A bit more work on the PlanetX hillclimb rig during my morning coffee break from work. The chain kept jumping off the jockey wheels when in the largest cog if pedalling backwards more than one revolution; that wouldn't normally matter but in a hillclimb it's common to get set with a holder. At 5.5kg with everything lightened we're working with some tight tolerances which makes it all a bit of a hassle.
So I changed the rear mech hanger and adjusted everything but it still kept coming off. The solution?
Think about the chainline
. Swapping the chainring to the inner slot solved it. Maybe I should have considered that before
.
Just need to get the steerer cut and we'll do a final photo onto this post. All working and we're happy with the outcome given the original budget was £500 without wheels: the cost turned out to be £635 and £935 with wheels/tyres.
This evening we started to remove the 'large' headset spacer from my son's Argon E-116 TT bike to lower the bars. It's got a weird 3D headset and a special tool's needed to dismantle it. Having bought this (it didn't come with the bike) we set about lowering his bars. Not the best photo but this was how they started this evening, having lowered by one spacer already - far too high:
To remove the lower 3D spacers the forks needed to come out as they were part of the headset. Everything was stuck, dirty and/or dry which meant slow going. All parts were dismantled and cleaned with new grease. The tool, suggested in Argon's video to be simple to use, needed some 'persuasion' to work but we got there.
Bars lowered and some testing done: In some places you spend money in a wind-tunnel sorting out fit and reach. In my household you use me and a brother since the bars were loose, with mum taking the photos:
He's happy with the fit and after a short test ride (in shoes & helmet), with slight saddle tilt, declared it better. Proper test-ride to follow before a TT on Saturday. The steerer's going to be cut as well once everything's sorted.
My NeilPryde's going to have to wait until tomorrow for a crankset swap.