kiwi_craig's blog View Details
Archive for September, 2014
Posted by kiwi_craig | Sep 28, 2014 @ 04:13 AM | 7,017 Views
Had a fantastic flight session with the v915, flew brillantly. Conditions where far from perrfect with strong wind gusts up to 10 to 15 mph. Strong enough that my modded v912 was in the deck repeatedly. Ive fitted a set of Nine Eagles 228 mixers, these work fantastically when combined with the stock flybar weight (with ends tweaked up for clearance). Heli responds nicely and remains composed even in head winds able to blow it backwards it remained level and in control, normally with a WL thats instant crash territory...... When the gusts dropped it flew stunningly well

Fitment; have to trim off the original mixer arm pivot pins, drill a very small hole right through the blade grip so the mounting screw threads through nicely. I drilled the brass bush from 1.5 mm to 1.65mm to suit the screws i had to hand. Dab of epoxy on the screws to make sure they dont lossen .

The mixer arm is adjustable with three different ratios i found the stock 228 setting in the middle hole works nicely. The NE mixers reduces the flybar inputs into the blade grip allowing better servo response and a significant improvement to the overall flight envelope and smoothness best this bird has ever flown by miles.

Superb improvement to the overall flight characteristics. Going to change the 912 over, the difference is an eye opener ! Normally my 912 will handle a decent head wind where as the 915 was pretty hopeless....... Total reversal in very trying conditions........

Reliable vendor on eBay, from china, around $5 delivered. Best $5 investment you can make on this bird.

Next project for the 915 is the Fx 78 drive shaft with FX 071 flybarless rotor head and FX 071 flybarless PCB. Drive line nearly done just got to fab an offset swash pivot guide. PCB is easy. Not so keen on the el cheapo Fx tx units after running a 9x though......
Posted by kiwi_craig | Sep 25, 2014 @ 04:13 PM | 13,631 Views
WL have come out with what looks like a Mobius clone (or maybe a Mobius contracted design) for a new 720/1080 cam for their V262/353 etc quads.

This is uses the same clip mounts as on the V912 camera heli version and looks like the same connection control wiring so it runs off the WL remotes with the camera / video functions.

Front lens pivots which is a good feature. 720 / 1080 P; if the video quality is as good as a mobius then this is a good buy !

The WL anti jello mount, at $4 seems like a good buy as well

the camera clips onto the V262 etc battery mount which fits into the anti vibe mount above

this same anti vibe mount is appearing on the new V666, in black, with WL's FPV system attached

thumbs up to WL for bringing usable accessory products to the market at a sharp price
Posted by kiwi_craig | Sep 16, 2014 @ 04:35 AM | 9,424 Views
Finally got the MJX brushless esc sorted and wired onto the 912 pcb. Responds to gyro just fine on the bench test it seems

Trying to figure what props are best suited so setup the scales with stock tail then the MJX brushless using the 1804 brushless motor and a variety of props. The MJX kit prop is Huge.....

Stock prop brushed motor. Around 81 grams thrust

Brushless with FX 071 prop. 86 - 90 grams. Motor screams

Brushless with 912 prop. 106 grams. Lots of RPM

Brushless with 913 prop. 119 grams , still revving hard big thrust numbers

Brushless with MJX brushless prop stonks out 124 grams but rpm is pegged back

Other observations MJX prop tends to surge allot hard to get a nice steady rpm. 913 prop very smooth in comparision. MJX brushless kit prop is probably miles to much thrust. 071 or the 912 props would seem to be a more realistic starting point and the 913 really belts out smooth grunt. MJX prop very surge prone and noticably more load on the motor.

1804 motor has a low 1800 kv rating where as most 1804 units for quad use are in the 2400 kv range, suspect anything over 2000 kv is going to be a hand full

MJX kit motor has a hex drive and allow the use of a wide range of stock props is a good feature imo.

Time to get all this stuff loaded into the 912 chassis.
Posted by kiwi_craig | Sep 03, 2014 @ 08:38 AM | 6,463 Views
Got a bit of a fleet of WL quads, V959, flies great hard to fault but to big to really fly indoors. V262, the 6 axis setup was an eye opener, super easy to fly, but chews through the motors, but is a great platform to carry the mobius for bugger all dollars, outdoors only with that one !

Enter the 252, this is the upgraded version from what i can tell, the lower body is translucent plastic and very flexible (first version had clear plastic that was reportedly very brittle).

This is stunning, great indoor flier and rips outside. This is a bundle of fun all round.

The remote has a 20% setting ,making it fun for the kids to get a handle on it. The prop protectors are a must for indoors. Several different types, the purple one was very light and broke easy, got to pull the props to change. gone to the clip on style, they push on around the motors, got a three pack including the glow in the dark version. Way more durable.

Bought it from TMart, got the 5 pack of up rated batteries, they are a tight fit but work great.

Does pick up carpet thread on the prop shafts after numerous crashes and bangs; it starts drifting off in one direction pop the blades and clean the shafts, the build up of carpet thread creates drag that slows a motor and it starts drifting off from a stable hover.

This is a bundle of fun and a total blast to fly. Super agile, 100% rate inside is insane, auto flips inside with ease on the flip button. FUN FUN FUN. Thats what it is all about right.

Totally recommend this unit.