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Synergy Electric Helicopters => Synergy E5 => Topic started by: Helikid42 on October 25, 2017, 09:54:49 PM

Title: E5 TORQUE TUBE BUILD
Post by: Helikid42 on October 25, 2017, 09:54:49 PM
I have tried building the E5 torque tube per manual but always ruin the radial bearings when slowly sliding them over the ca glue! The original tt was ruined due to radial bearings getting ca in them, then I purchased a second tt and it happened again! This will be my 3rd and final attempt and I sure hope anyone can help with this costly situation I am dealing with. I am almost certain it is the glue I am applying..super thin. Maybe I should use a thicker ca or 5min appoxy? Thanks to all on this topic.
Title: Re: E5 TORQUE TUBE BUILD
Post by: curmudgeon on October 25, 2017, 11:09:45 PM
If you want to continue using thin CA, I recommend you first place the radial bearings where you want then on the TT.  Then apply the thin CA to the TT close to the bearing one small drop at a time using a toothpick.  So apply the drop of thin CA directly to the tip of the toothpick, and then bring that drop of CA to the TT close to the bearing.  The CA will wick "underneath" the inner race of the bearing.  You do not need much CA to secure the bearings to the TT.
Title: Re: E5 TORQUE TUBE BUILD
Post by: cml001 on October 26, 2017, 05:49:54 AM
My method... measure & mark bearing placement w a sharpie... slide bearing on the TT close to placement.. apply Ca to placement area & rotate TT while using a tooth pick or small piece of paper make an eveníish layer of the CA... holding the TT vertical, slide the bearing down in the marked placement area SLOWLY making sure the CA doesnít build up into the race of the bearing. Biggest thing is to just keep an eye on the CA so it doesnít get in the bearing.. once itís in place & the bearing is sticking.. just prop it up so any CA still flowning can not flow in the bearing.
Title: Re: E5 TORQUE TUBE BUILD
Post by: gwright on October 26, 2017, 12:48:23 PM
"flowning"?
Title: Re: E5 TORQUE TUBE BUILD
Post by: gwright on October 26, 2017, 12:59:10 PM
As clay and others said, it only takes a TINY bit of ca.  I put a SMALL drop on, then use a piece of paper towel and rotate the tube, removing most of the ca but spreading whats left around the tube, then slip the bearing back down the 1/4 inch or so that I slid it out of the way.  Almost instantly sets off the ca, and there wasn't enough ca left on the tube to flow into the bearing
Title: Re: E5 TORQUE TUBE BUILD
Post by: cml001 on October 26, 2017, 08:36:54 PM
Lol, Gary.. flowing... thanks! Lol.. hadnít finished my coffee when I responded.. lol.
Title: Re: E5 TORQUE TUBE BUILD
Post by: gwright on November 02, 2017, 08:58:53 AM
obvious of course, but you know I couldn't let that slide :)
Title: Re: E5 TORQUE TUBE BUILD
Post by: Ryusadoms on November 03, 2017, 03:27:57 AM
I like this way of thinking is very high.
Title: Re: E5 TORQUE TUBE BUILD
Post by: larry v on November 04, 2017, 12:51:23 PM
So why CA and not red Loctite like the manual says or even green Loctite for that matter?
Title: Re: E5 TORQUE TUBE BUILD
Post by: FrankFuss on November 04, 2017, 02:18:23 PM
So why CA and not red Loctite like the manual says or even green Loctite for that matter?
Manual says to secure bearings with red Loctite or CA.
Title: Re: E5 TORQUE TUBE BUILD
Post by: larry v on November 04, 2017, 03:06:08 PM
true it does. Im about to put mine together and was wondering what the benefit of ca might be. I seems that that is what most people use. It seems to me that Loctite would hold better.
Title: Re: E5 TORQUE TUBE BUILD
Post by: cml001 on November 04, 2017, 07:15:38 PM
CA or Loctite.. ur preference. The red & green Loctite will take longer to cure.. cleaning the areas of contact is a must prior to using any of these products... please note that most commonly I see the thin, wicking variation of green Loctite.. having said that, be VERY careful not to allow it to wick into the bearing... if it does, there is no turning back... it will seize the bearing. My first few builds I used CA.. then tried the green Loctite on one build and botched it.. I have reverted to using CA personally.. it seems the easiest route for me. Bottom line is that itís ur preference, but all work well if done properly.
There is another method that was explained to me where guys are also placing a pieces of heat shrink on either side of the bearing in addition to CA/Loctite. I havenít found a need for this.. but itís an option I suppose.
Title: Re: E5 TORQUE TUBE BUILD
Post by: larry v on November 06, 2017, 01:48:06 PM
Sorry Helikid I don't mean to hijack your thread.

Is there a particular CA that most people like to use? Other than the Loctite, I have bsi gap filling medium insta cure CA on hand. Would this be adequate?
Title: Re: E5 TORQUE TUBE BUILD
Post by: FrankFuss on November 08, 2017, 11:09:59 AM
That is the CA I have used in the past successfully on other torque tubes.  However for my E5SS I plan on using Loctite 648 retaining compound, because it will be easier to work with.  I will have to leave it cure overnight, but I can reposition the bearing or start over if necessary.  Also, if I don't use too much, there is less chance of it wicking into the bearing.
Title: Re: E5 TORQUE TUBE BUILD
Post by: Gabriel Sandoval on November 08, 2017, 12:27:05 PM
personally i used the heat shrink tube with adhesive inside. Set bearings where you want them and the heatshrink will lock the bearing in place as a little adhesive will ooze out the ends which will lock the bearing inner race. Works slick and it's fast no waiting for loctite to cure. 8)
Title: Re: E5 TORQUE TUBE BUILD
Post by: curmudgeon on November 08, 2017, 12:45:11 PM
Please provide a weblink with the proper size adhesive heat shrink. 
Title: Re: E5 TORQUE TUBE BUILD
Post by: FrankFuss on November 12, 2017, 02:08:19 PM
Please provide a weblink with the proper size adhesive heat shrink.
I just ran across this source of Adhesive-Lined Heat Shrink.  They also sell other good stuff.

https://www.cabletiesplus.com/Departments/Heat-Shrink-Tubing/Adhesive-Lined-Flexible-Polyolefin.aspx (https://www.cabletiesplus.com/Departments/Heat-Shrink-Tubing/Adhesive-Lined-Flexible-Polyolefin.aspx)