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I've got a set of brand new 2020 Lyrik Ultimate forks that I bought in December last year. They have been sitting in the box waiting while I get the rest of the build together.
I've got the frame now and made a mock up just to see how its all looking together so far.
But I've noticed that the 110mm spacing axle is actually smaller at 109.11mm measured with digital calipers.
Getting the wheel in is tricky, the legs have to be flexed apart to get the hub in place.
I have Cane Creek Helm forks, boost axle, measured it and its 109.98mm on the digital calipers.
I have 2020 Rockshox Boxxers with a 20x110mm boost axle that measures 110.01mm!
These are virtually spot on.
I'm concerned that the legs are possibly slightly bent or the drop out surface hasn't been machined correctly.
I've emailed the retailer to get them inspected under warranty.
I wonder if it even really matters to be honest. The legs flex apart a fraction and the wheel goes in.
But after spending a fair bit of money on them I'd feel better if the issue wasnt there!
But I'm wondering if anyone else has had this issue? Any input appreciated.
Can't say I've measured any of my rockshox forks. Makes sense to why Ohlins and now Fox have a floating pinch bolt axle setup.
My 2019 Lyrik Ultimates are exactly the same
I haven’t measures them, but they definitely need flexing apart slightly to get the wheel in
I'm gonna go and say they're probably within tolerances.
You might have a tiny amount more stiction due to the fork stanchions/lowers rubbing, that's why Fox have introduced the adjustable dropout on the 36/38.
Is it because the dropout surface is hoping for torque cap/hub interface rather than standard boost axle?
Please bring back 20x110
I’m gonna go and say they’re probably within tolerances.
You might have a tiny amount more stiction due to the fork stanchions/lowers rubbing, that’s why Fox have introduced the adjustable dropout on the 36/38.
This was my thought that it could cause a bit more stiction. But hard to say if it actually would.
I'd like to know more about whats considered within spec but there doesnt seem to be anyone at sram I could email to ask a technical question?
sram tech centre uk webiste says its for dealers only and says you should go to retailer. Dont want to send them back and it potentially take months in the current climate for them to be sent back saying its within spec.
Reassuring that crazybaboon's forks are the same though.
But cant help feel its a bit poor...
Got a set of Pike Ultimates that are the same..
Take the lowers off, turn them upside down and give them a few sharp pulls. It is such a small difference they will soon be at 110. If they go slightly wider it’s not the end of the world as the axle will pull them together.
Ok thanks I'm starting to feel a bit better about it now seeing others like pike ultimates being the same.
I appreciate its a very small difference and I sound like a pedantic ****. But these small things annoy the life out me!
Take the lowers off, turn them upside down and give them a few sharp pulls. It is such a small difference they will soon be at 110.
Yeah considered this too that I probably could pull on them a bit to widen them. I might actually try that.
I'm waiting to hear back from retailer, they were bought online from germany so would have to be sent back to retailer there for warranty. Seems with covid19 theres a good chance warranty turn around times will be longer than usual.
Are they parallel? If not, is it the sliders or the stanchion that are out?
This info will help work out how much difference it might make in use, particularly at full travel.
Given it's always worth checking the oil level in the lowers with new forks, it's worth checking.
They certainly look parallel. Are you asking if the lowers look twisted?
From eye they look perfectly straight.
Not sure I could spot any small deviation by eye.
Sorry, I'm a bit thick, is that what you're asking? Any other way I could check if they are parallel?
I've just received a reply from sram saying
"
thanks for reaching out.
Please notice that our Lower Legs have tolerances of +/- 1mm.
So your fork's good to go.
Regards,
SRAMTech EU
"
So I guess that settles it then!
Take the lowers off, turn them upside down and give them a few sharp pulls.
my CRC OEM Pikes are the same - assumed they'd been squashed slightly in transit but I'm going to go have a good tug on them now.
Is there any need to bend the lowers? Surely once the axle is in they are going to be the right distance apart anyway (assuming the axle/hub/spacers are the correct length).
Is there any need to bend the lowers? Surely once the axle is in they are going to be the right distance apart anyway (assuming the axle/hub/spacers are the correct length).
This is a good point. Assuming everything else is correct, then once the hubs in I suppose everything should be aligned correctly and therefor not really be causing any more stiction.
I'll leave mine as is.
Thanks for all the replies. I think my minds at rest now.
Being off work really isn't good for me...
Fyi....My lyrics are same.
Just a little awkward to get wheel in.
It seems that this is fairly common then.
I was sent part of a sram technical drawing of the fork that shows the drop out and indeed shows the 1mm +/- tolerance
Boost Lyrik Ultimates with Zipp wheels and they’re comfortably snug. More of a fiddle getting them in than non-boost. I just put it down to the bigger interface giving less wiggle room.
Really?
squashed slightly in transit but I’m going to go have a good tug on them now.
You’re all just going to leave that there? Unremarked?
This place is slipping
More of a fiddle getting them in than non-boost
Sorry, my comment should have read “than non torque cap”
Stay safe