Recharging spheres Tecnosir

[RobboMC]

What's the gas volume in the spheres? Seems like what you want is a pressure vessel the same size with 800psi nitrogen inside it. Simply connect the two and allow pressure to equalise. Much easier than trying to take the car somewhere to be pumped up.

The normal source of Nitrogen would normally be a tyre retailer, however since tyres run at less than 50 psi they're regulators are smaller.
We will need a retailer wit a high pressure regulator, not expensive within reach of the home mechanic.

You then hire a gas bottle with a few thousand psi in it, fill your spheres and return the gas bottle and get your deposit back ( minus the cost of the contents of course )

Sounds simple in theory I know, but that's how it could work, unless a savvy tyre retailer is willing to buy a 400 psi regulator.

[BodgeItAndScarper]

What I was suggesting was that you'd hire a bottle (or rather, four) the right size and at the right pressure that you didn't need a regulator, you'd just connect it up.

[Rob Bell]

Ideally what you'd really want is a one-stop-shop that did everything for you.

I've tried to persuade Moulton in Bradford-on-Avon that this would be a good little business for them to get into - but so far to no avail...

[jaapaap1111]

I had a citroen classic garage to put nitrogen in my spheres as he had the same service for citroen suspension.... i only had tot take the low loss connector along cos the valves are different


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[beefio]

Where's Ian based? I might drop him a line. I'd be happy to supply the hydragas spheres to be modified and re-charged

You can just post your spheres to Ian and he'll sort and post back which costs about £350 or what I did is just brought 4 regassed spheres from Ian for £500 then you can sell your old ones, which saved the car being off the road.

I have to say I thought it was a bit expensive when I first looked in to, but since it's been done I think it is good value for money and transforms the ride, I enjoy drive my F so much more without crashing over rough roads!

How long they last only time will tell...

But the MS solution sounds like a reall winner, other than you'll have to take your car to them which may be a pain...but to save £300 probably worth it!

[Reckless Rat]

I get the impression that some of you are getting confused with regassing spheres and pumping the suspension. The pressure in the Nitrogen egg is (if I remember correctly) somewhere in the region of 280psi. This pressure allows the displacer unit to act as a spring. It has nothing to do with the ride height which is controlled by the volume (and pressure) of the hydragas fluid in the lower part of the displacer, which also has a restrictor valve to control damping. Varying the hydraulic pressure controls the ride height. Normally this is at around 400psi allowing the car to sit at 380mm. Varying the nitrogen pressure will affect the ability of the nitrogen egg to be displaced by suspension movement, which as it reduces allows the sphere membrane to fill the space lost by the gas, thus rendering the suspension harder and harder. Continued corrections of ride height do nothing other than raising the car which once the nitrogen has gone leaves you with the suspension effectively solid.

A regassed sphere should hold its gas for a long time and shouldn't need re-gassing unless the membrane has failed, in which case it's scrap anyway.
No attempts should be made to mess about with the nitrogen valve once a sphere has been so treated. Leave the bloody thing alone!

If you've had to reset the ride height more than twice there's something amiss somewhere. If the spheres are over 15yrs old (as most of them are now) then they're probably gas depleted and need servicing. Leaving be and continuing to use the car will ruin them, which is false economy given the low volume of spares available.

[BodgeItAndScarper]

I thought there must be roughly the same pressure either side of the membrane?

[Reckless Rat]

Not when unloaded...

[BodgeItAndScarper]

Ah, good point.

[Rob Bell]

Where's Ian based? I might drop him a line. I'd be happy to supply the hydragas spheres to be modified and re-charged

You can just post your spheres to Ian and he'll sort and post back which costs about £350 or what I did is just brought 4 regassed spheres from Ian for £500 then you can sell your old ones, which saved the car being off the road.

I have to say I thought it was a bit expensive when I first looked in to, but since it's been done I think it is good value for money and transforms the ride, I enjoy drive my F so much more without crashing over rough roads!

How long they last only time will tell...

But the MS solution sounds like a reall winner, other than you'll have to take your car to them which may be a pain...but to save £300 probably worth it!

Ta! And good point regarding selling on - although might be good to hoard a "spare" set in the event that a membrane fails (no way of repairing this to the best of my knowledge)

[ZSx]

Having spoke to Mike recently (on the phone) he said the re gassing solution will be self sealing and no welding required, he hinted that 1st August he will release this product. It should be, drill 8mm hole and screw in his valve, then pump it up with nitrogen to 17 Bar (I think that's the pressure he mentioned).

He also said that a supplier has let him down and the spring conversion has been delayed.

[Rob Bell]

Only a couple of weeks before the big reveal on the Hydragas solution then

[BodgeItAndScarper]

Having spoke to Mike recently (on the phone) he said the re gassing solution will be self sealing and no welding required, he hinted that 1st August he will release this product. It should be, drill 8mm hole and screw in his valve, then pump it up with nitrogen to 17 Bar (I think that's the pressure he mentioned).

I'm really looking forward to this.

If you want a pump to fill the spheres with air temporarily so you can drive to wherever will recharge them, bike air-shock pumps are reasonably cheap and go up to a high enough pressure:

http://www.chainreactioncycles.com/life ... prod155352

A lot of pumps on Ebay etc claim to pump to high pressure but in fact don't.

[jaapaap1111]

First picture of the new mike satur shocks and springs is on his site. It becomes more real...!

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[Rob Bell]

First picture of the new mike satur shocks and springs is on his site. It becomes more real...!

Can't find it? Only the spring replacement kit (that's under development)

[ZSx]

First picture of the new mike satur shocks and springs is on his site. It becomes more real...!

Can't find it? Only the spring replacement kit (that's under development)

The photos jaapaap1111 refers to, I believe, are the ones on this page http://www.mikesatur.co.uk/index.php?ro ... uct_id=833 and as Mike says in the blurb, "NOTE PICTURE ONLY SHOWS THE SPRINGS AND SHOCKS NOT THE FULL KIT"

I've not seen or heard anything else about the valve option... but this is the one i am most interested in, at this stage anyway

However at strong money the conversion kit (one linked above) will have to be a proven system for me to buy (with no issues like the Suplex and Ozzy kits).

[RSR92]

Having spoke to Mike recently (on the phone) he said the re gassing solution will be self sealing and no welding required, he hinted that 1st August he will release this product. It should be, drill 8mm hole and screw in his valve, then pump it up with nitrogen to 17 Bar (I think that's the pressure he mentioned).

He also said that a supplier has let him down and the spring conversion has been delayed.

This sounds amazing, who's going to be one of the brave pioneers to give it a go and do a how to ?

Perhaps me? Let's see how much it costs at release and maybe I'll re-prioritise some of my other plans and get this done instead...

[Rob Bell]

The photos jaapaap1111 refers to, I believe, are the ones on this page http://www.mikesatur.co.uk/index.php?ro ... uct_id=833 and as Mike says in the blurb, "NOTE PICTURE ONLY SHOWS THE SPRINGS AND SHOCKS NOT THE FULL KIT"

I've not seen or heard anything else about the valve option... but this is the one i am most interested in, at this stage anyway

However at strong money the conversion kit (one linked above) will have to be a proven system for me to buy (with no issues like the Suplex and Ozzy kits).

Thanks - I was being uber dense...

[ZSx]

Having spoke to Mike recently (on the phone) he said the re gassing solution will be self sealing and no welding required, he hinted that 1st August he will release this product. It should be, drill 8mm hole and screw in his valve, then pump it up with nitrogen to 17 Bar (I think that's the pressure he mentioned).

He also said that a supplier has let him down and the spring conversion has been delayed.

This sounds amazing, who's going to be one of the brave pioneers to give it a go and do a how to ?

Perhaps me? Let's see how much it costs at release and maybe I'll re-prioritise some of my other plans and get this done instead...

If and when he offers the valves I will buy them and fit them... but I will need to find a nitrogen refill station that copes with 17 bar!

When this happens I will write a how to.. but it sounds very easy TBH (as long as you have a hydra-gas pump, which I currently do not!)

[BodgeItAndScarper]

Having spoke to Mike recently (on the phone) he said the re gassing solution will be self sealing and no welding required, he hinted that 1st August he will release this product. It should be, drill 8mm hole and screw in his valve, then pump it up with nitrogen to 17 Bar (I think that's the pressure he mentioned).

He also said that a supplier has let him down and the spring conversion has been delayed.

This sounds amazing, who's going to be one of the brave pioneers to give it a go and do a how to ?

Perhaps me? Let's see how much it costs at release and maybe I'll re-prioritise some of my other plans and get this done instead...

If it's at the kind of price he's saying, I'll be right in there.