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  • Users: BobSP
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  1. BobSP

    How to calculate valve spring requirements?

    Hello everyone, I'd like some help to determine how strong the valve springs need to be for a given application. I know the easy way is just to look at manufactures recommendations for the camshafts, but if i want to actually know how much i need, how would i do that? If i know the mass of...
  2. BobSP

    Transmission power rating

    I'd like to know more about gearbox power rating... How much power can a gearbox handle? What are the causes of failure? If a gearbox can take 100hp, then does that mean that: a) it can take half the torque at twice the RPM? b) it can take twice the torque at half the RPM? in other words, is...
  3. BobSP

    Aluminum block thermal expansion

    Hello everyone, i'm trying to figure out if there are any problems with thermal expansion of an aluminum block regarding the crankshaft. As the block heats and expands, the main bearings should move (stretch) more than the journals, putting some lateral pressure. Is that correct? Is there any...

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