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12-29-2010 02:39 AM  6 years agoPost 1
ppridday

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Detroit Lakes MN

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I just finsihed putting together a Century metal tail case and was going to install it in a Condor boom but it is super tight. Tight enough that I will have to remove some ID boom material or OD of the tail case. I don't want to do that as for some reason the tail case seems to fit fine in my regular Pred 90/Gasser boom and also in a spare bent Condor boom. I thought I had read somewhere that there were some quality control issues with the dimensions of some of the Century booms. Do I slightly skim a bit of the ID out of this boom? Probably not more than removing the anodizing.

I have had the boom for more than a month now so sending back to Heli-World is a no go.

Thanks for any ideas....

Paul

"There's someone in my head, but it's not me..."

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12-30-2010 04:53 AM  6 years agoPost 2
windy62

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USA

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I have had the boom for more than a month now so sending back to Heli-World is a no go.
Why? They won't honor a factory defect after only a month?

I'd call 'em to be sure.

windy62

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12-30-2010 03:38 PM  6 years agoPost 3
ppridday

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Detroit Lakes MN

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I tried to return an item before and they said that their return policy was 7 days. This time to make sure everything was good, I had my wife open up the package and check the items. I even had her roll the boom on the countertop to make sure it was straight...

Paul

"There's someone in my head, but it's not me..."

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12-31-2010 03:26 AM  6 years agoPost 4
windy62

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USA

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they said that their return policy was 7 days.
Ouch..

A lot of guys here stock up on parts due to the hit and miss availability of parts from Century/Heli-world. That could hurt...

I would think a FACTORY defective part would have a longer warranty than 7 days...

windy62

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01-02-2011 01:37 AM  6 years agoPost 5
eeeeky

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Roosevelt UT USA

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Hello there. Can you please give me a few measurements? Shoot me the boom ID, and the metal box OD. Ill compare them to mine.

DSM racer

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01-02-2011 08:43 PM  6 years agoPost 6
ppridday

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Detroit Lakes MN

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I'll get the boom ID's this afternoon. My buddy has the tail case so will get that OD tonight.

Cheers,

Paul

"There's someone in my head, but it's not me..."

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01-02-2011 10:10 PM  6 years agoPost 7
ppridday

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Detroit Lakes MN

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OK, here we go...

Regular Predator Boom ID - 19.89mm
Old Condor Boom(Kinked NFG) - 19.55mm
New Condor Boom - 19.35mm

Metal tail box OD - 19.56mm

New Condor boom is about .2mm out. Doesn't sound like much but it will not allow the tailbox to slide in.

Cheers,

Paul

"There's someone in my head, but it's not me..."

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01-04-2011 05:11 AM  6 years agoPost 8
eeeeky

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Roosevelt UT USA

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Hmmm, id try taking the anodizing off, but not much farther. If you cant get that .2mm off, replace the boom.

DSM racer

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01-04-2011 11:15 AM  6 years agoPost 9
ppridday

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Detroit Lakes MN

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I may just contact Century to see if they'll replace it. Once I grind the anodizing off it is useless as a return... If they won't take it back I may try to fix it... Or just go back to the regular boom...

"There's someone in my head, but it's not me..."

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01-05-2011 11:34 PM  6 years agoPost 10
ppridday

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Detroit Lakes MN

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Alrighty... got word back from Century heli and the new Condor booms AND the regular heavy duty booms are thicker so the ID is slightly smaller. To use the metal tail box you have to sand off the .2mm from the boom I.D. Mystery solved...

Paul

"There's someone in my head, but it's not me..."

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01-06-2011 04:38 AM  6 years agoPost 11
windy62

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USA

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To use the metal tail box you have to sand off the .2mm from the boom I.D. Mystery solved...
That's wonderful!!

Why didn't they size the gearbox to fit the booms?

windy62

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01-06-2011 04:46 AM  6 years agoPost 12
ppridday

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Detroit Lakes MN

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The tailboxes I have are likely old stock and also it makes sense that it is easier to sand out .2mm from the boom ID than to take .2mm off the tailbox. Also if you ended up getting an old stock boom it would be slightly loose in that one. Possibly the new tailboxes are machined to take into account the new thicker booms.

Paul

"There's someone in my head, but it's not me..."

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01-06-2011 04:59 AM  6 years agoPost 13
Gearhead

rrMaster

Vt

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""Why didn't they size the gearbox to fit the booms?""

well I'm just guessing-> just guessing

A) that Century (like most Heli manufacturers) don't make the Tubing that is used for Booms,

note-> the Metal Tail Box does fit the Stock Boom,

B) and Century can't buy a Thicker Tubing that will have the same ID as the Stock Boom,

and,,
C) if thicker Tubing was made with the same ID as stock then it's OD will be larger than the stock Boom, so then the stock Fin Mount and Linkage Guides wouldn't fit..

Paul, find someone with a Lathe

Jim
Buzz Buzz Buzz

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01-06-2011 05:03 AM  6 years agoPost 14
eeeeky

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Roosevelt UT USA

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When the metal tailboxes were designed, it was used on the non HD booms, because the HD booms didnt exist yet. The Standard duty booms had a slightly larger ID. He has an HD boom, which has a thicker wall...The id is slightly, ever so slightly smaller.

DSM racer

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01-06-2011 05:17 AM  6 years agoPost 15
Gearhead

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Vt

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yes, and .2mm is only .007"

that's .0035 each side..

Jim
Buzz Buzz Buzz

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01-06-2011 04:03 PM  6 years agoPost 16
ppridday

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Detroit Lakes MN

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I think I'll try to sand the anodizing off the ID first. On something with that thin of a wall thckness it would be easy to distort in a lathe and then you could get an uneven ID cut. That would be bad.... Also in a lathe if you did not finish the ID with an internal taper you would create a stress riser in the exact spot you would not want one...

Paul

"There's someone in my head, but it's not me..."

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01-07-2011 12:17 AM  6 years agoPost 17
Gearhead

rrMaster

Vt

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that taper wouldn't be hard, sorry I can't do it for you, I let someone use my Bar 3 years ago and they broke it, I have had no real need to buy another..

Jim
Buzz Buzz Buzz

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01-07-2011 03:25 AM  6 years agoPost 18
ppridday

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Detroit Lakes MN

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No probs. Thanks for the offer. I will try the ID sanding method first and then chuck it up somewhere. I have a couple of ideas...

Cheers,

Paul

"There's someone in my head, but it's not me..."

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