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1Back to top Go down   Speedbleeder on ABSI question Empty Speedbleeder on ABSI question on Thu Sep 03, 2015 12:48 pm

kioolt

kioolt
Silver member
Silver member
I just put speedbleeders on my 91 K100LT front wheel caliper and ABS unit.  Everything went fine as far as bleeding goes.  I did notice that the OEM bleeder screw on the ABS unit is different than what I call a standard bleeder screw. There is an o-ring to the right of the threads and between the threads and the o-ring is what appears to be a relief cut for fluid flow.  Please take a look at the image below.  Does anyone know if the speedbleeder is an ok substitute for this and that my ABS will still function as intended?


Speedbleeder on ABSI question 100_1352_zpspl7l2b2t


__________________________________________________
2004 R1150RT 186,800 miles 
1991 K100LT 128,700 miles
1982 R100RT 106,900 miles
Total 422,400 BMW miles

AMA,BMWRA,BMWMOA


The cheapest thing on a BMW is the nut that connects the handlebars to the seat.
    

2Back to top Go down   Speedbleeder on ABSI question Empty Re: Speedbleeder on ABSI question on Thu Sep 03, 2015 8:30 pm

RicK G

RicK G
admin
admin
Had I designed it I would have put the reliefe below the thread but providing the O-ring seals in the body of the caliper/ABS modulator then I don't see a problem.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

3Back to top Go down   Speedbleeder on ABSI question Empty Re: Speedbleeder on ABSI question on Thu Sep 03, 2015 9:54 pm

rawdonball

rawdonball
Platinum member
Platinum member
I don't think the relief between the threads and the o ring is for fluid flow. I think it is there for ease of producing the threaded section without creating a stress concentration point. The o ring is there to make bleeding easier - less tendency to leak fluid whilst bleeding or to suck air back in past the threads. Some have used thread tape whilst bleeding to achieve the same effect.

Can't comment on what effect the speed bleeder would have on the brake system as I'm not familiar with these, but as long as they seal the bleed hole in normal operation they cannot influence braking performance (IMO)


__________________________________________________
'88 K100RT, '86 K75C, '05 Yamaha TTR250
    

4Back to top Go down   Speedbleeder on ABSI question Empty Re: Speedbleeder on ABSI question on Thu Sep 03, 2015 10:21 pm

kioolt

kioolt
Silver member
Silver member
I've never seen a bleeder screw like this before.  But your explanation does make some sense.  I wanted to look down into the bleed screw threaded hole to see if there were any paths for fluid other then the bleed hole at the bottom but the brake fluid was coming out so I just put the speedbleeder in it.


__________________________________________________
2004 R1150RT 186,800 miles 
1991 K100LT 128,700 miles
1982 R100RT 106,900 miles
Total 422,400 BMW miles

AMA,BMWRA,BMWMOA


The cheapest thing on a BMW is the nut that connects the handlebars to the seat.
    

5Back to top Go down   Speedbleeder on ABSI question Empty Re: Speedbleeder on ABSI question on Thu Sep 03, 2015 10:36 pm

rawdonball

rawdonball
Platinum member
Platinum member
Please tell me more about the speedbleeder.

My problem has been that when I use the master cylinder as a bleed pump I end up sucking air past the old hard seals (I've had it open and cleaned everything up but don't want to spend the money on overhaul kit until the thing actually leaks fluid).


__________________________________________________
'88 K100RT, '86 K75C, '05 Yamaha TTR250
    

6Back to top Go down   Speedbleeder on ABSI question Empty Re: Speedbleeder on ABSI question on Thu Sep 03, 2015 10:48 pm

kioolt

kioolt
Silver member
Silver member
Speedbleeders are bleed screws that have a built in check valve.  All you do is loosen the bleed screw and then pump the lever while making sure you don't run the reservoir empty.  No need to open and close the bleed screw each time.  They are very handy on cars where you can't be at both ends at the same time.

http://www.speedbleeder.com/


__________________________________________________
2004 R1150RT 186,800 miles 
1991 K100LT 128,700 miles
1982 R100RT 106,900 miles
Total 422,400 BMW miles

AMA,BMWRA,BMWMOA


The cheapest thing on a BMW is the nut that connects the handlebars to the seat.
    

7Back to top Go down   Speedbleeder on ABSI question Empty Re: Speedbleeder on ABSI question on Thu Sep 03, 2015 11:29 pm

RicK G

RicK G
admin
admin
Ancient eyes were seeing the hole where the red arrow is but after enhansing the pic its at the blue arrow so I totally agree with Rawdon.
Speedbleeder on ABSI question 100_1310


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

8Back to top Go down   Speedbleeder on ABSI question Empty Re: Speedbleeder on ABSI question on Fri Sep 04, 2015 11:32 am

Two Wheels Better

Two Wheels Better
Moderator
Moderator
Get one of these and you'll never have to fuss with inefficient bleeding of the callipers or ABS in any situation. I recently bled the ABS II on my RS in a full ten minutes, pump, circuits, callipers, hoses, the lot.

Speedbleeder on ABSI question Mityva10
$39 at Harbor Freight in the US. Prolly easily a hunnerd in OZ.


__________________________________________________

“Some people see things that are and ask, ‘Why?’. Some people dream of things that never were and ask, ‘Why not?’. Some people have to go to work...

~George Carlin

1970 R60/5, OZ '77 R75/7-R100, '85 K100'87 K75C, OZ '87 K100RS, '93 K11-K12 Big Block, '93 K1100RS, '95 R100-Mystic, '96 K1100RS, '98 K1200RS, '00 K1200RS, '02 K1200RS, '03 K1200GT, '04 R1150R'04 R1150RT, '05 K1200S, '06 K1200R, '07 K1200R, '09 K1300GT & 2013 R1200RT-Polizei  - Beemers owned still or sold.

    

9Back to top Go down   Speedbleeder on ABSI question Empty Re: Speedbleeder on ABSI question on Fri Sep 04, 2015 5:43 pm

KPilot

KPilot
active member
active member
@Two Wheels Better wrote:Get one of these and you'll never have to fuss with inefficient bleeding of the callipers or ABS in any situation. I recently bled the ABS II on my RS in a full ten minutes, pump, circuits, callipers, hoses, the lot.

Speedbleeder on ABSI question Mityva10
$39 at Harbor Freight in the US. Prolly easily a hunnerd in OZ.

Something similar in OZ for less than $34 http://www.ebay.com.au/itm/Hand-Held-Brake-Bleeder-Tester-Set-Bleed-Kit-Vacuum-Pump-Car-Motorbike-Bleeding-/141309788342?hash=item20e6b840b6

    

10Back to top Go down   Speedbleeder on ABSI question Empty Re: Speedbleeder on ABSI question on Fri Sep 04, 2015 10:34 pm

Two Wheels Better

Two Wheels Better
Moderator
Moderator
I have one at home. I bought it in OZ for about $40 five or six years ago. It broke after the third use, bad diaphragm and a weak trigger - it always bent under pressure. It came in a red plastic box similar to that one.


__________________________________________________

“Some people see things that are and ask, ‘Why?’. Some people dream of things that never were and ask, ‘Why not?’. Some people have to go to work...

~George Carlin

1970 R60/5, OZ '77 R75/7-R100, '85 K100'87 K75C, OZ '87 K100RS, '93 K11-K12 Big Block, '93 K1100RS, '95 R100-Mystic, '96 K1100RS, '98 K1200RS, '00 K1200RS, '02 K1200RS, '03 K1200GT, '04 R1150R'04 R1150RT, '05 K1200S, '06 K1200R, '07 K1200R, '09 K1300GT & 2013 R1200RT-Polizei  - Beemers owned still or sold.

    

11Back to top Go down   Speedbleeder on ABSI question Empty Re: Speedbleeder on ABSI question on Sat Sep 05, 2015 2:31 pm

xpc316e

xpc316e
Gold member
Gold member
I also own a cheap vacuum bleeder, but it isn't that successful to be honest. Being rather unsatisfied with it, I bought a couple of Stahlbus brake vent valves, otherwise known as speedbleeders. The design differs from the cheaper speedbleeders on the market, and I believe that they are worth the extra cost.

They are extremely easy to use and very effective. They are not the cheapest things on the market, but they make bleeding and fluid changes child's play. You will save their cost on the first use compared with a visit to a mechanic. I bought mine from Motorworks.


__________________________________________________
VIN 0191428, 1991 K100LT, formerly owned by Lancashire Constabulary. This old warhorse is now 'out to grass' and living in retirement in Suffolk, where it will be showered with appropriate love and care.

VIN 6459609, 1992 K1100LT, another ex-Police machine, even though she now looks like she is a former fire engine.
    

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