Noob cycle question - please help!

jpod · 11 Jul 2020 at 16:17

Will these fit my bike?
Shimano EXTERNAL Road Bike Bottom Bracket BB-RS500
SHIMANO Crank Chainset Tiagra 4700 50/34 170mm

I picked up a Boardman Hybrid Competition Pro Carbon Fork Road Bike on ebay and the pedals were poorly fitted in the past and damaged the threads on the cranks - I need to change the bottom bracket too
cos it creaks.

Current set up is:

20 gears
front derailleur suntour f90
rear derailleur s-ram x9
chainset Truvativ Touro compact 50x36T
cassette Shimano CS-5600 12-27T
bottom bracket Truvativ GXP
cassette (rear cogs) Shimano CS-5600 12-27T
chain Shimano CN-5600

The other parts listed above are in good condition.

I guess I need a BB spanner to remove the current one and fit the next, greass.
What do I torque the crank bolt up to 40nm?

Many thanks pod

jpod · 11 Jul 2020 at 21:02

Bear said:
The RS500 bottom bracket is threadfit...................... you listed above

Thanks for sharing your expertise Bear - I will have a research and figure that out. Many thanks.

jpod · 11 Jul 2020 at 22:59

The_Arbiter said:
Not entirely sure on many crank angles, bb lengths etc vs compatibility....................and/or in the product box.

Thanks for posting, having difficultly identifying the BB and shimano equivalent - the search continues!

jpod · 12 Jul 2020 at 20:15

The_Arbiter said:
The old or new one?

The old one. Jonny M may have answered the q there.

jpod · 12 Jul 2020 at 20:15

Jonny ///M said:
Take a photo of the left hand side of the bottom bracket. I'm sure they have a black GXP threaded bottom bracket so the one you linked will work fine and use the same tool to remove and install each bb.

Fingers crossed (no pun intended) - thanks for posting.