New Set of Disc Wheels..

[Cyclist33]

It's a fair statement. I'd imagine that the standard bontrager wheels are a large part of the compromise on a carbon Trek with cable/hyd discs and 11spd 105.

It could well be. Or it might not be.

Back to my questions then. What's the upgrade budget and what effect on the La Vuelta chances are we trying to achieve.

If op can also weigh up the current wheelset naked weight ie like for like what we can search Google for, that will help us find a solution.

 

[mr_s81]

People often use the word need when they really mean want.

Like my 3 year old. I 'need' that new toy.

 

[Yellow Saddle]

If I understand the problem correctly, it is a matter of brake disc incompatibility? There are two standards - ISO 6-bolt and Centrelock licensed by Shimano. 6-bolt can be converted to centrelock with a special adapter.

But the real solution is to not do something silly and replace the wheels. That would be pointless. Go for a ride, drink a beer. Enjoy life. Forget about the wheels.

 

[Boon 51]

And the issue is?

I've no wish to reopen the great wheel debate of 2015, but how much are you wanting to spend and how is this going to affect your La Vuelta chances?

Now your doing it... Where did I mention La Vuelta..

 

[Yellow Saddle]

Now your doing it... Where did I mention La Vuelta..

I am sure it was a metaphor for competitive riding.

If it isn't, then you have to qualify "too heavy" and say what the wheels are too heavy for.

 

[Citius]

Jowwy is going to be so cross when he sees this thread...

 

[Boon 51]

The weight issue for me comes because people print facts that are not true.. On Trek's web site they said the Domane 4.3 disc was 8.7 kg without pedals.. so 9 kg is the weight with pedals, so I bought the bike but after riding it around I thought this is heavy so I weighed the bike and it was just on 10kg, when I went back to the Trek website they had removed all the weights from the info, this was earlier in the year.. I think bikeradar quoted 8.7 as well.
I did in fact buy a Emonda SL 8 Dura Ace ealier which is 7kg and that's what the bike weights.. so the bikes are just on 3 kg different and when you climbing out of a quarry like I did yesterday and its 52c in heat 3 kilos is a lot?

 

[Citius]

I did in fact buy a Emonda SL 8 Dura Ace ealier which is 7kg and that's what the bike weights.. so the bikes are just on 3 kg different and when you climbing out of a quarry like I did yesterday and its 52c in heat 3 kilos is a lot?

That 3kg would certainly have cost you a handful of seconds, potentially. Were you being timed?

 

[gbb]

I suspect the thought police are at work because you didnt (in their opinion) give the correct reasons for wanting new wheels. We all (well most of us anyway) started on stock heavy wheelsets that generally come on standard bikes. Many of us have upgraded and in our humble opinion, have benefitted. Lighter wheels feel better....I cant quantify it and to be honest, dont have to. I wanted to, I could afford to, therefore I can.
Thats all that matters.

 

[Cyclist33]

Okay that adds some useful numbers into the mix.

Was it 10 kg before or after Conti? Let's say the conti tyres weigh 200 g, and the bontrager ones 360. Total weight saved 320 g. If 10 kg pre conti then now the bike weighs 9.68. If 10 kg after the tyre swap then now the bike weighs 10 kg.

Let's say you're not entering La Vuelta but want to get your new bike weight down towards that of your Emonda. So 8.5 kg as a halfway compromise.

Let's assume the bontrager wheelset is really heavy for its type, say 2.2 kg including rim tape and freehub but excluding skewers and the disc mechanism. (I've set up the situation like this because wheel weights are usually without skewers and I'm going to window shop rim brake wheels because there's more choice.)

So in this scenario I'm trying to lose either 1.18 or 1.5 kg by buying lighter wheels. Depending whether the 10 kg bike weight is pre or post tyre swappable. So, I'm looking for wheels that weigh either 1.02 kg or 0.7 kg for the pair, assuming bontrager weight of 2.2 kg.

I'll have a look on Google, but I ain't confident!!

 

[Yellow Saddle]

The weight issue for me comes because people print facts that are not true.. On Trek's web site they said the Domane 4.3 disc was 8.7 kg without pedals.. so 9 kg is the weight with pedals, so I bought the bike but after riding it around I thought this is heavy so I weighed the bike and it was just on 10kg, when I went back to the Trek website they had removed all the weights from the info, this was earlier in the year.. I think bikeradar quoted 8.7 as well.
I did in fact buy a Emonda SL 8 Dura Ace ealier which is 7kg and that's what the bike weights.. so the bikes are just on 3 kg different and when you climbing out of a quarry like I did yesterday and its 52c in heat 3 kilos is a lot?

I don't get this. Why not just use your 7kg bike when doing quarry climbs and keep the heavier one for when you do quarry descends?

 

[gbb]

Dont fall into the very often used trap Boon......dont try to justify it.

 

[Yellow Saddle]

That 3kg would certainly have cost you a handful of seconds, potentially. Were you being timed?

I am not familiar with the sport of Quarry Climbing so I don't know if it is a timing sport or sport where you get points for technique, but let me assure you, if I was in a quarry that's 52 Degrees C, I'll also try and get out there as quickly as possible.

 

[Cyclist33]

Dont fall into the very often used trap Boon......dont try to justify it.

Well... He already did in the original post. He said the wheels were heavy as usual so needed replacing.

The justification came first in this instance. I want to get into the specifics so I can look for a solution.

To be honest it would've been much, much easier to suggest some options if Boon had said he wanted to replace the wheels for the sheer heck of it.

But, he didn't.

Stu

 

[winjim]

To be fair, the actual question was about disc rotor compatibility, and has been answered.