RunRyder RC
 2  Topic Subscribe
WATCH
 1 page 421 views
HelicopterCentury Radikal G20-30 N640 Hawk Predator › Hawk: Main Gear and Torque Tube
04-26-2004 10:28 AM  13 years agoPost 1
nheather

rrKey Veteran

Horsham, West Sussex, UK

My Posts: All  Forum  Topic

I have a question about the Main Gear > Tail Rotor design on the Hawk.

This weekend I experienced another very minor mishap. The grass at 'the field' is quite long - up to knee height in places.

There is a mown square about 10yds x 10yds, and as a beginner I was practicing tail-in flying around a square marked out with cones.

On one of the reversing legs the tail touched the long grass at the edge, I immediatley landed smoothly and shut the engine down.

I did not hit the ground, the main rotors main no contact, the landing was soft. The only contact was with the tail blades in the long grass.

I expected to find no damage, but on inspection found that several teeth had been stripped off the main gear.

Now this is a pretty minor fix (about 19 dollars including the postage), but the effort and the downtime is a little annoying.

I was wondering just how common this is, because the main gear is not included in the crash kit, but I have had to replace it on each of my minor mishaps.

Out of interest, I assume that this would not happen on a belt-driven tail.

Also, would adding a torque tube make any difference - I assume not, unless it includes some sort of viscous coupling.

No big deal - just frustrated.

Cheers,

Nigel

PM  EMAIL  GALLERY  Attn:RR  Quote
04-26-2004 10:47 AM  13 years agoPost 2
Al Magaloff

rrMaster

12,199 Posts- Enough Time Wasted. See Ya!

My Posts: All  Forum  Topic

Nigel, very common indeed. I prefer a belt drive tail for beginners, as it's the most durable. Just replace your gears and fly. These gears are something to keep in stock as spares. Torque tubes are not recommended for beginners either. Keep at it!.
.

PM  EMAIL  Attn:RR  Quote
04-26-2004 12:48 PM  13 years agoPost 3
SteveH

rrProfessor

Texas

My Posts: All  Forum  Topic

Nigel,

I agree with Al, replace the gear and fly on. Yes, there are drive systems that may survive some encounters better than others, but the fact of the matter is, there is no drive system on any heli that is designed to operate in any thing but air, and any other substance getting into the system may damage it.

The government cannot give you anything without first taking it from someone else.

PM  EMAIL  GALLERY  Attn:RR  Quote
04-26-2004 12:58 PM  13 years agoPost 4
nheather

rrKey Veteran

Horsham, West Sussex, UK

My Posts: All  Forum  Topic

Cheers, as I suspected, I've just ordered a couple.

I was just curious as to whether I was doing anything wrong, because it appears to a common crash victim but is not included in the crash kit.

I've had three minor incidents now - causuality list is as follows:

main gear -- 3
feathering spindle -- 1

Cheers,

Nigel

PM  EMAIL  GALLERY  Attn:RR  Quote
04-26-2004 01:08 PM  13 years agoPost 5
SteveH

rrProfessor

Texas

My Posts: All  Forum  Topic

Nigel,

It hasn't been a problem in the past, but seems some other folks where complaining about gear damage. Maybe the composition of the gears has changed, and I'll check on that.

Before, the gears in the tail rotor seemed rather fragile, and would strip very easily.

The government cannot give you anything without first taking it from someone else.

PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 1 page 421 views
HelicopterCentury Radikal G20-30 N640 Hawk Predator › Hawk: Main Gear and Torque Tube
 Print TOPIC  Make Suggestion 

 2  Topic Subscribe

Monday, December 11 - 10:59 pm - Copyright © 2000-2017 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online