TRP Spyre on DoubleCross, spoke clearance?
05-26-15, 07:54 AM
#1
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TRP Spyre on DoubleCross, spoke clearance?
I've been looking at using 32h Velocity Aileron rims on a Doublecross disc build, and have heard there might be a spoke clearance issue with the brakes with 3x lacing. Any chance there's anyone here thats built up that combo? Looking for some insights, thanks.
05-26-15, 08:29 AM
#2
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Huh?
oh, wait, is it a disc brake frame?
If so, then maybe there is some concern.
So build 2X instead.
The differences in strength isn't worth losing any sleep over.
oh, wait, is it a disc brake frame?
If so, then maybe there is some concern.
So build 2X instead.
The differences in strength isn't worth losing any sleep over.
05-26-15, 11:45 AM
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Changing the cross pattern won't change the brake clearance. If anything, reducing crosses will bring the spokes outboard a hair, not inboard, so it's he wrong direction.
Build the wheel the way you plan to, and if necessary, space the disc outboard a bit more.
However, I try to give manufacturers credit for some sense unless I know otherwise. The placement of discs with respect to both the locknut and spoke area is somewhat standard, and they're all the same, or at least within a narrow band. So the brake maker knows how much room he has to play with between the disc and spokes, and I'd be surprised if they got that part wrong.
If you're really worried, follow Admiral Grace Hopper's advice. Mount the disc on the hub and attach both the brake and hub in the frame. Lay a straight edge from the flange out to the rim centerline and see how much room you'll have before committing to anything.
Build the wheel the way you plan to, and if necessary, space the disc outboard a bit more.
However, I try to give manufacturers credit for some sense unless I know otherwise. The placement of discs with respect to both the locknut and spoke area is somewhat standard, and they're all the same, or at least within a narrow band. So the brake maker knows how much room he has to play with between the disc and spokes, and I'd be surprised if they got that part wrong.
If you're really worried, follow Admiral Grace Hopper's advice. Mount the disc on the hub and attach both the brake and hub in the frame. Lay a straight edge from the flange out to the rim centerline and see how much room you'll have before committing to anything.
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FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
05-27-15, 07:41 AM
#4
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Instead, pick an off center drilled rim ? then the disc side spokes will, angle away .. a bit more..
Did you buy the Spyre caliper already? the disc to inside face of the caliper should not be that much wider than a typical fixed pad and adjustment fittings like BB-5 or 7
Did you buy the Spyre caliper already? the disc to inside face of the caliper should not be that much wider than a typical fixed pad and adjustment fittings like BB-5 or 7
05-27-15, 11:09 PM
#5
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Well I will need to order everything and don't have any pieces to measure, so just looking for some input and to see if anyone's built one up yet. Thanks for the replies, I also hope that the issue is standardized enough to not worry about.
05-28-15, 04:05 AM
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Originally Posted by fietsbob
Instead, pick an off center drilled rim ? then the disc side spokes will, angle away .. a bit more..
Rear, an OC rim oriented to improve spoke/brake clearance doesn't sound so hot.
05-28-15, 08:01 AM
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Originally Posted by feejer
I've been looking at using 32h Velocity Aileron rims on a Doublecross disc build, and have heard there might be a spoke clearance issue with the brakes with 3x lacing. Any chance there's anyone here thats built up that combo? Looking for some insights, thanks.
I will say that I wouldn't count on the disc tab being welded perfectly straight/accurately. It seems the majority of frames I've built (my Straggler included) had less-than-straight front disc tabs. Most shops should have a disc alignment tool. On the Straggler, I wound up bending the tab ~1mm out or so which could be the difference between the spokes hitting or not.
