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HomeAircraftHelicopterAlignOther › Trex 700 Main gears stripping are commonplace..Please sort this out Align
04-05-2009 01:48 AM  9 years agoPost 61
johnsalary

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MI

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To copy payne1967 advices My error - I should say anybody can follow your tuning What about Danish helifly ? Wasn't it his idea?

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04-05-2009 04:46 PM  9 years agoPost 62
payne1967

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uk

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i wasn't to dumb to work out how to do the mod and then once somebody has told me how to do it you then try and sell it ha ha
by the way the third bearing block isn't the cure my 700 stripped another main gear today
it didn't last as long as the last one

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04-05-2009 05:25 PM  9 years agoPost 63
raptor50luvver

rrKey Veteran

Dorset UK

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I think this is down to Align to find a definite cure,they designed the model in the first place so should be best placed to figure out the real cause and rectify it.

Hopefully they will get wind of this thread and that certain bodges are not curing it and potentially ruining an otherwise good helicopter.

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04-05-2009 06:44 PM  9 years agoPost 64
lightningrc

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UK

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I seem to have a different problem to every one else , if I push my tail hard into the wind , nose to the right , I some times times get an awfull gear slipping noise.

Theres not alot of evidence on the gears , but im sure the force of the tail is spreading the frames .

I dont think better quality gears will help , as it seems like the frames are flexing .

The extra bearing my be the fix but I would like to see a longer main shaft made , dont like the look of the extension method , but it is a step in the right direction.

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04-05-2009 07:26 PM  9 years agoPost 65
johnsalary

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MI

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ha ha
Happy you did not take it seriously
I'm testing it as well and trying to find the solution not for reason to sell, but in a lavish or enthusiastic manner. Somewhere the reason of problem and solution to cure it is for sure. Now we need to wait till I burn 5 liters of gasoline.

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04-05-2009 08:40 PM  9 years agoPost 66
payne1967

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uk

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you don't need to burn 5l of petrol
the mod is no better than not having it
but what we will see is a lot of 700's up for sale

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04-05-2009 10:44 PM  9 years agoPost 67
Danish helifly

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Denmark

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Thats not true. Mine are holding perfect for the last 10gal. No signs and wear...
3rd bearing block below maingear protect´s against frame twist. My trex700 has burned over 100liter total, and the only issue i had was the maingear problem, and that is fixed completly..

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04-05-2009 10:56 PM  9 years agoPost 68
LONEWOLF2440

rrElite Veteran

MYRTLE BEACH S.C

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My main gear seems to be fine but getting ready to do another clutch so far the updated main gear has been good

MIKADO LOGO 600 TREX 550

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04-05-2009 11:27 PM  9 years agoPost 69
payne1967

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uk

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Danish Helifly
i glad it worked on your 700
the 3rd bearing mod hasn't worked on mine

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04-06-2009 03:12 AM  9 years agoPost 70
Mike Bilyk

rrApprentice

Tulsa, OK - USA

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I bought a set of -1 gears when i first got my 700 and still have not needed them, 15 gallons later. Im still flying the stock gear that comes in the kit.

guess im lucky

AMA # 617778
Team MasterCard

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04-06-2009 08:04 AM  9 years agoPost 71
Danish helifly

rrNovice

Denmark

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payne1967..
Some others had issues with the plastic clutch bearingblock, that has been compressed so the bearing´s get loose. Check your pinion that drive the maingear. There must only be a hair of tolereance in between.
If pinion feels loose, you might have problems with your plastic bearingblock.
Also, check your maingear. If you can see the upper toth wearing flat on maingear, you have frame twisting like i had.. You can see my pictures from the Helifreak link i posted early in this topic.

Hope you will get your problems solved..

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04-06-2009 10:26 AM  9 years agoPost 72
Helinutnz

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below 42 South

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damn thats ugly

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04-06-2009 09:36 PM  9 years agoPost 73
payne1967

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uk

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its not my clutch bearing block, i have the ali one fitted

mine will be solved one way or the other

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04-06-2009 11:01 PM  9 years agoPost 74
Helinutnz

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below 42 South

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Mines still going strong at this stage after about 3 or 4 gallons. We also don't have the breaking links down here.....is it something to do with the temperature? Don't seem to have many reports at all of gears stripping in NZ.

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04-07-2009 03:15 PM  9 years agoPost 75
johnsalary

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MI

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Looks like some magic around the T700 gears
http://runryder.com/t506463p1/
People reporting problems with derlins as well. Mo mater who makes it.

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05-25-2009 03:20 AM  9 years agoPost 76
kinson88

rrNovice

hoover, heliland

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just striped the v1 on the (first flight 10 second) and v2 gears too( 20 second after idle up)......help!!!!! please

aurora90,700e,Sirmoke90n,fury extreme,4xtrex450,hdx3d,harrican550, trex600e/n, 6hv, rave450,sjm500

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05-25-2009 04:24 AM  9 years agoPost 77
Eco8gator

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Palm Beach, FL

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Man I cant believe people can strip these gears so easily. I know quite a few of the guys, including me, who have the TREX 700 with electric conversions and I am pretty darn sure we have more torque, and power than the nitro guys...way more None of use can strip the gears unless we loose a bearing in the motor or the motor mount screws come loose.

Is it an alignment issue thats causing the gears to strip...its definitally not a strength thing because they take the abuse from electric motors.

C

Xera Motors
ProBar
Minicopter
Thunder Power

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05-25-2009 06:01 AM  9 years agoPost 78
sasa

rrNovice

UAE

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honestly main gear qulity is poor and and looser for nitro and when you converate to electrical of course you will use 10T pinion and this is less mesh than stock 20T so the chance of stripping may happen from first flight .and for nitro may from 10 -15 flight for gasser from 40 -60 flight because in gasser use big pinion and low head speed .

SASA

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06-01-2009 12:51 AM  9 years agoPost 79
MJA

rrKey Veteran

UK

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Is there any definate fixes/advances for this problem yet?I have just stripped one of the version 1 gears on my 700 but i had some up/down play on the gear which won't have helped.

There seems to be some speculation that it doesn't happen in warmer climates.Well they have tyre warmers in Formula 1,perhaps the answer is for Align to make some temperature regulated gear warmers that can be used pre flight powered of a 1900mA Lipo
Hell they could even call them the Align 2 in 1 gear regulators

Martin

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06-01-2009 01:50 AM  9 years agoPost 80
payne1967

rrElite Veteran

uk

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the real fix is to sell it and buy a heli from a company who has a r&d dept (not just a video dept)and a quality control dept
thats how i cured mine

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