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Smooth Rims?


-Pete-
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Hi, got another nooby question... sorry guys, but with no trials riders in my area I have to ask someone these stupid questions :rolleyes:

The sidewalls on my back wheel arn't flat/smooth, they have ridges running the whole way round (I think it may have something to do with not being designed for v-brakes or something?), but I was wondering if this would make much of a difference for my braking power. Would I be able to lock the brakes better if I bought some rims with a flat side wall?

Your help is much appreciated!

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No it's not been grinded, that's why I'm a bit confused. They're brand new rims that came with the bike and it's how its been manufactured. I can't seem to find anything like it on the internet either lol?

EDIT: The ridges are all uniform and parallel the whole way round :blink:

Edited by -Pete-
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It will have been ground, it gives better braking performance genrally so if i was you, id stick to it and dont bother with smooth rims (Y)

Possibly ground?

Smooth rims are good if you have some really sticky pads,

But its personal preference really.

I use a really old grind + Echo Red or White pads.

Gee-Wizz! :P

EDIT: I know exactly what!

It's an onza rim, yeah?

Edited by Borat
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I think you're describing a 'machined' sidewall, where there are concentric ridges running the whole way around the sidewall? 521s had a similar kinda thing, though it was barely noticable.

Not sure it has much to do with braking, probably just a result of the finishing on the rim.

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Do you mean 'ridges' that run horizontally around the braking surface opposed to 'ridges' that run vertically (like a ground rim)?

This will be from the manufacturing of the rim. There is nothing to worry about.

As stated above though, a grind will give you the best performance! (Y)

My memory card adapter has just chosen a great time to stop working unfortunately. Yeah they run horizontally round the braking surface. They're very small but they are noticable. I was just wondering if you guys thought it would be worth buying some rims with a completely flat braking surface, or if it's not worth the money just for that?

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I think you'd only have a non-machined sidewall on cheaper rims. Having them machined ensures a flat, smooth surface so improves brake performance.

Edited by Box
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Not worth the money. I seriously dont think they will have any effect on the performance of your brake, good or bad lol. Save your money for when something breaks and you need to replace it! If you want to increase your braking performance, put a light sharp grind on your rear braking surface and buy some cnc Heatsink Yellows. (Y).

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Not worth the money. I seriously dont think they will have any effect on the performance of your brake, good or bad lol. Save your money for when something breaks and you need to replace it! If you want to increase your braking performance, put a light sharp grind on your rear braking surface and buy some cnc Heatsink Yellows. (Y).

Wicked thanks for your help guys, I'll stick with them for now. I'm glad I've finally got my back brake sorted out now anyway. Means I can lock my wheel with one finger which is a great help for rear wheel hops etc.

Cheers!

Edited by -Pete-
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