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HelicopterAlignT-REX 700N › 700 Exploded today/POLL how many have had this happen??
12-28-2009 08:22 PM  7 years agoPost 161
HiroboFreak

rrVeteran

Central Coast, NSW, Australia

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I would steer well clear of Stainless hardware in high-load areas.
Stainless is much weaker than High Tensile/hardened steel.

T-rex700n VBar 5.3 Pro | T-rex700e DFC VBar 5.3 Pro | JR DSX9
Team RCBits | Team Lynx

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01-04-2010 08:53 PM  7 years agoPost 162
rudyy

rrElite Veteran

E. Amherst, NY

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I spoke with the owner of Lunsford racing and I am shipping him a new spindle and bolt to examine, and some info about the failures.
Any update on the inspection?

Rudy

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01-04-2010 08:55 PM  7 years agoPost 163
PC12DRVR

rrKey Veteran

USA

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I finally got a spindle and bolts, sent out the other day, give me a week and I should hear something hopefully. I will update as soon as I know.

If Lunsford wants to make us some higher quality bolts, how many are interested? if you want just PM me, so I can tell Lunsford there will be a good demand.

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01-04-2010 09:08 PM  7 years agoPost 164
Thumpernator

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Senoia, Georgia, USA

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I think it would be better to just get a new spindle with threads all the way to the end, like most other spindles. Then just use an appropriate washer and bolt.

Dave
I keep on thinking, but nothing's happening. Knuk, Knuk, Knuk

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01-04-2010 09:15 PM  7 years agoPost 165
jschenck

rrProfessor

La Vista, NE.

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I think it would be better to just get a new spindle with threads all the way to the end, like most other spindles. Then just use an appropriate washer and bolt.
I agree, maybe QUK is listening?

but, if they are not showing up anytime soon I'm interested in this:
If Lunsford wants to make us some higher quality bolts, how many are interested? if you want just PM me, so I can tell Lunsford there will be a good demand.

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01-04-2010 10:19 PM  7 years agoPost 166
elmobad

rrApprentice

chicago IL

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count me in either way

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01-04-2010 10:24 PM  7 years agoPost 167
eperez74

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Tulsa, OK

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Im in for either option as well.

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01-04-2010 10:28 PM  7 years agoPost 168
PC12DRVR

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USA

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Guys please PM me a quantity you would want so I can give Lunsford an incentive to produce them.

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01-04-2010 10:47 PM  7 years agoPost 169
eperez74

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Tulsa, OK

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PM sent

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01-04-2010 11:21 PM  7 years agoPost 170
rudyy

rrElite Veteran

E. Amherst, NY

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Guys please PM me a quantity you would want so I can give Lunsford an incentive to produce them.
I think we should wait for the inspection outcome first before going any further.

Rudy

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01-05-2010 12:32 AM  7 years agoPost 171
PC12DRVR

rrKey Veteran

USA

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I agree, but I am just trying to be prepared and have information ready at hand, in the case that he says it could use improvement or wants to know how much interest there would be if he goes through the trouble of making something, instead of coming back here and taking a few more weeks to find out how much demand there might be, I'm doing the leg work. Based on the way these are failing in the same spot, its easy to assume there might be a design/material flaw in the bolt and or spindle. It doesn't hurt to gather information, I am not asking for promises here.

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01-05-2010 01:35 AM  7 years agoPost 172
T Howard

rrApprentice

Sylacauga Alabama

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IO have A 700 on the way and would like to prevent this problem ahead of time if I can. I am not A real hard 3d pilot but I do love cutting grass.

OHHHH crap!! That was fun

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01-05-2010 02:22 PM  7 years agoPost 173
Yogi 1

rrApprentice

Clinton,CT USA

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I would be in for two sets tried their main shaft bearing block bolts and they were excellent.Yogi

Velocity Is A State Of Grace Get Some Now !

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01-05-2010 02:26 PM  7 years agoPost 174
rpat

rrElite Veteran

Weirton, W. Va.

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You can put me down for a couple of sets also.

trex 700fbl cal30,minititan,, trx600fbl,trex250,logo 500,Velocity N2

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01-06-2010 01:53 AM  7 years agoPost 175
PBusch

rrKey Veteran

Minnesota

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I don't think it has anything to do with the old bolt getting fatigued, its a defective part so if you keep changing them how do you know if your replacing a good bolt with a defective one?

I'm probably wrong but this isn't an issue with other helis.

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01-06-2010 04:52 AM  7 years agoPost 176
PC12DRVR

rrKey Veteran

USA

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Thats why I am looking into a better quality bolt

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01-11-2010 10:44 PM  7 years agoPost 177
PC12DRVR

rrKey Veteran

USA

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I just got word from Lunsford Racing,and even though I told them it was an M6x16 verbally, I guess it took them seeing the bolt to tell me they cannot make bolts that big , so I am back to square one. No wonder they stick to car products..

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01-13-2010 03:08 AM  7 years agoPost 178
da_man

rrKey Veteran

Central NC

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I went down to true value and got a M6x15 hardened steel bolt. You might be able to get some from MSC. I was able to get a bolt with a stamp of 12.9 on it which means it can not be weaker than 170ksi (ultimate tensile stress). The strongest stainless bolt I could find was rated at about 100ksi. As far as washers go I used an M6 on top of a M7. I found hardened 1/4 washers that were almost good. The ID and OD were about .04" over what I wanted.

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01-17-2010 12:52 AM  7 years agoPost 179
RussJ

rrApprentice

lockport, new york usa

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I went to the hardware store and purchased some m6x15 allen cap screw bolts too. They were also marked 12.9 on them. 12.9 is a very good grade of bolt. I also purchased some washers that matched the inner dia. of the bearing so when tightened it will provide the proper load on the bearing. It is working out well for me. No need for the collar screw bolts that align provides you with. I did make a stink about people complaining about this this problem earlier in this post, but after taking mine apart and inspecting them, it is very clear that the bolts align provides you with are junk and should not be used.

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01-17-2010 01:56 AM  7 years agoPost 180
Thumpernator

rrKey Veteran

Senoia, Georgia, USA

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Are you guys (who are using non-Align bolts) using any kind of spacer to fill in the gap inside the feathering shaft?

Dave
I keep on thinking, but nothing's happening. Knuk, Knuk, Knuk

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HelicopterAlignT-REX 700N › 700 Exploded today/POLL how many have had this happen??
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