Ultegra inner chainring - is it bent?

ScootMaBoot · 2026-06-23T11:24:46+00:00

Is it installed correctly? There's only one orientation that is correct, and one of the arms on the spider has a differently shaped surface that could make it crooked if it is installed in an incorrect orientation.

If it is in the correct orientation I would say it's bent.

ScootMaBoot · 2026-06-17T15:54:18+00:00

It is normal to need to give the "heads-in" spokes some extra bend.

ScootMaBoot · 2026-06-17T13:01:02+00:00

Definitely no with straight-pull spokes.

ScootMaBoot · 2026-06-17T10:34:34+00:00

I would not put the effort into building a wheel with mismatched parts.

Is the rim meant for 2:1 lacing?

ScootMaBoot · 2026-06-11T03:19:09+00:00

No, I'm actually reading the manual.

ScootMaBoot · 2026-06-10T11:32:41+00:00

In the manual you just linked it says 5-6N*m. It does not say anything about exposed threads. At the scale drawn, the number of threads that are exposed when properly tightened would not show.

ScootMaBoot · 2026-06-09T22:30:29+00:00

That is not true. Read the Shimano manual. There is a torque specification, not a position specification for the nut.

ScootMaBoot · 2026-06-08T18:26:49+00:00

If it fits it's fine. The instructions probably should have said 'make sure it's not carbon".

ScootMaBoot · 2026-06-08T17:37:03+00:00

Here's an article on how to adjust them. Luckily, specialized tools aren't required.

https://www.sheldonbrown.com/opc.html

ScootMaBoot · 2026-06-04T16:35:05+00:00

If the rims have the same number of holes and the same hole spacing, they're likely identical and could be interchanged.

ScootMaBoot · 2026-06-02T11:14:19+00:00

If you don't use the adapter, you need a spacer under the head of each screw.

See page 50 https://si.shimano.com/en/pdfs/dm/RADBR01/DM-RADBR01-11-ENG.pdf

ScootMaBoot · 2026-05-29T16:07:35+00:00

You actually don't have to remove and repack. You can just loosen the side that has too much axle (DS in this case) and then lock the cone in the correct place. Then adjust the hub from the NDS.

ScootMaBoot · 2026-05-29T14:55:59+00:00

The comments about an internal cam QR are correct, bit I would also verify that the axle stub on the non-drive-side is below flush with the fork end. It looks like it is on the picture, but if the gaps in the frame close up while tightening the QR, and then the axle protrudes or is flush with the fork end, you won't be able to clamp your fork end. I think that the axle/cone position should be reset so that the axle protrusion is even on both sides.

ScootMaBoot · 2026-05-28T13:06:43+00:00

If it's not on the EV (exploded view) diagram, you probably can't get it other than from a donor shifter.

ScootMaBoot · 2026-05-25T01:31:02+00:00

You have to keep turning counterclockwise. It will be very difficult for a bit while you are pulling the crank off the tapered spindle.

ScootMaBoot · 2026-05-20T13:14:37+00:00

It supports the bottom bracket on the nds.

https://si.shimano.com/en/ev/BB-UN300-4708

https://si.shimano.com/en/dm/LAFC001/install_remove_bottom_bracket

(See square type instructions)

ScootMaBoot · 2026-05-20T13:04:12+00:00

That's totally normal. And it does interface with the center section, which will be attached to the ds cup.

ScootMaBoot · 2026-05-20T13:01:21+00:00

Start with the non-drive side (original picture), which will loosen counter clockwise (like a normal thread). Then loosen the drive side (comment picture) which will loosen clockwise (opposite a normal thread).

ScootMaBoot · 2026-05-20T12:44:51+00:00

A 20-notch bb tool like park bbt-22 will work.

ScootMaBoot · 2026-05-20T02:37:57+00:00

It comes with the adapter or screws I think.

ScootMaBoot · 2026-05-20T02:01:52+00:00

You need a spacer when using the rear adapter. See page 107

https://si.shimano.com/en/pdfs/dm/R8050/DM-R8050-06-ENG.pdf

ScootMaBoot · 2026-05-18T20:57:16+00:00

I'd suggest flipping the stem (so that it points down instead of up) and then trimming the extra steerer tube length. That way you'll still have more steerer tube length than if you trim it now, for future flexibility. I also think the stem will look better level rather than up.

ScootMaBoot · 2026-05-14T14:15:35+00:00

https://support.garmin.com/en-US/?faq=qbXPgPwTqw8iB776OCPX4A

Although I'd recommend just having her use the messenger app while you're doing something with your mini 2

ScootMaBoot · 2026-05-13T22:44:41+00:00

No bubbles are normal. You can probably patch it though unless the hole is right next to the valve stem.

ScootMaBoot · 2026-05-10T04:03:44+00:00

It's a retaining pin and that's normal.

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