Moment Crank Insert Issue

Unicycles and Equipment
10

Spanner Wrench

The tool you’ll need is called a spanner wrench. It’s always nice to have some loctite put in the insert too if you’re willing to loosen the insert and take it all the way off. A local bikeshop will have a spanner wrench and most likely won’t charge a cent to tighten it…at least if they’re nice guys :slight_smile:

11

whatever you do, do not do this, this is a good way to ruin your cranks, to fix mine, i got the pedal, really reefed on it as good as i could tightening it into the cranks, then i got the tool and tightened it as good as i could, the inserts should not be able to come out of the cranks all the way, mine unscrewed about 3/4 turn before they hit some kind of lock and would not move any farther. (pedals were in at this point)

12

well the locking ring is what keeps the insert in the crank when you unscrew the pedal, if you can find some other way to do that, i’m sure it will be fine, or if you just never ever loosen your pedals or ride backwards longish distances it isn’t really a problem. I would email kris in this situation. I’m sure he will do something to resolve your issue

13

this is a good thread to keep handy. I talked to udc when I had this problem and they said about the same thing.

14

I searched and revived this thread about Moment Cranks Inserts.

Last fall, my KH24 left pedal was stuck (at one point in my ignorant past, I probably thought that pedals had to be really tight). In fact, the insert was spinning a bit instead as I tried to loosen the pedal.

The guys at my LBS worked for a couple minutes (no charge!), one of them holding the spanner, and one yarding on the pedal wrench, and they finally got the pedal off. I took off those 150mm cranks and replaced them with 125/150 cranks for our Panama trip.

Then, recently, I shuffled around all my Moment cranks and put the old 150s back onto my KH24.

So…

During a several mile muni ride yesterday, I noticed that now the insert is very loose, literally jiggling. Since the left is reverse threaded, the insert spun in toward the wheel, and by the end of the ride, 2 or 3 mm of the insert was visible in the INSIDE of the crank. I’m pretty sure this means the crank insert is FUBAR.

Anyone with answer/advice/similar situation?

15

No idea, but if it can not be fixed in a proper way I would resort to jb weld.

16

Not with Moments. I had the same problem with a set of SNAFU bmx cranks, the left insert was loose in the crank arm, and I had no joy with SNAFU customer service. I removed the insert, put some chemical metal in the crank arm with the insert, and clamped it in a vice over night. That worked a treat.

17

I’ve had my new Moment cranks for about one and a half months now, with maybe twice a week usage. Both rings that go on the other side of the insert have fallen out. I’ve still got one, but I can’t tighten it without using special tools and taking off the crank. I’ve not tried taking off my pedals yet.

18

Since this thread has popped up again I’ll just throw in an update from my experience. I never got the tool to tighten the inserts and I never used any binding chemicals and my cranks are fine. I’ve swapped my pedals several times and the inserts still do spin a half turn or so but once I get the pedals all tightened up everything stays in place properly.

19

Bump

My Moment cranks insert are loose… again… last time I used a spoke to tight them up, but now it doesn’t work, I want to take off my pedal to put it on my new Tensiles cranks but I can’t because the insert is loose. So, is there any other way to tight them without using the Spanner rench? Right now I got one pedal off, I just need to tight the left insert and take my pedal off.

20

Bumpity bump…

Anyone?! I really need to take my pedal off…

21

I hate to be the bearer of bad news. The inserts on my Tensiles spin a little when I remove the pedals. Not bad enough for it to be impossible to remove the pedals though…yet :angry:

22

Ugh, not good. I’ve got a pair of Tensiles waiting for me right now. How long have you riden them?

23

I think I have had them 8 or 9 months now. I used to swap my pedals between my trials and my muni because I only had one set. Took a few months of doing it to work the inserts loose though.

24

I went to the LBS with my left crank see if they could repair it, but they didn’t have the right tools. So, I’ll try to to something for it now, if it works I’ll post some pictures. It’ll help everyone hopfully:)

25

To everyone who wants to repair their Inserts without having to buy a tool, here’s how I did it:)

You will need:
1 piece of Ply-wood
2 screws
2 washers
Super-Glue if you want to be sure that it doesn’t get loose again (I recommend it)

The pictures says everything how to built it. It worked for me, but now my insert is a little bit scrached because of the screws… but it’s tight:D


26

I just went for a ride and noticed the inside of one of my inserts (the part pictures above on the inside of the crank) was loose to the point of falling off and another one had fallen off. I had never thought to check them before or heard of them coming off. The outside of the insert (the part that you thread the pedal into) is solid and not moving.
Can you get replacement parts for these? I haven’t seen the tool anywhere.

27

Nice spanner wrench dude!

28

Haha! thanks! It stills work perfectly too:) It`s one of the best tool I have:p

29

I got another pair of cranks with a pedal that I can’t take off from the insert. I put the insert in the crank with blue Locktight but it didn’t worked, the insert is still moving. Anyone can help me with that?