I have seen meny DH bikes using rear derailleurs from road bikes enstead of from mountein bikes. I just remembered because I sew the picture of KonaniKonan which again confused me why the use of Shimano105 rear derailleurs.
My question is why? Does this enclude the sprockets...which also would also mean the nead for a road component shifter?
Just nothing. Confused me only. (Wala lang. Naguguluhan lang ako)
check the thread below, just scroll down, It's not just the derailleur but the whole drive train
Ive just converted my drive train o my dh race bike, 105 short cage derailleur, dura ace 9 speed chain and ultegra 12- 27 sprocket,
the reason is:
-> shifting is crispier like jolibee chiken joy hehehehe, jok -> seriously you will have enough tall gearing even if you use small 44, 42 to 40 teeth chain ring, this will depend on what type the DH course will be (pedaling or not), as per frorider the key is to spin and not to grind, and slight heavy sya at gate starts, may explosive power, So not only for Dh but also for 4X, -> your chain length is shorter to reduce chain slapping, -> short cage derailleur has clearance against roots and rocks along the course. ->and yes road componenets is lighter, the trend is to lighten up your dh race bike, lighter is faster, We are also weight junkies like our XC brothers hehehe.
fyi, short cage will not reach the 34 teeth sprocket, maximum teeth is only 28 as per manual but it can work on 32 teeth.
Derailliuer clearance from the rough stuffs is the main thing that I considered why I went for a 105 RD, we usually run on rocky trails kasi and sometimes no matter how you chuz a line on the rough, sometimes nga theres no neat line at all sumasabit ang RD. Having a Shortcaged 105 medyo na lessen ang chances on breaking my RD hanger and the RD itself
The second reason is that I cant afford the Saint RD ;D ( which is shortcaged if I got it rayt, GURUs tama po ba?)
As for its other benefits, RockeTHEman has said it na DAng!Not even aware of those things brad ;D