Clutch bell runout - HeliFreak
Fun, Learning, Friendship and Mutual Respect START  HERE


Unregistered
Go Back   HeliFreak > R/C Helicopter Support > 600 Class Nitro Helicopters


600 Class Nitro Helicopters 600 Class Nitro Helicopters manufactured by Align, Tarot, SYMA, Airhog, Chaos, HK and similar.


Reply
 
LinkBack Thread Tools Display Modes
Old 09-25-2010, 03:59 PM   #1 (permalink)
Registered Users
 
Posts: 8,982
 

Join Date: Oct 2008
Location: Midland, MI - USA
Default Clutch bell runout

I saw somewhere on here that around .010 is a max value that shouldn't lead to performance problems for clutch bell runout. I just removed mine to reline the bell, and am looking at the assembly, and it appears as it rotates in the bearing block that it has around .015 or so. As I rotate it, the runnout appears to be in the pinion assembly. They both have runout together, almost as though the pinion assembly is bent. Is this really possible? I believe the clutch will true up and run pretty true when the clutch expands to mate the bell, but not sure it will cause vibrations with the starter shaft bearing assembly. I found this after the incident I had with it spooling up out of control on the ground. It shattered the main blades, but didn't seem to bend the main shaft or spindle. It didn't even bend the flybar.

Thoughts?
__________________
= Rb43 =
Rob43 is offline        Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 09-25-2010, 08:41 PM   #2 (permalink)
Registered Users
 
Posts: 4,606
 

Join Date: Feb 2007
Location: Houston
Default

all I've done is balance the fan hub and clutch...never worry about the bell. My bell actually deforms a little...probably due to clutch engagement. So as to run out, I don't worry about it since it appears to change, at least on my bird.
__________________
X-cell Fury 90: 601/9251, 8231's Cyc; DS650; OS 91MP-6; Jr Vibe 90; OS 91RJX Pipe; Jr 8231 cyclic, 770 3D/G8900, Prfct Reg. CCPM; T-Rex 600 NP: 6965HB, 425MG Throttle GY 520/9254; OS50 Hyper,MP-5, Prfct Reg; 600E Bstx, nue1910
seanh is offline        Reply With Quote Quick reply to this message
Old 09-25-2010, 09:17 PM   #3 (permalink)
Registered Users
 
Posts: 4,579
 

Join Date: Nov 2008
Location: Buffalo Area
Default

Check the clutch bearing housing, One of mine was worn causing excessive runout.
fastflyer20 is offline        Reply With Quote Quick reply to this message
Old 09-26-2010, 11:37 AM   #4 (permalink)
Registered Users
 
Posts: 8,982
Thread Starter Thread Starter
 

Join Date: Oct 2008
Location: Midland, MI - USA
Default

After cleaning the bell housing, and seeing this apparent runout, I dismantled the starter shaft, and loosened the housing to reseat the bearings and checked to see if simply reassembling the unit would make a difference. I no longer see the amount of runout I previously noted. When I first removed the shafter shaft, I could see the pinion and bell spun very true. Since the starter shaft has the drive lung which seats in the bearing at the top of the housing, it appeared that maybe my sharter shaft might have been bent. I didn't see any apparent problem with it, however. It all seems fine now.

Thanks!
__________________
= Rb43 =
Rob43 is offline        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