stunthanger.com
Engine basics => Engine set up tips => Topic started by: James West on November 27, 2016, 11:50:28 AM
-
Has anyone used a Webra Silver line .40 in U/C?
-
I have two of them new and blue printed but, haven't flown them on anything. My take is they make less power than a Brodak 40 and they are heavier so maybe a good sport engine. That being said they are high quality manufactured with hardened sleeves.
MM
-
I bought one after I read the review on Sceptre flight site. It has beautiful machining with quality metalurgy. I just need to put a venturi on it with an ST spraybar.
-
I think they came up periodically in old World Champs Reports , etc .
Think 11 x 6 was ' the go ' . Probably Ideal for something like a T Bird II .
A lot of them wouldve been ' Pre muffler ' days . VD~ S?P
-
Webra has a parts list for the .40 (and others):
http://www.webraengines.com/parts/
I guess email for info.
-
Its good to see parts available. The muffler bolt spacing is exactly the same as the OS LA 40. ;D
-
The piston has an anti rotation pin. The ring climbs up the pin and it wears out the ends of the ring real quick. I don't remember if I removed the pin or just drove it in all the way but it's unnecessary and needs to be gone.
I did a test. My Brodak 40, factory muffler (with .360 restrictor insert) turned 12,800 and is 240 Grams. The Webra turned an 11-4 at 12,400 rpm and is 330 grams with muffler (factory muffler is very light). So, a bit less power and 3+ oz. heavier.
MM
-
I setup several years ago, not impressed they are heavy and don't run well in anything but a wet 2 cycle, if wanting for stunt, there are better choices
Randy