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Logo 500 › Regarding stripped gears on the 500
08-07-2007 08:11 PM  10 years agoPost 41
Motions

rrVeteran

Tallahassee, FL

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This has got to be a setup issue. I've been trying everything I can to get the mod 0.5 gear to strip and it just won't happen. Are you guys allowing backlash between the pinion and main gear?

_______
Scott M
Team Mikado USA

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08-07-2007 09:03 PM  10 years agoPost 42
earl

rrNovice

Belfast, Northern​Ireland

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Hi guys,
This reminds me of an amusing story:

A friend of mine called a model shop looking for a part for his heli. When he was told the price he said "What!!! I can get from the guy down the road for a lot less than that"

The model shop owner said "Has he got them in stock?"

My friend said "No"

The model shop owner then said " OK when I have none in stock, I will sell them for that price too!!!!!"

Regards

Don't say "Crash" say "Ground Proximity Incident"

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08-07-2007 09:07 PM  10 years agoPost 43
Thomashome

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West Sussex UK

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08-07-2007 09:14 PM  10 years agoPost 44
Mini-dub

rrApprentice

Renton, WA

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Thomas - was there any play between your main gear and pinion? How hard were you flying it when it stripped? I'm just wondering what the circumstances were that it stripped.

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08-07-2007 09:21 PM  10 years agoPost 45
earl

rrNovice

Belfast, Northern​Ireland

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Guys,
Just finished building my Logo 500 3D. With all this talk of stripping gears, I am nearly scared to fly the dam thing now.

Can't understand why some people say they are having no problems and others are, if everyone is seeting up as per the guidelines?

Regards

Don't say "Crash" say "Ground Proximity Incident"

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08-07-2007 09:22 PM  10 years agoPost 46
quattrokid73

rrVeteran

Huntingdon Valley,​PA, USA

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Thomas, what was your complete setup?

Aero-Model/Hacker Brushless/Mikado 2007

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08-07-2007 09:33 PM  10 years agoPost 47
Thomashome

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West Sussex UK

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Ok, to start with I set my gear mesh tight so when I spin the main gear it feels stiff, I then loosen it untill the gear feels free but with no play between pinion and main gear.

With a new model I always take it easy for the first 4 or 5 flights then check everything before I start to throw it about more. I took off did a couple of flips and a circuit then some aileron ticktocks. which I reckon caused the problem as soon after I fliped to inverted and as it loaded up the gear stripped.

My set up:

Logo 500 3D with 21t pinion
Zpower Z30a 1100
TP 3850 6S LiPo
Jeti 77 opto heli ESC
Western Robotics 5a BEC
CSM 720/JR8900
Futaba 9255's
NHP 500 Blades

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08-07-2007 09:40 PM  10 years agoPost 48
willie evans

rrVeteran

Alberta, Canada

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over one year old.

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08-07-2007 10:00 PM  10 years agoPost 49
esmel

rrNovice

Raufoss - Norway

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I've had 13 flights with my L500 an doesn't even see the slightest bit of wear on the maingear... No fancy flying but I have stressed the gears just to see if i can get it to strip but no luck!

I've tried 20, 21 and 22T pinions. When I change the pinion i just loosen the motorscrews a bit, take off the pinion and put on the new one. I just thighten the pinion so it moves easily on the motorshaft. Then I press the motor down on to the motormount so it sits flat and push the motor/pinion into the maingear untill the pinion "snaps" in place. I then apply a small amount of preasure to the engine and pinion and fasten the motor and then finaly the pinion. Make sure you push the pinion straight in to the main gear so you don't distort the maingear and make it wobbel!

I have the z-power 30A, 21T pinion and 6s FP EVO20 3700mah

Have you checked the maingear for wobbel?

When i was to maiden my L500 I noticed a smal amount of wobbel on the maingear. A friend and I found out that we could just flip the maingear on the mainshaft and spin the rotor to find out where the maingear was wobbeling and just thighten the screws carefully until the wobbel was gone.

I'm allways suspicious when something goes wrong on one of the first flights. IMHO it's mainly due to pilot error or something that's not correctly screwed/mounted together. But hey, if someone else have had this problem pleace post so we can try to avoid it from happening to us.

(sorry for any misspelling etc. I don't write english that often but just had to post a reply to this topic... ;-) )

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08-07-2007 11:10 PM  10 years agoPost 50
willie evans

rrVeteran

Alberta, Canada

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over one year old.

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08-08-2007 01:40 AM  10 years agoPost 51
Motions

rrVeteran

Tallahassee, FL

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I think the motor mount is getting blown a little out of proportion. There is absolutely nothing wrong with the plastic mount. I flew 2 flights today trying like hell to get the gear to strip and it just won't do it.

I also disagree that this is not a beginner model. This kit is one of the easiest to build and setup. It has minimal parts unlike some of the other fancy blinged out carbon fiber models. The kit may cost a little more but let's see how much it cost when you crash. No $135 frames here.

There's been 3 people at most that have complained about stripped gears and it just gives people a reason to belly ache. There's already been hundreds of kits built and flown with no problem at all.

_______
Scott M
Team Mikado USA

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08-08-2007 02:42 AM  10 years agoPost 52
caseyjholmes

rrElite Veteran

Portland, Oregon

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Even when I was using the stock washers on the stock plastic motor mount, I still never stripped a gear. I also tried low tooth count higher torque pinions. I have also been using the slightest "half a hair width" of backlash too. I'm talking barely there backlash..

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08-08-2007 03:30 AM  10 years agoPost 53
willie evans

rrVeteran

Alberta, Canada

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over one year old.

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08-08-2007 03:32 AM  10 years agoPost 54
willie evans

rrVeteran

Alberta, Canada

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over one year old.

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08-08-2007 04:41 AM  10 years agoPost 55
caseyjholmes

rrElite Veteran

Portland, Oregon

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.with no one telling me what to post.
Do I not video tape my flights and show you the broken stuff when it breaks? I also showed you my plastic motor mount after it had been used.
Had I Stripped a gear or ruined a mount, you'd have known. Nobody directs me what to post with my findings of these products, other than being held back from saying anything positive or negative about them.
Heck just at least pass out some 10mm wide washers
Seems like you've found the answer to your problem. It's a modification, not required to make the kit run properly, IMO.

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08-08-2007 04:55 AM  10 years agoPost 56
willie evans

rrVeteran

Alberta, Canada

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over one year old.

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08-08-2007 05:22 AM  10 years agoPost 57
willie evans

rrVeteran

Alberta, Canada

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over one year old.

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08-08-2007 05:57 AM  10 years agoPost 58
caseyjholmes

rrElite Veteran

Portland, Oregon

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Let's put this in perspective, Mikado made the mistake with the plastic mount and the choise of MOD .05 gearing Not you Casey
It more along the lines sounds like you made the mistake of abusing your powers to torque a wrench. If you hadn't warped the mount by over tightening the screws in the first place, the oversized washers would not have been required. The mount inner rails have to be that thin for the herringbone pinions to fit. Cranking the screw down ruins it! The screw does not need to be that tight. Offering mechanical help is not the same as being offended.

I have taken no offence to anything you have said. You are upset because your heli is down, and I for one, know how that feels. No reason for making cheap shots like
from team gotta pay retail...with no one telling me what to post.
without so much as an insult from me . I'm not the one with the chip on my shoulder. No need to apologize.

Enjoy your rant and I hope you get it worked out soon. No need to keep explaining myself

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08-08-2007 06:04 AM  10 years agoPost 59
willie evans

rrVeteran

Alberta, Canada

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over one year old.

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08-08-2007 06:13 AM  10 years agoPost 60
willie evans

rrVeteran

Alberta, Canada

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over one year old.

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Logo 500 › Regarding stripped gears on the 500
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