Symmetrical vs asymmetrical

[BikeisLife]

Just about to spend my hard earned plastic money on a carbon hoop for my back wheel.

 

But now I am undecided if I must get a symmetrical or an asymmetrical hoop. Tried to read online but they all just talk about things that don’t really make sense to me. I am running a DT Swiss 350 boost hub. Will be doing the back wheel for now and the front one at a later stage.

 

So, I have two questions:

 

1. Is an asymmetrical rim beneficial with a boost hub, or even compatible?

2. Can one run an asymmetrical hoop on the back and a symmetrical rim on the front?

 

Thanks in advance.

[Captain Fastbastard Mayhem]

Yes and yes.

 

Assymetrical hoops basically allow one thing. Equal (or close as dammit) spoke lengths. This has a follow on effect on rim stiffness due to the closer-to-isosceles triangle arrangement of the hub spokes and rim, which allows a stiffer build when compared to non-assymetric rims and their closer-to-right-angled triangle arrangement.

 

And yes. You can mix. No issues there at all. Only thing that changes is the dish of the rim to allow for different offsets

 

Assymetrical rims allow for a stiffer construct as the rim is able to be places centrally to the hub flanges vs offset to one side.

 

Tires remain central, regardless.

[BikeisLife]

Yes and yes.

 

Assymetrical hoops basically allow one thing. Equal (or close as dammit) spoke lengths. This has a follow on effect on rim stiffness due to the closer-to-isosceles triangle arrangement of the hub spokes and rim, which allows a stiffer build when compared to non-assymetric rims and their closer-to-right-angled triangle arrangement.

 

And yes. You can mix. No issues there at all. Only thing that changes is the dish of the rim to allow for different offsets

 

Assymetrical rims allow for a stiffer construct as the rim is able to be places centrally to the hub flanges vs offset to one side.

 

Tires remain central, regardless.

So basically it’s a no brainer to go for asymmetrical?

[Grease_Monkey]

So basically it’s a no brainer to go for asymmetrical?

Yup, if you can go asymmetrical, do it.

[TIB]

Be a symmetrical. The world need more symmetricals..

 

sorry, just could not resist to be a lert     

[BikeisLife]

Yup, if you can go asymmetrical, do it.

Here are my two options:

 

1. 30mm external, 25 internal, asymmetrical, 22 deep and 310g

 

http://www.nextie.net/ultralight-mountain-clincher-30mm-NXT29UL30

 

 

2. 32mm external, 27mm internal, symmetrical, 27 deep and 370g

 

http://www.nextie.net/premium-mountain-29-inch-NXT29XM33

 

Which would you choose?

 

Bearing in mind I ride/race XC and do some of the freeride stuff at Giba.

 

Thanks!

 

[Captain Fastbastard Mayhem]

27. every day. Wider rims outweigh the benefits of asymmetrical, IMO. 

[duanelr]

Here are my two options:

 

1. 30mm external, 25 internal, asymmetrical, 22 deep and 310g

 

http://www.nextie.net/ultralight-mountain-clincher-30mm-NXT29UL30

 

 

2. 32mm external, 27mm internal, symmetrical, 27 deep and 370g

 

http://www.nextie.net/premium-mountain-29-inch-NXT29XM33

 

Which would you choose?

 

Bearing in mind I ride/race XC and do some of the freeride stuff at Giba.

 

Thanks!

 

Hi Dean, not to hi jack the thread or change the subject, but are you buying the nextie rims directly from the nextie website? Asking coz i've got my eyes on a set of nextie rims as well. if you buy let me know the experience / delivery etc. I'm always skeptical thanks

[BikeisLife]

Hi Dean, not to hi jack the thread or change the subject, but are you buying the nextie rims directly from the nextie website? Asking coz i've got my eyes on a set of nextie rims as well. if you buy let me know the experience / delivery etc. I'm always skeptical thanks

Shall do!

 

I'm not actually using their shipping. I use Aramex Global shopper. Quick delivery and fairly cheap rates! 

[Quagga]

Shall do!

 

I'm not actually using their shipping. I use Aramex Global shopper. Quick delivery and fairly cheap rates! 

 

Could you perhaps DM me on how to setup and use Aramex Global.

Also, why not look at Yuanan bike Assym 30mm internal for less than what you will pay for Nextie

 

One more important thing. Assym is the way to go UNLESS you rinding a Canondale SI

[Grease_Monkey]

Agree with Myles, wider is better. Personally I think the sweet spot (for me) is at 29mm - 32mm internal width, assymetrical. But if I had to choose between wide or assymetrical I would go with wide. 

 

PS, I run 2.4" tyres. Dunno what you are planning on using, but I assume from those widths you are planning on using 2.25" to 2.35" wide tyres?

[BikeisLife]

Agree with Myles, wider is better. Personally I think the sweet spot (for me) is at 29mm - 32mm internal width, assymetrical. But if I had to choose between wide or assymetrical I would go with wide. 

 

PS, I run 2.4" tyres. Dunno what you are planning on using, but I assume from those widths you are planning on using 2.25" to 2.35" wide tyres?

Plan on using tyres in those sizes. 

 

I think anything bigger than 27 with my tyre sizes will be a waste.

[GrahamS2]

Here are my two options:

 

1. 30mm external, 25 internal, asymmetrical, 22 deep and 310g

 

http://www.nextie.net/ultralight-mountain-clincher-30mm-NXT29UL30

 

 

2. 32mm external, 27mm internal, symmetrical, 27 deep and 370g

 

http://www.nextie.net/premium-mountain-29-inch-NXT29XM33

 

Which would you choose?

 

Bearing in mind I ride/race XC and do some of the freeride stuff at Giba.

 

Thanks!

 

Also take a look at these then

http://www.xmcarbonspeed.com/Productinfo.asp?f=1395

 

I found their pricing to be very good and quality is top notch.

[Captain Fastbastard Mayhem]

Also take a look at these then

http://www.xmcarbonspeed.com/Productinfo.asp?f=1395

 

I found their pricing to be very good and quality is top notch.

If I were to buy, XM is the place I'd buy from. 

[Quagga]

Cheaper that XM and Email /  Deal with Cassie

Ask for price, dont thake the price on website

 

 

http://www.yuananbike.com/goods.php?id=114

 

Or 

http://www.yuananbike.com/goods.php?id=113

[Grease_Monkey]

Plan on using tyres in those sizes.

 

I think anything bigger than 27 with my tyre sizes will be a waste.

Yeah, then the width is spot on! Wider than that only really helps if you are going for a wide tyre too.