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Old Aug 25, 2012, 02:02 AM
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Build Log
VULTURE 3500 E Glider Build Log

Hi,

This my build log for the Vulture 3500 electric from MVM Models. I believe that its a Gen 3 with the Carbon D-Box wing.

It was sourced from Tony Fu at www.sloperacer.co.uk

The model is setup as a value for money 'sports' flier based on recommendations from Tony.

This is my first venture into molded planes and certainly far bigger than I had initially intended. I was chasing an Orion however the UK distributor was closed for the week that I was visiting London.

Anyhow, here goes a great ride or a lot of disappointment, all due to my inadequacies of course!

I have read the several build threads in detail, mostly non E versions, which I thank you. Without these, I would not have purchased the plane. Some of the links are listed below:

http://www.rcgroups.com/forums/showt...ht=vultur+3500
http://www.rcgroups.com/forums/showt...ht=vultur+3500
http://www.rcgroups.com/forums/showthread.php?t=1559999

I had intended to send several emails to Tony.....this thread will hopefully help many more. Finally, please dispense advice liberally, I NEED it.

Thank you
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Last edited by mgbolts; Aug 26, 2012 at 06:12 AM.
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Old Aug 25, 2012, 05:41 AM
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Joined Apr 2012
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Weights

Below is a list of weights in grams (ounces). The list excludes battery, esc or BEC.

Left Wing Tip 226 g (6.4oz)
Right Wing Tip 227 g (6.4oz)
Centre Wing 648 g (18.4oz)
Wing Tip Joiner 1 16g (0.5oz)
Wing Tip Joiner 2 17g (0.5oz)
Left V Tail 32g (0.9oz)
Right V Tail 33g (0.9oz)
Fuse 269g (7.6oz)
Motor 210g (6.0oz)
Servo Covers (Uncut) 9g (0.3oz)
Savox Servos (x4) 64g (1.8oz)
Alturn Servos (x2) 48g (1.4oz)
Wiring harness 66g (1.9oz)
Fu Fix Servo Bearings 6g (0.2oz)
CNC Motor Mount 4g (0.1oz)
Spinner 16g (0.5oz)
Folding Props 19g (0.5oz)
Servo Frame (Fuse) 5g (0.1oz)
Misc 22g (0.6oz)

Total 1937g (54.9oz)

Misc comprises metal clevis (x10), servo push rods, ball links (x2), and wing screws.

Note: the scale is not calibrated.
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Old Aug 26, 2012, 02:17 AM
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Servos

The servos are as follows:

2 x Savox 255MG Digital - Aileron
Torque: 6.0V: 54.1 oz-in (3.90 kg-cm)
Speed: 6.0V: 0.13 sec/60
Weight: 0.56 oz (15.8 g)
Dimensions: Length:0.90 in (22.9 mm)
Width:0.47 in (11.9 mm)
Height:1.16 in (29.5 mm)
Motor Type: Brushed
Gear Type: Metal
Rotation/Support: Single Bearing

2 x Savox 257MG Digital - Vtail
Torque: 4.8V: 25.0 oz-in (1.80 kg-cm)
6.0V: 30.6 oz-in (2.20 kg-cm)
Speed: 4.8V: 0.13 sec/60
6.0V: 0.09 sec/60
Weight: 0.49 oz (14.0 g)
Dimensions: Length:0.90 in (22.9 mm)
Width:0.47 in (11.9 mm)
Height:1.00 in (25.4 mm)
Motor Type: Brushed
Gear Type: Metal
Rotation/Support: Single Bearing

2 x Alturn ADS-450HTG Digital - Flaps
Torque At 4.8V: 4.7kg/cm , 78oz/in
Speed At 4.8V: 0.12 sec / 60 at no load
Torque At 6.0V: 5.6kg/cm , 92 oz/in
Speed At 6.0V: 0.10 sec / 60 at no load
Motor Type: Coreless motor
Gear Type: Metal
Weight: 22.1g / 0.76oz
Dimensions: 31.5 x 15.5 x 26 mm
Rotation/Support: Single Bearing

The wing mounted servos are to be fitted with an external Fu Fix bearing.
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Last edited by mgbolts; Aug 27, 2012 at 03:38 AM.
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Old Aug 26, 2012, 02:52 AM
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Servo Installation

I plan to fit the servos as per the picture below.

There is no frame, the unsanded servo is merely glued down. The servo will be braced by the Fu Fix bearing glued to both top and bottom skins. In addition, a CF strip (1mm x 8mm x 60mm) laid across the servo and glued to the inside of the bottom skin.

The end result should be a rigid box frame structure surrounding the servo, locking the skins and minimizing flex. The servo arm is also well supported with the external bearing minimizing movement and wear.
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Last edited by mgbolts; Aug 26, 2012 at 10:01 AM.
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Old Aug 26, 2012, 03:24 AM
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Questions - Servo Rod

The servo rod needs to go through the top skin in order to connect to the metal clevis and pre-fitted horn.

How do I determine how much (length) and how deep I should cut the top skin to get the servo rod fitted?

Can I remove some of the timber spar?

Should I mix any micro balloons with the epoxy glue to help lock in the servo and external bearing?
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Old Nov 17, 2012, 09:32 AM
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New E Vulture 3500 with X-tail
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