After 7 builds and 9 engines, I've come to a couple of conclusions.
1. Some of these engines are beasts and run flat out for years.
2. Some of these engines die after a few months.
3. Proper breaking in of the engine is not just a good idea, but necessary.
4. When an engine starts to die, nothing seems to help. The vibrations get worse and the top speed drops.
5. After all of this I'm still not sure we know what we're doing.
6. Running flat out down hill will get you amazing speeds but seems to damage these engines. I had two die under me while going downhill, there was a shudder and a slight pop. After that the top speed was 3-4 mph lower and the vibration at speed was terrible and I had to wear gloves and hold my hands replaxed.
Why? I know it has high RPM but no load it's falling down the slope. The bearing surfaces shouldn't be hotter that normal. The throttle is lower so maybe there isn't enough oil?
1. Some of these engines are beasts and run flat out for years.
2. Some of these engines die after a few months.
3. Proper breaking in of the engine is not just a good idea, but necessary.
4. When an engine starts to die, nothing seems to help. The vibrations get worse and the top speed drops.
5. After all of this I'm still not sure we know what we're doing.
6. Running flat out down hill will get you amazing speeds but seems to damage these engines. I had two die under me while going downhill, there was a shudder and a slight pop. After that the top speed was 3-4 mph lower and the vibration at speed was terrible and I had to wear gloves and hold my hands replaxed.
Why? I know it has high RPM but no load it's falling down the slope. The bearing surfaces shouldn't be hotter that normal. The throttle is lower so maybe there isn't enough oil?
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OK lol about 15000. who's counting