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Step 12Jackshaft alignment and installation
This photo show the right side support of the jackshaft using the rear triangle of a donor bike.
I had to tack this side in place as well and then tweak things around on both side to complete the alignment and weld it all home.
I also added a piece of seat tube to mount a front derailleur. Since the angle of the rear (right side) drivetrain was changed by locating the jackshaft high, I had to provide a front derailleur mount that matched the revise drivetrain angle.
I later had to add side and rear struts to the left side fork support because the torque on the chain shifted the fork mount and misaligned the whole left side drive train.
Now I'm set for the 21 speed drivetrain.
I had to tack this side in place as well and then tweak things around on both side to complete the alignment and weld it all home.
I also added a piece of seat tube to mount a front derailleur. Since the angle of the rear (right side) drivetrain was changed by locating the jackshaft high, I had to provide a front derailleur mount that matched the revise drivetrain angle.
I later had to add side and rear struts to the left side fork support because the torque on the chain shifted the fork mount and misaligned the whole left side drive train.
Now I'm set for the 21 speed drivetrain.
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Nov 15, 2009. 6:40 PMMrRodrigez
says:
nice welds!! I've been welding for 2 months now and my stick arc welding is still crap compared to that!! But my steel TIG welding is godly :D
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