Webra 40 Silverline A 'Quick' Look Inside

[@bobgreen3116]

What a cool looking engine. Great find David.

[@richarddarlington1139]

A brand new Webra? That's a real find.
The C/L guys would love to get their hands on that motor!

[@dmrcflyr2]

I sold it. I did not see using this engine, so it is in different hands now.

[@richarddarlington1139]

Ah. Well, easy come, easy go.

[@nifferwest2069]

David, you will have to heat the cylinder to remove the liner. it is in there real tight. As I said on RCgroups, mine had a real tight fitting rod upper end on the piston. you may find the same.

[@dmrcflyr2]

I have no intention of further disassembly of this engine.

[@rscarawa]

Ok, I see that it does have the hole in the skirt. I am not sure if this has an official name. I have heard cross scavenging (as you said) and I have heard it called loop scavenging. Not sure if there is a difference between the two terms. The K&B uses this method on some of their engines too.

[@rscarawa]

I skipped through the video some. Nice motor. I would like to know if the piston skirt has the holes in it (along with the sleeve) have holes in them for increased scavenging.

[@dmrcflyr2]

You can see pictures of this engine here as I am not opening this engine again.
sceptreflight.net/Model%20Engine%20Tests/Webra%2040%20RC.html
sceptreflight.net/Model%20Engine%20Tests/Webra%2040%20RC%20(2).html

[@rscarawa]

I like that website. They even give timing numbers for comparison. Very nice.

[@jeffie8696]

Fuel with lots of oil and not much nitro, and an idle bar plug helps