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6" Front disc vs 8"? Is there a difference?

Sept. 26, 2006, 11:21 a.m.
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Joined: July 12, 2006

I am building up a new front wheel to go with the new fork (06 Z1 sl). I was running a 6" disc (centreloc), bmx axle, w/ Xt hydro brakes [HTML_REMOVED] goodrich lines. The feel and modulation blew away my last hfx 9's! I need a new rotor anyway, so I am considering just getting an adapter to run 8". Has anyone done this upgrade or have feedback about the difference??

Thanks!

Sept. 26, 2006, 11:30 a.m.
Posts: 3833
Joined: June 4, 2006

You'll notice a big improvement in power. Definatly go for it.

FAMILYBIKERIDE
823/Ringle rear wheel FS!
http://bb.nsmb.com/showthread.php?t=103825

i went black over two years ago and haven't gone back

Sept. 26, 2006, 11:38 a.m.
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Joined: Aug. 20, 2005

There will be a difference and quite noticeable at that but it does depend upon what and how your ride as well, as to whether its actually needed, however if its cheap id say go for it.

Sept. 26, 2006, 11:54 a.m.
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Joined: July 12, 2006

There will be a difference and quite noticeable at that but it does depend upon what and how your ride as well, as to whether its actually needed, however if its cheap id say go for it.

Cheap is a relative word. If I get noticeable results then it is money well spent, with no results then even $60-$70 is a waste.

Were you asking the style or skill of my riding? Style varies from Dh/FR at Whistler a few times a year and fromme to "soft-core" local BC trails like the shed and mt. softball. Skill depends on the day…

Sept. 26, 2006, 12:06 p.m.
Posts: 9016
Joined: Nov. 23, 2002

I have been using a 7" rotor up front and it offers plenty of power for everything I need. There IS a difference between 7 and 8 but it is not worth the change for me.

From 6" to either 7 or 8 will make a world of difference and is well worth the cost.

dear DW,
since you got like a million bucks now, can i borrow $2850 for a Revolt frame?

thanks,
steve

Sept. 26, 2006, 12:07 p.m.
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Joined: Dec. 27, 2002

Dont think of it as increased "brake power" rather a 25% decrease in finger effort (going from 8 to 6)
Im sure if you were riding at full tilt and you hammered your XT front brake (with a 6 inch rotor) you could lock the wheel up. With an 8 inch it will take less finger effort obviously.

Sept. 26, 2006, 12:46 p.m.
Posts: 1324
Joined: Aug. 20, 2005

Cheap is a relative word. If I get noticeable results then it is money well spent, with no results then even $60-$70 is a waste.

Were you asking the style or skill of my riding? Style varies from Dh/FR at Whistler a few times a year and fromme to "soft-core" local BC trails like the shed and mt. softball. Skill depends on the day…

True true and i meant riding in general but i think you could benefit from a bigger disc up front as it will also increase cooling so less brake fade.

Sept. 26, 2006, 8:33 p.m.
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Joined: July 12, 2006

thanks for the feedback. I am going to go with the 8" setup. I have already ordered the parts!

Sept. 27, 2006, 3:10 a.m.
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Joined: Nov. 19, 2002

Better braking power, plus better heat dissipation.

It is easy to dodge our responsibilities, but we cannot dodge the consequences of dodging our responsibilities.
- Josiah Stamp

Every time I see an adult on a bicycle, I no longer despair for the future of the human race.
- H.G. Wells

Sept. 27, 2006, 3:40 a.m.
Posts: 1426
Joined: Feb. 18, 2005

but also more weight, and more stress on fork bushings

and larger rotor has more vulnerability to taking damage if riding technical trails / skinnies?

8" on front and 6" on rear seems to work good

Mythic / Da Kine / Esher Shore / Freeborn

http://hampsteadbandit.blogspot.com/

Sept. 27, 2006, 3:25 p.m.
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Joined: July 29, 2006

more leverage on an 8 inch stops it better
it also has more time to cool down so it doesnt heat up as fast
it also looks nicer lol
theres not much point to 8 inch rears though you cant get much more power after a 6 inch youll just skid easier

looking for 500x3.25 spring
fs: 2004 norco ht

Sept. 27, 2006, 3:34 p.m.
Posts: 4128
Joined: April 9, 2005

I go for big, I still found in some situations (snow or new pads or heavy usage) my hayes can be lacking in power. just makes life more reliable. if you're getting new bits, seems like a good time to upgrade…

Sept. 27, 2006, 4:18 p.m.
Posts: 5189
Joined: March 21, 2005

I go for big, I still found in some situations (snow or new pads or heavy usage) my hayes can be lacking in power.

well, theres you're first problem right there…

wow, M&M, you're a fucking dick!

don't be so politically correct, this is stacy kohut, not fucking rick hansen your talkin too……..

Sept. 27, 2006, 5:52 p.m.
Posts: 4128
Joined: April 9, 2005

lol…agreed

Sept. 27, 2006, 6:27 p.m.
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Joined: June 1, 2006

An 8" rotor is much better. It offers more leverage to the wheel (well, in simple terms, you can sort of compare it to leverage) thus stopping better. Id go for the upgrade, worth while

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