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#1 |
Registered User
Join Date: Jan 2007
Location: San Jose
Posts: 847
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Setting up a 4 link
Hey guys,
I picked up a new 4 link for my truck at the local car show, and was wondering if anyone has set one up properly with a dropmember. Any input would be greatly appreciated, especially geometric stuff! |
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#2 | |
Registered User
Join Date: Sep 2006
Location: Covington, WA
Posts: 770
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Re: Setting up a 4 link
Quote:
Triangulated, you need the triangular bars to be greater than 30 degree angle to keep it from going side to side, unequal length obviously for top and bottom will create a change in pinion angle throughout the range of travel, which can be good or bad, depending on what you want to use it for. Those are a few things that pop into my mind right now, its midnight and I've studied 6 hours for tests so might have a few more thoughts when I'm awake again haha. |
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#3 | |
Registered User
Join Date: Jan 2007
Location: San Jose
Posts: 847
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Re: Setting up a 4 link
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#4 |
Registered User
Join Date: Sep 2006
Location: Covington, WA
Posts: 770
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Re: Setting up a 4 link
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#5 |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,246
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Re: Setting up a 4 link
I'm almost done with a Morrison Tri-4 bar in a '67.....is there something specific you need to know? What brand is yours? I had to do some fabbing to make it work. I can get you some pics if it will help.
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Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE Last edited by Captainfab; 11-10-2008 at 01:46 AM. |
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#6 |
Registered User
Join Date: Jan 2007
Location: San Jose
Posts: 847
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Re: Setting up a 4 link
I think I may be putting more into this then I really need to. I was going to use a 4 link calculator to set up the handling perfectly, but I'm thinking that is no necessary. I.m wondering how far the lower link must be placed from the frame to keep good frame clearance, but not so far out it get near the tire. Any pictures would be greatly appreciated!
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#7 |
Registered User
Join Date: Dec 2007
Location: Palmer, Alaska
Posts: 13,821
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Re: Setting up a 4 link
nice work Capt.
is that truck finished? if so how does that setup handle?
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#8 | |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,246
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Re: Setting up a 4 link
Quote:
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__________________
Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE Last edited by Captainfab; 11-12-2008 at 02:27 AM. |
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#9 | |
One day...
Join Date: Apr 2008
Location: Tuttle, Ok
Posts: 9,240
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Re: Setting up a 4 link
Quote:
Setup looks good ![]() |
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#10 | |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,246
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Re: Setting up a 4 link
Quote:
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__________________
Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE |
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#11 |
3DrDwn--the 'burb not the band
Join Date: Jan 2007
Location: missoula, mt
Posts: 598
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Re: Setting up a 4 link
cap'n,
I may be wrong here but it was always my understanding on the tri 4-link that the "longer" bars were the uppers and were longer to compensate for being mounted at angles instead of straight like on a parallel 4 bar. It was also always my understanding that it was done that way to keep the pivot points on the frame the same distance from the axle and to minimize pinion change. I see by looking at your pics you went with the short bars up top and have a pretty good distance between your pivot points. I'm not saying right or wrong just curious why you chose that way and what the benefits are? TIA, Josh
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Slo and Lo that is the tempo. '72 burb build page here: http://67-72chevytrucks.com/vboard/s...d.php?t=259256 '89 GMC Dually crew build page coming soon. 88 ![]() duallys past/present pics here: http://67-72chevytrucks.com/vboard/s...46#post4001246 89 1 ton Dually rear flip kit install here: http://67-72chevytrucks.com/vboard/s...d.php?t=354327 |
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#12 | |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,246
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Re: Setting up a 4 link
Quote:
The '67 that I'm building is for a good customer, and with my limited link suspension experience, I decided to play it safe and just order the kit from Art Morrison. The Tri-4 bar suspension was designed by the engineers at AME and is a proven setup, which is one of the reasons I went with it. The bars come already welded and the kit comes with instructions giving parameters for installation. Here is the kit that I ordered http://artmorrison.com/layout.php?y=...i4bar/&x=index I am by no means saying that this is the best triangulated 4 link for the street, it is just one that is proven and was the 'safe' way for me to go at the time. If it was my own truck I probably would have built one from scratch. Let me know if I can be of any help Josh John
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Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE Last edited by Captainfab; 11-13-2008 at 01:07 AM. |
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#13 | |
Registered User
Join Date: Sep 2006
Location: Covington, WA
Posts: 770
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Re: Setting up a 4 link
Quote:
Captain, looks very impressive, even though its a kit, the install is incredible. Where in cda are you, I keep hearing your out there, I'm stuck at gonzaga, not too far away. |
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#14 | |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,246
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Re: Setting up a 4 link
Quote:
__________________
Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE |
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#15 |
KOFFIN DRAGGER
Join Date: Jan 2008
Location: st.anthony Idaho
Posts: 864
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Re: Setting up a 4 link
I must chime in here, I have seen the captians work first hand, and he is a artist. That frame is just beautiful and I wish it was under my rig.
Now just to clear up a few things, A properly setup double triangulated four link will not change the pinion angle, ever. Now that is only the case when you are dealing with insane amounts of up and down travel. In a street truck app. it is not near as important because your talking 2"-10" of travel as an example vs 30"-50". I am not claiming to know it all about 4 links, but I have dealt with super long travel monster truck suspension to mild travel low rider stuff. A few inches in bar length and and a few degrees in angles can make huge changes at the pinion. I know I will probably get a lashing for this, and I am not saying anyone is wrong or right, but you cant argue with the math and the finished product.
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If the life I live dont kill me, then I guess I'll never die! New updated stuff at www.kdrodworks.com My site still needs help, web guys and gals pm me. the best guys in the whole world: sweet70beast, jonzcustomshop, runninlow, captainfab, and the one I havent met yet, joe231 |
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#16 | |
Registered User
Join Date: Jan 2007
Location: San Jose
Posts: 847
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Re: Setting up a 4 link
Double triangulated? As in both the uppers and lowers are triangulated?
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#17 |
KOFFIN DRAGGER
Join Date: Jan 2008
Location: st.anthony Idaho
Posts: 864
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Re: Setting up a 4 link
yep, top and bottom. its monster truck tech for extra long travel and strength. It would work on street stuff as well with shorter bars. thats why the pinion angle dont change with this setup, the 2 triangles have to work together to travel. The standard setup on most monster trucks is top: frame to center axle and the lower is outside axle to center frame. This also allows massive articulation, so a street app would almost require a swaybar, or properly valved shocks mounted at the correct angle forward and to center. the powerblock site has a 4 link geo download that is a big help for all the math.
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If the life I live dont kill me, then I guess I'll never die! New updated stuff at www.kdrodworks.com My site still needs help, web guys and gals pm me. the best guys in the whole world: sweet70beast, jonzcustomshop, runninlow, captainfab, and the one I havent met yet, joe231 Last edited by kdrodworks316; 11-17-2008 at 12:26 AM. Reason: added info |
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#18 | |
Registered User
Join Date: Jan 2007
Location: San Jose
Posts: 847
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Re: Setting up a 4 link
Quote:
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#19 | |
KOFFIN DRAGGER
Join Date: Jan 2008
Location: st.anthony Idaho
Posts: 864
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Re: Setting up a 4 link
Quote:
__________________
If the life I live dont kill me, then I guess I'll never die! New updated stuff at www.kdrodworks.com My site still needs help, web guys and gals pm me. the best guys in the whole world: sweet70beast, jonzcustomshop, runninlow, captainfab, and the one I havent met yet, joe231 |
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#20 |
3DrDwn--the 'burb not the band
Join Date: Jan 2007
Location: missoula, mt
Posts: 598
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Re: Setting up a 4 link
No arguement here! sorry if it came off that way. I was mostly trying to continue my own education and am well aware there being more than one acceptable way to "get 'er done"
Josh PS I"M A DADDY..... 5:32PM sat sealed the deal I'll try to get some pics in Gen D soon.
__________________
Slo and Lo that is the tempo. '72 burb build page here: http://67-72chevytrucks.com/vboard/s...d.php?t=259256 '89 GMC Dually crew build page coming soon. 88 ![]() duallys past/present pics here: http://67-72chevytrucks.com/vboard/s...46#post4001246 89 1 ton Dually rear flip kit install here: http://67-72chevytrucks.com/vboard/s...d.php?t=354327 |
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#21 | |
Registered User
Join Date: Jan 2007
Location: San Jose
Posts: 847
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Re: Setting up a 4 link
Congratulations!
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#22 | |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,246
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Re: Setting up a 4 link
Quote:
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__________________
Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE |
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#23 |
KOFFIN DRAGGER
Join Date: Jan 2008
Location: st.anthony Idaho
Posts: 864
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Re: Setting up a 4 link
And a huge congrats to the new low rider Daddy! I cant wait to see her Josh
__________________
If the life I live dont kill me, then I guess I'll never die! New updated stuff at www.kdrodworks.com My site still needs help, web guys and gals pm me. the best guys in the whole world: sweet70beast, jonzcustomshop, runninlow, captainfab, and the one I havent met yet, joe231 |
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#24 |
Registered User
Join Date: Dec 2007
Location: Palmer, Alaska
Posts: 13,821
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Re: Setting up a 4 link
yeah, they are in his crew cab thread
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![]() ![]() Last edited by joe231; 07-14-2009 at 10:51 PM. |
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#25 |
"Where were you in '62?"
![]() Join Date: Jul 2004
Location: Cleveland County, North Cackalacky
Posts: 5,013
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Sorry Joe,
I was in the wrong tread. Doe! Me needs to pay attention!
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PROJECT: "FULL METAL YELLOW JACKET" 1962 Chevy C-10 Stepside Shortbed Nostalgia Pro/Street Pickup Truck PROJECT: "FULL METAL YELLOW JACKET Build Thread What Are You Workin' On? - 1Bad62ChevyPickup PROJECT: "TYRANNORAMBLER REX" 1969 AMC Rambler American Nostalgia Pro/Street Youtube Channel: Father Son Projects Youtube Channel: 2TIMOTHY2FITHTEEN ![]() ![]() ![]() ![]() ![]() ![]() ![]() "North and South Carolina Folks Click Here!" (((( ~ I have Parts For Sale & Miscellaneous Stuff ~ )))) "Well being as there's no other place around the place, I reckon this must be the place, I reckon...Nyuk Nyuk Nyuk" -Curly Howard Ph.D. |
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