Thread Lock




homer911

Member
It states in the Droidworx frame manual to use thread lock on a lot of the screws. I think it mentions to use it in the motor mounts aswel.
 

homer911

Member
Go for green or purple Tlock...not nail polish!
What are you wanting to use it for?, I dont use any on my Mrotors

I just found this on Wiki.

Purple is the least strength and green is the strongest. I dont think I will need 310 in-lb torque strength. Dont think I will be able to get the screws out : )

<dl style="margin-top: 0.2em; margin-bottom: 0.5em; "><dd style="line-height: 1.5em; margin-left: 1.6em; margin-bottom: 0.1em; margin-right: 0px; ">
Low strengthpurple62 in-lb (7 N-m)27 in-lb (3 N-m)−54 to 149 °C
Medium strengthblue115 in-lb (12 N-m)53 in-lb (6 N-m)−54 to 149 °C
Medium strength surface insensitiveblue180 in-lb (20 N-m)62 in-lb (7 N-m)−54 to 149 °C
High strengthred230 in-lb (25 N-m)225 in-lb (25 N-m)−54 to 149 °C
High temperaturered180 in-lb (20 N-m)270 in-lb (30 N-m)−54 to 232 °C
Penetratinggreen90 in-lb (10 N-m)310 in-lb (35 N-m)−54 to 149 °C

<tbody>
<th style="border-top-width: 1px; border-right-width: 1px; border-bottom-width: 1px; border-left-width: 1px; border-top-color: rgb(170, 170, 170); border-right-color: rgb(170, 170, 170); border-bottom-color: rgb(170, 170, 170); border-left-color: rgb(170, 170, 170); border-top-style: solid; border-right-style: solid; border-bottom-style: solid; border-left-style: solid; border-image: initial; padding-top: 0.2em; padding-right: 0.2em; padding-bottom: 0.2em; padding-left: 0.2em; background-color: rgb(242, 242, 242); text-align: center; ">Type</th><th style="border-top-width: 1px; border-right-width: 1px; border-bottom-width: 1px; border-left-width: 1px; border-top-color: rgb(170, 170, 170); border-right-color: rgb(170, 170, 170); border-bottom-color: rgb(170, 170, 170); border-left-color: rgb(170, 170, 170); border-top-style: solid; border-right-style: solid; border-bottom-style: solid; border-left-style: solid; border-image: initial; padding-top: 0.2em; padding-right: 0.2em; padding-bottom: 0.2em; padding-left: 0.2em; background-color: rgb(242, 242, 242); text-align: center; ">Typical color-code</th><th style="border-top-width: 1px; border-right-width: 1px; border-bottom-width: 1px; border-left-width: 1px; border-top-color: rgb(170, 170, 170); border-right-color: rgb(170, 170, 170); border-bottom-color: rgb(170, 170, 170); border-left-color: rgb(170, 170, 170); border-top-style: solid; border-right-style: solid; border-bottom-style: solid; border-left-style: solid; border-image: initial; padding-top: 0.2em; padding-right: 0.2em; padding-bottom: 0.2em; padding-left: 0.2em; background-color: rgb(242, 242, 242); text-align: center; ">Torque to break free</th><th style="border-top-width: 1px; border-right-width: 1px; border-bottom-width: 1px; border-left-width: 1px; border-top-color: rgb(170, 170, 170); border-right-color: rgb(170, 170, 170); border-bottom-color: rgb(170, 170, 170); border-left-color: rgb(170, 170, 170); border-top-style: solid; border-right-style: solid; border-bottom-style: solid; border-left-style: solid; border-image: initial; padding-top: 0.2em; padding-right: 0.2em; padding-bottom: 0.2em; padding-left: 0.2em; background-color: rgb(242, 242, 242); text-align: center; ">Torque to continue turning</th><th style="border-top-width: 1px; border-right-width: 1px; border-bottom-width: 1px; border-left-width: 1px; border-top-color: rgb(170, 170, 170); border-right-color: rgb(170, 170, 170); border-bottom-color: rgb(170, 170, 170); border-left-color: rgb(170, 170, 170); border-top-style: solid; border-right-style: solid; border-bottom-style: solid; border-left-style: solid; border-image: initial; padding-top: 0.2em; padding-right: 0.2em; padding-bottom: 0.2em; padding-left: 0.2em; background-color: rgb(242, 242, 242); text-align: center; ">Temperature range</th>
</tbody>
</dd></dl>[h=2][edit]

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kloner

Aerial DP
blue is the normal threadlock. comes off without heat and holds really well.

green is usually a shaft to bearing collar material so shafts don't spin inside the collar. red is way overkill, takes a lot of heat to soften it enough to remove

liquid version is best, put a small dab onto a piece of tape on a table and dab a toothpick to apply with, helps control it, doesn't take much
 

yeehaanow

Member
DON'T use green on prop nuts! It builds up as you unscrew and makes it nearly impossible to get off. I bent a shaft getting one off!
I use blue all the way around.
 

jes1111

Active Member
Be very careful around plastics, though - many threadlockers will attack many plastics. If in doubt, ring the helpline at the nearest Henkel office (01442 278100 for you in UK) - those guys really know their stuff.
 

WillM

Member
The type of thread lock to use totally depends upon the application, including the desired bond strength, the equipment's operating temperature range, the diameter of the bolts, and when in the assembly process you apply the thread lock.

Generally speaking, blue thread lockers are medium strength and red thread lockers are high strength. That said, there are many different varieties of each. For the majority of hobby-related projects, #242 is a good choice. This is one of the varieties that comes in blue (medium strength). It holds well, is suitable for typical R/C temperatures, and is removable. For lower bond strength, #222 would be a good choice (low strength). Keep in mind that if you ever want to remove the bolt, you'll need to overcome the bond strength of the thread lock. For small, cheaply-made bolts, you could easily strip the head before the bolt comes out, which creates a whole other type of problem.

Use it sparingly and keep it away from plastics.

McMaster-Carr is a great source of information and a fantastic place to make purchases. Every single order I've placed with McMaster before 7PM has been delivered to my office first thing the next morning. It is as if they have trucks driving around the neighborhood full of product!

http://www.mcmaster.com/#threadlockers/=gruqtb

Disclaimer: I'm not an expert or engineer, and certainly don't pretend to be one on the internet. :)
 
Last edited by a moderator:

ghaynes

Member
Loctite 222 Purple Low Strength is what was recommended for my Cinestar. Didn't find it locally but available on Amazon. Anything stronger is tough to un bolt something with the small screw sizes we are dealing with (3mm). Agree about not using it on plastics unless you test it first.
 

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