RC Truck and Construction  

Go Back   RC Truck and Construction > RC Truck's Ag and Industrial Equipment and Buildings > Construction Equipment > Construction Equipment Tech

Construction Equipment Tech Hydraulics, Electronics, General Engineering, ect in constr equip


Reply
 
Thread Tools Display Modes
  #1  
Old 02-11-2014, 09:30 PM
skippy skippy is offline
Newbie
 
Join Date: Jan 2014
Location: Vancouver Island
Posts: 7
skippy is on a distinguished road
Default pump flow for cylinder size

im scratch building a hoe that will hopefully resemble approximately a 390 size in 1/14..i work with hydraulics on a daily but im just not all to sure about the requirements for such small stuff...basically the pump is a premacon 900ml per min with relief valve, and im planning on using 7/8 cylinders from clippard, what i want to know is will the pump work for this size of cylinder or should i go a touch smaller, the goal is to have as much power as i can but still remain fairly quick. any help is much appreciated
Reply With Quote
  #2  
Old 02-12-2014, 02:59 AM
Lil Giants's Avatar
Lil Giants Lil Giants is offline
BANNED
 
Join Date: Aug 2010
Location: Saskatchewan
Posts: 4,431
Lil Giants has disabled reputation
Default Re: pump flow for cylinder size

You running this pump on 3s? 900ml/min seems a bit low.

My Vario uses probably the same pump and on 4s it seems a bit slow sometimes when operating all 4cyls at once. I'm running close to 35bar, which is pushing my luck to blow a hose! but so far no problems.
__________________
Sharing knowledge is one thing that defies basic arithmetic logic --- the more you share, the more you get!

Joe
Reply With Quote
  #3  
Old 02-12-2014, 09:51 PM
skippy skippy is offline
Newbie
 
Join Date: Jan 2014
Location: Vancouver Island
Posts: 7
skippy is on a distinguished road
Default Re: pump flow for cylinder size

i was planning 4s, i guess go one notch smaller then eh
Reply With Quote
  #4  
Old 02-12-2014, 10:14 PM
Lil Giants's Avatar
Lil Giants Lil Giants is offline
BANNED
 
Join Date: Aug 2010
Location: Saskatchewan
Posts: 4,431
Lil Giants has disabled reputation
Default Re: pump flow for cylinder size

A notch smaller? as in cylinder bore?

The stick cyl is 22mm, which is nearly equal to 7/8; while the dual boom & bucket cyls are smaller... maybe 18mm... can't recall exactly, pretty sure it's 18mm.

18mm is good enough for bucket power, but depending on length of boom & stick & the weight of the two arms, plus what attachments you might use (my screener bucket is really heavy when full of dirt), dual 20's would be better.
__________________
Sharing knowledge is one thing that defies basic arithmetic logic --- the more you share, the more you get!

Joe
Reply With Quote
  #5  
Old 02-13-2014, 12:53 AM
skippy skippy is offline
Newbie
 
Join Date: Jan 2014
Location: Vancouver Island
Posts: 7
skippy is on a distinguished road
Default Re: pump flow for cylinder size

yeah sorry i ment one notch smaller in the bore cylinder ive been thinking of using 7/8s for the stick and 9/16 for the rest but the difference is somewhat large..though doing one to scale it only needs to be 1/2..i just want to make sure that it will have good power
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 07:26 PM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.