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HelicopterAlignT-REX 700N › Main shaft too big
12-29-2008 02:55 AM  8 years agoPost 1
scott s.

rrElite Veteran

Orange, Ca.

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I bought a new kit that i started christmas eve and finished christmas day. In the middle of the build turns out the main shaft is too big, by thousand(s).
Now i know these are a tight fit but this was/is wrong, BTW not this first 700 i built.
I tried oil, grease, got it on but i know it`s not right.
Luckly before i went postal i checked and turns out had a spare shaft i bought before for the other kit for a crash.

Just wondering if anyone else experienced this

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12-29-2008 03:04 AM  8 years agoPost 2
Sam2b

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Seattle, WA

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So what is the part that fits too tight: the swash or the rotor head?

On my 600n I experienced some new main shafts a tiny bit to snug for the wash to easily slide up and down. So I think quality control is not the greatest with some Align parts. I used 600 grit sandpaper to evenly sand the shaft to mitigate the problem.

_Sam B_
Team MSH USA * Protos Max * Xpert servos * Cyclone Blades * ProgressiveRC * VoltMagic * Ecalc

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12-29-2008 03:33 AM  8 years agoPost 3
scott s.

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Orange, Ca.

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Bearing blocks

Into the lower bearing blocks in the frame.

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12-29-2008 04:04 AM  8 years agoPost 4
Ralphw

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Spring, TX

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No offense intended here, but is it possible you're trying to insert the shaft upside down? Upper part of the 700 shaft is larger than the lower which is why there is no collar on the shaft. Just a thought !!

Ralph W.
"Life's Short, Fly Fast"

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12-29-2008 04:08 AM  8 years agoPost 5
scott s.

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Orange, Ca.

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like i said

not my first 7oo build and yes i know which way is up
thanks for the though.

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12-29-2008 04:26 AM  8 years agoPost 6
Ralphw

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Spring, TX

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Missed the "not the first 700" part of the post...sorry to offend.

Ralph W.
"Life's Short, Fly Fast"

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12-29-2008 04:37 AM  8 years agoPost 7
scott s.

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Orange, Ca.

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no problem , i got it done and had 3 days of beautiful weather to fly in, just a little cool.

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12-29-2008 06:36 AM  8 years agoPost 8
duke666

rrKey Veteran

Hampshire, UK

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My main shaft was too big too. Purchased a new pack & problem solved.

http://runryder.com/helicopter/t472...?top=1230532561

Duke

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12-29-2008 03:04 PM  8 years agoPost 9
scott s.

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Orange, Ca.

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Thank you Duke

Though it was just me.

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12-29-2008 04:22 PM  8 years agoPost 10
hootowl

rrProfessor

Garnet Valley, Pa.

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Just use some good plumbers emery cloth. You can find it at the plumbing dept. It's the red stuff that comes in a 1" wide roll. Chuck the shaft in a cordless drill and go to town on high speed. Be careful to sand it evenly.. going up and down on the entire shaft. Do it a little at a time and check the fit. Doesn't take long.

Wolves don't lose sleep over the opinions of sheep

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12-29-2008 05:37 PM  8 years agoPost 11
Azlum

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Limington, ME - USA

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Mine was too big too... I have some 600 grit sandpaper at home and I'm going to try that on it tonight to see if it helps.

- Azlum

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12-29-2008 07:49 PM  8 years agoPost 12
latesleeper

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OH

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The mainshaft that came in my kit was not right either. Tried using metal polish and gave up. Got another mainshaft and it fit fine.

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12-29-2008 07:53 PM  8 years agoPost 13
Stick Twanger

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Honeoye Falls, NY

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And it doesnt bother you guys that you had to either buy another shaft or use emery cloth??
That absolutely baffles me...

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12-29-2008 08:02 PM  8 years agoPost 14
duke666

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Hampshire, UK

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If I had bought my kit locally then sure I would ask for replacement. But for the price of two new shafts (under £10.00) in a pack I don't think it's worth it!

Duke

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12-29-2008 08:06 PM  8 years agoPost 15
Stick Twanger

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Honeoye Falls, NY

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But why do you settle for this? Dont you expect better?

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12-29-2008 08:40 PM  8 years agoPost 16
Kelly Fairbanks

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Twin Falls Idaho

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Mine was also too big sand paper and about 5 minutes prob solved!

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12-29-2008 09:16 PM  8 years agoPost 17
scott s.

rrElite Veteran

Orange, Ca.

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Stick

My point exactly, for what you pay the stuff is supposed to fit, if i wanted to build from scratch i would. The shaft will be replaced, i know the hobby shop owner and already told him about it onver the holiday, just making a point.

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12-29-2008 09:21 PM  8 years agoPost 18
scott s.

rrElite Veteran

Orange, Ca.

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On the same subject

I noticed the tail does not sit at 90 degrees to the heli, the slot on the boom that goes in the boom holder is off a few deegrees, or the hole that the plastic pin goes in is off. It`s one or the other the last few booms i bought have been that way also.

Another quality control issue that`s not being paid attention too.

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12-29-2008 10:25 PM  8 years agoPost 19
Olli-Pekka Mahrberg

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Finland, Joensuu

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The main shaft in my kit was not perfect either.

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12-29-2008 10:56 PM  8 years agoPost 20
Stick Twanger

rrApprentice

Honeoye Falls, NY

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The main shaft in my kit was not perfect either.
I have received a few PMs that tell me that is OK and acceptable. For what you paid for the kit, you should not expect all of the parts to be there nor should they fit. I was not aware of this.

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HelicopterAlignT-REX 700N › Main shaft too big
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