markk

iTrader: (2)

the electric pumps struggle under very fast high load scenarios, hence we dont use them.

J1mbo

iTrader: (1)

Thanks Mark was waiting for you to come along

So is there a advantage you know of using a leecy pump on track?

markk

iTrader: (2)

I ran a leccy pump onmy last car and for normal use, i.e fast flowing bends, or just turning at a slow rate it was great, but as soon as you give it a quick rack and go from say near full left to full right very quicky(or vice versa) - e.g tight chicanes, the feckers near on lock up as your forcing the fluid faster than the pump pumps it.

Im not sure on what pressure comes out of the electric pumps, but iirc the grp a ZF is 150bar (off the top of my head) thats a hell of a lot of pressure in a pas system, i think the std pump was 90bar.

I even modded my electric system to up the pressure, still didnt work.

I fyou ran skinny tyres then you may get away with it.

on a track they work fine, is there an advantage, you would have to work out the losses used by both systems on and off load, but if the BTCC boys are running them there must be an advantage to it.

J1mbo

iTrader: (1)

Right so they give more feel on flowing corners but can't handle faster lock to lock turns to sum it up lol?

Chip

iTrader: (3)

j1mbo, tarmac rallys are generally much tighter corners and much lower speeds and far narrower, so much more steering input required.

botters

iTrader: (2)

if your after more lock you could always redrill the locating holes in the hub for the tca's to bolt to like the drifting boys do!

CossieRich

iTrader: (1)

If you use an electric pump you completely do away with the standard sapph power steering set-up, the pulley, the power steering fluid tank, pipe work and the likes? If so, could you relocate the alternator to where the power steering pulley is so that it is out the way of the heat from manifold and turbo?

Would this work, is it viable or am i being a helmet by asking?

foreigneRS

electric pump still uses the hydraulic rack Rich, so you need some pipes to that etc, but you are free to route them how you like.

another reason for circuit racers to use an electro hydraulic setup is that they can position the heavy pump where's best for weight distribution.

CossieRich

iTrader: (1)

Nick,

Cheers mate how about relocating the alternator to where the power steering pulley is at the moment? Feasable or not?

zippyobrien

iTrader: (2)

Can you put restrictors in the standard lines on a power steering set up to give me wieght.