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  1. ZacMech

    Changing Chain Drive Sprocket Ratio

    Hi all, Hopefully this will be a simple one, but was looking for some advice on chain drives. We have a drive system which is comprised of: 15HP variable speed DC motor -> Right angle 12:1 gear box -> 23T to 44T sprocket reduction. Total reduction of ~23:1 The issue we have is that the 12:1...
  2. ZacMech

    Different Pressure Demand on Different Pumps

    Thanks all for the excellent advice, I will try to update with a photo when the project is completed. Again, very much appreciated.
  3. ZacMech

    Different Pressure Demand on Different Pumps

    Thanks for the responses, that makes perfect sense, always nice when that happens! A question though, since we do need reverse flow, could a tandem center directional control valve be used on its own (with no flow control)? That way, when the pump is started the flow goes through the...
  4. ZacMech

    Different Pressure Demand on Different Pumps

    The flow divider is an FCR-51-1 from Brand Hydraulics (it is the 0-50gpm model) which is grossly oversized for this application, but it happened to be readily available. A properly sized one is on order. Also, a detent valve is going to be used instead of the present spring return. It is easy...
  5. ZacMech

    Different Pressure Demand on Different Pumps

    Ok, I checked into a few things. First off, the schematic for the present setup - with the Muncie pump - is attached below (apologies if there are any small inaccuracies, but hopefully the idea is clear). budt - for pumps 1) and 3) the gauge was connected directly before the motor. For the...
  6. ZacMech

    Different Pressure Demand on Different Pumps

    Hi, hopefully someone can clarify something for me. The application is the use of a cement mixer as a vessel to mix compost (on my father's farm). The drum of the mixer must rotate at a slow speed (~3rpm) and is powered by a hydraulic motor. Three different pumps have been used so far on the...
  7. ZacMech

    Furnace Tap Hole Question

    Hi all, Not sure if this is the best area to post this, but here goes. I'm working at a large smelting facility. The tap hole at the slag end of our furnace has the typical method of plugging/opening. That is, a clay gun as well as a drill rod in a single unit. However, while the slag is...
  8. ZacMech

    Controlling Motor Speed CAT IT28G Auxiliary Circuit

    Thanks very much for the quick responses. This forum has been a really great way to learn about hydraulics, especially since I find it really interesting and would really like to get into the field after graduating. Bud, that is actually how the motor is connected now. The Q-Q lines are...
  9. ZacMech

    Controlling Motor Speed CAT IT28G Auxiliary Circuit

    Hello, I'm a Mechanical intern and I have a (hopefully) simple question. The plant where I'm working uses a an auger to sample bulk material that we receive. The auger is powered by a hydraulic motor that is mounted on a frame, and the frame can be attached to the boom on the CAT loader. The...
  10. ZacMech

    Method For Autonomous Sampling of Various Materials

    Hi All, I've been looking through the forums for quite a while now for any relevant info on my problem and this seemed like the most appropriate place to post. I'm presently doing a workterm at a smelting facility that receives many various "custom feeds", these feeds need to be sampled in...

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