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how daunting is changing the headset for a home mechanic with no press tool?
You’ll need a press tool of some fashion to do it properly. Bodging it with a mallet might get the job done but you’d risk damaging the parts. There’s affordable press tools made from threaded rod on eBay and the like, but you get what you pay for. If you plan on doing it again, lifeline makes a decent headset press for not loads of £.
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Got a Dura-Ace FC-7800 with a 53t chainring if you're keen? Came off a Brompton so has had the rear tabs ground a bit to clear the frame, etc.
Leshaches
Alb
@infmz
Nice builds! I've seen that video before which reminds me: I was looking at changing the Brompton crankset and BB earlier, after much usage, lack of trueness and play. While doing a clearout I noticed all the chainrings and crank arms I've sheered. Have decided I'm gonna go for something else - no JIS/Square taper, might even go Shimano HollowTech and run a 105 with a single ring.
@JurekB looks like you've done something similar with the Alfine cranks.
Another general Q, how daunting is changing the headset for a home mechanic with no press tool?