Bottom bracket height bike hack
I have an older full suspension frame that rides really well, its a horst link rear end with a coil shock and tracks the ground brilliantly. Only problem I had with it is the bottom bracket height is relatively high at around 14″ static, 13.5″ sagged. I tried offset bushings but they won’t fit with the rear shock linkage so I came up with a fantastic solution. The cranks I’m using have a splined interface on one side. Instead of mounting them diametrically opposite each other I have mounted them offset by about 10 degrees so that with my leading foot forward they point down in a ‘V’ shape givig me an effectively 1″ lower bottom bracket height. As a bonus, if I’m hitting a techie rocky section I switch my feet around and bingo! I now have 1″ higher pedal clearance.Posted 4 months agokeirMember
Specialized tried this on the Stumppumper concept pumptrack bikePosted 4 months agoStevet1Member
Specialized tried this on the Stumppumper concept pumptrack bike
Started this as a bored joke thread but good to see someone has actually done it!Posted 4 months ago
Those pedals are brilliant – variable crank length depending on position in cycle – wish I could try some.
Looks to me like they put the upper surface in line with the bearing axis, so they’ll actually remove the variable effective crank length that normal pedals will give.Posted 4 months agocookeaaSubscriber
Couldn’t help myself, yep just had a quick watch on YouTube, he appears to be applying effort to undo the nut on his skateboard truck (counter clockwise), except there’s the sound of a ratchet and having apparently done nothing to the thing, gives the wheel a little spin just to check… Well something I suppose.
Then having scooped a dollop of grease out of a tin, our expert mechanic again rotates a (again audibly ratcheting) spanner 1/4 turn counter clockwise before rotating his wonky cranks…
He then appears to plug in a spark plug connector and then turns an ignition key…
The lads on a roll so they then turn him loose on Her Majesty’s fleet…
We should be losing a vessel a week if that’s a true representation of things…Posted 4 months ago
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