RCU Forums - View Single Post - New OXAI CITRIN by Wolfgang and Roland Matt
Old 06-04-2012, 10:20 AM
  #44  
cartercg
 
Join Date: Jan 2009
Location: Johannesburg, SOUTH AFRICA
Posts: 122
Likes: 0
Received 0 Likes on 0 Posts
Default RE: New OXAI CITRIN by Wolfgang and Roland Matt

Ok, here are some more pics from the build....

The big scoop at the bottom of the motor should get plenty of airflow onto the Advance.

The battery tray is made of 3mm balsa laminated on both sides with carbon cloth.

The battery tray was installed halfway up in the fuse, similar to the pics on the Oxai website. The Spin99 speed controller is attached to the side of the fuze with velcro. Rx battery attaches with velcro to the landing gear plate. An Emcotech regulator/switch is installed but not visible. It is the 5.9/7.2V spec. I note that Wolfgang runs his normal futaba servos at 7.2V. I'll have the option but have not yet decided if I will run at 7.2V. With a flip of the micro switch on the Emcotech I will be able to see if there is much of a difference in servo speed and torque.

Rudder servo is Futaba BLS451. I did a fair amount of trimming of the supplied rudder servo monting braces and must have saved at least 5g.

The Futaba R6208SB Rx is 8 channels and all 8 are used. The battery is pluged into the Rx S-Bus port. Rx is attached to fuze with velcro. The aileron extension leads seem a bit too heavy duty and I may change them out later for lighter ones and same a few more grams.

Weights at present ready to fly is:

Fuze 2573g
Top wing 636g
Bottom wing 656g
Wing attachments 46g
Total without main flight pack 3911g
Hyperion 4600 25C 1134g
Total with main pack 5046g

I have a Meslijk 21/13 extra light prop on the way, and it will save another 40g, bringing the total weight to 5000g, which is fine. There are a few other small opportunities for further weight savings. The rudder servo used is 15g heavier than the one recommended by Wolfgang.

So I'll make weight without too much of a problem. But it comes at a cost as everthing has to be the lightest etc.

I was hoping to maiden her this afternoon, but the last few items took longer than expected and I was not going to rush things. So tomorrow morning I hope to be airborn and will revert back on my first impressions.

Regards
Clint
Attached Thumbnails Click image for larger version

Name:	Ec89105.jpg
Views:	202
Size:	27.3 KB
ID:	1769031   Click image for larger version

Name:	Yu63683.jpg
Views:	197
Size:	24.6 KB
ID:	1769032   Click image for larger version

Name:	Lq36292.jpg
Views:	223
Size:	27.6 KB
ID:	1769033   Click image for larger version

Name:	Wp40392.jpg
Views:	259
Size:	31.0 KB
ID:	1769034   Click image for larger version

Name:	Kw18406.jpg
Views:	206
Size:	25.5 KB
ID:	1769035   Click image for larger version

Name:	Ul80504.jpg
Views:	214
Size:	29.3 KB
ID:	1769036