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  • Users: topcatproduction
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  1. topcatproduction

    Engine Dyno Practise

    Thanks.
  2. topcatproduction

    Engine Dyno Practise

    Does it work well with smaller and bigger engines? I wasn't sure how well a little engine would work on the same dyno as a big V8!
  3. topcatproduction

    Engine Dyno Practise

    Thanks, unfortunately the bigger one is not a Telma, the only lettering appears to be IC or KC, but not seen it myself yet. The smaller one is a Telma, CE30 12v which would appear to be much smaller, so you are actually running one in an engine dyno?
  4. topcatproduction

    Engine Dyno Practise

    Hey all, I have found a choice of 2 telma/eddy brakes, one is about 11" diameter, 12v and from a 7.5t lorry, the other is bigger at about 15" diameter, 24v and from an 18t fire engine, I cant find ANY information from the serial numbers etc, but could anyone hazard a guess as to what sort of KW...
  5. topcatproduction

    Rolling Threads

    Another great link thankyou ;-)
  6. topcatproduction

    Heat Treatment Standards

    Thanks- very helpful link for me. Is the only difference between the different grades the temperature at which it is tempered? Also would they be tempered in air or an inert gas?
  7. topcatproduction

    Heat Treatment Standards

    Hi, I am looking at having some custom studs made from EN24 and have been advised by someone who is very well respected in this area to have them heat treated to "V" standard. Can somone please explain to me how that standard is defined and where it fits in on the scale and amongst other...
  8. topcatproduction

    Rolling Threads

    Also where can I find data on what diameters to turn bar down to before rolling threads? They will be 7/16 UNC and UNF, 14tpi and 20tpi respectively.
  9. topcatproduction

    Rolling Threads

    I'm considering buying a cnc turret lathe, not just for these as I do a fair bit of lathe work and would be handy and increase production. This way I should be able to turn the bars down and roll the first thread with a thread rolling head, then will it be a case of modifying some chuck jaws so...
  10. topcatproduction

    Rolling Threads

    Thanks for the replies, I have had a price for making up a quantity, but it was too expensive when compared to other available products that would do the job. Just had a look at the kinefac website and it is most impressive! What would the likelihood be of finding a used machine for rolling...
  11. topcatproduction

    Rolling Threads

    Hi there. I hope this is in the right section, whilst having been involved in engineering since school (I am now 25) I was never majorly involved in precision engineering, hence the questions. I am looking to make some 7/16 studs from EN24, they are different lengths but roughly between 3" and...
  12. topcatproduction

    Engine Dyno Practise

    I would like the flywheel idea- but testing engines up to about 400bhp it would need to be so big it would be dangerous! The Rover V8 I last built and is in my current car is 370bhp and I want more... Will look for water brakes
  13. topcatproduction

    Engine Dyno Practise

    Having spoken to a lorry mechanic he says he can't remember the last time he saw an eddy brake on a truck- they use other types built into the engine now for endurance braking. So I may look for a water brake- but I have no experience of them- how do you control the load and is cavitation ever...
  14. topcatproduction

    Engine Dyno Practise

    Yep sorry got you! So really it is ideal- apart from having to mount a torque converter on every engine I test... I was wondering if I could use a big generator of some kind and ditch the power somewhere would that work the same- just measure the reaction of the genny? Maybe ditch it into a...
  15. topcatproduction

    4-53 diesel runaway

    Is this a 2 stroke blown diesel? I think it is unlikely that at least 3 injectors have all packed up at the same time (they wont be electronic anyway will they?), these problems are usually simpler than they seem, I would think it much more likely that one component failed than a whole load at...
  16. topcatproduction

    Engine Dyno Practise

    How can you measure power before the coupling- when the coupling is there to provide the mechanism for measuring power?
  17. topcatproduction

    Engine Dyno Practise

    The downsides I can see with that is that it will not be easy adapting different engines to the auto box used, and to be safe it would have to be a reasonably sized one- which guzzle power. A good friends plymouth was rolling road'ed a couple of weeks back and his transmission ate over 80bhp...
  18. topcatproduction

    Engine Dyno Practise

    Well a simple dyno as discussed should be able to give accurate WOT maximum torque readings which would be helpful, and I guess with further testing and modifications to its operation it may be the case where it becomes possible to get accurate incremental readings too. With any luck! I could...
  19. topcatproduction

    Engine Dyno Practise

    Well even if I can only get a WOT reading at say 1000rpm increments then it will be good enough to be handy, so I will start hunting for an eddy brake! I'm a bit put off by water brakes as I can't see cavitation not causing problems.
  20. topcatproduction

    Engine Dyno Practise

    Thats exactly what I was thinking- big strong frame with scales mounted well and eddy brake, but I may not have actually stated that since my original post... Still not sure how you would know how much load to put on the brake (eddy/water etc) as it must be adjustable, and too much wouldn't let...

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