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  1. RossABQ

    Transmission failures

    While I prefer a manual, their relative unpopularity in the US market has led mfr's to use some sketchy stuff. New Venture 1500 5-sp in my '98 S10; described by all the shops I've been to as a "throwaway" unit. Rebuilding requires special jigs the shops don't care to invest in, and parts are...
  2. RossABQ

    Run chilled water piping on building exterior?

    Can you create a chase around the piping? Are we talking about 3" piping or 12"?
  3. RossABQ

    Air Quality Control in a large space

    Is flour dust a consideration? I worked as an intern in a very large commercial bakery and it had high air flows to dissipate and collect flour dust in the mixing areas. They were mixing bread dough in dumpster-sized bins.
  4. RossABQ

    Cooling tower - Upgrading Single 60 ton Chiller to double 40 Chillers

    What are your ambient conditions? Makes no sense to have 100% OSA. Even switching to 50% OSA might eliminate the shortfall in cooling.
  5. RossABQ

    Cooling tower - Upgrading Single 60 ton Chiller to double 40 Chillers

    Your peak condenser water flow (both new chillers on) is going to go up by 33%, which is something the tower(s) are not going to like. Even the CW piping may be undersized for that flow.
  6. RossABQ

    Pop-up Piston and Flame Front in an L-head Engine

    I have a Ford flathead V8. They thrive on turbulence of the fuel mix, created by a quench. The mantra with these is to have around 0.050" clearance between piston and top of combustion chamber (with fully torqued head gasket). Stock these engines had up to 1/8" clearance on the driver's side...
  7. RossABQ

    Is it better to have a lot of small fans in a system or fewer bigger fans?

    An advantage I have heard is that smaller motors are easier to get when one fails, larger motors can be hard to find on short notice. I've mainly seen these on installations where zero-downtime is a hard requirement. If one fan unit fails, the others in the array are ramped up to compensate...
  8. RossABQ

    How to refuel a diesel generator installed on a roof

    What is the standby load? Any chance a bank of PowerWall batteries could do the job? Is the genset to allow indefinite continued operation, or an orderly shutdown/evacuation (keeping the elevators operational)?
  9. RossABQ

    Reciprocating Compressor

    Will this have an isolated pad, or an inertia base? If it doesn't it will shake the building.
  10. RossABQ

    Grade Mounted Evap Cooler - Drain?

    Assuming these are residential units, where you take the drains depends a lot on water quality. If you have a saline (high mineral content) water source, the further concentration of the salts in the coolers will kill vegetation.
  11. RossABQ

    Kettering Dual Points Theory

    The Brit bike ignitions (by Lucas) had a dedicated coil and set of points for each cylinder, running on a common ignition cam. Not a dual-point (or triple) system in the context of the OP's system.
  12. RossABQ

    flange seal c1910

    Is the seal/gasket in the area above the spigot's "dovetail" looking portion? I have seen old steam flanges that had something similar to prevent a direct path in case of a gasket failure, essentially a labyrinth secondary seal.
  13. RossABQ

    Distortion ?

    First thing I would ask an RS owner who had a HG failure after replacement of the faulty HG is, "How much did you crank the boost controller?" Second would be "Which aftermarket tune are you running?"
  14. RossABQ

    Is it piston rings or valve stem seals? ;/

    I think it's smoking all the time, just not enough volume of gases to make it easily visible. Do you have a borescope? Pull the plugs and take a look at the pistons with it. Clean around the edges = bad rings.
  15. RossABQ

    cilled water quality

    True, highly purified water will do that, but use of single-stage RO water is very common where hardness is high.
  16. RossABQ

    Unusual ticking noise in 4stroke 1 cylinder engine! VIDEO INCLUDED!

    Sounds like you've narrowed down the problem. Just thought I'd toss this in... I noticed a virtually identical noise on a 650 Triumph twin, while setting the timing - just before the valve began to open, and just before it started to close, it would make a noise like that. The motor turned out...
  17. RossABQ

    LPG Burner Setting

    Do you have drip legs ahead of each regulator?
  18. RossABQ

    Interview questions and attitude for a particular case

    It is also possible that many of those who left did so to ensure their pension rights, or simply retired, or were encouraged to leave to bring in cheaper, younger talent. All you can do is ask in the interviews, and judge the position they offer on its merits.
  19. RossABQ

    How to calculate a dynamic load due to changing acceleration at the end of a cantilever?

    This appears to be an X-Y carriage? You haven't given us the tool weight, only the carriage weight.
  20. RossABQ

    Effects of covering portion of an axial fan blade?

    AMCA has some excellent materials on system effects, for instance: https://youtu.be/PU_kLyamADY Much more in their papers.

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