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Fitting 28x20 oval blades to 28x19 fork crown

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Fitting 28x20 oval blades to 28x19 fork crown

Old 11-07-14, 03:26 PM
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calstar 
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Fitting 28x20 oval blades to 28x19 fork crown

Any issue with Fitting 28x20 oval blades to 28x19 fork crown? Crown and blades from Nova are linked below.

thanks, Brian

NOVA CYCLO-X FORK CROWN FULL SLOPE 28.6 7° OFFSET :: FORK CROWNS :: Nova Cycles Supply Inc.

NOVA ROAD OVAL Disk Brake fork blade 1.1 x 24 Oval :: TUBES STEEL :: Nova Cycles Supply Inc.
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Old 11-07-14, 04:41 PM
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I actually have that combo on my bench right now. Sometimes it takes a little blacksmithing. I think those blades all start out as 24mm or something like that, so it depends on the smoosh that the tube manufacturer applies
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Old 11-07-14, 06:37 PM
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Originally Posted by unterhausen View Post
I actually have that combo on my bench right now. Sometimes it takes a little blacksmithing. I think those blades all start out as 24mm or something like that, so it depends on the smoosh that the tube manufacturer applies
Curious if you're using a disc set up and if you're going to use the dropouts they suggest using. If you do use them are you going to install them "upside down" so the opening is more forward than downward facing to help prevent wheel "ejection" due to loading from the disc? The pic of the dropouts on the Nova site looks like the center of the dropout has some forward offset(maybe not) so if it is used facing forward the trail number will decrease. I posted the question as I'm going to build using the crown/blades, any info on your build will be much appreciated.

thanks, Brian

NEW NOVA DROPOUT FRONT PLUG-IN STYLE with eyelet FOR DISK BRAKE 1.1 FORK BLADE :: FORK DROPOUTS :: STEEL DROPOUTS :: DROPOUTS :: Nova Cycles Supply Inc.
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Old 11-07-14, 07:35 PM
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haven't decided on the dropout. When I bought them, they didn't have a dropout that fit. They said they did, but the gap was huge. The dropout issue put the project on hold. It seems like putting them on backwards makes a pretty extreme angle, I wish they had a better solution

Looking again, it seems like the eylet is supposed to go in front. I suspect that gives enough of an angle to keep the wheel from being ejected

Last edited by unterhausen; 11-07-14 at 07:39 PM.
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Old 11-07-14, 09:26 PM
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I never bothered to measure crown sockets or blades. I usually squish the blades slightly in the required axis (with some back and forth) until it fits.

The trail won't change if you take the offset into account. I check the rake with the dropout in place.

I build a fork with that blade/dropout combo. With the eyelet at the rear the axle slots is facing slightly forward. Plus the dropout face is recessed to hold the wheel. Here is a pic.

http://3.bp.blogspot.com/-NDzEN2sGR1...611_213506.jpg

Btw the blade has a large end diameter. My bender couldn't handle it and I had to use one from a friend.
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Old 11-07-14, 10:44 PM
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yeah, they are huge blades, I'm impressed you could bend it

How was the fit of those dropouts?
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Old 11-08-14, 05:38 AM
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If I remember right the fit was tight enough that a bit of sanding made it fine.

My bending form (wood) is grooved at a 1/2" dia. My friend has the Hammill (I think) with the v-groove.
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Old 11-08-14, 09:52 AM
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Thanks for the pic and info on the dropouts tuz. Also took a look at the fork build on your blog, nice

Brian
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Last edited by calstar; 11-08-14 at 10:15 AM.
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