Brake Servo Or Not?

[Guest mower man]

I must be the exeption to the masses [always was awkward ] 4pots,260 discs servo ,no load apportioning valve,drums with std linings fast road spec pads lotus elise rears Ithink --------- happy-- you bet lots of feel no locking unless I realy jump on the pedal .Only lock up probs I had were with std calipers that couldn't decide which one would do it first thats why I upgraded mower man [mick] , ABS is controlled by personal computer on my shoulders ,

[Guest The Modfather]

ABS is controlled by personal computer on my shoulders ,

 

What system is that running Mick, Windows 1950?

[Guest gdc]

so no servo = good brakes . but be aware they dont feel like a modern brake pedal.

 

graham

[steve_wilson]

i have brembo 4 pots on mine with 324mm discs and a servo.

feels about right for me. they can lock up if you try hard enough but i didnt like the feel of no servo so it's staying like that!

[Guest mower man]

What system is that running Mick, Windows 1950?

No Daz it's earlier than that circa 1947 [a good yearfor all sorts of thing's ] mower man-- p.s.press hard enough tostop because you actually go faster with the wheels locked ,I would have thought you would have known that Daz as a Police driver

[Guest The Modfather]

I would have thought you would have known that Daz as a Police driver

 

Absolutely Mick.

 

A skidding car is as much use as an ashtray on a motorbike. ABS is NOT efficient braking either. Nothing as good as cadence braking, but no one learns it anymore.

 

Daz

[Guest mower man]

Used it for years ,started when throwing a mildly tweeked 1275Cooper 'S' about on road rallies about30 years ago [ not p.c. now] good fun mick

[Guest AWhite]

I have the 260mm drilled/grooved discs with bigger calipers + standard master cylinder and its absoutely fine.

 

Don't forget that you need to remove servo and put a push rod (get them from tiger) inbetween pedal and m/c you can't just simply remove the vacuum take off and expect it to work well.

 

Link to push rod Here

 

Andy

[baj25]

Took car for a spin with servo hose disconnected and blocked up- much better than with a servo. I'll get a new pushrod, but how does having servo fitted but disconnected effect feel? Can't remember hearing any comment on that before. Bri

[Guest Ian & Carole]

Bian

I will attempt to answer but wait to be shouted down !!!!!

 

With the servo in place but pipe disconnected

 

1 you are pressing the brake pedal push rod into the servo.

 

2 the out put side of the servo has a push rod that pushes the brake master cylinder.

 

If you remove the servo completly you only have a direct push onto the brake master cylinder giving you a "direct " push hence more feel than with just the pipe disconnected.

 

HTHs and makes some sort of sence.

 

I will add quite simply I removed my servo after the first year and would never go back. JMHO though.

[baj25]

Thanks Ian, that makes perfect sense. The pedal shaft is a control input to the servo, and the servo 'amplifies' it and gives an output to the M/C. Next stop, a call to Tiger. Ta again, Brian

[baj25]

Having taken the servo etc apart, I reckon I need a rod that is 167mm from where the white donut meets the pedal to the end that locates in M/C. That makes my existing rod too short to modify. Anyone remember what length theirs is? What length is the Tiger rod? TIA, Bri