Hi Erik I have only seen the response where you mention new discs, pads and calliper repair set. I've also seen Andy's response where he suggests modifying the leading edge of the pad and fitting the anti squeal shims - something that I totally agree with. For some reason, Andy's posts always fall into my spam.
If you want a lighter "feel" to the braking then a servo will help you achieve this - just don't expect it to solve the screeching/squealing. I find the non servo "feel" of my '87 4/4 to be quite "natural" - I have to press hard, but it is progressive. It seems quite well balanced against the weight and achievable speeds of the car. If you're only used to cars with servos fitted though, then I can understand why you would consider the lack of one "unnatural". I can't see any posts where you describe what you have done to the pads. I'm not sure that fitting a servo will help change the squeal during light braking - the pressure of the pad on the disc remains the same - it's only the pressure you apply to the pedal that will be reduced. You may gain a little more control, and this may enable you to control the squeal. I wouldn't fit one, but there's no reason why you shouldn't - if you urn it into a twin circuit system at the same time then you do of course benefit from an improvement in safety. Hope that you sort it Best regards David - On 3 Jun 2012, at 22:30, Erik Andresen wrote: > Hi David > > I bought the car last year, so I do not know if the problem was there before > the brakes were changed. > I've had the brakes apart and the pistons in the cliperns works perfect. > I have modified the brake pads as I described in my reply to Andy. (Please > read this) > I have the problem when I brake light at low speeds, and therefore have a > little pressure in the braking system, it is to avoid this that I will put a > servo in. > Of course I can just press harder, but it's just not natural driving. > > Thanks for your comments > > Regards > Erik > > On 03/06/2012 11:00 "David Ashworth" <[email protected]> > wrote: >> Hi Erik >> >> I would be very surprised if adding servo system would alleviate screeching >> brakes as a servo just "assists" by applying additional pressure. Screeching >> is normally associated with uneven wear or contamination (obviously not the >> case with your completely new set). It could be misalignment though - either >> the calliper being offset or the disc not running true. One other thing >> though - are you getting full stopping power?- It's highly unlikely, but if >> the brakes are only being pushed a small distance then the pads would rub >> the disc and not actually grab it. I f this is the case, them the fault >> could lie with the master cylinder. I'm not an expert in car brakes at all - >> although I have stripped and rebuilt my '87 Morgan's and a few others over >> the years. I do strip, bleed, rebuild Mountain Bike hydraulic brakes on a >> regular basis. I also service the cars that my wife's business uses (these >> use a single circuit, single disc and calliper off a moto scooter) and >> although simpler and smaller the principles (and fixes) are the same. >> >> >> Did the brakes screech before the rebuild? If so when was the last time that >> they didn't screech? Was it prior to the car standing for a long period? Are >> you sure that the cylinders are moving evenly - even after the calliper >> rebuild? Is there any play in the road wheel relative to the calliper? >> >> I really don't think that fitting a servo will solve the problem. Look >> elsewhere for the cause. The servo is there to aid your right leg! (or left >> one if you're driving really fast)!! >> >> Best regards >> >> David >> >> David Ashworth >> Director >> Klarus Consulting Limited >> Email: [email protected] >> Tel: +44 (0) 7810 155714 >> This email transmission is confidential and intended solely for the person >> or organisation to whom it is addressed. If you are not the intended >> recipient, you must not copy, distribute or disseminate the information, or >> take any action in reliance of it. Any views expressed in this message are >> those of the individual sender, except where the sender specifically states >> them to be the views of Klarus Consulting Limited. If you have received this >> message in error, please do not open any attachment, but notify the sender, >> then delete this message from your system. Please rely on your own virus >> checking systems as the sender takes no responsibility for any damage rising >> out of any bug or virus infection. >> >> On 2 Jun 2012, at 18:57, Erik Andresen wrote: >> >>> Hi Andy >>> It is my hope that this will solve the problem of screeching brakes. >>> I have new discs, brake pads and repair kit for calipers. >>> And of course a better braking power. >>> >>> The MMC servo assist from later cars, is this to a single circuit braking >>> system? >>> >>> Erik >>> >>> >>> >>> On 02/06/2012 07:46 "Andy Garlick" <[email protected]> wrote: >>>> Erik >>>> Why do you feel you need a brake servo? >>>> The light weight of the +4, and its powerful brakes are more than capable >>>> of slowing the car down without one. Even the racers do not use servos on >>>> +4s , +8s are another matter due to their heavier mass, and faster >>>> approach speeds. >>>> >>>> The best solution would be to use the MMC servo assist from the later cars >>>> ( the master cylinder and servo are all one unit, and the sizing is >>>> correct for a Morgan) . Using a separate servo means plumbing it in on the >>>> bulkhead . >>>> >>>> However I would try a later car with servoed brakes before you embark on >>>> the this conversion, I don't think you will get much benefit. If you can >>>> generate enough pedal pressure to lock the front brakes , you don't need a >>>> servo. >>>> >>>> Andy >>>> >>>> From: Erik Andresen <[email protected]> >>>> To: mogtalk2 <[email protected]> >>>> Sent: Friday, 1 June 2012, 17:13 >>>> Subject: [mogtalk2] Brake servo unit on a +4 >>>> >>>> Hi all. >>>> I have a Morgan +4 with a TR4A engine from 1966. Does anyone have >>>> experience with changing the brake system with a brake servo unit. >>>> Regards Erik >>>> View posts on The Mail Archive >>>> http://www.mail-archive.com/[email protected]/ >>>> Modify Your Subscription >>>> >>>> >>>> View posts on The Mail Archive >>>> http://www.mail-archive.com/[email protected]/ >>>> Modify Your Subscription >>> View posts on The Mail Archive >>> http://www.mail-archive.com/[email protected]/ >>> Modify Your Subscription >> >> View posts on The Mail Archive >> http://www.mail-archive.com/[email protected]/ >> Modify Your Subscription > View posts on The Mail Archive > http://www.mail-archive.com/[email protected]/ > Modify Your Subscription ------------------------------------------- View posts on The Mail Archive http://www.mail-archive.com/[email protected]/ [http://www.mail-archive.com/[email protected]/] Modify Your Subscription: https://www.listbox.com/member/?member_id=22459785&id_secret=22459785-4a39ddf8 Powered by Listbox: http://www.listbox.com
