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Old 07-30-2017, 01:54 PM   #1 (permalink)
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Default After one issue solved another pops up :(

So i believe the tail issues are gone for the most part. I have been able to put two flight on it today since getting and installing the replacement parts. The first flight felt fine. The heli is super light so didn't need to go out of IU2 (I use 3 IUs) which is at 70% on the HW.
Second flight felt fine for about a minute until I did one pitch pump and the HW hit lvc. This was on a fresh battery about 30 seconds in to my IU3 80%. As I landed I noticed the blades stopped spinning much faster than I've seen and as I picked the heli up I could feel the OWB seized as I wasn't able to hold the motor and spin the head CW.
Although the last flight was at the higher rpm it wasn't a hard flight as I was still Leary of the tail issues I recently had.
Before the question comes out YES, I did use plenty of grease on the OWB upon building the machine. Yes I did follow Scotts thread and yes the tail pulley is in the correct orientation (or I wouldn't have been able to lift off with the OWB being backwards).

As much as I want to love this model and I see it's potential I think it has it in for me...



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Old 07-30-2017, 02:29 PM   #2 (permalink)
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Dave,

When you get the new one-way clutch, wash all of the grease out of it and lube it with ATF. It smells terrible, but works great.

I learned this from the Dahl's, who put huge amounts of time on their machines.

I think this is in Scott's great build thread here on HF-I am looking for it right now.

Found it: https://www.helifreak.com/showthread.php?t=787877

Fairly far down in post #74.

Any time you change from one type of lubricant to another, it is extremely important to clean out any previous lubricant so that there are no surprises from a chemical reaction standpoint.
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Old 07-30-2017, 03:40 PM   #3 (permalink)
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All the years i have flown i have allways put a small drop of thin machine oil on my swash befor take my helis to the feald and some of it gets to the on way.
Did actually put a drop inside the onway befor assembeling it and i now have about 40 minutes of fligt time on mine and it have a 3,5KW motor on 12S without having any issues with the on-way.
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Old 07-31-2017, 12:13 AM   #4 (permalink)
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ATF on roller type clutches--it doesn't react with the plastic. Grease on Sprag type clutches. This is the way I've always done it.

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Old 07-31-2017, 07:51 AM   #5 (permalink)
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As I told Ah I used Align one way grease. I've used it in every machine I've owned and never had an issue.
If the grease they put in from the factory is substandard or conflicts with what most people use why don't they just leave it unlubricated?
ATF isn't something I have lying around but at this point if it works, it works


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Old 07-31-2017, 03:30 PM   #6 (permalink)
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Quote:
Originally Posted by DarkSyd3D View Post
As I told Ah I used Align one way grease. I've used it in every machine I've owned and never had an issue.
If the grease they put in from the factory is substandard or conflicts with what most people use why don't they just leave it unlubricated?
ATF isn't something I have lying around but at this point if it works, it works


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That's a question I can't answer. Buy a quart of Dexron III and you'll have enough for the rest of your life. You get it at AutoParts stores, Kmart, Walmart, any super store. It's easy. Try it, you'll like it.

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Old 07-31-2017, 05:43 PM   #7 (permalink)
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So I took the pulley out today and the inner sleeve was very tough to remove. As I finally got it out about half of the rollers and pieces of the cage came flying out. The inner sleeve is scored from the fragments.
I tried to remove the upper and lower bearings but because of the retaining compound I am not able to get them loose.
I've tried every trick I've heard of and they are in there for ever. To the point the pulley is now damaged 😕
I have emailed Steve at ERC with pictures. He has been great so far in getting the defective parts to me.

I have only had one OWB come apart on me ever. On a Trex 550 but that was something I didn't replace in a crash.
I haven't seen Align grease do this to a bearing lol. But I will use the ATF once the new parts come in


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Old 08-07-2017, 11:36 AM   #8 (permalink)
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.


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Old 08-07-2017, 08:00 PM   #9 (permalink)
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This is a definite issue. Contact Steve at ExperienceRC for replacement. It's not with the design, rather with the bearing. Compass in Germany knows about it. We have reported every issue we have seen. You're not going to be hung out to dry. We want you to have fun with your helicopter and having this happen is something we will fix.

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Old 08-07-2017, 09:33 PM   #10 (permalink)
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Quote:
Originally Posted by dunkonu23 View Post
This is a definite issue. Contact Steve at ExperienceRC for replacement. It's not with the design, rather with the bearing. Compass in Germany knows about it. We have reported every issue we have seen. You're not going to be hung out to dry. We want you to have fun with your helicopter and having this happen is something we will fix.

Scott


Yea, steve emailed me back today after his return from IRCHA. I'm not sure if he knows about it being an issue as he stated my issue was new to him.
But he is going to take care of me by the end of the week. Now I have time to get some ATF 😂
Do you know if what he is replacing the clutch with is the same or the revised version?


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Old 08-07-2017, 10:28 PM   #11 (permalink)
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Quote:
Originally Posted by DarkSyd3D View Post
Yea, steve emailed me back today after his return from IRCHA. I'm not sure if he knows about it being an issue as he stated my issue was new to him.
But he is going to take care of me by the end of the week. Now I have time to get some ATF 😂
Do you know if what he is replacing the clutch with is the same or the revised version?


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We believe it's a run issue. You will get a working OWB, though.

Scott
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Old 08-07-2017, 10:43 PM   #12 (permalink)
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Thank you sir


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