Fun, Learning, Friendship and Mutual Respect START  HERE


Unregistered
Go Back   HeliFreak > R/C Helicopter Support > KDS Helicopters General Discussion > KDS Agile 7.2


KDS Agile 7.2 KDS Agile 7.2 Discussion


Reply
 
LinkBack Thread Tools Display Modes
Old 12-09-2019, 01:41 AM   #1 (permalink)
Registered Users
 

Join Date: Apr 2004
Default 7.2 one way alternative

I had to replace the one way on my 7.2. So I thought that maybe the the new A7 one way would work.
The A7 has the OWB on the intermediate shaft. Seems like a better place. After a little fussing I was able to get it to work.
If anyone else is interested heís some pics.


Had to turn the shaft down to 10mm. Then remove the dust shields on the old OWB and pack it with JB weld.

Itís very smooth now and has been holding strong.
Brendan
goof2 is offline        Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 12-09-2019, 04:22 PM   #2 (permalink)
Registered Users
 
Posts: 214
 

Join Date: Nov 2012
Default

Quote:
Originally Posted by goof2 View Post
I had to replace the one way on my 7.2. So I thought that maybe the the new A7 one way would work.
The A7 has the OWB on the intermediate shaft. Seems like a better place. After a little fussing I was able to get it to work.
If anyone else is interested heís some pics.


Had to turn the shaft down to 10mm. Then remove the dust shields on the old OWB and pack it with JB weld.

Itís very smooth now and has been holding strong.
Brendan

Nice! Frankly, I don't know how anyone can keep a household running without a machine shop at home.
Mr_Dirt is offline        Reply With Quote Quick reply to this message
Old 02-13-2020, 08:34 PM   #3 (permalink)
Registered Users
 

Join Date: Dec 2017
Default

Hey goof, how's that one way holding up? Finding it quite hard to source a one way for the 7.2, and wouldn't mind dusting off the ole atlas lathe..

Last edited by Randoo; 02-19-2020 at 06:41 PM..
Randoo is offline        Reply With Quote Quick reply to this message
Old 02-26-2020, 01:21 AM   #4 (permalink)
Registered Users
Thread Starter Thread Starter
 

Join Date: Apr 2004
Default

The A7 oneway is holding up good. I think the head feels smoother free wheeling also.

I couldnít source a decent 7.2 oneway that would hold up either. Thatís why I converted.

I pmíd you. Let me know how you make out.

Brendan
goof2 is offline        Reply With Quote Quick reply to this message
Old 04-15-2020, 08:40 AM   #5 (permalink)
Registered Users
 

Join Date: Oct 2014
Location: Texas
Default

Glad to see this is still working! I was hoping there would be a lot of parts compatibility between the 7.2 and A7.
__________________
#749: The end won't be for everyone. The choice, to know, will be yours

-Let's Go Brandon!!!
Skeezix is offline        Reply With Quote Quick reply to this message
Old 04-27-2020, 12:36 AM   #6 (permalink)
Registered Users
 
Posts: 58
 

Join Date: Aug 2004
Default

The one-way went out on my buddy's 7.2 today. I haven't quite checked to confirm that it isn't the bearing slipping in the hub. I think the actual bearing itself can be purchased from VXB.COM I need to take some measurements to see if they have it.
Otherwise, it looks like the bearing with the hub isn't in stock here in the US.
__________________
Chris Berardi
BobbyJack's Hobbies
Agilefalcon is offline        Reply With Quote Quick reply to this message
Old 04-27-2020, 07:51 AM   #7 (permalink)
Registered Users
 

Join Date: Oct 2014
Location: Texas
Default

Quote:
Originally Posted by Agilefalcon View Post
The one-way went out on my buddy's 7.2 today. I haven't quite checked to confirm that it isn't the bearing slipping in the hub. I think the actual bearing itself can be purchased from VXB.COM I need to take some measurements to see if they have it.
Otherwise, it looks like the bearing with the hub isn't in stock here in the US.
Maybe Goof2 can whip up another modified A7 part and send to you? Itís an idea to keep you flying.
__________________
#749: The end won't be for everyone. The choice, to know, will be yours

-Let's Go Brandon!!!
Skeezix is offline        Reply With Quote Quick reply to this message
Old 05-02-2020, 01:01 PM   #8 (permalink)
Registered Users
Thread Starter Thread Starter
 

Join Date: Apr 2004
Default

I tried a few bearings they just wouldnít hold up. The one that KDS sells is about $50 and I couldnít source it in the US.
I think the real problem comes from the oneway assembly it self. After awhile and maybe a couple of crashes the crown gear hub no longer can float smoothly on the inside of OWB. This causes to much load in the vertical direction on the bearing. There just not meant for that kid of load.


Brendan
goof2 is offline        Reply With Quote Quick reply to this message
Old 05-25-2020, 01:52 AM   #9 (permalink)
Registered Users
 
Posts: 13,965
 

Join Date: Dec 2011
Default

How tight is the fitment? Wouldn't locktite #648 be a better solution than JB Weld considering that this is exactly the sort of application it's meant for (i.e. fixing slip fit components like pinions and pulleys onto shafts)? Also with enough heat the parts can be separated unlike epoxy which is effectively permanent.
Atomic Skull is offline        Reply With Quote Quick reply to this message
Old 05-28-2020, 02:06 AM   #10 (permalink)
Registered Users
 

Join Date: Jun 2010
Location: Austin, TX
Default VXB.COM

Did we figure out the size of the one way?

VXB.COM
__________________
Austin, TX


HoudiniRCHeli Podcast
rspiegel is offline        Reply With Quote Quick reply to this message
Old 06-04-2020, 04:16 PM   #11 (permalink)
Registered Users
Thread Starter Thread Starter
 

Join Date: Apr 2004
Default 7.2 one way alternative

Atomic
No jb weld is to lock the old owb from working. Creating a solid spacer.

Rspiegel
Which bearing size you looking for old 7.2 or new A7?

Last edited by goof2; 06-04-2020 at 05:59 PM..
goof2 is offline        Reply With Quote Quick reply to this message
Old 06-04-2020, 08:25 PM   #12 (permalink)
Registered Users
 

Join Date: Jun 2010
Location: Austin, TX
Default OneWay

Old 7.2 . I have a spare coming with my crashed kit. But figured i would get ahead of the game on it if i could.

A7 I have not seen any issues with the one way.
__________________
Austin, TX


HoudiniRCHeli Podcast
rspiegel is offline        Reply With Quote Quick reply to this message
Old 06-06-2020, 10:57 AM   #13 (permalink)
Registered Users
Thread Starter Thread Starter
 

Join Date: Apr 2004
Default

goof2 is offline        Reply With Quote Quick reply to this message
Old 06-07-2020, 02:18 AM   #14 (permalink)
Registered Users
 

Join Date: Jun 2010
Location: Austin, TX
Talking Not bd

Not bad 19$

https://www.amazon.com/Boca-Bearing-.../dp/B00DV1WT3Q

Now pressing it in and out may be a bit of a pain...
__________________
Austin, TX


HoudiniRCHeli Podcast
rspiegel is offline        Reply With Quote Quick reply to this message
Old 06-07-2020, 12:53 PM   #15 (permalink)
Registered Users
Thread Starter Thread Starter
 

Join Date: Apr 2004
Default

Heat up the housing. It will come right out.
Make sure the bearing you order has a key cut on the inside and outside.
You will also have to grind a flat for set screw.
goof2 is offline        Reply With Quote Quick reply to this message
Old 06-09-2020, 05:37 PM   #16 (permalink)
Registered Users
 

Join Date: Jun 2010
Location: Austin, TX
Default OK

OK not sure what that is but ok,

?You will also have to grind a flat for set screw.?
__________________
Austin, TX


HoudiniRCHeli Podcast
rspiegel is offline        Reply With Quote Quick reply to this message
Old 01-11-2021, 12:38 AM   #17 (permalink)
Registered Users
 
Posts: 13,965
 

Join Date: Dec 2011
Default

Never seen a one way like that used in a helicopter most either use a sprag clutch or a ramp roller clutch. the A7 one way uses two ramp roller clutches for example.
Atomic Skull 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.
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


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 © Website Acquisitions Inc. All rights reserved.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.

SEO by vBSEO 3.6.1