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HomeAircraftHelicopterAlignT-REX 700N › Button head shouldered bolts?
01-16-2009 05:20 AM  9 years agoPost 1
Ghostrider

rrElite Veteran

San Diego, CA

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OK, I have fckng had it with these POS shouldered bolts. Trying to pull a motor right now on my 700 and 3 of the 4 bolts are shot.

Has anybody found a replacement for these things yet?

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01-16-2009 05:47 AM  9 years agoPost 2
Heli 770

rrProfessor

USA.

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A member from Israel was having some washers machined to replace the shouldered bolts with regular hex bolt. They looked real good, PM Mr.Mel he may have more Info.

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01-16-2009 03:48 PM  9 years agoPost 3
AzHyper

rrKey Veteran

Peoria, Az.

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There is no 700N part number for those that I can find. They are the same as on the 600N. Why aren't we having the problem on the 600N? And yes, I've done more than my fair share of dremmeling on the 700N. Very annoying.

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01-16-2009 03:50 PM  9 years agoPost 4
GScott

rrElite Veteran

Lewis Center, OH

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The bolts on the 600 have a deeper hole so they don't strip out as easily. Not sure why they cheaped out on the 700 and used different screws.

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01-16-2009 04:05 PM  9 years agoPost 5
AzHyper

rrKey Veteran

Peoria, Az.

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I never noticed, but you're right. They are about .2mm deeper on the 600N. They will be replaced the first time I re-kit my 700N. Given all the issues I had with my 2nd shipment kit I've learned my lesson with Align. Either buy from the first shipment or wait 3 months until they fix all the little stuff. Anybody want to buy 5 NIP packs of straight links?

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01-17-2009 05:53 AM  9 years agoPost 6
custombuiler

rrNovice

marryland

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other peoples tried the 600 screws.. it looks like a mix.. some have more bit for the tool some are exactly the same
try these - i ordered them for mine http://www.lironheliproducts.com

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01-17-2009 11:36 PM  9 years agoPost 7
baby_zyklon

rrElite Veteran

Singapore

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yes, I got a bag of the screws in the 600N spare part bag. Some had the deeper bite, some doesn't. And yes, I am talking about screws in the same packet.

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01-18-2009 03:01 PM  9 years agoPost 8
heli3dmax

rrApprentice

DuBois, PA USA

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Washers made in Israel
The washers are made by Liron Alm. The now famous liron washer!

His site is http://www.lironheliproducts.com check it out he has some really good ideas.

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01-18-2009 06:26 PM  9 years agoPost 9
Ghostrider

rrElite Veteran

San Diego, CA

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Yah, I ended up ordering the Liron washers.

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01-18-2009 11:35 PM  9 years agoPost 10
swasey1982

rrApprentice

La Ceiba, Honduras

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yup, count me in, I was trying to unmount my engine and yup, striped like a show girl in vegas, align has one sweet heli but they had to mess up with the screws, and liron is out of washers !!

Richard

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01-19-2009 06:02 AM  9 years agoPost 11
custombuiler

rrNovice

marryland

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just checked, they are back in stock

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01-19-2009 07:00 AM  9 years agoPost 12
TattooArtist

rrVeteran

Chestnut Ridge NY

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They have an entire set in ss for the 700

http://www.rcscrewz.com

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01-19-2009 08:03 AM  9 years agoPost 13
duke666

rrKey Veteran

Hampshire, UK

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They have an entire set in ss for the 700
Does not include the button heads.

Duke

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01-19-2009 03:53 PM  9 years agoPost 14
PilotDaz

rrKey Veteran

Seattle, WA

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Yep, it's the 700N bolt quality causing the problem. I've found that about 20% of the 700N bolts have these 3 issues:

1) Too soft.
2) Hex hole too shallow (about .2mm).
3) Shoulder is off-centered. You can see the shoulder wobble as you turn the bolt. This causes the bolt to stick firmly in the carbon fiber hole (due to friction) without the need for locktite.

The quick solution: Use 600N bolts - they are perfect and I've had zero problems with these.

To get the stuck bolts out quickly, use this:

It takes less than 60 seconds to remove a stuck bolt with this tool.

Those Liron washers look great, I'll probably get some of those eventually!

~Team Collective Mayhem - "My anger management class really PISSES ME OFF!"

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01-20-2009 09:36 PM  9 years agoPost 15
col

rrVeteran

U.K. Ipswich.

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Almost a dollar each !!
Count me in just ordered mine. i ain't going through that ****e again...

also i have the only 700 at our place with a touch of fuel foaming and i does make sense that the off centre shoulders could cause a slight miss alignment of the motor. the fan and clutch runout is good.

looking forward to getting them but not looking forward to getting the old bolts out. i was very carefull to not crank them up too much but we shall see......

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01-20-2009 10:18 PM  9 years agoPost 16
PilotDaz

rrKey Veteran

Seattle, WA

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but not looking forward to getting the old bolts out. i was very carefull to not crank them up too much but we shall see......
Just buy that tool pictured above and a tiny drill bit and you'll save yourself a TON of grief if they are stuck. Very easily worth the $8

~Team Collective Mayhem - "My anger management class really PISSES ME OFF!"

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