I am going to build up my new frame this weekend. About to install the bottom bracket and I'm thinking of using the mod where you put a grip flange between the sprocket and bearing.I've read through old posts about it but wanted to ask you guys to get a more modern consensus: Do most of you install the inner tube spacer between the bearings? It's important for the health of the bearings but I've seen that some people install without it because it reduces weight (but almost an negligible amount as the tube spacer barely weighs anything) and without it you can tighten things up more but this is not good for the bearings obviously. My cranks are profile with 48 splines and have compression bolts on the ends of the spindle. They are the profile mini magnutanium ones.
I wouldn't skip it.They wouldn't add an extra cost if it wasn't needed.One plus for installing it is that you can really tighten the crank bolts without worrying about messing up the bearings.If you want to skip it for tightening the cranks so they don't move you can just install the washer and trim it a mm more than needed,you will have the same result but with safety.Wouldn't do that either.Best way to do it is with the Vocal DRS.The weight of the washer is laughable,if you get to the point that you count such weight differences start thinking about removing the paint from your frame and parts,you could save 100 more grams if you raw your whole bike!