Rigid forks too long?
Just built this Inbred using my Ebay Earnings and parts from cellar. Used to 90s MTBs and road bikes so this feels slack to me. Forks are Surly 1x1 (453mm A-C) suspension corrected for 100mm, though On-One's own cromo 100mm corrected forks are 440mm A-C.
Most 26er 100mm sus forks seem to be in the 470s without sag, so this seemed reasonable to me when buying, but looks huge to me with 2.1 tyres.
Does flex a bit when braking...
Looks fine to me, but the seat's not level.
Looks good to me (guessing you haven't cut the steerer tube yet)! The suspension corrected rigid forks look big because they don't have the bridge...thing...over top of the wheel that their suspension counterpart has.
If you look at (most) 90's rigid bikes, they typically had longer head tubes and different geometry that resulted in shorter stanchions; they weren't built to replace longer travel suspension forks as they were designed rigid.
If you need to finetune for sag, you can, at least to some extent, play around with your spacer stack.
When I converted my 26 to rigid, I used the nashbar cro-mo one which has an axle-crown measurement of 453mm (which was pretty close to my old forks unsagged measurement); it replaced a suntour xc fork with 63mm of travel. I wound up putting one 5mm spacer over the stem and left the rest where they were.
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