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  1. lawayosh

    Hammer size for driving sheet piles

    You want the driving head to spread the impact over as much of the sheet (pile) head as possible. Will overall dimensions of the hammer allow driving singles without interference with adjacent sheets? Yosh
  2. lawayosh

    Paint is Fading Looking for Test

    Presume that exposure is to sunlight if UV is causing the fading. What type of coating is your supplier using? If you have the ability to specify the coating it could solve the problem. Yosh
  3. lawayosh

    Top Fuel bike engine

    Don't forget to enter the driver variable into any on-track performance numbers. As Rod is well aware, the applicator of pedal to metal does make a difference. Even if the '68 Camaro did make 500 HP, just switching drivers could produce faster times. Having played with a '69 Z/28 back when...
  4. lawayosh

    Welding of Bent Rebar

    Take a look at D1.4 Section 4.2.6 and Figure 4.2 which call out a minimum distance from the point of tangency equal or greater than 2 bar diameters. Yosh
  5. lawayosh

    FRP Question

    How about an adjustable T-square and a little basic trig? Yosh
  6. lawayosh

    Right/Left Wound Beehive Spring Mystery.

    As far as I know, the beehive shape allows a bit more lift or float before the spring binds and bad things happen. Yosh
  7. lawayosh

    Thread depth for Hot Dip Galv

    How long are the finished rods? If possible, it is recommended that threaded items have excess zinc spun off as they come out of the zinc kettle. Some galvanizers are equipped to do this. Spinning helps to provide a more uniform accumulation of zinc in/on the threads enabling easier nut...
  8. lawayosh

    Mechanical water heater

    How about using a marine diesel fired water heater such as available from: http://www.itrheat.com/waterheater.html
  9. lawayosh

    Heavier section for 29er wheels?

    Tension of each spoke has to maintain roundness of the rim regardless where they are in relation to the direction of loading. The portion of the rim being compressed can reduce spoke tension. However, if the wheel is to have a chance of staying round and true, all spokes have to have been...
  10. lawayosh

    Heavier section for 29er wheels?

    Tension of the spokes has to be right and depends on the type of wheel, rim, hub, size of rider, riding surface, etc. Commercially built wheels are built to the lowest common denominator, acceptance level, price point and are usually not tensioned to very high levels. Custom wheels are hand...
  11. lawayosh

    Pipe sleeves in concrete

    Typically, sealing of annular space around piping is based on requirements for preventing water penetration or fire resistance. For centering/support of pipe and filling the gap a link-seal is commonly inserted then caulked with a sealant. This type may also be fire rated. Fire resistant...
  12. lawayosh

    Old Engines are inefficicent at creating power/torque,WHY?

    Rod - Practioner of a Black Art indeed. There have always been lots of parts selector/assemblers out there. Some working to very precise tolerances and clean to a fault. But, not many have been able to make every motor they touch the one to beat. I thought that I was OK at tuning, but...
  13. lawayosh

    PVC Bolt Sleeve for future Anchor Bolt

    Precast piles have seen rebar dowels (pourable cement or epoxy) grouted into sleeves of material similar to metal flex conduit. The spiral convolutions of the flex and rebar deformation provide resistance to pull-out. Yosh
  14. lawayosh

    peagravel/sand/3/4minus compaction

    A flowable, cementitious fill material, whatever the acronym, would seem to be the quickest, easiest and cost effective as well. Something like what we refer to as 1 to 2 sack (90 to 180 lbs of cement per cubic yard) sand/cement slurry. If you are in a real hurry an accellerant could be added...
  15. lawayosh

    Old Engines are inefficicent at creating power/torque,WHY?

    The 475 number is about what Traco was supposed to have been getting out of their Trans-Am 302 CSB according to what I remember. A well tuned in-the-car stock Z/28 would be around 375, sometimes a bit more. The Penske cars were another matter. A combination of motor, drivetrain, chassis...
  16. lawayosh

    Right/Left Wound Beehive Spring Mystery.

    I recall SBC springs that had a brown coating/paint on them back in the 60's. They were what we used with the Duntov grinds from the Chevy parts counter and to keep the cost down when we started using aftermarket cams. Of course, it wasn't long before we just had to have dual spring set-ups...
  17. lawayosh

    Old Engines are inefficicent at creating power/torque,WHY?

    Something that you have to consider is how much influence the bean counters had on what made it to the showroom. Making more HP out of the same size envelope takes better materials along with more engineering and manufacturing sophistication. There were people at the Big Three that knew how to...
  18. lawayosh

    Old Engines are inefficicent at creating power/torque,WHY?

    I believe back in the 60's that the High Priest of Horsepower, Reverend Mr. (Keith) Black stated that "How fast you go is directly proportional to how much money you spend!" As we could not afford one of his drag motors we were not quite as fast as others less fiscally challenged. Back then...
  19. lawayosh

    Digital torque wrench

    Hey Guys - If you haven't noticed, digital readouts are almost a necessity for a large segment of the current younger generation(s). To use a vernier or dial caliper or vernier micrometer it takes a bit of observational and deductive skill in conjunction with the ability to perform addition...
  20. lawayosh

    What welder shall I buy

    House? What does your local Building Department have to say about it? Where? In the U.S. structural welding is (and should be) pretty tightly regulated by building and welding codes, AWS D1.1 for example, and usually requires welders to be qualified by testing with inspection of fabrication...

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