Manufacture Hydraulic Pump?

[Vanisle]

I was wondering if anyone has made an actual working hydraulic pump. I think IHBuilder (forgive me if I butcherd your username, going from memory) said he has one in the works.

I planned to try making one with two external teeth gears that mesh inside the pump housing. Like this:

http://en.wikipedia.org/wiki/File:Gear_pump.png

Is it really that easy, assuming you can get the tolerances right?

Obvoiusly one with internal teeth would be harder to do (I just can't come up with an easy way to do internal teeth):

http://en.wikipedia.org/wiki/File:Gear_pump_3.png

A rotary vane pump looks too hard to me. Anybody care to share their ideas or successes?

Richard

[ihbuilder]

Originally Posted by Vanisle

I was wondering if anyone has made an actual working hydraulic pump. I think IHBuilder (forgive me if I butcherd your username, going from memory) said he has one in the works.

I planned to try making one with two external teeth gears that mesh inside the pump housing. Like this:

http://en.wikipedia.org/wiki/File:Gear_pump.png

Is it really that easy, assuming you can get the tolerances right?

Obvoiusly one with internal teeth would be harder to do (I just can't come up with an easy way to do internal teeth):

http://en.wikipedia.org/wiki/File:Gear_pump_3.png

A rotary vane pump looks too hard to me. Anybody care to share their ideas or successes?

Richard

yes I have 1 in the works ,I'll be running another batch of wheels ,when they're done then I can make the housing + cylinders . I'm not going to go in detail till I know it works and efficiently .

IHSteve

[Vanisle]

Understandable. Kind of seems like chasing the pot of gold at the end of the rainbow. Give me about 6 months and I'll let you know how mine turns out. Its a shame that hydraulic parts are so expensive.

[td9clyde]

where is a good place to order pumps? and valves ?

[ihbuilder]

Originally Posted by td9clyde

where is a good place to order pumps? and valves ?

Clyde , In the usa you have PMD but from what I hear he has trouble getting them in Next place is in germany . I got a quote from these guys TTM models . Ed ( jammer ) has dealt with them .

IHSteve

[Vanisle]

I have bought some things from TTM a few years ago with no problems. Kampfer also sells a hydraulic pump:

http://www.123modellbau.de/modules/s...e=&cPath=51774

[ihbuilder]

Originally Posted by Vanisle

I have bought some things from TTM a few years ago with no problems. Kampfer also sells a hydraulic pump:

http://www.123modellbau.de/modules/s...e=&cPath=51774

I saw 1 of them on german fleabay was wondering where it came from

IHSteve

[Vanisle]

UMs also sells pumps:

http://www.umstech.in/searchproduct....d_201010218555

Doesn't FGD have some in his projects?

[RCLogger]

Yes FGD has one of those pumps ( umstech ) I haven't heard how well it works, any updates

It would be great if we could get some pumps closer to home ...


greg

[Vanisle]

I hope they are OK. I just bought a couple recently, not yet received.

Richard

[ihbuilder]

Originally Posted by Vanisle

I hope they are OK. I just bought a couple recently, not yet received.

Richard

let us know how long it takes to get them , took fdg awhile . I'm still pondering 1 for my 5900 . the 1 I making is to big for a truck . It's for the pan .

IHSteve

[FreddyGearDrive]

Originally Posted by Vanisle

I hope they are OK. I just bought a couple recently, not yet received.

Richard

Richard,those pumps are ok if,your going to use on a dump or something that doesn't require the pump to run over a minute.I purchase a couple of them,& cooked one in a matter of minutes. If you read the spec sheet that comes with the pump.It tells you to only run in short spurts. One of them I modded to use a different motor,now it's perfect. Your still way ahead useing just the pump & changing the motor,vs $300 0r more.
It's all in what you want it to do.
I sure hope UMS does a better job gittin them to you,than they did w/me!
FGD

[Vanisle]

FGD - thanks for the info. I suspected that the motor might need to be replaced. I was most interested in the gear pump itself. I always like to order more than I need and at that price, you can't go wrong. I ordered on Oct 11th and supposedly (according to an email this week) the order will be shipped this week.

Edit: On its way by FedEx, delivery in 4 days.

[td9clyde]

would one of those run a dozer blade and tilt ? .......if i changed the motor? and also would one of those run my ts 14? steering and all that stuff ? if the motor was changed? basically would the pump hold up to something like a 550 motor? 7.2 bats running it? or is there something betteras far as pump wise i can always change motors and make my own hydralic tanks and they can be just like the real thing lol ?

[rc_farmer]

Originally Posted by FreddyGearDrive

Richard,those pumps are ok if,your going to use on a dump or something that doesn't require the pump to run over a minute.I purchase a couple of them,& cooked one in a matter of minutes. If you read the spec sheet that comes with the pump.It tells you to only run in short spurts. One of them I modded to use a different motor,now it's perfect. Your still way ahead useing just the pump & changing the motor,vs $300 0r more.
It's all in what you want it to do.
I sure hope UMS does a better job gittin them to you,than they did w/me!
FGD

FGD, I am about to purchase a couple of them, what motor did you upgrade them too? Just talked to them and they are in stock.

Thanks

[johnboyee]

These look just like the pumps hausl fuel pumps the airplane guys use on their turbines, thought I was on to something, but cost is still @ the $300 area, bit they mention they make custom micro gear pumps,
http://shopping.netsuite.com/flightworks

[Vanisle]

$300 is a lot better than the $800 they quoted me, but still too much I think.

[RCLogger]

At one time Flight Works said they were going to make a hyd pump. Has anyone tried a fuel pump from Flight Works ?

greg

[Bellien]

Originally Posted by Vanisle

I was wondering if anyone has made an actual working hydraulic pump. I think IHBuilder (forgive me if I butcherd your username, going from memory) said he has one in the works.

I planned to try making one with two external teeth gears that mesh inside the pump housing. Like this:

http://en.wikipedia.org/wiki/File:Gear_pump.png

Is it really that easy, assuming you can get the tolerances right?

Obvoiusly one with internal teeth would be harder to do (I just can't come up with an easy way to do internal teeth):

http://en.wikipedia.org/wiki/File:Gear_pump_3.png

A rotary vane pump looks too hard to me. Anybody care to share their ideas or successes?

Richard

If you are still considering building a pump, have you considered using the sickle gear set out of a furnace oil pump?

[Vanisle]

I am still considering building one but I am a long ways from needing one so I haven't done anything with it. I do have the UMS pump (taken apart from the original motor that apparently doesn't last) that I will try first. I don't really know what a sickle gear set is ... but I just looked on google. Looks a little complicated for me (given my limited abilities) to make but maybe it would work if you could find one small enough from an existing pump. I think IHBuilder used a fuel pump sickle gear set for his pump that he built.

Guess I'll cross that hurdle when I get to it.