Zaɓin Madaidaicin Hannun Hannu (Handlebar) don Ingantaccen Bike na Dutsen
Mahimman kayan haɗi don hawan keke, sanduna (ko sanduna) suna zuwa cikin sifofi iri-iri kuma suna da halaye da yawa don yin la'akari da su yayin hawan ba tare da wani abin mamaki ba.
Hangers sun zo da nau'ikan diamita, tsayi, siffofi, kuma an yi su ne daga abubuwa iri-iri, galibi aluminum ko carbon. Hannun Aluminum yawanci mafi arha, amma kuma sun fi nauyi. Wadannan nau'ikan kayan daban-daban suna da halaye na musamman ga kowannensu, don haka yana da wuya a sami bayanai masu ƙarfi. A daya bangaren kuma, idan ana maganar lissafi, dole ne a yi la’akari da wasu sigogi.
Shi ya sa a lokacin da ake binciken rudder geometry, dole ne ka yi la'akari da yawa dabi'u, ciki har da "taga", "share" ("taso up" da "reverse"), diamita. da fadin (tsawon).
fitowar rana"
"Tashi" shine ainihin bambancin tsayi tsakanin tsakiyar bututun inda ya haɗa zuwa kara da kasan ƙarshen kawai bayan taper da madaidaicin canji.
MTB handbars yawanci suna da "ɗagawa" daga 0 ("lebur mashaya") zuwa 100 mm (4 in).
Hannun hawan hawan mm 100 sun daina zama gama gari, kuma a zamanin yau manyan sanduna masu tsayi suna yawanci 40 zuwa 50 mm (1,5 zuwa 2 inci).
"Lift" yana rinjayar matsayi na matukin jirgi. Idan matsayi ya yi ƙasa sosai (ga mai tsayi mai tsayi, alal misali), "tashi" mafi girma zai iya taimakawa wajen shiga matsayi mafi dacewa. Hakanan yana da kyau a yi amfani da sandar hannu tare da "ɗagawa" mafi girma maimakon ƙara shims (ko "spacer") a ƙarƙashin tushe don ɗaga shi don ɗaukar mahayin da ya fi tsayi saboda ba zai haifar da mummunar tasiri ba. .
Hannun “tashi” zai zama ɗan sassauƙa fiye da madaidaicin madaidaicin, matuƙar an yi sandunan biyu daga abu ɗaya kuma diamita da faɗi ɗaya ne. An bayyana wannan ta gaskiyar cewa a cikin cikakkiyar tsayi (idan kun juya shi a cikin bututu madaidaiciya), motar motar tare da "ɗagawa" zai fi tsayi fiye da "sanda mai lebur".
Fitattun sanduna galibi suna shahara akan kekunan XC yayin da ake amfani da sandunan “tashi” akan kekuna masu karkata zuwa ƙasa. Saboda an inganta kekuna na ƙasa don gudu na ƙasa, haɓaka mafi girma yana riƙe kan mahayin da juzu'in ɗanɗano sama, yana ba da damar ingantaccen sarrafawa.
"Dagawa" kuma zai ɗan yi tasiri akan rarraba nauyi akan babur. Yayin da lebur mashaya yana sanya ƙarin damuwa akan dabaran gaba, haɓaka ƙarfin hawan hawa, babban mashaya "ɗagawa" yana daidaita mahayin kuma yana matsar da tsakiyar nauyi a baya, dawo da matsayi da inganci akan zuriya.
"Tashi"
"Up" yayi daidai da karkatar da sitiyari a tsaye a matakin iyawa. "Swing up" yana rinjayar gaba ɗaya "ɗagawa" na sandar, amma ma'auni ne da aka tsara da farko don jin daɗin mahayin fiye da kowane abu. Yawancin rudders suna da kusurwar juyawa zuwa sama na 4° zuwa 6°. Wannan kusurwar ta yi daidai da matsayin tsaka-tsakin wuyan hannu ga yawancin mutane.
Juya baya
"Swing back" yayi daidai da kwanar da sitiyarin ke komawa ga direba.
Wannan kusurwa na iya bambanta daga 0° zuwa 12°. Bugu da ƙari, "jigon baya" yana nufin ta'aziyyar hannun mahayi da fifiko akan duk sauran la'akari da aikin. Yawancin madaidaitan kekuna suna da sanduna masu juya baya 9°. Wannan yana nufin cewa tukwici na madaidaicin suna matsawa kaɗan, yana ba ku damar amfani da tsayi mai tsayi ko gajere, saboda gaba ɗaya isar yana da kyau. Wasu ƙungiyoyin MTB sun yi gwaji tare da 12° juyi juyi sanduna, saboda wannan ya basu damar amfani da sanduna masu faɗi ba tare da sanya ƙarin damuwa akan kafaɗunsu da hannayensu ba.
Idan ka sanya hannunka a gabanka, duba yadda hannunka (yatsunsu a rufe) yake a zahiri. Za ku ga cewa kusurwar hannun gaban ku ba zai zama digiri 90 ba. Ƙirar abin hannu da gaske tana ƙoƙarin yin kwafin wannan matsayi na hannun lokacin da kake riƙe da sandunan. Tazarar da ke tsakanin abin hannu da jikinka yana ƙayyade kusurwar da wuyan hannu ya kai hari kan sandar. Hakanan ya kamata ku yi la'akari da faɗin. Da yawan haɗuwar hannayenku (gajerun sanduna), mafi girman kusurwar sha'awar su zai kasance, kuma, akasin haka, yayin da suke nesa da juna, mafi girman kusurwar wuyan hannu. Sabili da haka, yana da mahimmanci a yi la'akari da nisa na kafadu lokacin zabar nau'in kullun don samun matsayi na hawan yanayi.
Don haka, dole ne a yi la'akari da dawowar abin hannu yayin sanya mai keken keke.
Misali, idan kana da madaidaicin 720mm tare da kusurwar baya 9° kuma ka canza zuwa sabon sandar mai faɗi ɗaya amma tare da juyowar baya 6°, to hannun rigar zai kasance mai faɗi saboda gaɓoɓin za su ragu karkata zuwa baya. sannan matsayin wuyan hannu zai canza. . Ana iya gyara wannan ta hanyar zabar guntun kara. Don haka, bugun jini na dawowa zai iya zama kai tsaye da alaƙa da tsayin sandarka yayin sanyawa.
Diamita
Tutiya na iya zama diamita da yawa. Akwai manyan diamita guda biyu a yau: 31,8mm (mafi yawan na kowa) da 35mm (mai saurin fitowa). Waɗannan lambobin suna wakiltar diamita na tsakiyar sandal ɗin inda aka maƙala tushe zuwa. Manyan sandunan diamita suna da ƙarfi da ƙarfi. Babban diamita kuma yana ba da damar babban wurin tuntuɓar tushe, don haka rage matsi da ake buƙata. Wannan yanayin yana da mahimmanci musamman ga sandunan hannu.
Tsawon Nisa)
Faɗin Handlebar shine kashi wanda ya fi tasiri kai tsaye akan tafiya. Wannan ita ce jimlar nisa da aka auna daga dama zuwa hagu daga iyakar. Hannun hannu na yau sun bambanta daga 710mm zuwa 800mm. Faɗin abin hannu yana rage hazakar tuƙi kuma yana haɓaka kwanciyar hankali lokacin yin kusurwa a babban gudu. Hakanan yana sauƙaƙa numfashi yayin ɗagawa. Faɗin abin hannu ba lallai ba ne, dole ne ka yi la'akari da kwanciyar hankali, matsayi da tsayin tushe.
Hanya mai sauƙi don gano faɗin dabi'ar ku shine ɗaukar matsayi na "turawa" a ƙasa kuma auna nisa tsakanin tukwici na hannayenku biyu. Wannan hanyar tana ba ku kyakkyawan wurin farawa don zaɓar madaidaicin madaidaicin madaidaicin girman girman ku.
Har yanzu wuyan hannu yana ciwo?
Ciwon tsoka da haɗin gwiwa duk sau da yawa yana shiga cikin hanyar jin daɗi. Don gyara matsayi da kuma mayar da ta'aziyya, an yi amfani da hannayen hannu tare da goyon bayan biomechanical wanda ya fi dacewa da kayan aiki na al'ada.
