DIY Wheels - Hollow Wheels - Very Comfy

Yeah I should have drilled through the inner core kegel holes. Now that you mentioned it that makes more sense. I just tightened them on. My kegel adapter pins are very short. I don’t think they can reach that far anyway though.

Outer? Lol the inner looks perfectly fine there

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I think this is semantics. Easy enough to refer to out the outside half, also as an inner core since it also has a bearing seat.

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Well on the bright side, its kinda crazy that you made it home on a one bearing wheel.

These wheels are too complex for their own good, it appears.

Is Doug around to comment?

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Overengineering eventually just becomes engineering; I think his concepts are sound, but obviously there are some revisions still to go. I will say that I haven’t gotten nearly as much efficiency as I was expecting out of my pros, not really sure why that is; I’ve been testing them on the Meepo Voyager, and while I haven’t done extensive testing, they seem to be more power-hungry than both the Mad Esk8 wheels and the Meepo Cyclone 110s I was sent for testing.

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Oh lol I see, I suppose it could be seen that way

It is slightly concerning but hopefully the next batch is a bit better, it’s still a new concept. I’m just a tiny bit lighter than OP, but probably about the same when carrying gear. Mine look okay, no sign of delam on the pros. However, they do wear quite quick haha

You only really have the extreme camber for the first 50 miles or first track day

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IMO if your axle isn’t fully packed/spaced, you’re doing it wrong.

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Looks like Doug might be working with the BKB guys to help with this project…I expect good things to happen. It takes guts to make something and sell it…shouldn’t take you down with design and production issues.

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Sauce?

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Mild for me.

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:triumph: :triumph: :triumph:

have you confirmed what might’ve caused the failure? any word from momentum?

as a heavier rider, the issues I’ve seen so far make me nervous

@TheGoodMomentum

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I haven’t contacted them directly yet. I really have no interest in using these again. I would prefer a refund, but that’s probably out of the terms by now. What would you guys do?

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I would send them an email and describe the issue in as much detail as possible. Photos, how they were setup, what you think happened.

You might get a refund or replacement, and it will help momentum improve the product.

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Agreed. At the very least I would contact Doug @TheGoodMomentum and let him know what happened. Even if he is unable to refund or replace, it will help the future development of the wheels.

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Dude, that’s first step.
You deserve a refund.
Doug is MIA and his hypemen are silent.

Hi @BallisticBullocks,

Thanks for your concern and your contribution to this thread. I always take in feedback to improve the wheels and I have carefully taken a look at your pictures.

The front cover does not bear any significant load and you can ride without the cover in that configuration. This is why you didn’t notice a thing until you got home. Nothing is wrong with your wheel. Your bearing clearly failed. Replace the bearing, get a new cover, and you’ll be all set.

If this were any other wheel and the outer bearing would have failed, you would have been sent flying because the entire wheel would have come off.

With Cagauamas, the entire wheel would have come off and you would have crashed. This statement that it would not happen to Caguamas under any circumstance is completely false.

The fact that they are split into two pieces does not have any impact on weakness. A significant load is placed through the other half. It was purposefully designed like this. Again. If it were any other wheel, there is a 100% chance you would have been thrown off the board. There are strong chances that you could have been hurt as well if it were with any other wheel with a bearing failure.

Case in point: You did not notice the cover was gone until you got home. Your wheels are fine and you are fine.

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Hello @haven, thanks for commenting. He has not emailed me until this morning and I am heads down in developing the next Hollow Wheel. Sorry for my delayed response in checking this thread.

This is not a failure. The bearing failed. It has nothing to do with the wheels.

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Hello @MacKeeper28 , Great to hear from you. I am happy to say that he arrived home without knowing the cover fell off. That indicates it is more stable against bearing failure, especially if he has a bearing spacer. It if were any other wheel, the entire wheel would have fallen off and so would he.

If the inner bearing on the Hollow Wheel failed, you’d have a very similar ride on a traditional wheel with an inner bearing failure.

Bearing failures are scary and are not ideal in any circumstance with any wheel. Let this be a reminder to everyone that you should Maintain and change out your bearings regularly whether or not you are on Hollow Wheels or any other wheels.

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Hi @Linny,

The wheels look amazing on your board and thanks for posting up feedback. Send me an email Hello@momentum-boards.com and I’ll send you a replacement right away. We have also changed the insert material to prevent that as well. This material that we used initially had a very low modulus of elasticity (stiff). So on the V2, I have picked another material with higher modulus so it will have the same interference fit, but you’ll also be able to take the pins out easier too. This is the first crack I have seen in the first production, but if this happens to anyone, then send me an email and I’ll take care of you.

The rods are in there tight so they don’t fall out, but they can be removed.

This is not a safety issue as well as the suspension inserts do not have significant failure. In this case, since they are cracked, the two pins would simply fall out. You may experience a slight imbalance due to unequal weight distribution, but that’s about it.

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