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  1. F-Type

    HPI Savage XL octane compression issue

    I guess you don't have a compression tester? ;) So, try this. Remove the spark plug, put around 10 drops of oil in the cylinder, cover the spark plug hole with your thumb and pull the starter. How much compression do you feel?
  2. F-Type

    HPI Savage XL octane compression issue

    But the engine won't start? Are you aware of the need to break in the engine?
  3. F-Type

    HPI Savage XL octane compression issue

    Does the piston move when you pull the starter?
  4. F-Type

    Another lemon fixed, I think

    Hi Kurt Thanks for that info! I have been looking over those things. New gaskets and no leaks at those two spots I'm pretty sure. When removing the carb the gaskets are all clean and dry. I did replace the teflon tape with a new o-ring to make a proper seal. However, there is one more...
  5. F-Type

    Another lemon fixed, I think

    Fuel still keeps building up in the crank case, and this is clearly what is causing the start stall issue. So, question is what is causing fuel to build up in the crank case!?
  6. F-Type

    What's a normal idle RPM for the octane?

    I guess what you are trying to say, is that you don't know the answer to my question? ;)
  7. F-Type

    What's a normal idle RPM for the octane?

    What's a normal idle RPM for the octane? I am asking for a number :)
  8. F-Type

    Another lemon fixed, I think

    When considering and checking up on the fuel build up in the crank case, I figured what could be the cause, and also noticed the o-ring that seals the back cover slid in a bit too easy and the cover seemed to bottom out without applying pressure, indicating the o-ring doesn't seal properly...
  9. F-Type

    Another lemon fixed, I think

    Yihaaaaa! Seems I found a new issue that made all the difference. Will be back later to tell you more ?
  10. F-Type

    Another lemon fixed, I think

    Well, not quite ... but read on Today started the engine up again. It ran for maybe 10 seconds, and died. Started again, 5 seconds, tried a few more times and realized we're back at the start and stall issue. Something is fishy. Why would it get into the start stall problem from not being used...
  11. F-Type

    Another lemon fixed, I think

    Got my hands on an octane today that's been on the shelf for a few years. It worked until it was broken in, did two or three wheelies and then caught the start and stall disease, also known as Octane-16 disease. ? Eventually it was given up on and left on the shelf. Everything with the engine...
  12. F-Type

    OS GT15HZ Piston Ring, Piston Liner and Pin Retainer fits on my GT15C!

    Yes you can if sleeve and piston are ok. Scuff the sleeve a bit and break the engine in as if new.
  13. F-Type

    cdi

    Well, like I said, it was an MVVS ICU-L CDI that I tested. I used a simple CMOS inverter IC to invert the signal. You'll need to know a bit about electronics to fix it on your own ;) or ask someone for help.
  14. F-Type

    Got the lemon running

    Haha, that was my first question, do you run anything? ? Have you ran the octanes anything? They run fine?
  15. F-Type

    Octane Stock battery charger

    Yup, any NiMH charger with correct voltage should work.
  16. F-Type

    Savage Octane problems

    Did you ever get it sorted?
  17. F-Type

    LiPo- and other battery mods for octane

    You don't need a voltage regulator, but you should get a battery monitor that cuts the circuit when the voltage gets to low, to protect the battery. Also make sure all parts work with LiPo voltage. The stock CDI will work fine and the radio to as far as I can recall. It's the servos that might...
  18. F-Type

    Here we go again, new thoughts

    Read up a bit about sleeves and cylinders today, and about materials and temperature expansions. When I heat the cylinder up just a bit with a hair dryer, the sleeve can easily be removed. This indicates that at room temperature, the sleeve outer diameter is probably very close to the cylinder...
  19. F-Type

    Here we go again, new thoughts

    One thought that just struck me, if there is no or little crankcase compression, then there might be less gas/air-mixture when the compression cycle begins, i.e. a lower starting pressure, ending up with a lower compression.
  20. F-Type

    Here we go again, new thoughts

    I have tried adding an extra seal between the cylinder and the head, No difference. Also there is a bit of margin between the head and the cylinder, so it is definitely resting on the sleeve, and all the bolts are tight, and once again, when the aluminum heats up, the joint should become even...
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