Hope Road External BB Question

[mattbibbingsMember]

You need to know the width of your bb shell. Normally 68mm or 73mm.

I nicked from an old stw thread as it explains it well. Thanks go to Matthew h for this one.

You definitely need at least one. If your BB shell is 68mm wide then you need 2 on the driveside and one on the non-drive. If your BB shell is 73mm wide then you only need one on the dive side. They mount between the cup and the BB shell.

[orangeboyMember]

That is for mtb not road
All road bikes are 68 mm shell
Use one spacer each side as shown here

http://www.hopetech.com/webtop/modules/_repository/documents/RoadBBinstructions.pdf

[FreesterMember]

Hi,

Just replaced the original Tiagra external HTII BB with a Hope road one.

The original cups were fitted without any spacers (unlike on my MTB).

But the Hope Road BB came with a 1mm spacer for each side. I don’t have any calipers / scales to measure but putting the old and new cups up side by side I think I need to fit the Hope one with the spacers?

Anyone know?

Thanks

[FreesterMember]

Cheers chaps I think the bit that confused me was the ‘determine spacers – see below’ in the destructions but actually showed the spacers being fitter..

Pretty sure width of Tiagra cup is same width as Hope one + 1mm spacer. Just wondered if anyone measured or knew for sure.

[ThrustyjustMember]

I believe the road BB’s sit 3 mm further out on the faces than a road BB, although I have an MTB bb in my road bike with a spacer on one side and works fine.

[coatesyMember]

Shimano road BB cups are wider than their MTB cups, but Hope use the same cups for both, and space them out for road use to make up the difference.