My Speed Bleeder experience
HDF Community Team
Joined: Nov 2012
Posts: 6,189
Likes: 2,419
From: USA
Equally, a length of tubing, running from a regular bleeder down into a container with enough brake fluid to cover the end of the tube will do the same thing owing to fluid viscosity and gravity. When the conventional bleeder is also opened approximately 1/2 turn, fluid can exit vea the port drilled into the bleeder and through the tubing. When the pedal or lever is pressed and the master cylinder piston extended, fluid escapes down the tubing and into the container. When the piston is returned, the viscosity of the fluid greatly restricts its ability to flow backwards up into the caliper or wheel cylinder. As a result, air is also restricted from entering. A small amount may enter around the bleeder threads if the bleeder is greatly unthreaded and if the container being used is placed far below the caliper or wheel cylinders (particularly, 4x4 vehicles with oversized wheels and tires). However, giving gravity but a few seconds to continue pulling the brake fliud out of the master cylinder and down through the bleeder on the caliper or wheel cylinder will vacate the small amount of air that was pulled in around the threads. The use of a clear tube will allow the person performing this task to observe all fluid and air flow.
Elite HDF Member
Joined: Jul 2008
Posts: 4,741
Likes: 45
From: Indian Land, SC
A speed bleeder has a spring loaded one-way check valve and a sealed threaded shank. You unscrew it about 1/2 turn and let the check valve do the work of keeping air from being pulled back into the hydraulic circuit when the brake pedal or lever is released, pulling back the master cylinder piston.
Equally, a length of tubing, running from a regular bleeder down into a container with enough brake fluid to cover the end of the tube will do the same thing owing to fluid viscosity and gravity. When the conventional bleeder is also opened approximately 1/2 turn, fluid can exit vea the port drilled into the bleeder and through the tubing. When the pedal or lever is pressed and the master cylinder piston extended, fluid escapes down the tubing and into the container. When the piston is returned, the viscosity of the fluid greatly restricts its ability to flow backwards up into the caliper or wheel cylinder. As a result, air is also restricted from entering. A small amount may enter around the bleeder threads if the bleeder is greatly unthreaded and if the container being used is placed far below the caliper or wheel cylinders (particularly, 4x4 vehicles with oversized wheels and tires). However, giving gravity but a few seconds to continue pulling the brake fliud out of the master cylinder and down through the bleeder on the caliper or wheel cylinder will vacate the small amount of air that was pulled in around the threads. The use of a clear tube will allow the person performing this task to observe all fluid and air flow.
Equally, a length of tubing, running from a regular bleeder down into a container with enough brake fluid to cover the end of the tube will do the same thing owing to fluid viscosity and gravity. When the conventional bleeder is also opened approximately 1/2 turn, fluid can exit vea the port drilled into the bleeder and through the tubing. When the pedal or lever is pressed and the master cylinder piston extended, fluid escapes down the tubing and into the container. When the piston is returned, the viscosity of the fluid greatly restricts its ability to flow backwards up into the caliper or wheel cylinder. As a result, air is also restricted from entering. A small amount may enter around the bleeder threads if the bleeder is greatly unthreaded and if the container being used is placed far below the caliper or wheel cylinders (particularly, 4x4 vehicles with oversized wheels and tires). However, giving gravity but a few seconds to continue pulling the brake fliud out of the master cylinder and down through the bleeder on the caliper or wheel cylinder will vacate the small amount of air that was pulled in around the threads. The use of a clear tube will allow the person performing this task to observe all fluid and air flow.
I checked. It should be the same SB3824HD as most. Nice to know as "my assistant", aka "the wife" isn't much help. Not that she won't, more like it's sometimes better to do things yourself.....
Grand HDF Member
Joined: Nov 2013
Posts: 3,807
Likes: 1,488
From: SW Washington State
Right you are but I would rather spend a few bucks on something that I know will not allow air to be introduced into my brake system unless I allow the master cylinders to bleed dry. We all have our preferred methods of getting a job done....so none of us are wrong.....
Seasoned HDF Member
Joined: Jan 2007
Posts: 20,616
Likes: 4,440
From: anacoco, la
i thought it was sb8125l?
She said Brembo calipers get the SB3824HD. A way to check is if a SAE 3/8" wrench fits, it should be the 3824, if a metric size wrench is needed, you may have the right part #.
Last edited by Hate Work; Jul 16, 2016 at 06:44 AM.
Seasoned HDF Member
Joined: Jan 2007
Posts: 20,616
Likes: 4,440
From: anacoco, la
at work right now so don't have access to the bike, but according to their chart, the sb3824 is for the 06-07 flhx, which didn't have the brembo brakes. the sb8125l will fit the 08-10 flhx, which according to the parts manual, uses the same caliper that my bike uses.
and that is why i have yet to buy these. i've been looking at them for years, but because of the contradiction on their website, i've not ordered.
yeah, i could call and get it straight from the source, but just haven't been that motivated. figure if they want my money, they'll make it easy for me to spend it.
and that is why i have yet to buy these. i've been looking at them for years, but because of the contradiction on their website, i've not ordered.
yeah, i could call and get it straight from the source, but just haven't been that motivated. figure if they want my money, they'll make it easy for me to spend it.
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Elite HDF Member
Joined: Jul 2008
Posts: 4,741
Likes: 45
From: Indian Land, SC
at work right now so don't have access to the bike, but according to their chart, the sb3824 is for the 06-07 flhx, which didn't have the brembo brakes. the sb8125l will fit the 08-10 flhx, which according to the parts manual, uses the same caliper that my bike uses.
and that is why i have yet to buy these. i've been looking at them for years, but because of the contradiction on their website, i've not ordered.
yeah, i could call and get it straight from the source, but just haven't been that motivated. figure if they want my money, they'll make it easy for me to spend it.
and that is why i have yet to buy these. i've been looking at them for years, but because of the contradiction on their website, i've not ordered.
yeah, i could call and get it straight from the source, but just haven't been that motivated. figure if they want my money, they'll make it easy for me to spend it.
http://www.speedbleeder.com/Motorcyc...zes.htm#Harley Davidson