The following is a brief overview of the Butterfly X250 330mm Shaft Mini QuadCopter Glassfiber Frame.

Product Name: Butterfly X250 330mm Shaft Mini QuadCopter Glassfiber Frame
Product Page: http://www.goodluckbuy.com/butterfly-x250-330mm-shaft-mini-quadcopter-glassfiber-frame-74g.html
Purchase Price: $26.23USD
Review Date: Feb 18 2012

Weight: 73g
Shaft Distance: 250mm

The frame kit comes complete with the G10 parts and nylon standoffs, screws, nuts, and rubber feet (we were missing 1 screw).  There is no manual so you are on your own to piece the items together, although this is not a major undertaking.  Everything was packed in a zip lock bag and shipped in a padded envelope from Goodluckbuy.

The quality of the G10 and the CNC works is good, no issues with hole alignment or poorly done CNC milling.  Parts were clean and smooth with no scratches or other issues.  The holes for the motor mounting seem to be of no specific motor size, doesn’t appear to be any size used by typical motors or mounts, approx 24mm center to center.

The nylon hardware quality however is not great.  It is very easy to strip a nut or screw, which makes tightening things sufficiently a bit of an issue.  Also the screw head design itself is poor, there is very little material due to how the slot is cut in the head and we ended up having a head pop off even with light pressure to tighten.  The standoffs seem ok but you may want to replace at least the nuts and screws if not all the hardware.

The flight controller mounting holes only seem to support 45mm distance.  Mounting for other controllers will require some drilling.

Weight of the assembled frame came in at 72g which is much in line with the listed weight of 73g.

One odd issue is the packaging and components have a very strong oil smell, to the point of giving one a headache.  Not sure if this was some issue with the packaging used for ours or a more global issue with how they are packaging and storing this kit.  Not a major issue to the frame itself but an annoyance.

Overall for the price and the quality issues it really isn’t a great value.  The design itself is decent, as is the G10, but the hardware leaves a bit to be desired. There are other better made mini frames available for around the same price with better hardware and flight controller mounting options.