I te ao o te keri maina, te hanga whare, me te keri kōhatu, i te wā e nui ake ai te pono i te uaua o ngā mahi hou, kei te noho tonu tētahi momo taputapu hau hei poutokomanawa mō ngā mahi o ia rā. Ko teYT28, YT27, meYT29Ahe raupapa o ngā wiri toka waewae hau, meTPB40, TPB60, meTPB90Ko ngā papa pakaru, e whakaatu ana i ngā tekau tau o te mahi kua whakamātauhia i roto i ngā taiao tino uaua. Ehara ēnei taputapu i te mea mō ngā hangarau whakahirahira; engari mō te whakaoti i te mahi, i ngā nekehanga i muri i ngā nekehanga, i roto i ngā āhuatanga ka whakararu i ngā taputapu ngoikore ake.

 

Kotahi te kaupapa matua o ngā keri toka raupapa-YT: te pakaru pai i te toka waenga ki te toka mārō. Ko tā rātou whakaaro hoahoa e aro ana ki te pānga kaha o te piston, te mahi tika o te waewae-hau, me te iti o ngā whakaritenga tiaki. Ka whakaratohia e te waewae-hau te kaha whāngai ōrite me te tautoko nui a te kaiwhakahaere, e taea ai te keri tika i ngā momo aronga. Ko te YT28 te mea e whakamahia ana mō te mahi taurite me te whai hua, ko te YT29A ia he kaha ake mō ngā hanganga tino wero, tino koi. Ko te tikanga o te mahi tahi ka taea te whakawhiti i ngā wāhanga e manawapa ana me te mōhiotanga whakahaere, ka whakaitihia te wā kore mahi me ngā utu whakangungu. I ngā wāhi keri kohatu tawhiti, i ngā kaupapa keri rua rānei kei reira ngā pūnaha waipēhi uaua e ngoikore ana, ka mahi tonu ēnei keri hau, ko tā rātou tangi motuhake e tohu ana i te ahunga whakamua tonu.

 

Hei tāpiri atu ki ēnei taputapu keri matua ko te raupapa TPB o ngā taputapu pakaru papa taumaha. Ko ngā tauira TPB40, TPB60, me TPB90 he rārangi katoa mō ngā mahi pakaru tuarua, te whakahoro, me te keri. Ko te TPB40, hei taputapu waenga-rahi, e tuku ana i te taurite pai o te kaha me te ngāwari ki te wawahi i ngā papa raima, ki te tango rānei i te taumaha. Ka eke te TPB60 ki ngā mahi kaha ake pēnei i te wawahi i ngā toka nunui, i te whenua tio rānei, ko te TPB90 ia te tino mana, ka taea te wawahi i ngā poraka toka nunui he nui rawa mō ngā taputapu kuru tuatahi. He mea nui tēnei tukanga pakaru tuarua, e kiia ana ko te "popcorning," hei pupuri i te rere pai o ngā rauemi mai i te mata o te rua kohatu ki te wheketere tukatuka.

 

Mā te mahi tahi i waenga i ngā keri YT me ngā pakaru TPB ka hangaia he rerenga mahi tino whai hua, motuhake hoki. Tuatahi, ka hangaia e ngā keri YT ngā kōhao pupuhi kua whakanohoia tika, ngā tauira keri rānei mō te wehewehe. Whai muri i te pupuhi, i te tangohanga tuatahi rānei, ka pakaru pai ngā toka me ngā kohatu nunui i te papaanga mā te whakamahi i ngā pakaru TPB. Mā tēnei ka whakakorea ngā aukati, ka whakaitihia te hiahia mō te pupuhi tuatahi anō, ā, ka noho tonu ngā taraka kawe. Ko te ataahua o tēnei pūnaha kei roto i tōna māmā me te hanganga tahi. Ka mahi ngā momo taputapu e rua i runga i te pēhanga hau ahumahi paerewa, ko te tikanga ka taea e te compressor kotahi, kaha te tautoko i te katoa o ngā keri me ngā pakaru.

 

Mō ngā kaiwhakahaere kaupapa me ngā kaiwhakahaere o te papaanga, ka tukuna e tēnei pūnaha he ngāwari mahi me te whakahaere utu tino pai. Mā te ngāwari o te miihini o ēnei taputapu ka taea te tiaki me te whakatika i te papaanga, ka karohia te tatari roa mō ngā tohunga hangarau. Hei tāpiri, he mea rongonui tō rātou pakari; ehara i te mea onge te kitea tonu o ngā wiri YT me ngā pakaru TPB kei te mahi tonu i muri i ngā tekau tau o te whakamahinga uaua. I roto i tētahi umanga e aro nui ana ki te utu katoa o te mana, ko te hītori kua whakamātauhia, me te pono pakari o ēnei taputapu hau ka whakarite kia noho tonu rātou hei wāhanga nui o te whenua keri me te hanga o te ao, e whakamana ana i ngā mahi e tautuhi ana i te pou tuarā o te whanaketanga hanganga.