Velos Rotors 880 Rebuild

D.O.G.

Goblin 380 Supporter
Amazing job Heliman :yahoo:I hope the rest of the build goes smoothly for you. That's going to be one badass Heli :cool1:
 

Heliman450

Well-Known Member
The job list looks like this:

- Replace the chassis rails and increase the width from 102mm to 103.5mm and trim to the finished length
- Cut a locating slot in the tail boom
- Fit the tail boom with its servo, tension the tail rotor drive belt, shorten and fit the push rod
- Clean all screw fittings and apply thread seal
- Replace the connection to the 2S battery, finalise the power supply cables to the ESC's and solder new connections to/from them
- Power-up the gyro and run through the setup (probably not much to change)
- Check the DoR for the motors and colour code appropriately
- Calibrate the throttle to the ESC's
- Carry out test flight
- Begin the 'beautification' process - replace temporary battery trays and ESC mounting plates - canopy repair or replacement
- Longer term project to replace landing gear with retractable wheels
 

Heliman450

Well-Known Member
Hi all, latest update is that the maiden flight has taken place and was successful in so much as my Phoenix v1.4 took to the air and was looking good. However, the tension on the tail rotor drive belt began to loosen. My resulting landing was a bit too hard and the landing gear failed its hard landing test :banghead: shearing cleanly at the front cross-piece.

Good news is that only the landing gear is useless and I've ordered a new set from a scale Bell 47GIII weighing in at 13.5kg against a current RTF weight of 9.7Kg so there should be a bit of insurance there. The biggest challenge will be mating it to the chassis as I'm sure it will be significantly bigger as I was unable to obtain dimensions. I'm sure that it will look a bit odd due to its form as shown if you follow the link below:


Delivery time is 1-2 weeks.
 

D.O.G.

Goblin 380 Supporter
Sorry to hear that Heliman. As for the new landing skids looking odd... looks are deceiving :wiggle: As long as it works :).
 

Heliman450

Well-Known Member
Hi D.O.G., beauty is in the eye of the beholder as the saying goes. I only mean 'odd' it in the context that the landing gear is from a helicopter with a goldfish bowl up front and it will be mated to quite a narrow body (102.5mm at its widest). The upper frame is 66.4mm wide, hence, my feeling.

The only dimension I have is that the cross-pieces are from 15mm diameter aluminium tubing so strength shouldn't be a problem.
 

Tony

Staff member
No good that the landing gear could not withstand a hard landing. Thankfully nothing else was hurt though. Hope you get it back in the air soon!
 

Heliman450

Well-Known Member
Hi all, the new landing gear has arrived much quicker than I thought :banana: it looked huge! It's now undergoing a size reduction operation and will be more in proportion to the body and still much stronger than the previous version. Now just a bit of tidying up before receiving the latest update.
 
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