droo Posted January 28, 2015 Posted January 28, 2015 This is, with respect, just nonsense. Lighter and stronger is easily achieved. You speak of spoke count and spoke quality but neglect the crucial matter of building the wheels properly. A good builder can build a durable, lightweight, low spoke count wheel suitable for training as well as racing. Low spoke count + 29er wheel = pretzel, unless you're only doing sunday rides on district roads.
mtbride Posted January 28, 2015 Posted January 28, 2015 Wide lightning over crest any day, wider is the way to go recently, and they have a higher weight limit. And you can upgrade them to ceramic bearings if you want. Wider you can run lower pressures and the wider rim gives the sidewall a more secure platform so it won't burp as easy.
Psyrax Posted January 28, 2015 Posted January 28, 2015 Like Keith Bontrager once said: " Strong , Light , Cheap - Pick two"
NickGM Posted January 29, 2015 Author Posted January 29, 2015 R5,999 at the mo - but still much cheaper than quoted. Thanks! It definitely is. Only thing i ever have to replace in my hopes are the freehub baring which costs about R100. I think Chris willemse cycles sell crest with hopes for some super cheap price. 5.8k or something. Have a look
Captain Fastbastard Mayhem Posted January 29, 2015 Posted January 29, 2015 I have often played with the thought of upgrading my current wheels (the standard Anthem X wheels - Giant P-XCR) for a while now and to be honest I imagined it would be as easy as walking into my LBS and asking for an upgrade. I assume there is benefit in going to a wheel-builder with regards to cost and customisation. So my question is as follows: are there any recommended wheel builders in Johannesburg? Thanks very much and sorry for the hijack.Summit Cycles. Owned and run by or very own Sherriff. He knows how to lace a wheel..
sometime Posted January 29, 2015 Posted January 29, 2015 I have often played with the thought of upgrading my current wheels (the standard Anthem X wheels - Giant P-XCR) for a while now and to be honest I imagined it would be as easy as walking into my LBS and asking for an upgrade. I assume there is benefit in going to a wheel-builder with regards to cost and customisation. So my question is as follows: are there any recommended wheel builders in Johannesburg? Thanks very much and sorry for the hijack.Giant PXCR is a pretty good stock wheelset weighing in at 1750g. I raced them hard for over 2 years with no problems. To get an appreciably lighter (and equally strong) wheelset will involve spending quite a bit of money.
RockCoach Posted January 29, 2015 Posted January 29, 2015 WTB rims - are stronger stiffer and cheaper than their Stans competitors. Have unseen technology built into them like UST compliance so valve and tape saves weight over full UST rims, 4D drilling so spoke holes line up exactly with the hub, centre I-beam for extra rigidity... I'd recommend the i19s for you for a fast and light wheelset. Hope hubs. Sorted.
David Marshall Posted January 29, 2015 Posted January 29, 2015 This is, with respect, just nonsense. Lighter and stronger is easily achieved. You speak of spoke count and spoke quality but neglect the crucial matter of building the wheels properly. A good builder can build a durable, lightweight, low spoke count wheel suitable for training as well as racing.I agree that you need to build properly but disagree on low spoke count and durability in the same wheel. Rims and spokes fail from fatigue. Fatigue is as a result of flexion - bigger rim diameter, less spokes – more flexion. You can reduce flexion with higher spoke tension to a point but after that you reduce lateral strength. When Robyn de Groot went A over T in the road worlds a while back what caused her wheel to collapse? I only saw a few seconds on tv but my money is on the following – High lateral force (she was cornering hard) combined with high spoke tension and with the torsional force created by a strong rider powering out of a corner. Who or what is to blame? The rider? The builder? The rim? The spokes? My opinion - whoever designed the wheel. The only way to increase the lateral strengh of a wheel in that situation is with a hub that the flanges are further apart - but I cant see her lining up on a SS – or more spokes. I'll go for the latter. Right now I am building a training wheel for a 90+ kg customer. Zipp 404 (20 hole) on a Powertap hub. Would I recommend it for that application? No.Will I build it? Sure, I will build it to the best of my ability and it will most probably be satisfactory.Will I gaurentee the spokes? Not a chance. Similarly I built a set of “favourite” 26” wheels. Good hubs, quality carbon rims and lazer spokes. The customer wants to rebuild the hubs onto 29” carbon rims. Disadvantage for 29” (my opinion again) they have 28 holes - flexion dramatically increases with increased rim diameter. Again a 90+kg rider. I have been given carte blanche to select any brand of rim to give him a good “strong” wheel. Knowing that he does stage races, what advice should I give him? I will open my mouth and he will make the call.
GoLefty!! Posted January 29, 2015 Posted January 29, 2015 Low spoke count + 29er wheel = pretzel, unless you're only doing sunday rides on district roads. This is something the 29er crowd don't get. its like bent wheels are just one of those things. I think ven Shimano added more spokes to their XTR 29er wheel sets!
JXV Posted January 29, 2015 Posted January 29, 2015 I think its easier to lose weight on a wheel by choosing tyres carefully and running a little less sealant.Dropped 400g off my 29er wheelset for R900 by swopping UST Ardents out for a Spez Ground Control/Purgatory combo. They may be less resilient than USTs but I like the lighter feel and they grip better in the corners.Going from 32 to 28 spokes will not win you as much weightloss.
NickGM Posted February 4, 2015 Author Posted February 4, 2015 So if anyone is interested in the weight savings: I bought the Stan's crest ZTR with Hope evo 2 hubs and found the front wheel to be 820g, and rear to be 930g. That is the weight of the hub, spokes and rims - nothing else. I then weighed my old wheels (again, hubs, spokes and rims only) which were the alexrims synchros with shimano hubs and got front and rear wheel weights of 1230g plus 1340g respectively. That was a total weight saving of 820g, more than I was expecting. Come to think of it, there was old rim-tape on one of my old rims, so lets call the savings an even 800g. Admittedly, not all weighed on the same scale, but both on good quality bike mechanic "hanging" scales, as per pic below.
Guest Smimby Posted February 4, 2015 Posted February 4, 2015 Hi Chaps - so I think I'm going to go with ZTR crests. I've spoken to a wheel builder who will do ZTR crests on Novatec hubs for R5k-ish, and or ztr crests on Hope Pro hubs for R7K-ish. People seem to write glowing reviews for Hope Pro hubs, whereas with Novatec is a bit more "Yeah they're OK". Is it worth the extra money to go hope?Look at CWC they have hope pro 2 with crest for 5500
dev null Posted February 4, 2015 Posted February 4, 2015 I think its easier to lose weight on a wheel by choosing tyres carefully and running a little less sealant.Dropped 400g off my 29er wheelset for R900 by swopping UST Ardents out for a Spez Ground Control/Purgatory combo. They may be less resilient than USTs but I like the lighter feel and they grip better in the corners.Going from 32 to 28 spokes will not win you as much weightloss. I can vouch for that tyre combo. They transformed my riding. Now much more confident. Did the rooty descends at Harkerville without blinking and have not yet let me down. Previously I had Maxxis UST tyres, which were an absolute dog. As to the wheels. I had a wheel builder build my son a set with Industry 9 hubs and ZTR Crests, and he loves them.
Pooyan Posted February 4, 2015 Posted February 4, 2015 Giant PXCR is a pretty good stock wheelset weighing in at 1750g. I raced them hard for over 2 years with no problems. To get an appreciably lighter (and equally strong) wheelset will involve spending quite a bit of money. You are refering to the PXCR 1 wheelset from Athem X Adv: http://www.giant-bicycles.com/en-us/gear/product/p.xcr1.29er.alloy.xc.wheelsystem/558/50288/#features The PXCR (from Anthem X) should be more than 2kg.
wepat Posted February 4, 2015 Posted February 4, 2015 Hi Chaps - so I think I'm going to go with ZTR crests. I've spoken to a wheel builder who will do ZTR crests on Novatec hubs for R5k-ish, and or ztr crests on Hope Pro hubs for R7K-ish. People seem to write glowing reviews for Hope Pro hubs, whereas with Novatec is a bit more "Yeah they're OK". Is it worth the extra money to go hope? Yes I have this combo great rims and Hubs you just need to get used to the noise when you free wheel
NickGM Posted February 4, 2015 Author Posted February 4, 2015 Just so people know, I have actually bought wheels now (Hope Pro, stans ZTR crest). I've commented about the weight further up this page if anyone is interested. More importantly, I hope they last a lot longer than my previous wheels. Anyway, I appreciate the suggestions - although there isn't anything i can do about it now!
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