p7rider Posted March 22, 2021 Report Share Posted March 22, 2021 Fitting new rear brake cylinder. I assume the pivot for the handbrake should be below the cast body , so that the cylinder can slide . As it is it will try to roll on the lever pivot. More badly made parts? Should I send it back ? I assume others will be similar . I will machine the slot a bit deeper. Link to comment Share on other sites More sharing options...
Pete Lewis Posted March 22, 2021 Report Share Posted March 22, 2021 thats a pretty basic cock up who's made it something to steer clear of good call, we need to know about potential headaches Pete Link to comment Share on other sites More sharing options...
p7rider Posted March 22, 2021 Author Report Share Posted March 22, 2021 I think most new ones look to be the same casting . Mine came from large on line retailer . Don't know if we mention specific companies here. Maybe I'll look for old stock seals and use the original. Link to comment Share on other sites More sharing options...
Colin Lindsay Posted March 22, 2021 Report Share Posted March 22, 2021 That's a really poor profile. I would send it back, and alert the supplier that they're not up to standard. I had to nip out and check mine, then found out I've only got one for the Herald... but it's a boxed Unipart version and so the casting is much deeper - see photos. The cylinder is NOS but the lever is the only one I could lay hands on so ignore the rust. I had a quick check online but most of the currently available ones look to have that same shiny, almost deformed, look. I did find one original NOS version so snapped it up on the spot... sorry but thanks for the heads-up that I didn't have a pair! The versions on James Paddocks website appear to be squarer round that end, so presumably deeper too. Link to comment Share on other sites More sharing options...
p7rider Posted March 22, 2021 Author Report Share Posted March 22, 2021 Thanks Colin . They came from paddocks. It's reminded me to always look for NOS. I will reuse the original. Now I've got it apart it looks o.k. why do we have this every time with parts. I'd much rather pay a couple of quid more for something decent. Link to comment Share on other sites More sharing options...
Mathew Posted March 22, 2021 Report Share Posted March 22, 2021 I've got a box of old cylinders in the barn, tomorrow i best go through them to check for good fitting ones. Link to comment Share on other sites More sharing options...
Scrappy Posted March 22, 2021 Report Share Posted March 22, 2021 1 hour ago, p7rider said: Thanks Colin . They came from paddocks. It's reminded me to always look for NOS. I will reuse the original. Now I've got it apart it looks o.k. why do we have this every time with parts. I'd much rather pay a couple of quid more for something decent. Paddocks are always very good if a part is not right and are grateful to people pointing it out. I would phone them and send it back. Alf. Link to comment Share on other sites More sharing options...
Colin Lindsay Posted March 22, 2021 Report Share Posted March 22, 2021 39 minutes ago, Scrappy said: Paddocks are always very good if a part is not right and are grateful to people pointing it out. I would phone them and send it back. Alf. I must admit that is why I use them repeatedly; I've never yet had a poor quality part from them but I'd have no hesitation in phoning and informing them. They're far more approachable and chatty than other suppliers. Link to comment Share on other sites More sharing options...
p7rider Posted March 22, 2021 Author Report Share Posted March 22, 2021 I will do . I 've looked at the other side which I fitted a couple of years ago and it's nearly as bad. I didn't notice then as I fitted it whilst on the car . This time I had the drive shaft on the bench. Link to comment Share on other sites More sharing options...
Pete Lewis Posted March 23, 2021 Report Share Posted March 23, 2021 heres a trw packaged unit the pivot location looks reasonable 1 Link to comment Share on other sites More sharing options...
Peter Truman Posted March 23, 2021 Report Share Posted March 23, 2021 The daughter was complaining that her Spit Mk2 brakes were lousy so just over a week ago i stripped the rears down after finding the LH seized, they were both Girlock 0.7in pistons, I only had one 3/4in new Girlock as a spare so I contacted Mick Dolphin who had 1 new Girlock 3/4in available, it arrived here in Aus in around a week very happy with that, good service. Ironically the Spit Mk2 should have been fitted with 3/4 in anyway, so all is right now. I chose Girlock for exactly the reason mentioned ie the handbrake pivot pin is fully recessed & therefore ensures the slave cylinder can slide to centralize. I did check the condition of the slave before fitting as it was old NOS, the grease was dry so all cleaned out and lubricated and reassembled. I can get Protec here 0.7in are reasonable but 3/4in are double the cost so it was cheaper to buy ex UK even with postage & Girlock to boot, Mick's always helpful and prompt. Also Protec I'm not sure if the recessed handbrake lever pin is fully recessed. Link to comment Share on other sites More sharing options...
p7rider Posted March 23, 2021 Author Report Share Posted March 23, 2021 Thanks for suggestions. Waiting to here from supplier beforeci do anything Link to comment Share on other sites More sharing options...
Mathew Posted March 23, 2021 Report Share Posted March 23, 2021 Just checked my two new spares Link to comment Share on other sites More sharing options...
Colin Lindsay Posted March 23, 2021 Report Share Posted March 23, 2021 Those are much better; I like the profile of the top one. Link to comment Share on other sites More sharing options...
daverclasper Posted March 23, 2021 Report Share Posted March 23, 2021 Had this issue in the past. Ground the recess deeper with a cheap mini dremmel thingy. I wonder if these poor castings contribute to those wear dimples that are common on the back plates?. Link to comment Share on other sites More sharing options...
johny Posted March 23, 2021 Report Share Posted March 23, 2021 No, I think its when the handbrake is pulled the force applied to the lever pulls it against the backplate so greatly increasing the wear effect.... Link to comment Share on other sites More sharing options...
p7rider Posted March 23, 2021 Author Report Share Posted March 23, 2021 7 hours ago, Mathew said: Just checked my two new spares They look good. What make is the one in yellow box? Link to comment Share on other sites More sharing options...
Mathew Posted March 24, 2021 Report Share Posted March 24, 2021 13 hours ago, p7rider said: They look good. What make is the one in yellow box? Best i can show is the box. Link to comment Share on other sites More sharing options...
Pete Lewis Posted March 24, 2021 Report Share Posted March 24, 2021 Brake Engineering supply most of the Club shop braking Pete Link to comment Share on other sites More sharing options...
p7rider Posted March 24, 2021 Author Report Share Posted March 24, 2021 Had a reply from supplier . Asking to check against old one . Well I know the pivot sits below the casting . 2nd will it make any difference to the operation ? Well I'm not sure but would rather not knowing it's not right. 3rd all their stock looks the same. 4th they've sold hundreds with no complaints. However they are happy for me to return it . So do I machine / grind the slot a little deeper? It's tricky as it's a radius at the bottom with straight sides , so can't drop a milling cutter in . Link to comment Share on other sites More sharing options...
Pete Lewis Posted March 24, 2021 Report Share Posted March 24, 2021 the shape in the cyl holds the pivot position in place the load is mainly against the back plate having the pivot sit proud is either going to pitch the wheel cylinder and it obviously cannot sit flush to the back plate never mind if thats going to restrict the slide action that needs to be free. Dremel to clear would work , wear in back plates does jam the slide and is probably more of an important fault and you were bright enough to spot the problem Hats off for that, many would not give it a thought hence no complaints crap rear brakes and their adjustments causes a lot of low brake efficiency problems what with upside down shoes and all the other Oops! its a simple and crude design and relies on all things nice to work as they should Pete Link to comment Share on other sites More sharing options...
p7rider Posted March 24, 2021 Author Report Share Posted March 24, 2021 I've ordered a pair of Borg and Beck. Looks a better casting with proper recess in photos. Will let you know when they arrive. Link to comment Share on other sites More sharing options...
p7rider Posted March 27, 2021 Author Report Share Posted March 27, 2021 Received 2 Borg and Beck cylinders . The pivot sits lower but not below. The recess is cast very roughly .The pivot pin rocks sideways as well. I will clean them up and use them . I would say the advert photo didn't represent these items as they are cast the same as the others I had . The photo shows a much smoother finish , maybe originally forged and machined. Being a mould maker I would be ashamed of these . The moulds are long over due a service. Link to comment Share on other sites More sharing options...
Colin Lindsay Posted March 27, 2021 Report Share Posted March 27, 2021 I have a few differing types; those with a number cast into the side of the cylinder end appear to be better quality: The others have a large 'L' or other logo on the side of the cylinder body, but are more deeply moulded than that B&B version: I know B&B aren't the quality they used to be any more, for most of their products. The problem is that most retailers have a standard photo they use which often bears no resemblance to what you actually receive, so it's hard to know who to purchase from. Link to comment Share on other sites More sharing options...
daverclasper Posted March 28, 2021 Report Share Posted March 28, 2021 When I recieved 2 cylinders (from a respected supplier) they were individually, poles apart in the casting quality. Link to comment Share on other sites More sharing options...
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