I really like my Irvine .53. Has great power and transitions really smooth.... Pulls a nice big prop.. Like the APC 12 x 4 and 12.25 x 3.75. Runs on 5%- 15% nitro. I like to run 10% with 20% oil... Runs nice and cool when you torture them all day pointing straight up...

My Webra runs equally as well... Maybe just a tiny bit more power... Just a tiny... Likes the same props... Maybe a little harder to set the needle. Same fuel.

Here's the kicker though....

Webra w/muffler: 15 5/8 oz.
Irvine w/muffler: 18 oz.

A full 2 3/8 oz. lighter.... that's a lot of beans buddy!!


The MVVS .49 is 17 1/2 oz with the stock pipe and header.