Hydraulic ram for IC engine cylinder

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Hydraulic ram for IC engine cylinder

This topic has 8 replies, 7 voices, and was last updated 1 October 2024 at 06:30 by Diogenes.

Viewing 9 posts - 1 through 9 (of 9 total)

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30 September 2024 at 14:30 #756770
Mick Bailey
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@mickbailey28509
I have some 1 5/8″ diameter steel that’s cut from scrap hydraulic rams. I’ve been using pieces for many years instead of M/S and it machines nicely. Would this be suitable for an IC engine cylinder? I need a finished OD of 1.5″ and this would do just nicely.
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30 September 2024 at 14:40 #756772
Brian Wood
Participant
@brianwood45127
Mick,

I don’t see why not, it is quality steel, resistant to bending, whether or not that is important to your planned use I don’t know.

Others may have different views.

Regards Brian
30 September 2024 at 15:10 #756777
JasonB
Moderator
@jasonb
It is something I have thought of using and have seen others use it but not found a source for short lenghts. With it’s already honed bore it should work well.

It would be idea for a single Viton ring which are less hastle than making iron rings. Just 5% of cross section compression of the ring.
30 September 2024 at 17:21 #756815
bernard towers
Participant
@bernardtowers37738
I think hes talking about the rams not the cyls
30 September 2024 at 17:31 #756820
noel shelley
Participant
@noelshelley55608
It will be good steel and hard chromed, though of little matter if only being used as stock – I take it you are referring to piston rod ? Good Luck Noel.
30 September 2024 at 18:09 #756831
Nick Wheeler
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@nickwheeler
On 30 September 2024 at 17:31 noel shelley Said:

It will be good steel and hard chromed, though of little matter if only being used as stock – I take it you are referring to piston rod ? Good Luck Noel.

The hard chrome can be a bit challenging to cut through if using a small lathe. You can salvage good quantities of similar material from used Macpherson struts(Vauxhall Omegas provide about 500mm of 22mm diameter rod) and smaller diameters from the ubiquitous gas springs.
30 September 2024 at 18:45 #756835
bernard towers
Participant
@bernardtowers37738
I find that when machining hyd ram rods its easier to feed along the work with a deepish cut this peels the chrome off easily
30 September 2024 at 22:53 #756879
Mick Bailey
Participant
@mickbailey28509
The chrome comes right off without any problem. I wondered about the wear characteristics when machined as a cylinder for a slow revving engine. I’m thinking of using a cast iron piston.

The honed hydraulic tube Jasonb refers to only seems to come in 6m lengths. It would be a nice source of material to get hold of different sized offcuts as the wall thickness can be quite hefty.
1 October 2024 at 06:30 #756891
Diogenes
Participant
@diogenes
Piston of CI probably best choice of material and should be fine, lapped to a good fit you might get away without using rings for a display engine. I’d expect wear to be virtually negligible once it’s all settled down.
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