90cc curiosity

[TikiMan]

So Ive been playing with this 90cc kit and a 28mm OKO carb. I was wondering what is a safe rpm to rev up to? On a nice day itll hit 10k and stay around 270 degrees on my gauge. How much heat transfer does the spark plug sensor not read?

[JJ Joseph]

So Ive been playing with this 90cc kit and a 28mm OKO carb. I was wondering what is a safe rpm to rev up to? On a nice day itll hit 10k and stay around 270 degrees on my gauge.

I can't say for sure since there's so many other variables (like where the sensor is attached), but if I ran mine at 10,000rpm & 270F for an hour, I'm sure it would eventually incinerate itself since the temp tends to keep sliding upward.

PS: try to post just once since double-posting wastes everybody's time