HobbyKing.com New Products Flash Sale
Reply
Thread Tools
This thread is privately moderated by CaseySP, who may elect to delete unwanted replies.
Old Jul 29, 2012, 08:32 AM
Registered User
CaseySP's Avatar
Canberra Australia
Joined Feb 2007
1,476 Posts
Discussion
Paramount .50/.72 maiden

Successful maiden! Had to wait for the fog to lift but finally got things underway - unfortunately my photographer picked up a stomach bug so in-flight pictures will have to wait.

Needed a couple of clicks of down trim and then it flew straight as a die. Very quick in the roll - will reduce aileron throws by 30% and add a bit more exponential.

Possibly needs more rudder (flying with 100%) - a fair amount of mechanical adjustment is available with the pull-pull system but will wait until I try a bit of proper knife-edge flying.

Also needs both ailerons "reflexed" up a touch as it seemed to be flying with slight down flap. Might also explain the need for down trim?

120g of ballast needed to get it to the rear of the CG range as the motor is quite a bit lighter then the four stroke engine. In-flight CG test seemed spot on with the CG in this position. Thrust angle also seemed spot on as built into the firewall with no trim changes regardless of throttle setting.

Limited flight to 5 mins for 1300mAh used from pack with a fair amount of vertical testing. Should be a comfortable for 8-10mins of mixed flying.

Vertical is great, stall benign (only nodded the nose) and landing was a breeze. Still, it's a big plane and needs a bit of room.

Max power is 670W @ 35.6A. Batteries should be fairly untaxed - under 12C at full power.

RTF weight is 2.5kg. 100g more then the aircraft was with the 4 stroke (empty), but 120g of that is ballast. Max recommended flying weight is 2.6kg, so not a problem.
CaseySP is online now Find More Posts by CaseySP
RCG Plus Member
Last edited by CaseySP; Jul 29, 2012 at 08:41 AM.
Reply With Quote
Sign up now
to remove ads between posts
Reply

Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion Sportsman Aviation Paramount 50/72 ARF CaseySP Glow to Electric Conversions 17 May 04, 2013 09:21 PM
Discussion SebArt 60" Macchi MC-72 maiden flight w/video racin06 Waterplanes 1 Apr 17, 2012 06:27 AM
For Sale Sportsman Aviation Paramount 50" ARF Aerobatic sport plane Eric Zanutto Aircraft - Electric - Airplanes (FS/W) 1 Aug 04, 2007 11:37 AM