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Smallish master cylinder reservoirs - any drawbacks
clanger - 21/1/13 at 10:09 PM

hi all,

I'm looking to fit some smallish diameter master cylinder reservoirs on my brake/clutch setup. Due to limited space they really need to be less than 50mm dia. Want them to fit directly into the m/cylinders, but can knock up an adaptor if required
Motorbike ones are near as I can get but have limited volume due (30-45cc) to being quite short.

Are there any drawbacks from using a low volume set up? Was thinking of the fluid overheating perhaps during an enthusiastic trackday perhaps??
Won't be fitting a level indicator either so no need to be able to fit one in. Research indicates this is not an MOT requirement??? Correct me if i'm wrong.........

AP do some just a shade under 50mm dia, in various heights but they are rediculous £££'s

Any ideas as to small reservoirs?

cheers


RIE - 21/1/13 at 10:29 PM

I'm no expert so don't quote me on this, but I don't think the fluid in the reservoir is going to get particularly hot from use. It's there to take up the slack as your pads wear, so you'll either need to change your pads sooner, or top up the reservoir through their life.


loggyboy - 21/1/13 at 11:14 PM

Brake fluid doesnt flow so no issues with heat.
Try integral units
http://www.rallydesign.co.uk/product_info.php?products_id=4051


Mr Whippy - 21/1/13 at 11:38 PM

only draw back I can think off is it can be a pain to bleed the brakes if the reservoir is small but if you use an automatic system like easybleed then you can get round this, that's how I get round my landy's tiny clutch one.

Although not required for MOT's an indicator is a good idea anyway as especially on a small reservoir it gives you more warning to pull over before you loose all the fluid if you spring a leak and that does happen.

If your after cheap master cylinders then you could use series landy ones which are always stupid cheap prices




linky

[Edited on 21/1/13 by Mr Whippy]


Bare - 21/1/13 at 11:50 PM

Many 'Moderne' cars even dating back to well before the turn of the last Century used a Remote reservoir.
Find some :-)


clanger - 22/1/13 at 08:13 AM

cheers all,
integral m/cylinders from RD is a last resort. I'll look into the Landrover ones......
in the meantime I've found this type, which should be adaptable:


britishtrident - 22/1/13 at 08:37 AM

Small reservoir on the clutch is no problem. Any clutch master cylinder from just about a pre 1970 British car should fit the bill ie Cortina Mk 1 or Mk2 , Hillman Hunter, Morris Marina (NB UK built cars of this era use UNF brake pipe threads)

Disk brake system system have generously sized reservoir for two reasons (1) To allow a big enough airspace for fluid expansion. (2) To allow enough reserve fluid to take up pad wear.

For the brakes the best solution by far is to use a remote reservoir.


loggyboy - 22/1/13 at 09:12 AM

quote:
Originally posted by clanger
integral m/cylinders from RD is a last resort.


Why as a last resort?


britishtrident - 22/1/13 at 09:59 AM

Do an eBay search on "Girling Mastercylinder"