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HelicopterThunder TigerRAPTOR 90 › 90 TT Metal tail?
09-11-2007 12:14 PM  10 years agoPost 1
MJHiscott92504

rrVeteran

James Hiscott ,​Germany for past 11​months

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Does anyone make a full metal tail for the TT Raptor 90?

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09-11-2007 12:28 PM  10 years agoPost 2
garry keogh

rrApprentice

Wicklow, Ireland

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Quick UK make a very nice metal tail

You should have a look at http://www.quickuk.co.uk They have a very good tail for the Raptor 90.

It has a stainless steel hub that does not use the long grub-screws and nyloc nuts to hold the bearings. Instead it has a high tensile allen screw into the hub purely retaining the bearings. It uses solid metal blade grips machined from aero-grade aluninium in one operation and is fitted with thrust bearings. FYI the standard blade grip assembly operates the radial bearinigs outside their design specification without a thrust race.
This assembly is very tough and will not explode like the TT original

Hope this helps?

Garry

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09-11-2007 01:08 PM  10 years agoPost 3
Ben-T-Spindle

rrProfessor

Central Illinois

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I have a Kasama tail on mine – it has much slop than the QUK metal tail.
http://www.z-rc.com/?action=display...e&viewItemID=35

... BTS

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09-11-2007 05:55 PM  10 years agoPost 4
garry keogh

rrApprentice

Wicklow, Ireland

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BTS

The amount of backlash in the radial bearings when the tail is stationary is not of huge relevance as there is very considerable force carried by the thrust races when the tail is turning.

The way that the loads are carried in operation, the thrust load is transferred from the hub through the thrust races which bear only on the outside races of the radial bearings. These outside races carry the thrust caused by the centrifugal force of the spinning grip. The backlash you feel is the acceptable tolerance of the radial bearings. The bearings are designed to support a radial load, not a torque or twisting of inside race versus outside race. This twisting of the races is what you describe as slop. The backlash is not present when the tail is turning at full speed. Even if you pull lightly on the grip, you will see that it is quite stable... just imagine how much force is on this bearing stack at 8,800rpm or so on your Raptor 90.

I have two of the QUK tails and they both work superbly, setup easily on the gyro and I have the peace of mind that they will not throw a grip/blade.

We the cosumer has a choice however. I am happy with my QUK and I have no doubt you're happy with the Kasama.

Garry

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09-12-2007 02:11 AM  10 years agoPost 5
MJHiscott92504

rrVeteran

James Hiscott ,​Germany for past 11​months

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More

I wish some one would make the entire tail from billet aluminum like my 600N Align has.....That would be perfect

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09-12-2007 03:44 AM  10 years agoPost 6
nojohnny101

rrElite Veteran

10 miles north of​Cincy, OHIO

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hey
EDIT....sorry thought you were talking about Raptor 50

Thanks
~Will-i-am~

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