WTB rear brake master cylinder - NOT a duplicate post

[patrino]

New forum member, picked up an FT500 last month, eager to get it on the road.

Bike did not have a rear master cylinder with it.  If you have one you're willing to sell, please let me know.  I know greenjeans is looking too.

Thanks, Patrick

[J6G1Z]

From the Yahoo FT500 Ascot Owners Group: https://groups.yahoo.com/neo/groups/honda-ascot/files

Rear Brake Calipers that can be used to replace the FT500’s rear caliper.

Below is a list of verified suitable replacement calipers for the FT500’s rear brake. Also, at the bottom is a great tip for unsticking a badly stuck brake caliper piston.

Assemblies where 43101-MA3-006 is used

 1981 CB750F A - REAR BRAKE CALIPER
 1981 CB900F A - REAR BRAKE CALIPER
 1981 CBX A - REAR BRAKE CALIPER
 1982 CB750F A - REAR BRAKE CALIPER
 1982 CB900F A - REAR BRAKE CALIPER
 1982 CBX A - REAR BRAKE CALIPER
 1982 FT500 A - REAR BRAKE CALIPER
 1983 CB1100F A - REAR BRAKE CALIPER
 1983 FT500 A - REAR BRAKE CALIPER

Submitted by “wesley112977”

 the caliper from a vf500 fits - i know this because i've done it Submitted by “martinrook”

 CB1100F-D 1983 1100 CB1100F Street
 CB750F-B 1981 750 750 Super Sport Street
 CB750F-C 1982 750 750 Super Sport Street
 CB900F-B 1981 900 900 Super Sport Street
 CB900F-C 1982 900 900 Super Sport Street
 CBX-B 1981 1047 CBX Street
 CBX-C 1982 1047 CBX Street
 FT500-C 1982 500 FT500 Ascot Street
 FT500-D 1983 500 FT500 Ascot Street

Submitted from Zedder parts cross comparison software.

To unstick a badly stuck caliper piston: A friend of mine turned me onto the grease gun trick for removing stuck caliper/master cylinder pistons--works awesome. You really don't need an adaptor to make it work. Just unscrew the end from the grease gun and carefully thread the grease gun into the caliper/master cylinder. You'll only be able to get a couple of threads started, but that is enough. Several pumps of the grease gun and the stuck piston's out!!
Jointly submitted by “oldguzziguy” & “Antonio”

You can also add the 1987 to 1990 Honda CBR600 rear caliper to the list of rear calipers that will fit the FT500 Ascots.

Submitted by “oldguzziguy”
Part # = 43101-MA3-006
Part Description = CALIPER, REAR Model Count = 9

[J6G1Z]

Sorry about that. I seem to have missed the "master cylinder" part. Usually there is a problem with the caliper.

There are rebuild kits available. You will have to search the I'net for a supplier. I think K&L offers some.

If you can locate a master cylinder with the same mounting holes & bore diameter, that should work. Look at the early Honda CBR 600 Hurricane parts.

Here is a picture of a Brembo master cylinder that someone from the Yahoo group adapted to work.

[J6G1Z]

Found these:

https://www.davidsilverspares.com/FT500-ASCOT-1982-USA/part_176946/

https://www.bing.com/search?q=Honda+FT500+Ascot+rear+master+cylinder+rebuild+kit&form=APMCS1

[patrino]

Thank you!

Getting close to taking it around the block for the first time.

With the help of some parts from Vicious Cycle here in Portland I was able to get a starter motor on her, and fired it up for the first time a couple weeks ago.  I'm hoping she'll be rideable within a couple weeks.  Want to make sure all the gears are there, etc. (I bought the bike as an unfinished project.)

[hellblom]

J6G1Z - I see that you have the Brembo rear master cylinder installed. How do you keep the pushing rod from falling out of it - without having the break pedal rest on the motor cover?

[J6G1Z]

J6G1Z - I see that you have the Brembo rear master cylinder installed. How do you keep the pushing rod from falling out of it - without having the break pedal rest on the motor cover?

That's not my bike. Just a picture I found.

Might have to experiment with different push rod lengths. Had to do that before on one of my bike projects.

[hellblom]

Thanks. It still seems to me that the push rod have to be able to be attached somehow to the master cylinder in order for the break pedal to be able to adjusted to the level you want it to be at. If the push rod is not fastened the pedal will travel upwards until it rests on the motor cover which is just wrong. There must be some detail I'm not understanding here..

Well, I will keep fiddling with it.