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130X Blade 130X Helicopters Information and Help


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Old 07-14-2012, 08:34 AM   #1
WBFAir
 
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Default Well got Bocas in my helo last night and tail res 100% gone.

You mileage may vary with this one but in my opinion, this whole thing of the spool up vib having anything to do with the TT parts is bunk.

Yesterday I got several bearings from Boca and just to mention, was told that using 1.2 wides for the 1.12 ones on the TT rod would fit and at least for the Bocas I got, and measured that they were true, they do not fit at all for either end as just to wide.

So as I had nothing else, I stuck my used HH ones back in

So next I installed as set of their 1.5x4x2 flanged bearings in the tail box, used the 440C ones PN: SMF681X-ZZ and first to mention, I found by my measurements that this bearing is about as directly the same in all sizing as the HH ones including the flanges, so no need to shim anything or worry about fit.

Next, once install and just checking statically it was abundant clear how much better these were over the HH ones, much much tighter.

But then yeah, upon spool up....just absolutely zero vib at any RPM, just simple none. And as well for about the 10 preceding flights, it never began to come back even slightly.

And remember too, I didn't change the TT ones and am also using the metal A gear.

The only thing I will add is I still have (or thought I had) vibs in flight. But I have tracked this down to gain vib as at 100% low, it completely goes away. And comes back a little more for each step up I go from that.

So guess I have to address that next, but without going into all the details I did to confirm this had nothing to do with bearings, it just simply has nothing to do with them and that for what issues the junk HH bearings were causing, using these has 100% fixed that.

So yeah, perhaps you don't have to go for the $$$ Bocas, although I would probably say the while I haven't seen the other options, given the fit and quality I have seen of these, might be a good place to spend the extra.

But again, while I obviously can't say what will happen for everyone else, if you are having vibs you think are bearing related, replace those HH ones in the tail box for the tail rotor, you won't regret it.

Hope that is helpful.
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Old 07-14-2012, 08:46 AM   #2
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I also got my flanged bearings from Boca, yesterday. I'm still waiting on my silicone o-rings from oringsandmore. We'll see how it goes once I get everything put back together.
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Old 07-14-2012, 08:49 AM   #3
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Yeah funny as after got this going, tried the GenAce 450's in it and was the first time (guess cause of weight) I got the body shakes a little.

Popped the extra canopy grommets on the swash and that got rid of those.

Have you tried that?
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Old 07-14-2012, 08:57 AM   #4
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Thanks for the info, I live near Boca and have ordered from them by phone, the guys there are very helpful.
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Old 07-14-2012, 08:59 AM   #5
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mine has the shudders on light decent, ineed to try the grommets.
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Old 07-14-2012, 09:17 AM   #6
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Originally Posted by WBFAir View Post
Yeah funny as after got this going, tried the GenAce 450's in it and was the first time (guess cause of weight) I got the body shakes a little.

Popped the extra canopy grommets on the swash and that got rid of those.

Have you tried that?
No. I'm going to wait for the silicone o-rings to show up. The canopy grommets tend to get brittle where the silicone o-ring stay pliable. I've waited this long to get it to fly right, what's a few more days?
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Old 07-14-2012, 09:20 AM   #7
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No. I'm going to wait for the silicone o-rings to show up. The canopy grommets tend to get brittle where the silicone o-ring stay pliable. I've waited this long to get it to fly right, what's a few more days?
Interesting, first bird I've had that this was needed so didn't know. If its not to much to ask Craig, if when you get them, you 100% know they fit and work good, could you let me know and know which ones they are and where you got them?
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Old 07-14-2012, 09:25 AM   #8
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mine has the shudders on light decent, ineed to try the grommets.
@Beebad I had the same issue on decent and the grommets did take care of that on mine pronto!

@WBFAir, thanks for the review of the bearings. Based on the part number it also looks like it's a stainless bearing, not ceramic so it will have some give in crashes. I know that others have used different suppliers at times and also the ones in the Walkera kits. To note, I have 1/2 a grommet on the tail rotor bell crank link too and it minimizes the correction vibrations from the AS3X so the tail doesn't shudder as much. I will have to try these bearings.

To note on these specific Boca bearings, it uses a strange configuration of synthetic grease - Kyodo SRL grease. This is a pure synthetic and it is actually fairly thick grease with a NLGI of 2.5 which is used on many precision items such as computer hard drives and medical pumps. My point is to not try and lubricate these with any other lubricant as this could wash out and cause the bearings to go dry.
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Old 07-14-2012, 09:33 AM   #9
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@Beebad I had the same issue on decent and the grommets did take care of that on mine pronto!

@WBFAir, thanks for the review of the bearings. Based on the part number it also looks like it's a stainless bearing, not ceramic so it will have some give in crashes. I know that others have used different suppliers at times and also the ones in the Walkera kits. To note, I have 1/2 a grommet on the tail rotor bell crank link too and it minimizes the correction vibrations from the AS3X so the tail doesn't shudder as much. I will have to try these bearings.

To note on these specific Boca bearings, it uses a strange configuration of synthetic grease - Kyodo SRL grease. This is a pure synthetic and it is actually fairly thick grease with a NLGI of 2.5 which is used on many precision items such as computer hard drives and medical pumps. My point is to not try and lubricate these with any other lubricant as this could wash out and cause the bearings to go dry.
Thanks for the info. Yeah as they do have this too, I definitely made the choice not to pic the ones that had anything in them that was ceramic. Probably might have been smoother bearing but no way would have lasted. Also went with the better grade SS as figured that would be best. Also liked that they were pre-lubed and sealed too as hopefully all that special grease will stay in there for a long time.

Was thinking with some of these other bearings that have been getting mentioned that I couldn't be sure of those last two points, so as I was with the Boca's, kinda also made it more of a attraction despite the cost.

Btw too and not that I care, but for this order, they also included a huge sheet of many sized stickers, as well as full size mouse pad that has printed on it, a inch to metric conversion chart as well as a chart of temp info per types of bearings they have.
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Old 07-14-2012, 09:35 AM   #10
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Interesting, first bird I've had that this was needed so didn't know. If its not to much to ask Craig, if when you get them, you 100% know they fit and work good, could you let me know and know which ones they are and where you got them?
We've been using the silicone o-rings on the mCPX conversions for a while now with great results. When I get them and they are correct, I'll send you a set. You have to order 50 at a time so I will plenty of extras.
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Old 07-14-2012, 09:37 AM   #11
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@WBFAir, To note, I have 1/2 a grommet on the tail rotor bell crank link too and it minimizes the correction vibrations from the AS3X so the tail doesn't shudder as much.
Just to ask GSPI, are you talking about the connection where the back tail rod link pops onto the ball of the swing arm?

Am just asking as like I wrote, I am now looking at this gain vib and wonder if that would help with this?
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Old 07-14-2012, 09:43 AM   #12
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Here's the silicone o-rings, that I already have, installed on the tail.


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Old 07-14-2012, 09:47 AM   #13
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We've been using the silicone o-rings on the mCPX conversions for a while now with great results. When I get them and they are correct, I'll send you a set. You have to order 50 at a time so I will plenty of extras.
Oh no here we go again...

That would be great Craig but this time I absolutely insist on giving you something for your time, the parts (with that many you have to spare maybe might (?) ask for a few) and the shipping!

Still think about you and feel a tiny bit guilty every time I break out the 450 Pro leveling rod you sent me for nothing.
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Old 07-14-2012, 10:12 AM   #14
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Put my Boca flangies in earlier in the week and had great results like the other reports. Walkera pitch slider should be here early next week. That should help reduce the slop and associated tail wag. O-rings are a good idea, but likely not enough to compensate for the large amount of slop in the stock pitch slider.

I measure roughly 20 degrees total throw side to side on the tail blades. The stock pitch slider allows up to 3 degrees of movement either way, or 6 degrees total.
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Old 07-14-2012, 10:43 AM   #15
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Here's the silicone o-rings, that I already have, installed on the tail.


Attachment 332035
I did this aswell, though did not think about doing it to the servo rod, I will do that now.. I have 001 and 002s from my mcpx, i used the 001s for the tail, what size would you suggest getting for the rest of the heli, what did u get? I paid 6.60 for 2 50 sets of different sized o rings, I can afford that again .. Do you guys r really set on these bearings? 25 dollars for a set of bearings seems kinda steep to me!
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Old 07-14-2012, 10:49 AM   #16
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Quote:
Originally Posted by NCcraig View Post
We've been using the silicone o-rings on the mCPX conversions for a while now with great results. When I get them and they are correct, I'll send you a set. You have to order 50 at a time so I will plenty of extras.
Craig I would be happy to buy a set from you if you wouldn't mind.
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Old 07-14-2012, 10:52 AM   #17
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Quote:
Originally Posted by NCcraig View Post
We've been using the silicone o-rings on the mCPX conversions for a while now with great results. When I get them and they are correct, I'll send you a set. You have to order 50 at a time so I will plenty of extras.
I would like to buy a set as well.
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Old 07-14-2012, 11:46 AM   #18
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Just to ask GSPI, are you talking about the connection where the back tail rod link pops onto the ball of the swing arm?

Am just asking as like I wrote, I am now looking at this gain vib and wonder if that would help with this?
Yes it is on the swing arm. I see that NCcraig did the same thing with those O-rings too.
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Old 07-14-2012, 12:36 PM   #19
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I want to order these but 26 bucks seems like a lot.
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Old 07-14-2012, 01:00 PM   #20
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I used 1/2 of an mcpx grommet on the tail pitch arm. Fits well.
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