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 Post subject: Disc size
PostPosted: Wed Dec 26, 2012 4:40 pm 
Posts: 317
Does size matter :oops:

Im about to order some rotors for new wheels and cant decide if i should get 180 or stick with 160. Does 180 give that much more improvement for general trail riding?

Im getting a spare set of wheels so that I can quickly switch between mud tyres and normal tyres rather than change the tyres twice a week. If I go for the 180's ive got to get 4 discs and a caliper mount otherwise every time i change wheels/tyres ill have to move the calipers.

The other option is to run a 180 up front and stick with the 160 on the back, I can lock the 160 rear fairly easily so figure i dont need any more power there. Does anyone run a large disc at the front?

Your thoughts please


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 Post subject: Re: disc size
PostPosted: Wed Dec 26, 2012 5:29 pm 
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Location: Southend
Seeing as the majority of breaking should be done by the frontthe norm for brake balance is 180 up front and 160 out back

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 Post subject: Re: disc size
PostPosted: Wed Dec 26, 2012 5:39 pm 
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Posts: 171
Location: Stanford-le-Hope
unityjon wrote:
Seeing as the majority of breaking should be done by the frontthe norm for brake balance is 180 up front and 160 out back

Sent using the force...


I'm running a 203 on the front and a 180 on the rear. The rear is fine but I still feel there's not enough stopping power on the front. Maybe it's because I'm 19 stone though!!

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Rumblefish Elite 29er
Specialized P1AM


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 Post subject: Re: Re: disc size
PostPosted: Wed Dec 26, 2012 6:00 pm 
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Location: Riding my bike somewhere
unityjon wrote:
Seeing as the majority of breaking should be done by the frontthe norm for brake balance is 180 up front and 160 out back

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As this.... unless your into big speeds down bigger hills stick with 180 front and 160 rear.....

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Whyte G-160RS
YETI SB95A


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 Post subject: Re: disc size
PostPosted: Wed Dec 26, 2012 6:17 pm 
Posts: 317
Cool, cheers for the replies, will run a 180 on the fronts and the existing 160s on the rear


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 Post subject: Re: disc size
PostPosted: Wed Dec 26, 2012 7:36 pm 
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Posts: 1542
Location: South Ockendon
Dont forget when swapping wheels over you will need to swap the rear cassette over too

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I'd rather ride me bike than the Wife..


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 Post subject: Disc size
PostPosted: Wed Dec 26, 2012 7:54 pm 
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Posts: 924
Location: Westcliff-On-Sea
Good call Harry...

I've been contemplating having a 2nd set of wheels (set with dry/general and other set with pure mud tyres) and thought it easier to swap wheels and cassette each time nested of tyre swapping.


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 Post subject: Re: disc size
PostPosted: Wed Dec 26, 2012 10:47 pm 
Posts: 317
Yep figured that should just be a quick thing to do. certainly less hasle than changing the tyres.
It takes a good 45 minutes to swap 2 tyres, and will get messy if I choose a tubeless option. the mud x are particularly difficult to get over the rims.


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 Post subject: Re: disc size
PostPosted: Wed Dec 26, 2012 10:55 pm 
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Posts: 1166
This is what I'm going to do as I'm fed up of swapping to mud tyres and then something better rolling for the commute. Probably just going to get a cheap pair of wheels from Superstar, they have some for £130 using their rims and switch hubs. Already run 180/160mm but probably won't get another pair of icetech rotors for the cheaper wheels.


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 Post subject: Re: disc size
PostPosted: Wed Dec 26, 2012 10:59 pm 
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Posts: 1542
Location: South Ockendon
No real reason to really change tyres that often unless your doing a lot of road miles, mud x are fine all year round. I run mine most of the year and might stick high rollers on in the summer months if its very dry

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I'd rather ride me bike than the Wife..


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 Post subject: Re: disc size
PostPosted: Wed Dec 26, 2012 11:06 pm 
Posts: 317
The mid week rides are atleast 6 miles of road and then upto another 15 gravel or tarmac track miles, the mud x arnt very smooth riding on that and they are quite soft compound so would end up wearing through them quickly

Ive been looking at the superstar wheels as well but with a mavic UST rim which come out at about 250, these would be my main wheels with the originals as the mud option.


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 Post subject: Re: disc size
PostPosted: Wed Dec 26, 2012 11:34 pm 
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Posts: 1330
Location: braintree , and leytonstone
If only changing tyres for shortish commutes surely better to buy a cheap hybrid with road tyres if your looking at £250 you must be able to buy a 2nd hand commuter for that!

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trees dont move!


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 Post subject: Re: disc size
PostPosted: Wed Dec 26, 2012 11:38 pm 
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Posts: 500
Location: Stanford-le-hope
Had a couple of sets of wheels a few years now and you can't beat it! You can even change your mind on route, or when you get to a ride (obviously if you've driven there) , what tyres to use.
Get 2 matching cassettes and check each wheel with a steel rule when mounted on the bike just to make sure both cassettes are exactly on the same alignment. Saves you fine tuning the rear mech when you swap wheels. If you can match the new rear hub to your existing you'll be spot on.

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 Post subject: Re: disc size
PostPosted: Wed Dec 26, 2012 11:38 pm 
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Posts: 1166
Against £130 for a pair of wheels (already have a spare cassette) getting another bike for commuting would probably be more expensive and I don't really have much room for storage but I would never turn down another bike!


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 Post subject: Re: disc size
PostPosted: Wed Dec 26, 2012 11:44 pm 
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Posts: 500
Location: Stanford-le-hope
These are good for the money
eBay item 321045338950.

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