Reasonable Weight for FS XC MTB.

IcarusGreen · February 2009

I have a CBoardman Mtb FS Comp coming in at 29.1 Ibs. But my question is what's a good weight for FS XC Mtb's and what could i be looking at getting the weight down to with some reasonable upgrades.

Andy B · February 2009

That's not a bad weight (I assume it's the manufacturer's weight, which is usually without pedals & using a small frame)

Weight loss on bike can cost a lot of money, cheapest things are usually tyres (might save 0.5 lb.

You could lose a couple of lb, but it would cost a fair bit.

What is the spec of the bike as it is now?

M6TTF · February 2009

Depends on the size of your wallet, I'd say anything from 27 - 30 LBS is fine for trail riding for a reasonable budget, if cash isn't a problem you can get down to early 20s!

Andy B · February 2009

M6TTF wrote:

Depends on the size of your wallet, I'd say anything from 27 - 30 LBS is fine for trail riding for a reasonable budget, if cash isn't a problem you can get down to early 20s!

Probably not with the frame he has though, I'd have thought more like 26-27lb.

My Orange 5 weighs in at 28lb (6.6lb frame & shock) & it's got some fairly high end kit on it (X9, carbon bars, Thomson, Hope....) OK it's a longer travel bike, but unless I spend shed loads more it's not getting much lighter then 28lb.

maurice · February 2009

Yup, I'd be happy with that weight.

My Kona Dawg is 31lbs, this is with XT/XTR and 717/XT wheels!

It rides nice enough and is light enough to finish mid-class in an XC 'Open' race, so 29lbs should be decent for general XC I think.

IcarusGreen · February 2009

The spec is http://www.boardmanbikes.com/mtbfs/fs_comp.html

The weight is on a Med without pedals and the bike is standard (at the moment).

Thanks for the advice, I'll concentrate on getting the ride right and not worry about losing any Ibs from the bike (I'll try to lose some from myself).

IcarusGreen · February 2009

Frame Lightweight 4 bar linkage full suspension frame with 120mm travel and butted tubing
Rear Shock RockShox Ario 2.1 Air shock with adjustable rebound damping
Fork RockShox Recon 335 Air, 120mm travel, adjustable rebound damping & lockout
Headset Semi integrated cartridge bearing
Spacers Full carbon 4x5mm, 1x10mm
Stem Ritchey OS 31.8mm
Handlebars Ritchey Rizer OS 31.8mm
Seatpost Ritchey 31.6mm
Saddle cboardman, Cro-Mo rails
Brakes Avid Juicy 3 hydraulic disc brakes, 160mm rotors
Shifters SRAM X5 9 speed
Rear Mech SRAM X7
Front Mech SRAM X5
Cassette SRAM PG950 11-32T
Chain Shimano HG-73
Chainset Truvativ Firex 3.1 GXP 44/32/22T
Bottom Bracket Truvativ GXP
Rims Ritchey Pro Disc 32H
Hubs Sealed bearings
Spokes Stainless steel double butted black
Tyres Continental Speed King 2.1”
Pedals Alloy platform
Weight* 29.1 lbs

*approx weight based on medium excl pedals

M6TTF · February 2009

Andy_B wrote:

M6TTF wrote:

Depends on the size of your wallet, I'd say anything from 27 - 30 LBS is fine for trail riding for a reasonable budget, if cash isn't a problem you can get down to early 20s!

Probably not with the frame he has though, I'd have thought more like 26-27lb.

My Orange 5 weighs in at 28lb (6.6lb frame & shock) & it's got some fairly high end kit on it (X9, carbon bars, Thomson, Hope....) OK it's a longer travel bike, but unless I spend shed loads more it's not getting much lighter then 28lb.

Yep, sorry I wasn't referring to his bike, just what weights are possible in the 'trail' sector if money is no object.

IcarusGreen · February 2009

The first item that is going is the RockShox Ario 2.1 Air shock as it seems to be one of the few 'let down' areas of the standard bike.

So my next question is what i should replace it with

thinking of a Rockshox monarch 4.2 or 3.3

http://www.merlincycles.co.uk/?fn=categ ... goryId=140

Andy B · February 2009

You'll need to get one with the same eye to eye length & stroke length.

I've not used RS shocks before, I've used Manitou (Swinger air 3 way) & Fox (RP23), so cannot comment on them. The Fox RP23 is a superb shock, if a little pricey

IcarusGreen · February 2009

Ye, the RP23 is a bitout of my price range unless i can pick one up 2nd hand.

The Swinger air 3 way is a bit nearer what i'm going to spend

xgeek · February 2009

IcarusGreen wrote:

The first item that is going is the RockShox Ario 2.1 Air shock as it seems to be one of the few 'let down' areas of the standard bike.

So my next question is what i should replace it with

thinking of a Rockshox monarch 4.2 or 3.3

http://www.merlincycles.co.uk/?fn=categ ... goryId=140

I have been looking at the new Boardman FS range and I have gotta ask why you went for the comp if you wanted to change the rear shock? For £130 more you could have bought the team version that comes with a monarch 3.1, plus better front fork, MUCH better brakes, better gears and better finishing kit. :shock:

Seems strange not to buy what you wanted in the first place as it is much cheaper that way. :?

IcarusGreen · February 2009

I bought the bike with the money I had at the time and the plan of only changing things as they broke but i just can't seem to get the ride right on the shock.

Besides, by the time i've sold the Ario 2.1 the upgrade will only cost me about £50 from my own pocket.

Oh - and i always seem to get the modifying bug.

supersonic · February 2009

The spec is very even - so big weight changes are going to cost.

Toasty · February 2009

Nothing obviously wrong and expensive to make it lighter, for example:

XT Chainset - 100g saved - £120
Rebas - 200g saved - £300
XT 11-32 Cassette - 100g saved - £45
XT Wheelset - at least 200g I bet - you can save another 200g on top of this if you spend more - £270
Tubeless tyres - should save about 150g, allowing for heavier tyres - £50
Carbon Bars - 150g assuming your bars are the Ritchey Pro Rizers, they're oddly heavy - £60

2lbs saved for £845, hehe. Cassette would be the only obvious thing on the list, if the bike is new you won't need a new chain.

Toasty · February 2009

Nothing obviously wrong and expensive to make it lighter, for example:

XT Chainset - 100g saved - £120
Rebas - 200g saved - £300
XT 11-32 Cassette - 100g saved - £45
XT Wheelset - at least 200g I bet - you can save another 200g on top of this if you spend more - £270
Tubeless tyres - should save about 150g, allowing for heavier tyres - £50
Carbon Bars - 150g assuming your bars are the Ritchey Pro Rizers, they're oddly heavy - £60

2lbs saved for £845, hehe. Cassette and bars would be the only obvious things on the list, if the bike is new you won't need a new chain to swap cassette.

2008 epic · February 2009

Standard epic comp 26lbs with crank bros candy, thinking of fitting rovals to lower the rolling weight

Toasty · February 2009

2008 epic wrote:

Standard epic comp 26lbs with crank bros candy, thinking of fitting rovals to lower the rolling weight

Is that claimed weight?

http://forums.mtbr.com/showthread.php?t=493254
http://forums.mtbr.com/showthread.php?t=376216

daveb · February 2009

Rocky Mountain ETS-X 70 built for more gnarly riding 31lbs
Giant Anthem-X 1 built for racing 24lbs (with some cash could get it pretty easily down to 22 lbs.
Cotic Soul for general trail riding 26 lbs

2008 epic · February 2009

No, i weighed it my self on reuban heaton calibrated scales.
Its a large 08 model

stubs · March 2009

I have just done a bit of research on weightweenies site and for a £1000 I reckon you could lose 3.5 pounds in weight

Thing is will that 3.5 pounds make a thousand pound difference to your riding. Best to replace bits as they wear out with the best you can afford at the time and keep the scales away from your bike

jamesst · March 2009

Think my bike origanally was around the 32.5 lbs mark, major change were the dt swiss wheels along with other upgrades, the forks made a major difference too, now weighs in at around 27.5lbs and flies along,well doeswhilst the chain aint constantly snapping (thats another story)

BurnesideWheelers · March 2009