Engine shroud

[steve1297]

As the weather cools off, I think that I'm considering removing the shroud. There are very few stoplights in my routes. As long as you keep moving, I am wondering if the winter air will cool the engine better with no shroud.
I'm open to ideas before doing so. I'd like to see Brent do a comparison with his CHT Guage.

Thoughts?

[jbjhillbilly]

This is not a good idea. The shroud uses the air from the fan. There isn’t enough airflow around the engine because of the body panels.

[Zino]

dont do it
the shroud is there to direct the air flow around the fins .
these fins are not large enough surface area wise to work without a shroud .

[steve1297]

Oct 18, 2021 21:01:43 GMT -5 jbjhillbilly said:

This is not a good idea. The shroud uses the air from the fan. There isn’t enough airflow around the engine because of the body panels.

I forgot to add. My scoot is a Ruckus clone. It has no body panels. Even area in front of the valve cover is open.
The engine is wide open, in open air.
But I'm leaning towards not doing it. I appreciate the thoughts. I might get a CHT sensor and try it on short runs.

[GrumpyUnk]

Well, where do you live? If you remove the shroud, likely you will cook the cylinder, piston and rings. Then I will come buy it from you for $55. That's about what I paid for a 2019 Taotao ATM50 with less than 600 miles.
I realize it is more shrouded than a Ruckus, but you do not have directed airflow over the cylinder/head so it will just get 'whatever happens'. Not good enough nor reliable enough to insure reasonable temperatures.
FWIW, I cleaned up the valves, flattened the cylinder head, installed new piston/rings/cylinder, and put it back together. I used a 47mm BBK and it ran very well. It got sold and I have more money for hobby...addiction? I also purchased a complete shroud kit, as there was only a blower cover left, and I wanted it to last.
That was a real nice machine and it ran well, and the CVT worked perfectly.
tom