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>   Topic: [Equip] 請問曲柄長度的選擇   10 Replies    11014 Views   
btt
  請問曲柄長度的選擇
  Author: Park     Post Time: 2011/03/21
   
 Topic 
側跳練習的時候,踏板剛好卡著石縫,曲柄就這樣弄滑牙。
原廠曲柄的長度是165mm,而大部份的after market曲柄是160(小車)和170(大車)。
請問我買160mm來做replacement會不會有問題?
謝謝!
btt
  RE: 請問曲柄長度的選擇
  Replier: mark     Reply Time: 2011/03/21
   
Monty 小攀原廠的曲柄是 158mm, 其他廠大多是 160mm, 大攀則是用 170mm, 反而 165mm 是很奇特的規格, 因此改用160mm 應該是很OK的.
btt
  RE: 請問曲柄長度的選擇
  Replier: Park     Reply Time: 2011/03/21
   
謝謝馬克。
btt
  RE: 請問曲柄長度的選擇
  Replier: Kevin     Reply Time: 2011/03/22
   
try to get your pedal threads heli-coiled. This is done by drilling a larger diameter hole in place of the original one, tapping the hole with a reverse thread, and adding a steel insert. You should be able to call around some machine shops to help you do this :) I got mine done for $10 and a 6 pack of beer ;)
btt
  RE: 請問曲柄長度的選擇
  Replier: Park     Reply Time: 2011/03/22
   
Quote Kevin article-
try to get your pedal threads heli-coiled. This is done b...

Great tip:)!!! Will try to check that out locally.
I thought we would meet up at the bikeshow comp in Toronto. Don't know why they didn't have that trial section this year. Hope it will happen again next year. I'm not yet good enough to come riding in Vancouver :(.
btt
  RE: 請問曲柄長度的選擇
  Replier: 老K     Reply Time: 2011/03/22
   
如果在台灣絕對是換新比""重工""修復來得便宜!!不過重新攻牙修復損壞是個很好的建議!!環保愛地球。
btt
  RE: 請問曲柄長度的選擇
  Replier: Kevin     Reply Time: 2011/03/22
   
Quote Park article-

Great tip:)!!! Will try to check that out locally.
I tho...
yea there wasn't a meta booth or indoor competition this year. I'll probably be out that way later this year :)
btt
  RE: 請問曲柄長度的選擇
  Replier: Kevin     Reply Time: 2011/03/22
   
2011/03/22, user kevinliu has made number 1 times of modification
Let me ask for you to see if anyone I know can help you fix it over there. is it the drive side or the non-drive side?
btt
  RE: 請問曲柄長度的選擇
  Replier: Park     Reply Time: 2011/03/22
   
Quote Kevin article-
Let me ask for you to see if anyone I know can help you f...

That's fine for me, thanks.
I know a guy and he used to custom made some machine parts for my other hobby. I think he can help me for this. I will try to fix that stripped crank as for my spare part cause I got a good deal from Hugo, HB Trials, for a used set of the original Meta 165mm crank. This could save my time to replace only the stripped side and also have a spare for the other side.
Couple months ago, I met JK, Trevor, Carsinn and some other Ontario great riders at Joyride
bike park. It was nice to see all tricks & moves in person. Hope to ride with them more this summer.
btt
  RE: 請問曲柄長度的選擇
  Replier: Park     Reply Time: 2011/03/23
   
關於曲柄滑牙的問題,凱文在上面介紹了一個很好的補救方法,就是重新攻牙後再裝上牙套。剛找上當機械技師的朋友答應幫忙修補,他說大部份機械店也會有這套工具,就是凱文提到的Heli-coil。如果剛買那套工具來修補的話,就是會長講的不化算,買新的更省錢省時間。但是滑牙是發生車在架殺車的掣動位置的話,可能是找人幫助比較化算?在網路上找到有關用牙套來修補滑牙車架的影片給各位大大參考參考。

http://www.youtube.com/watch?v=q6frhSsq06E&feature=youtube_gdata_player  Like(1)+ expand- fold
btt
  RE: 請問曲柄長度的選擇
  Replier: 老K     Reply Time: 2011/03/23
   
有時人算不如天算(天時與地利),但是藉著維修與蒐集機械常識資料也能從因損壞而失望中多多少少""賺""點回來...有失必有得;有得必有失!!幾千年前的人就知道了...
Park大貼的影片很有用;只是工具很貴!!!老K手邊有現成的;站內兄弟用得著的,盡管開口,免費出借,來回郵資及材料工本自付即可。