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04-12-2014, 10:30 PM | #21 (permalink) |
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Join Date: Aug 2011
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TT
The alcohol trick is the best way to do it once they are in place they don't budge !!! I use that for all my TT assemblies and I have never had a problem .
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03-07-2015, 07:25 PM | #22 (permalink) |
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Join Date: Mar 2008
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I'd rather jack off with sand paper than squeeze that damn tt in the boom.
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03-17-2015, 12:28 PM | #23 (permalink) |
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Join Date: Oct 2014
Location: Texas
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I'm having the same problem trying to jam the torque tube with the bearings into the boom. Is there a legitimate reason the fitment is so tight or is it crappy engineering/manufacturing? I tried both the alcohol and astro-glide trick last night, but still couldn't get the damn thing in there! Tonight I'll try the dremel tool trick from GimpyGolden to sand down some of the rubber damper. Would it kill them to make the damper easier to install (i.e. smaller)??
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03-20-2015, 08:17 AM | #24 (permalink) |
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I just did the TT on my 7.2 and they're snug too. This time I did no sanding but used my trusty MolyKote 33 and once I got the Damper in the boom it slid home no problem.
Love this stuff, good for gears, spindles and now installing TT dampers. http://www.amazon.com/s/ref=nb_sb_no...ds=molykote+33
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03-23-2015, 08:21 AM | #25 (permalink) |
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Join Date: Sep 2012
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Ive fought with this myself, Ive tryed many ways on how to get the TT in the boom...so i find this works for me...
I epoxy the bearing on and let them set for awhile after that i reach for the TRI-FLOW give the boom a lube job then i lube up the dampers, now on both sides of the damper their are ridges that are a lil more bigger then the boom it self so lube up the dampers and get the first ridge in and with you thumbs push the 2nd ridge down and in, do the same thing with the other two dampers works every time and its clean they wont get pushed off the bearing...good old TRI-FLOW
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03-23-2015, 10:56 AM | #26 (permalink) |
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Join Date: Oct 2014
Location: Texas
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I finally got it, but dang......can't they design a better part? This was disappointing on a kit so expensive, and touted to be such high quality. Never the less, I'm still looking forward to flying it.
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The end won't be for everyone. The choice, to know, will be yours. |
03-31-2015, 09:35 AM | #27 (permalink) |
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Join Date: Dec 2014
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I used some silicone oil, alot of swearing and quite alot of shoving to get the 3 bearings into my TT without the rubber slipping off the bearings. It took me a good 5 hours and left my hands bruised
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KDS Chase 360 // Agile 5.5 // Agile 7.2 SAB Goblin 380 // 630 |
03-31-2015, 04:02 PM | #28 (permalink) |
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Really, 5Hrs?
I did my 5.5 yesterday with the MolyKote 33 and got both bearings in on the first try. And I'm a cripple. Didn't sand the rubbers down or anything.
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03-31-2015, 08:37 PM | #29 (permalink) | |
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Join Date: Aug 2011
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Quote:
which is a pain in the arse! I got my 7.2 and it had a weird vibe. Tore down the tail and I found that the rubbers had halfway slid off when he installed the boom. I pulled it all, soaked the rubbers with silicone oil, then swabbed the boom. Slowly, carefully and evenly applied pressure until they all slid into the boom and then just pushed the TT where it needed to be. No real drama, 10 minutes maybe. I mean, they were pretty tight but they weren't impossible to fit |
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03-31-2015, 11:32 PM | #30 (permalink) |
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Join Date: Dec 2014
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yes 5 hours, my agile 5.5 took me 5 minutes. not the 7.2 though.. the 3 stupid bearings kept taking turns having their rubber sleeves pop out while pushing them in real slow.. Then a friend ripped one of them and i had to wait a couple of hours for spares. What i've learnt from it : don't listen to everything everyone says and lube only the outside of the rubber.. if it gets into the inside its just gonna keep slipping off the bearing everytime you push it in.
And to note the difference between the 5.5 and 7.2 - that one extra bearing really does give you a hell of a time. Try it, you'll know what i mean.
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KDS Chase 360 // Agile 5.5 // Agile 7.2 SAB Goblin 380 // 630 |
04-01-2015, 08:36 AM | #31 (permalink) | ||
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Quote:
https://www.helifreak.com/showthread.php?t=561993 Agree,little lube on the rubbers and some in the end of the boom and you'll get er in. Quote:
Next time maybe try a light grease and also grease the end of the boom fingers length in at least. I hope you get a method down that works for you cause that sounds pretty frustrating. Hmmmm maybe a good topic for a Team Tip vid... I'll get on that soon.
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04-01-2015, 10:49 PM | #32 (permalink) |
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Join Date: Dec 2014
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I found that greasing the inside of the tube down and the edges of the rubbers helped most, just avoid having any lubricant getting into the inside where the rubber sits into the bearing. As for pushing it in, you'll have to apply even pressure as you nudge the bearings into the tube .. slowly. I was rushing it and kept popping the rubber out of the bearings... lesson learnt.
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KDS Chase 360 // Agile 5.5 // Agile 7.2 SAB Goblin 380 // 630 |
04-04-2015, 06:55 AM | #33 (permalink) |
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Join Date: Jun 2010
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I am thinking about getting me a kit but is it not only to get a wood stick just thinner then the ID of the boom and push them in ?
The you should get even preasure on the sleeves and no preasure on the bearings. Btw i love how the MD Helis have pre mounted all bearings in the booms, had been great if more providers did that.
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04-04-2015, 07:52 AM | #34 (permalink) |
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You could do that I am sure but manual specifies epoxying the bearings to the shaft.
Could be the only reason for that is to facilitate installation. Next time I build one up I'll try your suggested method and see if there are and 'side effects'. Hopefully it isn't for a while cause that'll mean I dumped it Maybe I'll take one for the team, buy the bit's and build up a spare boom w/ TT ready to go. Not like I'll never need it.
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04-19-2015, 10:02 PM | #35 (permalink) |
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Join Date: Jul 2004
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I take the tube the torque tube plastic case that it comes in, I have marked at the three distances put a little lube on the rubber bearing mounts fit them in the boom by hand first then slide them down with the tube to the marks on it. then slide torque tube in glue ends and pin in and your done. this was the suggestion of one of our team members and did 4 booms like that this week. I have also done that in the past on other helis.
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