Benefit of thru axle
#1
Mother Nature's Son
Thread Starter
Join Date: Mar 2016
Location: Sussex County, Delaware
Posts: 3,107
Bikes: 2014 Orbea Avant MD30, 2004 Airborne Zeppelin TI, 2003 Lemond Poprad, 2001 Lemond Tourmalet, 2014? Soma Smoothie
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Quoted: 852 Post(s)
Liked 1,433 Times
in
815 Posts
Benefit of thru axle
Yesterday I received a new wheel-set for disc brakes. The wheels come with both the QRs and thru axle set ups. I have never used thru axles before. It is my understanding that the main benefit of the TAs is the stiffening of the wheels and therefore less stress on the wheels when braking.Does that also mean that the braking is faster? Will a wheel stay true longer? Do the TAs make it more difficult and longer to fix a flat while out riding? If that is the case, would it make any sense, or for any other reason, to only use the TAs on the front wheel. Obviously, the front gets more stress when braking.than the rear wheel. I am waiting for rotors for the new wheels before I mount them and I am looking for input regarding the using of the TAs compared to the QRs. Thanks and I appreciate any input regarding these questions.
#2
Senior Member
Join Date: Jul 2008
Location: Minas Ithil
Posts: 9,173
Mentioned: 66 Post(s)
Tagged: 0 Thread(s)
Quoted: 2432 Post(s)
Liked 638 Times
in
395 Posts
With q/r's you usually have to make some fine tune adjustments to center the rotor between the pads when installing the wheel. Not that it's a huge deal unless you're doing a wheel swap in a race. But with thru axles they line up in the same place every time. That's the only real difference I've experienced.
#3
Mother Nature's Son
Thread Starter
Join Date: Mar 2016
Location: Sussex County, Delaware
Posts: 3,107
Bikes: 2014 Orbea Avant MD30, 2004 Airborne Zeppelin TI, 2003 Lemond Poprad, 2001 Lemond Tourmalet, 2014? Soma Smoothie
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Quoted: 852 Post(s)
Liked 1,433 Times
in
815 Posts
I like that because it seems like I have to adjust the rotors all the time. That change alone makes the TAs worth mounting. Thanks Lazyass!
#4
Senior Member
Join Date: Oct 2017
Location: Chapel Hill NC
Posts: 1,683
Bikes: 2000 Litespeed Vortex Chorus 10, 1995 DeBernardi Cromor S/S
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 645 Post(s)
Liked 797 Times
in
446 Posts
Yesterday I received a new wheel-set for disc brakes. The wheels come with both the QRs and thru axle set ups. I have never used thru axles before. It is my understanding that the main benefit of the TAs is the stiffening of the wheels and therefore less stress on the wheels when braking.Does that also mean that the braking is faster? Will a wheel stay true longer? Do the TAs make it more difficult and longer to fix a flat while out riding? If that is the case, would it make any sense, or for any other reason, to only use the TAs on the front wheel. Obviously, the front gets more stress when braking.than the rear wheel. I am waiting for rotors for the new wheels before I mount them and I am looking for input regarding the using of the TAs compared to the QRs. Thanks and I appreciate any input regarding these questions.
#5
Mother Nature's Son
Thread Starter
Join Date: Mar 2016
Location: Sussex County, Delaware
Posts: 3,107
Bikes: 2014 Orbea Avant MD30, 2004 Airborne Zeppelin TI, 2003 Lemond Poprad, 2001 Lemond Tourmalet, 2014? Soma Smoothie
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Quoted: 852 Post(s)
Liked 1,433 Times
in
815 Posts
That makes sense regarding the stiffening of the forks and the handling, certainly a worthwhile benefit. But it also seems to me that I can see flex in the front wheel more prominently with disc brakes than with calipers. I will have to ride one bike and then the other immediately after to see if I that difference is true. Either way I will be using the TAs when I mount the wheels on my bike.
#6
Senior Member
Join Date: Jun 2002
Location: Montreal, Quebec
Posts: 5,921
Mentioned: 16 Post(s)
Tagged: 0 Thread(s)
Quoted: 1814 Post(s)
Liked 1,692 Times
in
973 Posts
You don't really have a choice on a bike that you already own. Either the frame and fork require through axles or they don't. You can't use through axles unless your frame and fork require them
#7
Senior Member
Except for bikes with alternator plates that allow you to have your choice, QR or TA (rear only) like the Salsa Fargo.
#8
Senior Member
#9
Mother Nature's Son
Thread Starter
Join Date: Mar 2016
Location: Sussex County, Delaware
Posts: 3,107
Bikes: 2014 Orbea Avant MD30, 2004 Airborne Zeppelin TI, 2003 Lemond Poprad, 2001 Lemond Tourmalet, 2014? Soma Smoothie
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Quoted: 852 Post(s)
Liked 1,433 Times
in
815 Posts
thru axles
Thanks everybody. I obviously have a lack of knowledge for thru axles. Does anyone have a comment on the stressing or not of the wheels with disc brakes and TAs. It seems to me with the rotor being more centered in the wheel that it would add stress to the rims, spokes and tires compared to caliper brake pads on the rim. Maybe due to centrifugal force. Maybe I am wrong and just over thinking it. It is more curiosity than anything. I love Bike Forums!
#10
Senior Member
With q/r's you usually have to make some fine tune adjustments to center the rotor between the pads when installing the wheel. Not that it's a huge deal unless you're doing a wheel swap in a race. But with thru axles they line up in the same place every time. That's the only real difference I've experienced.
Because they can be inserted rather easily by hand, the hub can still move slightly on the axle, which can result in disc rubbing. The best method (as with QRs...) is still to drop the bike on the wheel/weight it on the ground, then close the fastener.
#11
Senior Member
Join Date: Apr 2007
Location: Munising, Michigan, USA
Posts: 4,131
Bikes: Priority 600, Priority Continuum, Devinci Dexter
Mentioned: 14 Post(s)
Tagged: 0 Thread(s)
Quoted: 685 Post(s)
Likes: 0
Liked 55 Times
in
37 Posts
Thanks everybody. I obviously have a lack of knowledge for thru axles. Does anyone have a comment on the stressing or not of the wheels with disc brakes and TAs. It seems to me with the rotor being more centered in the wheel that it would add stress to the rims, spokes and tires compared to caliper brake pads on the rim. Maybe due to centrifugal force. Maybe I am wrong and just over thinking it. It is more curiosity than anything. I love Bike Forums!
#12
Senior Member
Join Date: Jul 2008
Location: Minas Ithil
Posts: 9,173
Mentioned: 66 Post(s)
Tagged: 0 Thread(s)
Quoted: 2432 Post(s)
Liked 638 Times
in
395 Posts
I mean, kind of...but not my experience with anything but a press-fit axle.
Because they can be inserted rather easily by hand, the hub can still move slightly on the axle, which can result in disc rubbing. The best method (as with QRs...) is still to drop the bike on the wheel/weight it on the ground, then close the fastener.
Because they can be inserted rather easily by hand, the hub can still move slightly on the axle, which can result in disc rubbing. The best method (as with QRs...) is still to drop the bike on the wheel/weight it on the ground, then close the fastener.
#13
Disco Infiltrator
Join Date: May 2013
Location: Folsom CA
Posts: 13,446
Bikes: Stormchaser, Paramount, Tilt, Samba tandem
Mentioned: 72 Post(s)
Tagged: 0 Thread(s)
Quoted: 3126 Post(s)
Liked 2,102 Times
in
1,366 Posts
It's funny, I’m on my second MTB with a thru axle. This one has a Rock Shox front 15mm and a QR141 rear, so I can take the back off without a tool but need an Allen wrench for the front. The previous bike had a Suntour Aion fork which has a clever QR front TA but I needed a wrench for the rear.
#14
Senior Member
Join Date: Jul 2005
Location: Ohio
Posts: 2,857
Bikes: Road bike, Hybrid, Gravel, Drop bar SS, hard tail MTB
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 1218 Post(s)
Liked 298 Times
in
214 Posts
I like thru axle
I like tooled through axle even better. (ones that need an Allen wrench to take off)
One of my QR bikes doesn't use a QR cam but uses a 5mm allen I like it better, it's a much cleaner look IMO
If I get a Flat the 10 second difference between a QR cam lever vs using a tool, is nothing in the time frame it takes me to dig out a tube, and swapping a tube.
I like tooled through axle even better. (ones that need an Allen wrench to take off)
One of my QR bikes doesn't use a QR cam but uses a 5mm allen I like it better, it's a much cleaner look IMO
If I get a Flat the 10 second difference between a QR cam lever vs using a tool, is nothing in the time frame it takes me to dig out a tube, and swapping a tube.
#15
Senior Member
Join Date: Oct 2013
Location: Mich
Posts: 7,352
Bikes: RSO E-tire dropper fixie brifter
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
Liked 2,943 Times
in
1,905 Posts
Rotational force is applied from two ongoing events when braking.
the wheel vs road surface
Or
The rider vs the wheel
If it were me, I'd determine which force is greater to decide what type of axle to go with.
the wheel vs road surface
Or
The rider vs the wheel
If it were me, I'd determine which force is greater to decide what type of axle to go with.
__________________
-Oh Hey!
-Oh Hey!
#16
Senior Member
Join Date: Jul 2005
Location: Ohio
Posts: 2,857
Bikes: Road bike, Hybrid, Gravel, Drop bar SS, hard tail MTB
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 1218 Post(s)
Liked 298 Times
in
214 Posts
Thru axle is simply for a stiffer fork, a more responsive fork to input from the bars, and a better feed back from the wheel to the fork to the bars to my hands. Which = a Much greater enjoyment. QR is like driving a car with worn out and loose tie rods.
I am the one steering, I'd like to be in control of that.
#17
Senior Member
I've never experienced movement between a wheel and fork legs using conventional quick release skewers. No play. But then I know how to properly tighten a quick release, unlike what I estimate to be 75% of the bike riding population.
I suppose if I were riding disks, thru-axles would be prudent to prevent the front wheel from ejecting, but since on road bikes, disks are heavy, fussy, and unnecessary, this is all moot.
Apart from the idiot-proofing benefit, thru-axles are just a time-wasting PITA.
I suppose if I were riding disks, thru-axles would be prudent to prevent the front wheel from ejecting, but since on road bikes, disks are heavy, fussy, and unnecessary, this is all moot.
Apart from the idiot-proofing benefit, thru-axles are just a time-wasting PITA.
Last edited by Dave Mayer; 11-25-18 at 01:13 AM.
#18
For The Fun of It
Join Date: May 2007
Location: Louisissippi Coast
Posts: 5,845
Bikes: Lynskey GR300, Lynskey Backroad, Litespeed T6, Lynskey MT29, Burley Duet
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 2134 Post(s)
Liked 1,643 Times
in
825 Posts
I doubt most riders will ever experience any real benefit from thru axles. We can regurgitate the theoretical advantages here on the WWW, but out on the trail it's not going to make a quantifiable difference.
#19
Full Member
I've never experienced movement between a wheel and fork legs using conventional quick release skewers. No play. But then I know how to properly tighten a quick release, unlike what I estimate to be 75% of the bike riding population.
I suppose if I were riding disks, thru-axles would be prudent to prevent the front wheel from ejecting, but since on road bikes, disks are heavy, fussy, and unnecessary, this is all moot.
Apart from the idiot-proofing benefit, thru-axles are just a time-wasting PITA.
I suppose if I were riding disks, thru-axles would be prudent to prevent the front wheel from ejecting, but since on road bikes, disks are heavy, fussy, and unnecessary, this is all moot.
Apart from the idiot-proofing benefit, thru-axles are just a time-wasting PITA.
#20
Advanced Slacker
Join Date: Feb 2017
Posts: 6,210
Bikes: Soma Fog Cutter, Surly Wednesday, Canfielld Tilt
Mentioned: 26 Post(s)
Tagged: 0 Thread(s)
Quoted: 2761 Post(s)
Liked 2,534 Times
in
1,433 Posts
But on the trail (if you mean mountain biking on singletrack) it abso-freaking-lutely does.
#22
Full Member
#23
Banned.
Join Date: Oct 2018
Posts: 209
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 140 Post(s)
Likes: 0
Liked 2 Times
in
1 Post
Meanwhile, folks that have transitioned from QR to TA over the last few decades have noticed better tracking in chunk, less twisting, etc.
"Thru Axle and Wheel-to-Fork Clamping Stiffness One further area where the overall torsional inertia stiffness can be improved is at the axles. From work on our previous thru axle bikes (and, even before that, from research performed many years ago), we have learned that the 12mm thru axles used on our disc-brake bikes contribute further improvement to the overall system stiffness. The larger axle diameter and more rigid connection to the fork (compared with a quickrelease axle) both work to make the bike stiffer laterally" (https://www.cervelo.com/media/gene-c...tech_paper.pdf)
#24
Senior Member
Join Date: Apr 2007
Location: Munising, Michigan, USA
Posts: 4,131
Bikes: Priority 600, Priority Continuum, Devinci Dexter
Mentioned: 14 Post(s)
Tagged: 0 Thread(s)
Quoted: 685 Post(s)
Likes: 0
Liked 55 Times
in
37 Posts
The larger axle diameter and more rigid connection to the fork (compared with a quickrelease axle) both work to make the bike stiffer laterally" (https://www.cervelo.com/media/gene-c...tech_paper.pdf)
#25
Senior Member
Join Date: Oct 2016
Posts: 727
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 365 Post(s)
Liked 418 Times
in
247 Posts
With q/r's you usually have to make some fine tune adjustments to center the rotor between the pads when installing the wheel. Not that it's a huge deal unless you're doing a wheel swap in a race. But with thru axles they line up in the same place every time. That's the only real difference I've experienced.