timber crabe hydraulics

[openspaceman]

One spool is adjustable, I will need to try it screwed right down.

 

That sounds like you will be throttling it on the spool, which may cause heating unless it's a closed circuit system.

 

I've previously done away with the quick connectors when they restricted flow too much and caused the oil to heat.

[briquette_seller]

New issue, as recently upgraded my tractor.

Tractor puts out 110 litres a minute. Manual spools, only one seems to be adjustable.

 

Previous tractor put out 85 litres a minute

[briquette_seller]

That sounds like you will be throttling it on the spool, which may cause heating unless it's a closed circuit system.

 

I've previously done away with the quick connectors when they restricted flow too much and caused the oil to heat.

 

Open circuit hydraulics

[treequip]

New issue, as recently upgraded my tractor.

Tractor puts out 110 litres a minute. Manual spools, only one seems to be adjustable.

 

Previous tractor put out 85 litres a minute

 

And there is your answer, too much flow for the valve, a flow divider would sort the problem

[briquette_seller]

And there is your answer, too much flow for the valve, a flow divider would sort the problem

 

Ok.

Any more information would be much appreciated

[treequip]

Ok.

Any more information would be much appreciated

 

Assuming excess flow is the problem........

 

A flow divider will do what it says on the tin, a part of the flow goes to the service and any not required goes to tank or another service via a high pressure carry over. They are usually adjustable to use more or less of the flow on offer.

 

A flow divider would be fitted in the feed and can be independent, or if your valve block is modular it can be incorporated into that.

[briquette_seller]

Assuming excess flow is the problem........

 

A flow divider will do what it says on the tin, a part of the flow goes to the service and any not required goes to tank or another service via a high pressure carry over. They are usually adjustable to use more or less of the flow on offer.

 

A flow divider would be fitted in the feed and can be independent, or if your valve block is modular it can be incorporated into that.

 

http://vi.raptor.ebaydesc.com/ws/eBayISAPI.dll?ViewItemDescV4&item=311397649264&category=48718&pm=1&ds=0&t=1481316651898

 

Like this?

[treequip]

 

Like this?

 

That's the sort of thing, make sure it matches your pump output

[openspaceman]

http://vi.raptor.ebaydesc.com/ws/eBayISAPI.dll?ViewItemDescV4&item=311397649264&category=48718&pm=1&ds=0&t=1481316651898

 

Like this?

 

 

These are interesting devices but as they have a high pressure carry over be aware that the flow dumped via them will be dumped from whatever pressure the main service is operating.

 

As pressure times flow is power then power dissipated in the whole flow will be proportional to the power dissipated in the load i.e the heating effect will be the same as if the whole flow was doing work at the same pressure as the load (because the bypass flow is doing no work it will all be expressed as heat)

[briquette_seller]

Thanks for all your help, much appreciated