ringed?
#2
idk. thats a really good question ad rebould would be easier and no more abc engines idk. maybe those are 4 stroke engines??
#4
Tech Master
iTrader: (10)
the nitro engines we run,run off the compression the sleeve and piston make..........I believe the rings in a 4 stroke make the compression,and there is no piston to sleeve pinch........Even if we did use rings in these engines they probably wouldn`t stay where they were suppost to when the engine is turning at 35,000 rpms......4 stroke engines don`t turn half that number in rpm....
#8
#10
Tech Fanatic
iTrader: (93)
The nitro engines in helicopters use a ring, they are not 4 stroke. Here's an example: http://www.amainhobbies.com/product_...oducts_id/9471
I agree with rossoh, the ring would not stand up to the rpm that our car engines are operating at. The specs for the engine in the link I attached state it's practical rpm range between 2,000-20,000. We all know that the car engines are operating at considerably higher rpm.
I agree with rossoh, the ring would not stand up to the rpm that our car engines are operating at. The specs for the engine in the link I attached state it's practical rpm range between 2,000-20,000. We all know that the car engines are operating at considerably higher rpm.
#11
I've been flying heli's for 15 years and yes, ringed engines can't hold up to the rpm. We stay around 15,000 rpm the entire flight (loaded and unloaded) and when the ring is warn out, it's $20.00, and you got a new engine. But I will admit, I love hearing 33,000 rpm in my buggys.
#13
Yes, the rings won't hold up to the high rpm that our engines turn. This is compounded by the problem of size as well. You will notice if you look around that the smallest ringed engines you'll find are usually .90 and larger. There are a few in the .60 range that are ringed but are usually not the most potent performers. As the piston gets smaller the ring must also be made smaller, and this further reduces its durability.
#14
Many airplane motors use rings. Most are four stroke but some two strokes are ringed too.
One of the many problems with rings in car motors are the enormous intake and exhaust ports. Designing ports that big that wouldn't snag the rings (and destroy the motor) would be almost impossible. Ringless is a much better option for our application.
One of the many problems with rings in car motors are the enormous intake and exhaust ports. Designing ports that big that wouldn't snag the rings (and destroy the motor) would be almost impossible. Ringless is a much better option for our application.