Hydraulic Disc Brakes
#1
Newbie
Thread Starter
Join Date: Apr 2022
Posts: 1
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Hydraulic Disc Brakes
New Bike
I am considering buying a new Trek bicycle with hydraulic disc brakes (Shimano 105 group set). To transport my bike, I take the
wheels off and put everything in the car trunk.I was told that when the wheels with the brake rotors are off the bike and if the brake
control levers are depressed, the hydraulic pistons will expand and prevent the wheels from being reinstalled. The brakes will need
to be bled to reinstall the wheels.
Is this correct?
I am considering buying a new Trek bicycle with hydraulic disc brakes (Shimano 105 group set). To transport my bike, I take the
wheels off and put everything in the car trunk.I was told that when the wheels with the brake rotors are off the bike and if the brake
control levers are depressed, the hydraulic pistons will expand and prevent the wheels from being reinstalled. The brakes will need
to be bled to reinstall the wheels.
Is this correct?
#2
Senior Member
Join Date: Oct 2013
Location: Mich
Posts: 7,395
Bikes: RSO E-tire dropper fixie brifter
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
Liked 2,979 Times
in
1,920 Posts
That is correct to assume.
__________________
-Oh Hey!
-Oh Hey!
#3
Banned
Join Date: Feb 2008
Location: Mississauga/Toronto, Ontario canada
Posts: 8,721
Bikes: I have 3 singlespeed/fixed gear bikes
Mentioned: 30 Post(s)
Tagged: 0 Thread(s)
Quoted: 4227 Post(s)
Liked 2,488 Times
in
1,286 Posts
New Bike
I am considering buying a new Trek bicycle with hydraulic disc brakes (Shimano 105 group set). To transport my bike, I take the
wheels off and put everything in the car trunk.I was told that when the wheels with the brake rotors are off the bike and if the brake
control levers are depressed, the hydraulic pistons will expand and prevent the wheels from being reinstalled. The brakes will need
to be bled to reinstall the wheels.
Is this correct?
I am considering buying a new Trek bicycle with hydraulic disc brakes (Shimano 105 group set). To transport my bike, I take the
wheels off and put everything in the car trunk.I was told that when the wheels with the brake rotors are off the bike and if the brake
control levers are depressed, the hydraulic pistons will expand and prevent the wheels from being reinstalled. The brakes will need
to be bled to reinstall the wheels.
Is this correct?
#4
-------
Join Date: Jul 2020
Location: Tejas
Posts: 12,797
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 9656 Post(s)
Liked 6,366 Times
in
3,506 Posts
#6
Senior Member
Join Date: Oct 2013
Location: Mich
Posts: 7,395
Bikes: RSO E-tire dropper fixie brifter
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
Liked 2,979 Times
in
1,920 Posts
A folded over cereal box flap with a bread tie works. That bread tie is essential if the bicycle is roof mounted without the front wheel installed.
__________________
-Oh Hey!
-Oh Hey!
#7
Senior Member
Join Date: Sep 2017
Posts: 7,887
Mentioned: 38 Post(s)
Tagged: 0 Thread(s)
Quoted: 6972 Post(s)
Liked 10,970 Times
in
4,692 Posts
No. All you have to do is insert a plastic tire lever in between the pads and push them back into place. Alternatively, just don’t pull on the bloody brake levers while the wheels are off the bike. Or use the plastic inserts that any shop will give you for free.
Likes For Koyote:
#8
Senior Member
Join Date: Oct 2013
Location: Mich
Posts: 7,395
Bikes: RSO E-tire dropper fixie brifter
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
Liked 2,979 Times
in
1,920 Posts
if there's enough of a gap to pry both sides open & each piston is equally extended out.
__________________
-Oh Hey!
-Oh Hey!
#9
Senior Member
Join Date: Jan 2010
Location: TC, MN
Posts: 39,520
Bikes: R3 Disc, Haanjo
Mentioned: 354 Post(s)
Tagged: 1 Thread(s)
Quoted: 20810 Post(s)
Liked 9,456 Times
in
4,672 Posts
New Bike
I am considering buying a new Trek bicycle with hydraulic disc brakes (Shimano 105 group set). To transport my bike, I take the
wheels off and put everything in the car trunk.I was told that when the wheels with the brake rotors are off the bike and if the brake
control levers are depressed, the hydraulic pistons will expand and prevent the wheels from being reinstalled. The brakes will need
to be bled to reinstall the wheels.
Is this correct?
I am considering buying a new Trek bicycle with hydraulic disc brakes (Shimano 105 group set). To transport my bike, I take the
wheels off and put everything in the car trunk.I was told that when the wheels with the brake rotors are off the bike and if the brake
control levers are depressed, the hydraulic pistons will expand and prevent the wheels from being reinstalled. The brakes will need
to be bled to reinstall the wheels.
Is this correct?
As mentioned by others, Shimano has orange spacers that you can stick between the pads. Shimano also has yellow lever lock thingies that slide in under the levers and keeps both the brakes and the shifters from being actuated. I take long road trips regularly and I use both, though I could probably get away with just the lever block thingies.
I took a screen shot of a video with the lever block - they came with my levers when I built up my bike and I would expect that the shop that you buy from would have a box of 'em laying around if you ask.
Likes For WhyFi:
#10
Senior Member
Join Date: Jan 2010
Location: TC, MN
Posts: 39,520
Bikes: R3 Disc, Haanjo
Mentioned: 354 Post(s)
Tagged: 1 Thread(s)
Quoted: 20810 Post(s)
Liked 9,456 Times
in
4,672 Posts
#11
Senior Member
Join Date: Jul 2019
Location: In the south but from North
Posts: 700
Bikes: Turner 5-Spot Burner converted; IBIS Ripley, Specialized Crave, Tommasini Sintesi, Cinelli Superstar, Tommasini X-Fire Gravel
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 406 Post(s)
Liked 389 Times
in
219 Posts
As people have said, you can use the travel block that any shop can give you. Most shops will give you them for free. I have 5-6 in my car and another 10+ in my garage.
Also, all you may need to do is push the pads back, no bleed needed.
Also, all you may need to do is push the pads back, no bleed needed.
#12
Senior Member
Join Date: Sep 2017
Posts: 7,887
Mentioned: 38 Post(s)
Tagged: 0 Thread(s)
Quoted: 6972 Post(s)
Liked 10,970 Times
in
4,692 Posts
#13
Happy With My Bikes
Join Date: Sep 2020
Location: Oklahoma
Posts: 2,187
Bikes: Hi-Ten bike boomers, a Trek Domane and some projects
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 884 Post(s)
Liked 2,308 Times
in
1,118 Posts
This has always worked for me. Even putting a 56cm frame and both wheels in the confines of a Honda Civic in the dark I have yet to inadvertently bump one of the levers. Additionally when I do need to trunk my bikes instead of using a rack, I prefer it to be my disc brake bike over one of them that I have to wrest a tire through rim brakes.
__________________
"It is the unknown around the corner that turns my wheels." -- Heinz Stücke
"It is the unknown around the corner that turns my wheels." -- Heinz Stücke
Likes For Chuck M:
#14
Senior Member
Join Date: Oct 2013
Location: Mich
Posts: 7,395
Bikes: RSO E-tire dropper fixie brifter
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
Liked 2,979 Times
in
1,920 Posts
#15
Senior Member
Join Date: Jan 2010
Location: TC, MN
Posts: 39,520
Bikes: R3 Disc, Haanjo
Mentioned: 354 Post(s)
Tagged: 1 Thread(s)
Quoted: 20810 Post(s)
Liked 9,456 Times
in
4,672 Posts
I can't say that I've ever seen a piston that didn't back off enough to slide in a thin blade when the lever was released. Or, if nothing else, you could just remove one screw and remove the pads to give yourself plenty of room between the pistons.
#16
Senior Member
Join Date: Oct 2013
Location: Mich
Posts: 7,395
Bikes: RSO E-tire dropper fixie brifter
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
Liked 2,979 Times
in
1,920 Posts
given how many economical quick solutions there are for preventing an issue, their is no reason for disregarding taking the precautions in preventing problems.
__________________
-Oh Hey!
-Oh Hey!
#17
Senior Member
Join Date: Jan 2010
Location: TC, MN
Posts: 39,520
Bikes: R3 Disc, Haanjo
Mentioned: 354 Post(s)
Tagged: 1 Thread(s)
Quoted: 20810 Post(s)
Liked 9,456 Times
in
4,672 Posts
Sure, but there's also no reason for boogieman scare tactics and letting someone believe that they may need a bleed job because their lever got depressed. It's silly.
#18
Senior Member
Join Date: Jan 2007
Location: Eastern VA
Posts: 1,726
Bikes: 2022 Fuel EX 8, 2021 Domane SL6, Black Beta (Nashbar frame), 2004 Trek 1000C for the trainer
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 271 Post(s)
Liked 447 Times
in
266 Posts
Someone's trying to scare you.
As mentioned by others, Shimano has orange spacers that you can stick between the pads. Shimano also has yellow lever lock thingies that slide in under the levers and keeps both the brakes and the shifters from being actuated. I take long road trips regularly and I use both, though I could probably get away with just the lever block thingies.
I took a screen shot of a video with the lever block - they came with my levers when I built up my bike and I would expect that the shop that you buy from would have a box of 'em laying around if you ask.
As mentioned by others, Shimano has orange spacers that you can stick between the pads. Shimano also has yellow lever lock thingies that slide in under the levers and keeps both the brakes and the shifters from being actuated. I take long road trips regularly and I use both, though I could probably get away with just the lever block thingies.
I took a screen shot of a video with the lever block - they came with my levers when I built up my bike and I would expect that the shop that you buy from would have a box of 'em laying around if you ask.
#19
Senior Member
Join Date: Oct 2013
Location: Mich
Posts: 7,395
Bikes: RSO E-tire dropper fixie brifter
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
Liked 2,979 Times
in
1,920 Posts
IMO; It's a scare tactic if the operator doesn't know what to feel for during the use of the brakes.
__________________
-Oh Hey!
-Oh Hey!
#20
Senior Member
Join Date: Jan 2010
Location: TC, MN
Posts: 39,520
Bikes: R3 Disc, Haanjo
Mentioned: 354 Post(s)
Tagged: 1 Thread(s)
Quoted: 20810 Post(s)
Liked 9,456 Times
in
4,672 Posts
#21
Senior Member
Join Date: Sep 2017
Posts: 7,887
Mentioned: 38 Post(s)
Tagged: 0 Thread(s)
Quoted: 6972 Post(s)
Liked 10,970 Times
in
4,692 Posts
#22
Senior Member
Join Date: Oct 2013
Location: Mich
Posts: 7,395
Bikes: RSO E-tire dropper fixie brifter
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
Liked 2,979 Times
in
1,920 Posts
#23
Senior Member
Join Date: Oct 2013
Location: Mich
Posts: 7,395
Bikes: RSO E-tire dropper fixie brifter
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
Liked 2,979 Times
in
1,920 Posts
#24
Senior Member
Join Date: Jan 2010
Location: TC, MN
Posts: 39,520
Bikes: R3 Disc, Haanjo
Mentioned: 354 Post(s)
Tagged: 1 Thread(s)
Quoted: 20810 Post(s)
Liked 9,456 Times
in
4,672 Posts
B) pistons aren't going to be overly extended unless the pads are removed
I think it's fair to assume that there's no compelling reason to continue here, so I'll bow out.
Likes For WhyFi:
#25
Senior Member
Join Date: May 2020
Location: North Florida
Posts: 517
Bikes: 2019 Specialized Diverge, 2021 Cervelo Caledonia
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 258 Post(s)
Likes: 0
Liked 378 Times
in
197 Posts
...I was told that when the wheels with the brake rotors are off the bike and if the brake
control levers are depressed, the hydraulic pistons will expand and prevent the wheels from being reinstalled. The brakes will need
to be bled to reinstall the wheels.
Is this correct?
control levers are depressed, the hydraulic pistons will expand and prevent the wheels from being reinstalled. The brakes will need
to be bled to reinstall the wheels.
Is this correct?
Likes For Random11: