help with brakes needed

grayd · Post by **grayd** » Mon Mar 10, 2014 1:49 pm

hi ive got a 2000 rewaco hs4 the brakes are very poor almost none existant cleaned and adjusted the backs bled them and still no better had a new master cylinder in 2011 any help will be much appreciated or anyone know of trike repairer or workshop in the Manchester area

1130cc · Post by **1130cc** » Mon Mar 10, 2014 3:03 pm

Have you thought about the ratio at the pedal?

You may find that the ratio is so small that the pressure you are applying to the pedal is not multiplied sufficiently to exert enough force on the pads?

This may make sense:
http://www.mpbrakes.com/techtalk/how-to ... edal-ratio
and
http://www.piratejack.net/index.php?opt ... &Itemid=21

I appreciate that it is a "factory made" trike, but you never know if any changes where made to linkages.

.

Skidmark · Post by **Skidmark** » Mon Mar 10, 2014 4:50 pm

Have you tried to pressure bleed the brakes, or are you using the usual method of pump brake and release brake nipple and let the fluid run into a jar via a flexible tube?

grayd · Post by **grayd** » Mon Mar 10, 2014 5:01 pm

have used both methods to bleed the brakes and got no air from them drained all the fluid and put new in

Doc. · Post by **Doc.** » Mon Mar 10, 2014 5:33 pm

Any help?
HS4 Brakes

Caliper(s) could be seized

grayd · Post by **grayd** » Mon Mar 10, 2014 5:48 pm

the backs are drums and are working with the drums off the front caliper is working jacked it up pushed pads apart then pressed brakes and they operated ok

Doc. · Post by **Doc.** » Mon Mar 10, 2014 7:08 pm

Are the front and rear brakes linked, that is, do they all work off the foot pedal?

What does the surface of the drum-shoes look like, are they glazed (they'll look a bit 'shiny' if they are)?

How much thickness of friction material is there on the shoes?

Is the pedal 'spongy' (soft-feeling) at all after bleeding?

How much of the brake hoses are rubber, just the sections between the frame and the Calipers, or the whole length?

Does it have a servo fitted?

grayd · Post by **grayd** » Mon Mar 10, 2014 8:26 pm

yes the front and back brakes are operated off the foot brake the shoes and the drums have been cleaned and rubbed down with sandpaper the front brake has a braided hose the back brakes have have about 8 -12 inches of rubber hose then its copper pipe and there is no servo

grayd · Post by **grayd** » Mon Mar 10, 2014 8:28 pm

the shoes are look fairly new with plenty of lining on them
no the pedal wasn't spongy after bleeding

Mal · Post by **Mal** » Mon Mar 10, 2014 10:19 pm

Let the handbrake adjuster right off then reajust the brakeshoes to the drums, finally readjust handbrake. Just a thought.

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help with brakes needed

help with brakes needed