Shackles keep flipping? - Yellow Bullet Forums
;

Go Back   Yellow Bullet Forums > Technical Section > Trailers

Trailers Talk about trailers, upgrades, goodies and towing

Reply
 
Thread Tools Display Modes
Old 08-05-2019, 05:17 PM   #1
Tech265
Junior Member
Spooled up
 
Join Date: Oct 2012
Posts: 101
Default Shackles keep flipping?

Been in shackles once but, only because I was little and Dad was a Sheriff's deputy.
I went thru the suspension on my 7500 GVW open trailer and replaced all the bushings. The equalizers were worn so, I replaced them also. Everything was new but, same size except, the spring shackles. Evidently the shackles are causing the equalizer to be overload because, it keeps trying to flip the shackles over.
Question is; If I buy new shackles, can I buy too them too long. As obviously I have found they can be too short.
Tech265 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 08-05-2019, 05:23 PM   #2
LLLosingit
Senior Member
Smoked another BBC
 
Join Date: Dec 2013
Location: Iowa
Posts: 1,868
Default Re: Shackles keep flipping?

If they are to long they can flex side to side. I would just measure the ones you took off and try to get some that length or slightly longer or drill new holes if possible.
LLLosingit is offline   Reply With Quote
Old 08-06-2019, 07:10 PM   #3
Tech265
Junior Member
Spooled up
 
Join Date: Oct 2012
Posts: 101
Default Re: Shackles keep flipping?

I ordered 2 different, longer sets of spring shackles and will give 1 set a try, then the other, if needed.
Sucks getting older, I know I measured the original parts and should have written it down.
Tech265 is offline   Reply With Quote
Old 08-08-2019, 07:16 AM   #4
Smokin408
Junior Member
Launchin
 
Join Date: Jan 2015
Posts: 409
Default Re: Shackles keep flipping?

You have to make sure the trailer is very close to level when loaded. If not, thats what causes the shackles to flip. Set it on the jack and go up and down watching the equalizers. you will see what I mean. Ideally you want the trailer perfectly level when loaded. This is so when you go up or down an incline the suspension can move either way without bottoming out on the frame.
Smokin408 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 08-26-2019, 07:08 PM   #5
kerrynzl
Senior Member
Smoked another BBC
 
kerrynzl's Avatar
 
Join Date: Nov 2010
Location: Tauranga, New Zealand
Posts: 2,327
Default Re: Shackles keep flipping?

Quote:
Originally Posted by Tech265 View Post
Been in shackles once but, only because I was little and Dad was a Sheriff's deputy.
I went thru the suspension on my 7500 GVW open trailer and replaced all the bushings. The equalizers were worn so, I replaced them also. Everything was new but, same size except, the spring shackles. Evidently the shackles are causing the equalizer to be overload because, it keeps trying to flip the shackles over.
Question is; If I buy new shackles, can I buy too them too long. As obviously I have found they can be too short.
Out of curiosity, Are your shackles above or below the rockers in normal position?
And which axle flips the shackles?
Is it 2w or 4w brakes?

This problem is common on 4 wheel braked equalizer suspension with the shackles above the rockers [in tension]
The rear shackle flips below due to brake torque on the rear axle when the trailer is empty [and the user forgets to back off the brake controller]
The brake torque is great enough to lift the whole trailer [when empty] and "wrap" the rear spring in an "S" shape [shortening it]

What I do is weld a "Bridge" across the shackles to prevent them inverting [offset them so it will return]
kerrynzl is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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



All times are GMT -4. The time now is 04:12 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 0%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Yellow Bullet LLC
 

Garage Plus vBulletin Plugins by Drive Thru Online, Inc.