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  • Users: HydroScope
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  1. HydroScope

    Linear bearings safety factor

    My supplier when I asked for loading information in relation to a application I had, has given me some detials I would like to cross check with others here. Where a bearing has loading in two different axes. He combined there loads to determine a safety factor. I am curious if it is correct, I...
  2. HydroScope

    Linear bearings

    My supplier when I asked for loading information in relation to a application I had, has given me some detials I would like to cross check with others here. Where a bearing has loading in two different axes. He combined there loads to determine a safety factor. I am curious if it is correct, I...
  3. HydroScope

    Why is there no section on this forum for sales engineering?

    Hi There, I have fairly recently become a sales engineer, for a industrial automation company. having sucessfully found this website usefull for technical issues in the past. I thought I would come back for some so called side issues as an engineer in my case "selling" as a profession. The...
  4. HydroScope

    LPG substition for diesel engine

    Hi, diesel engine runing with LPG seems like a great idea here in australia diesel is much more expensive then petrol and LPG. It makes financial sense to convert from petrol to LPG but not to diesel/lpg because available kits dont seem to uses high levels of LPG substitution, what is the...
  5. HydroScope

    cracks in newly poured concrete pile

    Hi, I recently did some design work for some lighting columns, the piles are sitting in hard soil and rock. The soil/rock was first augered out at Dia 0.9 Meteres and rio cage put in. at various lengths in line with a geotech report, and used brinch Hansen for faliure type mode, safety factor...
  6. HydroScope

    Top Fuel Dragster

    Hi, I recently discovered the world of drag racing and wondered why top fuel dragsters dont combine their nitromethane with nitrous? I understand that nitromethane is already a combination of methane ~ CH4 and nitrous ~ N2O that is a liquid ~ CH3NO2, but beleive it would still burn in nitous...
  7. HydroScope

    LPG and NAT GAS conversion for deisel

    The buses in my city are diesel but they also use natural gas. This is done via a dual injector. I.e a small amount of diesel is used to ignite the natural gas. My question is, can this be done for say a turbo diesel commonly found in light commercial vehicles? or 4WD vehicles if so are there...
  8. HydroScope

    Liquid Hydrogen

    I would like to calculate how much energy is required theorectically to liquify hydrogen, My thermodynamics book has a table "ideal gas properties" which includes diatomic hydrogen, using enthalpy vs temp change from 300K to 20K, I came up with 3929 KJ/ Kg. that doesn't not include latent heat...
  9. HydroScope

    liquifying hydrogen

    I have used a table showing the ideal gas properties of hydrogen to find how much energy per KG of hydrogen needs to be done on hydrogen to liquify it. without considering heat of vapouration I get 3929 KJ/ Kg. heat of vapourisation is 445.7 KJ/Kg, Is this correct?
  10. HydroScope

    Internal Combustion Engine Or Fuel Cell Vehicles?

    This question also begins to ask is hydrogen the next fuel/energy carrier of the future? Let us ignore this debate as much we can, although when analysing risks to society from the fuels that run either a FC (fuel cell) or ICE (Internal Combustion engine) then it is impossible to ignore the...
  11. HydroScope

    highest brake thermal efficiency heat engine recorded?

    Hi guys I remeber a thread that discussed the difference between 2 stoke engines and 4 storke engines, one member pointed out that the highest acheived thermal efficiency was acheived by a 2 stoke engine in a large cargo ship, diesel cycle. I searched through the 40+ pages of threads title's...
  12. HydroScope

    HPDI vs low pressure air assisted direct injection

    Not sure if I have simply fell for all the hype but it seems that there are some good advantages to using low pressure air assisted direct injection. It's use seems more applicable for 2-storke engines as it can reduce amount of oil being injected aswell as petrol. But what about 4 stroke...
  13. HydroScope

    Sodium from ocean salt for generation of hydrogen

    I remember in high school my chemistry teacher put some sodium in water and hydrogen gass was produced which went boom!! can you extract sodium from sodium chloride (ocean salt) avoiding electrolysis(energy expensive process) and with out expelling chlorine gass. All while not spending a lot of...
  14. HydroScope

    www.dynamicfuel.com

    I came across this website and find their product confusing. They claim that the electrolysis of 1.8L of water over 5000 miles can enhance the torque and power of a large desiel motor aka truck engine. This does not make sense to me since the electrolysis of 1.8L of water does not add to much...

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