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HomeAircraftHelicopterAlignT-REX 700N › Pinning tail boom
04-07-2010 01:10 AM  8 years agoPost 1
edward74

rrApprentice

Titusville, Florida

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Got my first 700 and wondering if anyone is pinning the tail booms, if so how are you doing it, I was running Min Air stuff and was pinning tail between the mounting bolts,

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04-07-2010 02:13 AM  8 years agoPost 2
ESWLFSE

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Liberty Hill, TX

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Error

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04-07-2010 02:15 AM  8 years agoPost 3
Justin Stuart (RIP)

rrMaster

Plano, Texas

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Can you glue the boom to the boom clamps?

Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives

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04-07-2010 02:54 AM  8 years agoPost 4
jschenck

rrProfessor

La Vista, NE.

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no real need to pin the tail case to the boom (tail fin bracket does that already) but definitely want to pin the front of the boom to the transmission case.

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04-07-2010 03:15 AM  8 years agoPost 5
devious17

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Malaysia

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If your 700 is the LE version then additional pinning isnt required as the stock boom on both ends are pinned.

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04-09-2010 06:13 AM  8 years agoPost 6
Anthony.L

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Seattle, WA

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Can you glue the boom to the boom clamps?
Sure, but you want to deal with that every time you disassemble the tail for maintenance or to replace TT gears?! Heck no.

Yes, it's a very good idea to pin the front of the tail boom. I've personally seen more then one 700 tail boom slide out of engagement with the TT gears during flight. Granted this was during very heavy 3D, but it can certainly happen. The fact the newer 700 LE comes with the tail pinned only supports that fact even more.

In other words, it's really cheap insurance and peace of mind.

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04-09-2010 08:38 PM  8 years agoPost 7
edward74

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Titusville, Florida

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boom
Thanks for the info everyone, I will pin it.

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06-16-2010 09:19 PM  8 years agoPost 8
darkfa8

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Brick, NJ - USA

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to update the older T700NSP to the LE "pinned" boom do you need:

1 LE tail boom
1 set of LE front tail transmission case halves

??

- Dan Goldstein
Team Revolectrix

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06-16-2010 10:24 PM  8 years agoPost 9
jschenck

rrProfessor

La Vista, NE.

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I didn't do that, just drilled a hole through the transmission case and boom then put a screw in there. Make sure the screw isn't too long, don't want it hitting anything. Also I drilled the hole in the tail case and just 'touched' the boom to mark it. Then I took the boom off so I could drill through it but have all the debris fall out. Doesn't take long.

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06-17-2010 02:29 AM  8 years agoPost 10
JeffKollin

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Jenison, MI

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Just put together my 700LE and it came with a bolt that goes into the front tail boom mount on the right side in through the tail boom.

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06-17-2010 04:20 AM  8 years agoPost 11
Anthony.L

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Seattle, WA

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Yes, it's well know the LE has the tail boom pinned.

If you crash and kill the boom and tail case, then sure get the LE replacement parts. In the mean time, break out a 3mm tap and bit and make your own! Takes 5 mins and it's cheap insurance.

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06-17-2010 10:25 AM  8 years agoPost 12
lightningrc

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UK

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The later pin boomed types , the screw only pushes against the boom , it dont go through the boom.

If you can lightly tighten screw in so it marks the boom , then drill hole in boom , it will then be pinned properally not just press against the boom.

Like said earlier to best to remove boom first .

Off subject I like the way they pin the tail end , wish they would copy this on 600,s , save alot of worrying if the tail wil be out of alignment or fall off.

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06-21-2010 03:03 AM  8 years agoPost 13
marc8090

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Long Island, N.Y.

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The booms in LE kits most cerainly come with a hole for the screw that pins the boom to the mount. The screw does not just touch the outside of the boom. That would be pointless.

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06-21-2010 05:20 AM  8 years agoPost 14
jongurley

rrApprentice

North Carolina

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I did it simplier than that,, just take a small drill it, just smaller than a servo screw,(like you screw into wood), drill a hole threw the tail case and boom, then screw that screw in, no lock tight needed,, simple and no locktight needed,

HeliWerks Inc. Team Factory Pilot
Team Thomco Hobbies
Thompson Heli Consultants Inc.

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06-21-2010 10:54 AM  8 years agoPost 15
lightningrc

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UK

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The booms in LE kits most cerainly come with a hole for the screw that pins the boom to the mount. The screw does not just touch the outside of the boom. That would be pointless.
So are you saying that the new tail booms now have a hole on the front end to lign up with this screw ?

As I had an early 600LE and mine did not .

Plus all the booms ive bought have not had , may be im just buying old stock but ive yet to see one with a hole up front , they all have a pointless one on the rear which was for old style plastic tail to lock into .

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06-21-2010 12:54 PM  8 years agoPost 16
marc8090

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Long Island, N.Y.

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That's right. I just went to my workshop and double checked. Both the aluminum and the carbon booms have a 4mm hole on the right side about 2 inches from the front where that screw goes into.

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06-21-2010 02:42 PM  8 years agoPost 17
lightningrc

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UK

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Sorry but the 4mm hole on the 600's is for the tail end , the end with the slot is for the front end.

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06-22-2010 04:54 PM  8 years agoPost 18
marc8090

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Long Island, N.Y.

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We're talking 700 here, not 600. Anyway, at the end with the slot (the front), the slot is on the left side of the boom. On the right side about 2 inches back there IS a 4mm hole. On the back end of the boom there is a single hole on the left side about 3/4" from the end for the plastic part that the fin mounts to and pins the gearbox on. Plus, that hole is larger than 4mm. So to summarize there is 1 slot and 2 holes in a 700 boom, and I do know which end is the front and which is the back.

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06-22-2010 06:03 PM  8 years agoPost 19
lightningrc

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UK

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Thankas Marc , ive yet to come across one of the 700,s also as I stocked up on booms and touch wood still using early versions before the 700LE came out.

Hope they do the same also on the 600. as the screw just buts up against the tube , unless I have old stock of them also

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