Fan Shroud warps. - HeliFreak
Fun, Learning, Friendship and Mutual Respect START  HERE


Unregistered
Go Back   HeliFreak > R/C Helicopter Support > Gaui Helicopters > NX7


NX7 Discussion and support of the Gaui NX7


Reply
 
LinkBack Thread Tools Display Modes
Old 11-19-2015, 10:39 AM   #1 (permalink)
Registered Users
 
Posts: 836
 

Join Date: May 2014
Location: Denver
Default Fan Shroud warps.

Hi guys, is there any way to prevent the fan shroud from warping over time which causes the fan to rub on it. It warps towards the inside around the top opening. This is the 2nd time I've had to replace both. On the last shroud install, I put a little scotch tape around the metal inserts in the shroud. This time I'll put more tape around the inserts so they are very tight.

Is it fuel, oil, and a little heat that causes the warping?
__________________
Logo 700, Gaui NX7, Gaui X5 Formula Stretch, all VBAR
VControl, DX9, DX7s
RealFlight 7.5
C #773
Heli$ is offline        Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 11-19-2015, 11:06 AM   #2 (permalink)
Registered Users
 
Posts: 706
 

Join Date: Oct 2004
Location: Mesa, AZ
Default

First time I have heard of that. I am still running my original 68 gallons worth...I will look into this.
__________________
JC Zankl
Empire Hobby/GAUI,PowerMaster Fuels/YS Engines/Graupner Radios/Scorpion Power Systems/Castle Creations/SpinBlades/Bavarian Demon/Velos Rotors
jczankl is offline        Reply With Quote Quick reply to this message
Old 11-19-2015, 12:27 PM   #3 (permalink)
Registered Users
 
Posts: 836
Thread Starter Thread Starter
 

Join Date: May 2014
Location: Denver
Default

Thanks for the quick response JC. Here's a pic of where it rubs the fan. The last fan that did this was runs all the way around.
Attached Thumbnails
Click image for larger version

Name:	image.jpg
Views:	122
Size:	47.6 KB
ID:	620312  
__________________
Logo 700, Gaui NX7, Gaui X5 Formula Stretch, all VBAR
VControl, DX9, DX7s
RealFlight 7.5
C #773
Heli$ is offline        Reply With Quote Quick reply to this message
Old 11-19-2015, 01:29 PM   #4 (permalink)
Registered Users
 
Posts: 706
 

Join Date: Oct 2004
Location: Mesa, AZ
Default

Wow interesting, Can you send me some photos of the fan shroud itself to jc@empirerc.com
__________________
JC Zankl
Empire Hobby/GAUI,PowerMaster Fuels/YS Engines/Graupner Radios/Scorpion Power Systems/Castle Creations/SpinBlades/Bavarian Demon/Velos Rotors
jczankl is offline        Reply With Quote Quick reply to this message
Old 11-19-2015, 01:50 PM   #5 (permalink)
Registered Users
 
Posts: 836
Thread Starter Thread Starter
 

Join Date: May 2014
Location: Denver
Default

Ok, here is a pic of the inside of the shroud where the fan was rubbing.
Attached Thumbnails
Click image for larger version

Name:	image.jpg
Views:	112
Size:	40.1 KB
ID:	620319  
__________________
Logo 700, Gaui NX7, Gaui X5 Formula Stretch, all VBAR
VControl, DX9, DX7s
RealFlight 7.5
C #773
Heli$ is offline        Reply With Quote Quick reply to this message
Old 11-19-2015, 01:52 PM   #6 (permalink)
Registered Users
 
Posts: 836
Thread Starter Thread Starter
 

Join Date: May 2014
Location: Denver
Default

Here is a pic of the top shroud. It looks like it curves down in the opening.
Attached Thumbnails
Click image for larger version

Name:	image.jpg
Views:	115
Size:	38.1 KB
ID:	620320  
__________________
Logo 700, Gaui NX7, Gaui X5 Formula Stretch, all VBAR
VControl, DX9, DX7s
RealFlight 7.5
C #773
Heli$ is offline        Reply With Quote Quick reply to this message
Old 11-21-2015, 09:39 AM   #7 (permalink)
Registered Users
 
Posts: 4,624
 

Join Date: Nov 2011
Location: slidell, LA
Default

to be honest, every nitro heli ive ever owned has done that. mine are 100x worse. but once clearenced by the fan, doesnt rub anymore.
__________________

Empire Hobby/ Team Gaui USA -- Rcbearings.com
-- Cyclone Blades -- Team KDE -- A-Main Hobbies -- OMG servos
dodgeboy is offline        Reply With Quote Quick reply to this message
Old 06-05-2017, 08:04 PM   #8 (permalink)
Registered Users
 
Posts: 1,704
 
My HF Map location
Join Date: Jul 2009
Location: Colorado
Default

I'm building a NX7 since last summer and I finally got a chance to get it running yesterday.

Anyway... long story short, my plastic fan melted to the plastic shroud from rubbing. I knew it was rubbing, but thought it would break in like these other instances. It melted together so well that it would not allow the engine to turn. The engine only idled for 2-3 minutes.

FYI - This is a previously owned heli.

Think that as the plastic ages it may warp over time, but I noticed it rubbed for the previous owner.

Oh well, gonna order a new fan and shroud.
Anthony440 is online now        Reply With Quote Quick reply to this message
Reply




Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the HeliFreak forums, you must first register.
Please enter your desired user name, your REAL and WORKING email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself. Use a real email address or you will not be granted access to the site. Thank you.
Email Address:
Location
Where do you live? ie: Country, State, City or General Geographic Location please.
Name and Lastname
Enter name and last name here. (This information is not shown to the general public. Optional)
Helicopter #1
Enter Helicopter #1 type and equipment.
Insurance
Please select your insurance company (Optional)
Helicopter #2
Enter Helicopter #2 type and equipment.
Helicopter #3
Enter Helicopter #3 type and equipment.
Helicopter #4
Enter Helicopter #4 type and equipment.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On




Copyright © VerticalScope Inc. All rights reserved.
 

SEO by vBSEO 3.6.1