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Type: Posts; User: Mr Cox

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  1. Replies
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    Views
    135

    These are great engines and have been thoroughly...

    These are great engines and have been thoroughly discussed in the 1/2A forum, do a search or read here for instance;...
  2. Thread: Cox vs. Norvel

    by Mr Cox
    Replies
    34
    Views
    532

    Yes, that is true, there will be a reduction of...

    Yes, that is true, there will be a reduction of the fuel due to the clever construction with threads to move the barrel in and out. The effect is not large enough though, they have also added a slot...
  3. Thread: Cox vs. Norvel

    by Mr Cox
    Replies
    34
    Views
    532

    On the contrary, they are very different. The...

    On the contrary, they are very different. The most important difference lies in where fuel jet is positioned, On the OS engines (as on most other engines with carburetors) the fuel jet i positioned...
  4. Thread: Cox vs. Norvel

    by Mr Cox
    Replies
    34
    Views
    532

    Well, I not a native english speaker and I could...

    Well, I not a native english speaker and I could get the words wrong by comparing to my native language, but I do believe that there are also technical terms that can deviate from the general meaning...
  5. Thread: Cox vs. Norvel

    by Mr Cox
    Replies
    34
    Views
    532

    I appologize for sounding so negative, and yes we...

    I appologize for sounding so negative, and yes we had this discussion when they first came out. Before that, there have also been several DYI chokes presented on youtube etc.
    There was also a more...
  6. Thread: Cox vs. Norvel

    by Mr Cox
    Replies
    34
    Views
    532

    That's not a throttle, it's a choke. It only...

    That's not a throttle, it's a choke. It only lowers the engine revs by making it run too rich, that's what people used in the 60-ties as an add-on to CL engines. Other engine manufacturers are well...
  7. Thread: Cox vs. Norvel

    by Mr Cox
    Replies
    34
    Views
    532

    Yes, the conquest is in a different league, very...

    Yes, the conquest is in a different league, very "non-cox" in its construction...

    But I've started to like the Queen Bee when running it on diesel, it actually performs quite well and does about...
  8. Replies
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    524

    Wow, that's a really great testreport! I'm...

    Wow, that's a really great testreport!
    I'm really surprised by the results though, maximum power around 10500rpm and no point in going over 12000rpm, that just doesn't sound right for a modern ABC...
  9. Thread: Cox vs. Norvel

    by Mr Cox
    Replies
    34
    Views
    532

    Never heard that before, and I haven't worn out...

    Never heard that before, and I haven't worn out any of my Norvel engines either. Are you talking about the revlite or the earlier ones?

    I would expect the cox sure-starts to be the least long...
  10. Replies
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    524

    What would that accomplish? I assume that the...

    What would that accomplish?

    I assume that the custom single exhaust ones have a schneurle like design to the transfer channels and/or angled transfer ports like the .15 engine?
  11. Thread: Cox vs. Norvel

    by Mr Cox
    Replies
    34
    Views
    532

    There is no real reason to use cox, as I see it,...

    There is no real reason to use cox, as I see it, other than nostalgia and for already having too many of them...
  12. Replies
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    524

    Why don't you just write that it is you who are...

    Why don't you just write that it is you who are selling it, straight away...?
  13. Replies
    27
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    468

    Yes, one could even use an electric contraption...

    Yes, one could even use an electric contraption instead of an engine, but where is the fun in that?

    It is a hobby after all and running the engines is a major part of the fun, as I see it. There...
  14. Replies
    27
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    468

    Just to clarify, I took the front end my engine...

    Just to clarify, I took the front end my engine apart and photographed it upside down in order to help the original poster...

    The engine runs fine, the one issue that I've had is that the carb...
  15. Replies
    27
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    468

    Yes of course a lathe is the best tool, but not...

    Yes of course a lathe is the best tool, but not everyone has the access or the ability to use one. I only have a hobby lathe myself, but it is good enough for making smaller things in soft metal.
    ...
  16. Replies
    27
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    468

    It is quite easy to just make a thin shim from...

    It is quite easy to just make a thin shim from thin brass sheet metal, in order to avoid aluminium rubbing against aluminium. I have one mine for that reason, do a rough cut first then use a dremmel...
  17. Replies
    27
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    468

    As for the starting problems I would check the...

    As for the starting problems I would check the carb retaining bolts, they can easily strip the plastic carb and they you get major airleaks there. Try an 8x4 prop and 5-10% nitro, plus 20-25% all...
  18. Replies
    27
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    468

    Ooops, looks like someone has been grinding away...

    Ooops, looks like someone has been grinding away with an electric starter on it...

    You need to check how much the crankshaft can move back and forth with the backplate on, you can leave the...
  19. Replies
    31
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    3,650

    Here two more pictures I had on my computer of...

    Here two more pictures I had on my computer of the engine installation. In order to not cut in the cowl I made a DIY muffler from thin aluminium tubing and some JB-weld. It holds up just fine, clears...
  20. Replies
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    3,650

    I think an upright engine would destroy the lines...

    I think an upright engine would destroy the lines of the plane and I didn't want to cut through the nice looking cowl.
    The position of the tank is very important with inverted engines, make sure...
  21. Replies
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    633

    Or you just get the Norvel .074 which takes a...

    Or you just get the Norvel .074 which takes a 6.3x4 with ease... ;)
  22. Replies
    38
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    633

    I guess this was meant to be in the Queen Bee...

    I guess this was meant to be in the Queen Bee thread?

    A 6x4 may seem to be about the right load during a bench run, it gives good idle and transition, but mine would overheat easily. That problem...
  23. Replies
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    2,485

    The problem with Davis Diesel heads for cox...

    The problem with Davis Diesel heads for cox engines lies in the construction of the head. In my view the Teflon disk is very a stupid idea as Telfon is not meant for that kind of application and the...
  24. Replies
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    Sounds like it was running too rich on the low...

    Sounds like it was running too rich on the low end...
  25. Do they deliver that high mAh numbers during...

    Do they deliver that high mAh numbers during discharge too, or is it only the amount needed to charge them?

    When batteries age, the delivered "juice" decreases down to very low values. I have some...
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