Please select Into the mobile phone version | Continue to access the computer ver.
Do not over torque props!
1675 15 2015-11-13
Uploading and Loding Picture ...(0/1)
o(^-^)o
DJI-Dave
Captain

United States
Offline

An owner has identified a cracked hub on his Inspire 1, this is from over torquing the plastic hub onto the motor causing a slight stress crack resulting in the possibility of a thrown prop. Some owners were talking about reverting back to the old lock system. This is not necessary. Just do not over tighten.
Inspect before flight and keep spares on hand.
All spinning things need to be checked for wear. Plastic to metal parts should not be over tightened. Never use thread locker which is delayed death to plastic. Adding threadlock makes plastic brittle.
2015-11-13
Use props
juansantiuste
lvl.2

Spain
Offline

¿Are you talking abot QR props? In that case I can´t figure how can you overtighten them... It's just turn and click...  
2015-11-13
Use props
RichJ53
Captain
Flight distance : 1671171 ft
  • >>>
United States
Offline

juansantiuste Posted at 2015-11-13 20:51
¿Are you talking abot QR props? In that case I can´t figure how can you overtighten them... It's j ...

Dave is talking about the mounting hub plate into the top of the motor. Do not over tighten the two screws that hold the hub onto the motor...

I think I saw a torque valve for this Allen screw, but cant remember where.

Rich
2015-11-13
Use props
rbaaij
Second Officer
Flight distance : 59688 ft
United States
Offline

RichJ53 Posted at 2015-11-14 00:34
Dave is talking about the mounting hub plate into the top of the motor. Do not over tighten the tw ...

Between 0.5 and 0.8 Nm
2015-11-14
Use props
DJI-Dave
Captain

United States
Offline

Yep that is what I was talking about. Thank you for clarifying that Rich.
2015-11-14
Use props
RichJ53
Captain
Flight distance : 1671171 ft
  • >>>
United States
Offline

rbaaij Posted at 2015-11-14 08:14
Between 0.5 and 0.8 Nm


rbaaij

I have a torque wrench by Vario Helicopters that has the different Allen sizes 3mm 4mm etc.  I think that is pretty slick. It is a torsion bar style wrench and no way to overtighten the screws using this tool. They do not offer it anymore... man I am old..

Link to similar:

http://www.amazon.com/dp/B00XKIIKOM?psc=1



fancy one :

http://www.amazon.com/BIKEHAND-B ... torque+wrench+allen


I am sure there are others on the market that have a similar tool:




Rich
2015-11-14
Use props
rbaaij
Second Officer
Flight distance : 59688 ft
United States
Offline


RichJ53 Posted at 2015-11-14 18:28
rbaaij

I have a torque wrench by Vario Helicopters that has the different Allen sizes 3mm 4mm etc ...

Hi Rich,
WIHA has a Preset "easy torque" Economy Torque driver.
Robert
Screen Shot 2015-11-14 at 8_Fotor.jpg
2015-11-14
Use props
vonbaron1
Second Officer
Flight distance : 42014 ft
Canada
Offline

Rick,     I have one of those fancy ones that works great but used it on my 3/4 P-51 on the top intake cover.   Low torque and it sure did the job.
2015-11-14
Use props
RichJ53
Captain
Flight distance : 1671171 ft
  • >>>
United States
Offline

rbaaij Posted at 2015-11-14 17:42
Hi Rich,
WIHA has a Preset "easy torque" Economy Torque driver.
Robert

Wiha makes nice tools and I one of the larger sets from my 700 size Helicopter days.  I guess this is a good way to go, but I like the adjustable type that you can use over a wide range of projects...

thanks for the share

Rich
2015-11-14
Use props
RichJ53
Captain
Flight distance : 1671171 ft
  • >>>
United States
Offline

vonbaron1 Posted at 2015-11-14 19:13
Rick,     I have one of those fancy ones that works great but used it on my 3/4 P-51 on the top inta ...


These tools are a great investment, because they come in handy for many of your aircraft projects...

check this one out


http://www.wihatools.com/200seri/288_iTorque.htm


Rich
2015-11-14
Use props
DJI-Tim
DJI team

Hong Kong
Offline

Good reminder, Dave! Thanks for sharing with everyone{:3_52:}
2015-11-15
Use props
DJI-Dave
Captain

United States
Offline

DJI-Tim Posted at 2015-11-15 19:03
Good reminder, Dave! Thanks for sharing with everyone

Thanks!!
2015-11-16
Use props
mtnmaddman
Second Officer

United States
Offline

rbaaij Posted at 2015-11-14 18:42
Hi Rich,
WIHA has a Preset "easy torque" Economy Torque driver.
Robert

might want to check these out http://www.ebay.com/itm/MOUNTZ-2 ... e6kaD9sqByxlc1dbY4g
2015-11-16
Use props
mtnmaddman
Second Officer

United States
Offline

RichJ53 Posted at 2015-11-14 16:28
rbaaij

I have a torque wrench by Vario Helicopters that has the different Allen sizes 3mm 4mm etc ...

Arent those too strong check out the adjustable on ebay I posted link above  these fall in the range

I ordered one I will probably set it at about 100 oz in. thats about .7 Nm I believe  .65Nm woulbe about 93 oz. in. f
2015-11-16
Use props
mtnmaddman
Second Officer

United States
Offline

Dave
I assume Roberts .5 to .8 Nm is correct.  What do you torque too and what do you use.  Please check my link , do you think that the driver I posted will work okay, Also I am just a bit leery of the QR system I have had no trouble though, I have over a hundred flights on my first set of props,  I just threw them away and went to the second set of props, I have not changed the adapters yet though I did re tension the springs a bit.  Will there be an upgrade for the original I1 soon. I would like to feel a bit more secure with the prop lock system. what is your opinion of the new system on the ver 2 compared to this system.  And can we expect an upgrade soon. and do you recommend finger nail polish on the threads       Joe
2015-11-16
Use props
RichJ53
Captain
Flight distance : 1671171 ft
  • >>>
United States
Offline

mtnmaddman Posted at 2015-11-16 13:40
Arent those too strong check out the adjustable on ebay I posted link above  these fall in the rang ...

I believe you are correct that the wrench is not in the range needed but an example never the less.  You will need to look at the spec's more closely than I did.

0.8 newton meter = 7.080 596 614 1 pound inch

Rich
2015-11-16
Use props
Advanced
You need to log in before you can reply Login | Register now

Credit Rules