe koke i ka metala hou no nā pahu crankcases, inā ʻaʻole paha he hao hoʻoheheʻe ʻia ʻoi aku ka nui o ke kaumaha. He palupalu loa ka alumini maʻemaʻe—Ke hoʻomanaʻo nei au i ka huhū o koʻu makuahine i ka hoʻohana ʻana o koʻu makuakāne i kāna paila pālua 1,100-alloy ma ke ʻano he pahele BB i hana ʻia: Ua lilo kona lalo i mau dimples.

Ua ʻike koke ʻia ka ikaika hoʻonui o kahi huila maʻalahi me ke keleawe, a ʻo ia ka mea i hoʻohana ʻia e ka paionia kaʻa ʻo WO Bentley i kāna mau piston alumini hoʻokolohua ma mua o ke Kaua Honua I. I ka hoʻāʻo ʻana i hope i nā pistons hao i mana nui, ua hoʻoikaika koke nā piston alumini hoʻāʻo mua a Bentley i ka mana. Ua holo mālie lākou, hoʻomāmā i ka hui ʻana o ka wahie-ea e komo mai ana, a mālama ʻia ka nui o kona mānoanoa. I kēia lā, hoʻohana ʻia nā piston alumini i nā ʻenekini kaʻa a me nā kaʻa.

A hiki i ka hiki ʻana mai o ka mokulele mokulele 787 i hoʻoikaika ʻia i ka carbon fiber i hoʻoikaika ʻia-plastic, he ʻoiaʻiʻo maoli o ka lele ʻana ʻaneʻi o kēlā me kēia mokulele mokulele he 60 pakeneka alumini. Ke nānā nei i nā paona pili a me nā ikaika o ka alumini a me ke kila, he mea ʻē kēia i ka wā mua. ʻAe, he 35 pakeneka wale nō ke kaumaha o ka alumini e like me ke kila, ka leo no ka leo, akā ʻoi aku ka ikaika o nā kila ikaika kiʻekiʻe ma mua o ʻekolu mau manawa ma mua o nā alumini ikaika. No ke aha e hana ʻole ai i nā mokulele mai ke kila lahilahi?

Ua hele mai i lalo i ke kū'ē i ka buckling o nā hale like o ka alumini a me ke kila. Inā mākou e hoʻomaka me ka aluminika a me ke kila paipu o ke kaumaha hoʻokahi no ka wāwae, a hoʻemi mākou i ka mānoanoa o ka pā, ʻoi aku ka mua o ka paipu kila no ka mea ʻo kāna mea, ʻo ka hapakolu wale nō ka mānoanoa e like me ka alumini, ʻoi aku ka emi o ka hiki ke hoʻopaʻa pono iā ia iho.

I ka makahiki 1970, ua hana au me ka mea kūkulu hale ʻo Frank Camillieri. I koʻu nīnau ʻana iā ia no ke aha mākou i hoʻohana ʻole ai i nā paipu kila ʻoi aku ka nui o ka paia ʻoi aku ka lahilahi e hana i nā papa māmā a ʻoi aku ka paʻakikī, ʻōlelo ʻo ia, "Ke hana ʻoe i kēlā, ʻike ʻoe he pono ʻoe e hoʻohui i kahi pūʻulu mea i nā mea e like me ke kau ʻana o ka mīkini. e mālama iā lākou mai ka haki ʻana, i nalowale ke kaumaha.

Ua hoʻohana mua ʻo Kawasaki i nā swingarms alumini ma kāna hale hana paʻa MX i nā makahiki 1970 mua; ua hahai nā mea ʻē aʻe. A laila i ka makahiki 1980, ua kau ʻo Yamaha iā Kenny Roberts ma ke kaʻa GP 500 ʻelua-stroke nona ke kiʻi i hana ʻia mai ka pahu alumini extruded ʻāpana ʻāpana. Pono ka nui o nā hoʻokolohua hoʻolālā, akā i ka hopena, me ka hoʻohana ʻana i nā manaʻo o ka ʻenekinia Spanish ʻo Antonio Cobas, ua ulu aʻe nā kime alanui GP o Yamaha i nā kaola alumini māhoe nui o kēia mau lā.

ʻOiaʻiʻo, aia nā chassis kūleʻa o nā ʻano ʻē aʻe—ʻo Ducati's steel-tube “trellis” no hoʻokahi, a me John Britten "ʻili a me nā iwi" carbon-fiber chassis o nā makahiki 1990. Akā ua lilo nā chassis beam māhoe māhoe i poʻokela i kēia lā. Manaʻo wau e hiki ke hana ʻia kahi chassis me ka plywood i hoʻoheheʻe ʻia, inā loaʻa iā ia nā wahi bolting lōʻihi a me ka geometry hōʻoia maʻamau.

ʻO kekahi ʻokoʻa koʻikoʻi ma waena o ke kila a me ka alumini, ʻo ia ka mea i kapa ʻia he palena luhi: kahi pae koʻikoʻi hana ma lalo o ke ola ʻana o ka ʻāpana i ka palena ʻole. ʻO ka hapa nui o nā alumini alumini ʻaʻohe palena luhi, ʻo ia ke kumu e "ola" ai nā pahu ea alumini no ka helu o nā hola i hoʻolālā ʻia. Ma lalo o kēia palena, kala mai ke kila iā mākou i kā mākou mau hewa, akā hoʻomanaʻo ka alumini i nā ʻōlelo hōʻino a pau i ke ʻano o ka pōʻino o loko.

ʻO ka chassis GP nani o nā 1990s ʻaʻole hiki ke lilo i kumu no ka hana nui. ʻO kēlā mau chassis he mau ʻāpana i hui pū ʻia mai nā mea mīkini, kaomi, a me nā mea hoʻolei alumini. ʻAʻole ʻo ia wale nō ka paʻakikī, akā pono ia e hoʻopaʻa ʻia nā ʻekolu a pau. ʻO ka welding ke kālā a me ka manawa, ʻoiai inā hana ʻia e nā robots hana.

ʻO ka ʻenehana i hana i nā ʻenekini ʻehā-stroke māmā o kēia lā a me nā chassis hoʻolei i hiki ke hiki ke hoʻopiha ʻia i nā ʻano hana hoʻopihapiha haʻahaʻa haʻahaʻa ʻaʻole e komo i nā kiʻiʻoniʻoni o ka alumini oxide i hana koke ʻia ma luna o ka alumini hoʻoheheʻe. ʻO ia mau kiʻiʻoniʻoni e hana i nā ʻāpana nāwaliwali o ka metala, i ka wā ma mua, koi ʻia nā hoʻoheheʻe ʻana e ʻoi aku ka mānoanoa e loaʻa ai ka ikaika kūpono. Hiki i nā ʻāpana hoʻolei mai kēia mau kaʻina hana hou ke paʻakikī, akā hiki ke hoʻohui ʻia nā chassis alumini o kēia lā me nā welds i helu ʻia ma ka lima hoʻokahi. Ua manaʻo ʻia ʻo nā ʻano hoʻoheheʻe hou e mālama i 30 a ʻoi aku paha paona o ke kaumaha i nā kaʻa kaʻa.

Me nā ʻano kila like ʻole, ʻo ka alumini ka mea hana maʻamau o ka moʻomeheu kanaka, akā ʻoi aku ia ma mua o kēlā no nā kaʻa kaʻa hou. ʻO ia ka ʻiʻo o ke kaʻa kaʻa, ʻike ʻole ʻia a ʻike ʻole paha i ka nui o ka hana a ka mīkini iā ​​mākou.