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  1. mustangs

    Single Axis Rotation Bearing Selection

    I have a rack of solar panels at 15 deg to vertical, that will be rotating about the vertical axis and haven't really done any bearing selection in quite some time. The weight of the rack and panels is about 4000 lbs. The question is, what type of bearings should I use for this application...
  2. mustangs

    cooling steam to water

    Hi all, I have a machine that is generating steam at atmospheric pressure. The steam passes along about 10 feet of piping and then through a series of condensers. After leaving the condensers, the steam continues to flow out of the system and eventually into the atmosphere. The steam at...
  3. mustangs

    Vacuum Pumps-PD vs centrifugal

    Does anyone know how to relate the horsepower and cfm of a centrifugal pump to a positive displacement pump? Are there any conversion factors to relate the two in terms of the amount of liquid that can be picked up by each one for a given height? thanks Marc
  4. mustangs

    Hydrostatic Drive vs Aux Engine

    Anyone know the benefits to using a hydrostatic drive over just an auxillary engine. I'm updating a vacuum truck and am thinking about using a hyrdostatic drive instead of an auxillary engine, so any poblems that are commonly found would be good to know as well. Thanks
  5. mustangs

    Increased grease life in gearboxes

    Is there any type of grease product that can be put into a enclosed gearbox, (not sealed, just protection from the elements) so that once the unit is put together I wouldn't have to add more grease for the life of the box. I'm trying to avoid using semifluids mainly because I don't want to...
  6. mustangs

    Torque calcs for 1st and 5th or 6th gear

    I need to know the basic method for calculating torque at the flywheel and the wheels of a car. Any car will do, I have the gear ratios inside the transmission but need to know the ratios in the diff. I then need to determine (assuming no losses or any kind of torque conversion device) the...
  7. mustangs

    Supporting a 30' sign

    I am a mechanical engineer and have been given some sturctural work to do. We are erecting a 30 ft. tall sign that is 8 ft. wide and about 15 in thick. It's one of those large sign that you see outside of a plaza/stripmall. It's supported by two square posts that are about 12 in X 12 in. I...
  8. mustangs

    Softening Automotive Antifreeze

    I am recycling recovered glycol (ethylene, aircraft deicing fluid) and turning it into automotive antifreeze. The only problem I have is that the antifreeze is needs to be softened to meet some manufacturer's automotive spec. I am a mechanical engineer and not too proficient with chemistry...
  9. mustangs

    gylcol removal and concentration using RO

    We are doing research trying to concentrate glycol up to about 8-10% using an RO unit. Just wondering if anyone knows of anyone who is currently doing this that we can contact for more information on how to go about it. At the same time we are removing glycol from .05-.2% EG solution and...
  10. mustangs

    reverse osmosis

    I am doing tests on concentrating airport glycol and was wondering what exactly a "dalton" represents. I came across the term while trying to learn more about how the systems work. If anyone has any information on RO units or can help me with the unit it would be a great help.

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