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SRAM Roam & Rail Wheels

15:00 11th April 2013 by Ed Haythornthwaite
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If you read this post that we ran last week on the new RockShox Pike’s then you’ll already know that James McKnight has been swanning about at the SRAM ‘Trail House’ where he’s been treated to a first preview of all their new kit. Anyway, what with all the usual embargo rules we’re restricted as to when we can tell you about all this new kit, but the good news is that today McKnight can tell you all about their new range of wheels…

SRAM Trail House part 2: Skids and wheels in the desert

Last week I reported from the 2013 SRAM Trail House on the return, or more specifically the total reinvention, of RockShox’s Pike fork – classically the hardcore trail rider’s faithful companion and a product that has been brought back to cater for the emerging scene of adventure hunting, enduro racing mountain bikers.

Sedona landscape. A visit is highly recommended - we'll have more about the riding in a MTB Travel Guide soon.

Out in the Arizonan desert many strange and inexplicable events take place on a regular basis, including power vortexes opening out of nowhere and tie dyed hippies vanishing into thin air. The one thing that did make a lot of sense during my visit was that of the introduction of an entire range of trail-friendly wheels to SRAM’s product line.

Having already dabbled in the mountain bike wheel world (with the Rise carbon hoops), it was only a matter of time before Jesse Jakobait, SRAM’s full-time wheel design engineer, came out with several other offerings to cover further bases. In the haze that was an early morning jet lagged product presentation I was most impressed to find out that Jesse, along with product manager Bastien Donze, had been working on the wheels for the last three years – a considerable amount of time and surely a sign that they must have the wheels honed. Having chatted over beers I knew that Jesse pretty much defines ‘hardcore trail rider’, with a history of pro downhill and cross-country racing and ridiculous endurance riding feats he is the all-round mountain biker and with an engineering CV including several years at another major bike brand I was keen to find out what innovation he could bring to the table.

But are these wheels revolutionary?

Of course not The wheel has been around for quite some time now so it would be foolish to expect a complete game-changer. However, SRAM’s offerings have been refined and then refined again, resulting in a line of 26”, 650b and 29” wheels that, above all else, announce themselves as being…sensible. These wheels have been designed with the intention of being well balanced between weight, strength and the ability to source spares. Read on.

The options

SRAM are now offering three wheel ranges – Rise, Rail and Roam. The latter two were the newly unveiled options so we’ll focus on those for now. The essentials: Roam 60 is a high spec, high price carbon wheel that is aimed at the hardcore rider, it’s “light enough for long climbs yet strong enough for the toughest enduro races” according to SRAM; then there’s the Roam 50 which is the alloy-rimmed version with all the ambition of its bigger brother; and the Rail 50 which “can withstand the most aggressive all-mountain/enduro riding while setting a new benchmark for lightweight in the category.”

SOLO uno Spoke…

The feature that I like the most is the single spoke length in each size of wheel. By offsetting the rim SRAM have been able to work with one single (straight pull) spoke length for both front and back, left and right sides of the wheels. This, of course, has been done before in various ways, but it highlights SRAM’s approach for 2014 and their desire to lower the number of spares that both rider and retailer need to carry. The substantially offset spoke holes in the rim don’t just allow the use of one length spoke though, they also help to balance out the angle of the spokes. This gives better triangulation, which in turn means better strength. Again offset spoke holes are nothing new, but the idea is more important than ever now that we have larger wheels. It also has to be said that we don’t think we’ve ever seen another company go for quite as much offset as you’ll find on these rims.

Rim profile

Engineer and test riders have worked a lot on getting the rim as minimal as possible where they can without sacrificing any strength. In effect what they have done is to analyse impacts and stresses on the rim through computer modelling and also, of course, by battering prototypes through piles of rocks around their base in Colorado.

AM_TrailH-130321-006

Apparently they have approached their wheels with a view to making end products that are “not too light”, especially where the carbon versions are concerned. It must be tempting to go lighter and lighter, but as Jesse pointed out, they’d rather use the advantages of carbon fibre to make something of similar weight but much stronger, instead of something much lighter and less strong.

They have also opted to ‘go wide’ on all their rims, which they have tagged ‘WIDE ANGLE’… As they put it, “This [wider] profile holds shape better, preventing tyre roll and giving you superior comfort and traction around corners.” So for their trail rims (Roam 50/60) they’ve gone for 21c (the distance in millimetres between the tyre hooks) and for the more aggressive Rail 50 they’ve gone for 23c, which is on the wide end of the spectrum for each rim’s designated discipline.

The hub

Inside the SRAM branded hubs is the patented (DT Swiss) Star Ratchet system that has been well proven over the years. Riding in the Sedona desert I certainly had no issues with the SRAM hubs, but then a two-day test is never going to be conclusive.

Roam 60 rear hub

The new XD driver body allows for use of the wide XX1 cassette and “provides an improved interface” , but the hubs are all still compatible with a regular 9/10 speed freehub body. All three of the new wheels are available with the XD driver, and all the rims UST compatible too.

SIDE SWAP is SRAM’s answer to a quick and simple axle conversion system – a cap either side of the hub that can be swapped to cater for all axle sizes. Not revolutionary but a nice touch and another box ticked for SRAM.

Out on the trail

As I’ve already said, a two-day test ride is never going to fully prove a set of wheels, but out on the dusty, rocky Arizonan trails I was more than happy with the 26” Rail 50s that were fitted to the shiny Devinci Dixon carbon I was riding. Quick to engage when I put the hammer down (in a failed attempt to catch up with our guide Lars Romig), stiff but not to the extent of feeling completely rigid (there’s a little ‘compliance’ as I heard it put) and I definitely gave them the full ‘smashing-into-rocks’ test on many occasions without any dents appearing.

Plenty of rocks on the trails in Sedona and I hit most of them! The rims didn't faulter.

Verdict? I’m not going to give one on the wheels’ performance as that would be ludicrous after a couple of days. However, I will say that I was pleasantly surprised by SRAM’s apparent drive to reduce the number of spare parts and ‘standards’, not only with the new wheels but across their 2014 ranges.

As a final side-note, the Roam 50 and Roam 60 are available in 26”, 27.5” and 29” sizes, the Rail 50 is available in 26” and 27.5” only.

Prices…

Ah yes, the prices. Oh so easy to overlook when in a slightly jet lagged state, although I was woken from my daze when I heard the figures for the carbon wheels.

Here we go then (deep breath):

Roam 60: Front £749.99 Rear £949.99
Weight (pair in lightest configuration)
·      26” - 1495g
·      27.5” - 1550g
·      29” - 1625g

Roam 50: Front £369.99 Rear £449.99
Weight (pair in lightest configuration)
·      26” - 1475g
·      27.5” - 1530g
·      29” - 1610g

Rail 50: Front £369.99 Rear £449.99
Weight (pair in lightest configuration)
·      26” - 1690g
·      27.5” - 1750g
·      29” - 1830g

Big investments indeed, but is the price justified? What do you think? Let us know below.

We’ll have one last product launch story coming from the Trail House in several weeks’ time…

  1. david

    “21c (the distance in millimetres between the tyre hooks)” what?? is that supposed to read 2.1cm and 2.3cm? if so that is hardly wide for today’s modern all mountain/trail rims.

  2. Jan

    I’ll be sticking with my Mavic SX

  3. ddmonkey

    They look nice but how much?!!? More expensive than Crossmax SX’s, why buy them?

  4. savdog

    why buy these or crossmax,s ? a pair of hope hoops does the job at half the price

  5. GABE

    cos crossmax are leaps and bounds ahead. hope hoops are good. these look ok. crossmaxes are one of the finest wheelsets available from THE finest rim manufacturer around. not sure about the offset spoke holes on these. good for even spoke tension (long term stability of wheelbuild over many thousands of miles) not good for the rim itself (far more prone to damage from heavy landings/impacts) perhaps a good wheelset for a very high end off road commuter? And i reckon the whole 1 length spoke thing is going to save Sram a lot more money than it does the end user.

  6. Duncan

    Its going to take a lot to lull me away from a set of Hope laced to Flows or Arch EXs for less than the price of the cheapest single wheel in this post!

  7. More BS

    Too expensive and not really that wide rims. Hugely overpriced piss take really, they must think we are such mugs. Totally agree with others, why not just get mavics or hope???

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