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T-REX 250 › New Tail Rotor Hub identification
12-26-2008 11:22 PM  8 years agoPost 1
dkshema

rrMaster

Cedar Rapids, IA

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Santa left me a new Trex 250 yesterday. How do I know if my kit has the *NEW* tail rotor hub, or the old one? Is there a quick way to ID which one I have.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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12-26-2008 11:28 PM  8 years agoPost 2
docjoe

rrElite Veteran

Stockton, CA United​States

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The new hub has 1 bearing in the blade grip instead of 2. The diameter of the hub should be about 2.8mm. Unfortunately my new 250 had the old hub with 2 bearings and I've been experiencing tail hold issues.

Joe
We haven't seen Colonel Angus around these parts for years!

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12-27-2008 01:32 AM  8 years agoPost 3
Gyronut

rrProfessor

Martinsville In.

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New Hub , Old Hub are diminsionally the same. Diff is in the bearings.

Old has (2) 1.2mm per side. New has (1) 2mm single.

I ended up using (1) 2mm and (1) 1.2mm bearing per blade grip.

So far.................Priceless........ for me anyway.

Rick

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12-27-2008 01:46 AM  8 years agoPost 4
Heliguychris

rrKey Veteran

Perth, West​Australia

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The newer kits have a sticker attached to page 14 of the manual, RHS, middle of the page, illistrating the single bearing arrangement..... the original kits have no sticker on page 14, and double bearings
HTH
C.

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12-27-2008 03:15 AM  8 years agoPost 5
dkshema

rrMaster

Cedar Rapids, IA

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Thanks a bunch, guys.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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12-27-2008 04:52 PM  8 years agoPost 6
EASYKILL

rrApprentice

Sonora,Ca - US

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The shop I bought mine from said my serial # was on the "the good list". That was not the case, it had the double bearing set up. $500 worth of heli and bats sitting here doing nothing while AssuranceRc takes their sweet time shipping a repair hub that I doubt will be much better.
So basically what we have here is, very poor quality, no product testing, very poor customer service and to wrap it up, no accountability! Man I wish I had my money back.
OK, sorry guys rant over. Flame suit on. Bring it!

Hello, my name is Tony and I'm a heli addict...

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12-27-2008 11:10 PM  8 years agoPost 7
monkey nuts

rrApprentice

chester england

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i have the tail with 2 bearings is this bad. what will it fly like, have only really hovered it in the garden for 1 battery.

gareth

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12-27-2008 11:39 PM  8 years agoPost 8
docjoe

rrElite Veteran

Stockton, CA United​States

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Gareth,

You and I have the same tail and I have been having a terrible time trying to get my tail sorted out. It still is losing hold, intermittently. I thought that it might have to do with the boom slipping but I think it is also the bearings/hub problem. I would recommend getting onto the "freak" web site and they've got a work-around to help sort out your tail. However, I think the new single bearings and the new tail hub will help.

Some people have had the old tail without any problems. Who knows? you might be one of the lucky ones. Unfortunately, I'm not one of those.

Joe
We haven't seen Colonel Angus around these parts for years!

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12-28-2008 07:06 PM  8 years agoPost 9
EASYKILL

rrApprentice

Sonora,Ca - US

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OK, on a brighter note I think I fixed mine. ended up replacing the horrible stock bearings with ones from the tail of a Gaui. I think Heim Joint on the freak mentions this. I used two different bearings on each blade holder. Part #s are 203250 and 203270. By stacking these different sizes it takes all the play out both lateral and end. The bolt holding them on could be a bit longer but with loctite should be ok. Keep in mind this is with the stock hub, so if like me you can't get assurancerc to do anything this seems to fix it. I still have a bit of a wag but not bad. The Chinese weight mod and/or a better tail servo should fix that. Good luck.
PS: I'm still pissed at Align

Hello, my name is Tony and I'm a heli addict...

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12-29-2008 02:43 AM  8 years agoPost 10
caseyjholmes

rrElite Veteran

Portland, Oregon

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Hmm, a micro heli with tail problems? Nah! never happen (remembering the Hornets)

So what exactly does the Chinese weight mod do. I saw a picture of it already..

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12-29-2008 02:57 AM  8 years agoPost 11
Heliguychris

rrKey Veteran

Perth, West​Australia

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I LMAO when i think of the Hornet tails hehehehe ... and at the time i thought they were pretty good LOL Anyone remember the Century 3D pro hehehehehe.... what a name LMAO!!!

Another way to tell between the newer kits and the originals is AZJ and JK have their signature on the old kits, on the outside of the boxes,,,,, but on the newer kits the signatures are of AZJ , Lukas and Bert .....

These 2fiddys have decent tails

http://www.youtube.com/watch?v=yOE3uHyhLzc

In that vid , is the new tail hub+single bearing, no chinese weights or other tail mods, with untrimmed 42mm straight cut blades.....oh, and a 401 Does ok

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12-29-2008 03:17 AM  8 years agoPost 12
caseyjholmes

rrElite Veteran

Portland, Oregon

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Thanks for the vid.
Looks fairly solid to me. Perfect size for the yard.
The Hornets were a mess. I always wanted a Hornet with a Raptor-like head and a belt drive.. looks like this is it!

Who has the new hub? Or is there an ETA on that? (famous align customer testing?)

Thanks, considering this heli and it's good to know this kind of stuff before I buy. I suppose I could turn up a hub on the lathe if it comes down to it.

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12-29-2008 03:39 AM  8 years agoPost 13
Heliguychris

rrKey Veteran

Perth, West​Australia

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H25074T is the part number for the new hub pack .... comes with the hub, bearings and screws .

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12-29-2008 09:38 AM  8 years agoPost 14
OICU812

rrMaster

Edson, Alberta,​Canada

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chris, so is this one after or before the hub you mention? These guys are changing the hubs and tr blades so fast not sure no more, lol.

http://www.align.com.tw/shop/produc...roducts_id=2631

...Once upon a time there were Nitros, flybars and frequency pins...

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12-29-2008 10:09 AM  8 years agoPost 15
Heliguychris

rrKey Veteran

Perth, West​Australia

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Hi there OICU812, heres a couple of pics of one of the sets i waz sent out by Taiwa, which are the Aussie distributer, as a fix for the tail issue.... Looks like the difference is a washer LMAO .....
Ah well, noone likes Aligns choppers more than me, but im not blind to there faults,,, and theres a good example of one hehehehehe .....

Onya mate... HTH

Chris. :-)

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12-29-2008 04:14 PM  8 years agoPost 16
Hoverup

rrElite Veteran

Golden Gulf Coast -​USA

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If you having trouble with the 250 T/R just take another hit fom that bottle in your parts pic.

Cheers - Boyd
AMA 80393
IRCHA 3355
LSF 853
Major USAF
Retired

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T-REX 250 › New Tail Rotor Hub identification
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