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HelicopterVario Sky Fox - Benzin - Evolution - Xtreme › Vario Steel Gear 36/43 for 36/42 freewheel hub
12-04-2011 04:23 AM  5 years agoPost 1
Turbinator

rrApprentice

Nanticoke, PA

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After having 3 gear failures resulting in beating up my 222 fuse beyond feasable rebuild and in an effort to increase the reliability of the skyfox mechs for the new fuse I am working on a batch of steel gears to replace the 36/43 plastic gear. I will be making up 4 or 5 of these things in the first batch, should be done in a few weeks. They will be made of 4140 prehard steel and be a bit longer to match full engagement of the stock pinion gear, be a bolt in upgrade for any skyfox type mechs or apps using this gear. Any one interested in aquiring one PM me for details. They will bolt onto the Vario 36/42 free wheel hub and should last forever and next to eliminate this failure point. I can't put a 100 hours or more into building a new fuse and comfortably fly it as an everyday flier even at a reduced weight after having so many bad experieinces with this area of the mechs. Even inquire if interested, the more wanted the cheaper they can become, ie make the first batch bigger.

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01-11-2012 02:44 AM  5 years agoPost 2
Turbinator

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Nanticoke, PA

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GEAR READY!!

Their done, PM for details

Fit GREAT!! Full gear engagement, no more plastic gear failure!!!!!

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01-11-2012 07:30 PM  5 years agoPost 3
Mojave

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Palos Verdes, Ca. USA

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Very cool! Let me know how the flight test goes. Are you planning to use Lithium grease as a lubricant?
Barry

All helis and planes have an expiration date stamped on them...you only find it after you crash!!

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01-11-2012 11:07 PM  5 years agoPost 4
Turbinator

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Nanticoke, PA

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Barry,

Planning on coating with midas touch oil first from bocca brg then a very sticky lithium complex grease with high pressure additives made by lubrication engineers, the stuff does not sling off. I'm hoping to maybe test fly in a few weeks or less, depending on getting some time to put it all back together, free time not on my side any more

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01-13-2012 11:34 PM  5 years agoPost 5
Mojave

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Palos Verdes, Ca. USA

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Understood, my job is crazy too. Looking forward to seeing the break in results and the compatibility of the 2 gears.
Barry

All helis and planes have an expiration date stamped on them...you only find it after you crash!!

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01-15-2012 12:34 AM  5 years agoPost 6
Turbinator

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Nanticoke, PA

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I machined the OD down on these gears and got weight down to 3.3 oz, about 94 grams. Check out this post on scale helies for more details and more pictures

http://www.scalerchelis.com/phpBB2/...=13484&start=25

With the free wheel hub the assembly is 3 oz heavier then the weak plastic gear set up. I have mechs all assembled and back in a heavy 18.5 lb fuse and I'll be test flying as soon as my castle HV120 arrives back from castle upgrade, it shipped Thursday so maybe some air time this week. It sounds and feels GREAT so far, even smoother then the plastic gear, I think this is going to be a winner

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01-26-2012 02:40 AM  5 years agoPost 7
Turbinator

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Nanticoke, PA

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Be test flying tomorrow!! Sounds GREAT spooled up minus blades, gear stone cold running under load of bare head just driving tail rotor.

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01-29-2012 01:55 AM  5 years agoPost 8
Turbinator

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Nanticoke, PA

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Finally some decient weather, damn rain last 2 days but I guess better then snow!! Flew the h*ll out of the 222 today, 4 cycles of the batts, over an hour of air time. Many full power climbs and heli still in one piece. Hopefully weather will be the same tomorrow and put another hour on it them pull it apart and see what the gears look like, will post pics and video if I can get the kid to come to the field with me. No signs of any thing funny so far, free play feels the same, no splash of any grit or gunk in the cooling duct, gear od is cool to the touch after spool down. First fly time since fall, I needed that fix!!

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01-29-2012 02:04 AM  5 years agoPost 9
95nostalgia

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US of A

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Lube

When/if you have the need, please check out an o-ring chain lube I found for motorcycles. It's called "PJ" and also has it's own cleaner that you can apply first. I used this first on a custom motrocycle I built which had a large 230 0-ring chain. Conventional chain lubes would've been messy. This stuff goes on clear and wet but the liquid flashes off quickly and leaves what I would describe as a waxy residue that doesn't come off easily. It certainly won't sling off. Maybe there are similar lubes made especially for gears but you may want to invest in a can of this for many other things around the house. Please post updates on your nice work.

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01-29-2012 12:26 PM  5 years agoPost 10
Turbinator

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Nanticoke, PA

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I have some PJ chain lube around,used to dirt bike myself long ago, THANKS for teh tip. I'll see how the grease I used stayed in place, I don't see any of it in the cooling duct so far or all over the top of the gear box. I though for sure it was going to be messy, HAPPY its not So far looks like more flying weather today!!!! Suns out but its only 25 so far

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01-29-2012 05:43 PM  5 years agoPost 11
95nostalgia

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US of A

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Well done

A job well done. I wouldn't expect anything to happen with the gear you made. It's nearly bullet proof. I would watch all the stuff around it though. Those parts are gonna get tested now. One day you'll have the whole thing redone and you can put it on the market. We'll call it the Turbinator II. Let me know what lube worked best. That gear was aluminum? T6? Not at main computer.

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01-29-2012 10:41 PM  5 years agoPost 12
Turbinator

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Nanticoke, PA

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The gear is wire EDM'd from 4140 prehard steel, it is very precisely done and should wear well mated with the steel pinion.

I put some time on it again today, about an hour of total air time, some aggrssive approaches about standing the heli on its tail to stop it with lots of pitch, not as crazy with long, steep climb outs like yesterday as it was real windy today and colder, brrrrrr!! The bird weighs almost 19 lbs with the 2 10s5000ma batteries on board. I have max pitch in flight modes at 12 degrees, hold at 14, pitch range is -2 to 14, hovering at 6-6 1/2 depending on head speed. At 12 degrees pitch and 1500 on the head even at 19 lbs it goes verticle pretty good! I did up the spool time to about 15 seconds, 3 from 0 in the CC programming menu, just to see how that looked, took it down to 2, 0 was just way too long like 50 seconds or so but I had it set that way to be as easy as possible on the plastic gear which in the end was a moot point anyways, too much battery and wait time there for me to, 2 seems good. It actually sounds much soother spooling, hoving, and in flight then when it had the plastic gear. I'll have to put my internal camera in it again for a flight video and compare the sounds of the 2, plastic gear last sumer verse steel now. I'll be pulling it apart some time this week to look at both the internal gear and the pinion to see what they each look like compared to a new one, I'll post pictures of both. Be starting on the new fuse soon, hopefully find the time at least!

Here are some pictures of the gear on a diet plan, it only weighs 3 oz more then the stock plastic equiped set up now. After all the hard landings I had from the stipped plastic one I can do with an extra 3 ozs for the piece of mind it brings knowing this gear is not going to let me down in the new fuse

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01-30-2012 07:45 AM  5 years agoPost 13
95nostalgia

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US of A

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Gotta love it.

Excellant. Love it when a plan comes together. You go. Referenced you in another thread. Hope you don't mind. The basic idea was about quality and the heartbeat of America. Ha.

Now for some side and bottom framework. Surely you can improve on that too with all the right cuts and mounts in all the right places. Should be easy for you after this. Maybe you need to do the tail drive first? Can you tell I am trying to encourage? Save the program. Might want to scale it down for a 600 size. It's a good market niche...600 scale mechanics that are strong.

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02-07-2012 03:35 AM  5 years agoPost 14
Turbinator

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Nanticoke, PA

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The results are in!!

After 2+ hours of VERY hard running here is what is seen. In a nut shell, GREAT, next too unmeasureable wear. Photos show new gear and pinion compared to used gear and pinion using drill bits for gauge pins to measure on wear surfaces of the gears to check for worn away material, unmeasureable, grease and steel gear and pinion working well together. Grease wipped out had absolutley no signs of grit, was not even discolored.

The grease stayed were it should have, I'll be using it in the future and will include a bit of it with future gears. Mechs stayed cleaned, very little grease splattered in the cooling duct or on mechs. I'm VERY happy with it. Now onto putting it all back together and do some flying with out worry of the gear stripping. Fly the beat up fuse until its new home is done and have faith it will not meet the demise of the first one due to a stripped plastic gear.

I should have more of these gears in a few weeks, PM me if interested.

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02-12-2012 10:43 PM  5 years agoPost 15
Mojave

rrElite Veteran

Palos Verdes, Ca. USA

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Looks like you have a winner! Good job PMing you regarding purchasing a couple.
Barry

All helis and planes have an expiration date stamped on them...you only find it after you crash!!

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02-25-2012 09:23 PM  5 years agoPost 16
Turbinator

rrApprentice

Nanticoke, PA

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Barry, 2 sent, lets us know your thoughts on them.

THANKS MUCH

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03-10-2012 12:44 PM  5 years agoPost 17
Mojave

rrElite Veteran

Palos Verdes, Ca. USA

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My wife said the gears arrived safe and sound, but I'm 2500 miles from home on work travel until July, so I have to patiently wait... I'm sure they are super nice.
Barry

All helis and planes have an expiration date stamped on them...you only find it after you crash!!

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03-11-2012 04:31 AM  5 years agoPost 18
Turbinator

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Nanticoke, PA

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Looks warm there!

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04-06-2012 02:54 PM  5 years agoPost 19
Turbinator

rrApprentice

Nanticoke, PA

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MORE GEARS AVAILABLE!!

UPDATE

10+ hours on my gear now, looks and sounds like day one yet, this is the longest this 222 has lived since it has been built, LOVIN IT!!

Upgrading a Kobold frame with one now which is destined for the new 222 fuse, hopefully be 13-14 lbs on this one

Batteries in the original 222 semed to stabilize now and are only about 200-300 mah recharge difference, one always still a bit less then the other but getting 22 minutes of flight on 2 5000 mah packs putting 3700-4100 back into them after 2 about 11 minute runs

I have another batch of gears available, if anyone wants one get while their still avaiable!!

Fenny control upgrades be done soon too!!

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04-22-2012 04:50 PM  5 years agoPost 20
Richard Morgan

rrApprentice

Virginia Beach, Virginia USA

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I just got my second gear. Skyfox owners, this is the ticket!

Richard

Is it just me, I thought all Helicopters flew in 3D......Hmmmm?

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HelicopterVario Sky Fox - Benzin - Evolution - Xtreme › Vario Steel Gear 36/43 for 36/42 freewheel hub
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