Servo location/mounting

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DUF2 ‘65 Elf
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Servo location/mounting

Post by DUF2 ‘65 Elf »

I am about to fit a servo to my ‘65 Elf.
Which is the best/preferred location to fit & mount the servo?
I would like to install it so it takes up as little space as possible and so that it does not interfere with or make things inaccessible.
Any advice or pics would be great, many thanks.
bwaminispeed
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Re: Servo location/mounting

Post by bwaminispeed »

If you figure that out, let the rest of us know, because, we would all like to know that answer........

Basically, they usually go on the right hand flitch panel, above the clutch housing, taking up all kinds of space, and, generally making everything on that side inaccessible or, hard to get at..........

They can be mounted inside as well, under the parcel shelf........
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Re: Servo location/mounting

Post by DUF2 ‘65 Elf »

What about under the wing? Obviously protected from the elements.
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Re: Servo location/mounting

Post by bwaminispeed »

That would probably work too, but, a bit awkward to get at to hook up......and bleed.....
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Re: Servo location/mounting

Post by Spider »

bwaminispeed wrote:That would probably work too, but, a bit awkward to get at to hook up......and bleed.....
Good call on that.

There's also an Air Inlet and Air Filter in most of them too. The Air taken in here, eventually ends up going through the engine, so apart from risking wear to the Servo, it may (likely) increase wear to the engine.
Dearg1275
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Re: Servo location/mounting

Post by Dearg1275 »

Some of the last Works cars had the servo mounted under the drivers side wing. The air valve was supplied from a filter under the bonnet so away from the crud. You do end up with a bunch of hoses and pipes to take through the inner wing. These too can be annoyingly in the way.

A good way to go is to arrange the brackets to be quick release in some way and use flexible hydraulic pipes for the brake lines. You can then just throw a thick cloth over the wing and lift the servo out and leave it hanging on the wing while you fix what ever it is you couldn’t get at before.

D
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Re: Servo location/mounting

Post by -mini- »

Dearg1275 wrote:A good way to go is to arrange the brackets to be quick release in some way and use flexible hydraulic pipes for the brake lines. You can then just throw a thick cloth over the wing and lift the servo out and leave it hanging on the wing while you fix what ever it is you couldn’t get at before.
D
Does anyone know if you can buy pre made flexible pipes for this with fittings already attached? Or any advice on what is needed to make them up. Tia.
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Re: Servo location/mounting

Post by Dearg1275 »

If you google custom brake hoses you will find many providers. The company I have used and the quality and finish is excellent.

https://auto.helperformance.com/custom-brake-hose

Best to mock it up first to get your lengths correct before you order. Not cheap.

D
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Re: Servo location/mounting

Post by DUF2 ‘65 Elf »

Anyone got a picture of an under wing servo and an under dash servo?
surfblue63

Re: Servo location/mounting

Post by surfblue63 »

Got a picture of an under rear seat servo. Note accumulator tank.
Servo.jpg

You can view the rest of the car here

https://www.swva.co.uk/classic-car/aust ... tion-1974/
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Re: Servo location/mounting

Post by Fanfaniracing »

Here is how i fit mine. Could even fit sbout 5cm more up...
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Re: Servo location/mounting

Post by DUF2 ‘65 Elf »

Another silly question!
Can the servo be orientated in any position? Or can it be upside down, on it’s side, on it’s end or whatever?
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Re: Servo location/mounting

Post by Fanfaniracing »

I think it doesn't matter how it is mounted. I have seen all kind of positions in different cars.

But note that if it is pointing down, it will be more difficult to bleed the air out...
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Re: Servo location/mounting

Post by mk1 »

In my experience servos are quite sensitive to orientation, best to stick with the general orientation front to back & rotational that you see in the standard fitment. Servo's can be tricky to bleed at the best of times, you do not need the extra grief of it being in an odd orientation too.
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Re: Servo location/mounting

Post by AndyPen »

mk1 wrote:In my experience servos are quite sensitive to orientation, best to stick with the general orientation front to back & rotational that you see in the standard fitment. Servo's can be tricky to bleed at the best of times, you do not need the extra grief of it being in an odd orientation too.
What he said ;-) On our old rally cars we always kept them nose up when located inside.
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dodge44
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Re: Servo location/mounting

Post by dodge44 »

Don't know if it will help but have scanned and uploaded an original AP Lockheed fitting document supplied with new units back in the 1980's. Note 5 on page 3 states:

'With the aid of the mounting brackets and fixings provided in the kit install the servo unit with the hydraulic slave cylinder outlet port inclined upwards between 25 and 45 from the horizontal plane. (See Fig.2). The air control valve should be situated at least 30 below the centre line to assist when bleeding the hydraulic system. (See Fig.3).'

https://onedrive.live.com/embed?cid=A20 ... k5xGI&em=2
DUF2 ‘65 Elf
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Re: Servo location/mounting

Post by DUF2 ‘65 Elf »

dodge44 wrote:Don't know if it will help but have scanned and uploaded an original AP Lockheed fitting document supplied with new units back in the 1980's. Note 5 on page 3 states:

'With the aid of the mounting brackets and fixings provided in the kit install the servo unit with the hydraulic slave cylinder outlet port inclined upwards between 25 and 45 from the horizontal plane. (See Fig.2). The air control valve should be situated at least 30 below the centre line to assist when bleeding the hydraulic system. (See Fig.3).'

https://onedrive.live.com/embed?cid=A20 ... k5xGI&em=2
dodge44, that is great, very helpful, thanks very much. I could have dropped a big bollock without that info!!! Most pictures I have seen seem to show the servo as being mounted level, which is contrary to these instructions, so this info is invaluable to me.
As it happens, my servo arrived today, without any fitting instructions, also with the air inlet valve damaged, a replacement is on it’s way.
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Re: Servo location/mounting

Post by mk1 »

If a servo is mounted anything but NOSE UP it will be impossible to bleed.
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Re: Servo location/mounting

Post by DUF2 ‘65 Elf »

Well my new servo arrived today. I have had a quick look and under the bonnet seems rather tight and would make access to the clutch etc awkward.
I had a quick look under the dash in the passenger side and this looks favourite, but the heater is not fitted at the moment. I shall refit the heater and check for space, but suspect this location looks the better place for me.
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Re: Servo location/mounting

Post by Fanfaniracing »

I have changed my fresh air heater for a small non fresh air hester box.

So i have more Space for the servo under the dash...
Last edited by Fanfaniracing on Fri Dec 06, 2019 10:56 am, edited 2 times in total.
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