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Sled Pulling From Street to Pro-Mod, get your Sled Pulling fix here! |
11-15-2014, 09:27 PM
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#1
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Name: 99GreenCummins
Title: That guy....
Status: Not Here
Join Date: Feb 2011
Location: Marietta, Ohio
Member`s Gallery
Posts: 2,387
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2.5 suspension help
We are building the truck to run 2.5. Trying to follow cotpc rules so we can hook with them when the pulls are close.
Truck is an 01 ext. Cab long bed dually auto
Per cotpc rules, are they allowing solid suspension?(not requiring 1" of movement) Am I reading that correct? If so, is it best to have links on inside of axle or closer to outside.
What kind of hitches are they allowing? Reese style I'm assuming but what can or can't I do for bracing?
What's everyone doing for front suspension? Our leveling kit will come off. Should I add anything else?
How is everyone hanging front weights? We have a bracket but I need ideas of how to get it on the frame without damaging the frame.
Thanks guys!
__________________
Todd
Some farm trucks
2014 Ram 3500 19.5s, aisin
1999 Ram 2500,6 spd, typical mods
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11-16-2014, 01:43 PM
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#2
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Name: jedeka
Title: Too Much Time
Status: Not Here
Join Date: Oct 2009
Location: Boone, Iowa
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Posts: 1,413
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You could add an extra leaf or two the rear leaf spring pack. Build your blocks so the they are tight between the axle and frame. I built blocks that replace the stock rubber bump stops. Receiver hitch can be slid in, so your hitch is just behind the box. Replace bumper with roll pan. Definitely remove leveling spacers. As for weights, can you run a weight bracket or does weight need to stay behind the front bumper or in the bed?
__________________
1996 Dodge Ram 2500 4x4, 5 spd. 4.88 gears, 2.5" turbo, Smokem inj, 5000 rpm springs, NV271, South Bend dd clutch, 33x12.50-15 STS tires, 6 inch stack, custom valve springs
2005 3500 4x4 dually, auto, KORE leveling coils, 19.5 wheels, Smarty Jr
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11-16-2014, 02:02 PM
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#3
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Name: 99GreenCummins
Title: That guy....
Status: Not Here
Join Date: Feb 2011
Location: Marietta, Ohio
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Posts: 2,387
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They allow hanging weight but no weight boxes.
Rear bumpers aren't required so its coming off totally. Roll pan may come in the future but no plans as of now.
__________________
Todd
Some farm trucks
2014 Ram 3500 19.5s, aisin
1999 Ram 2500,6 spd, typical mods
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11-17-2014, 06:46 AM
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#4
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Name: jedeka
Title: Too Much Time
Status: Not Here
Join Date: Oct 2009
Location: Boone, Iowa
Member`s Gallery
Posts: 1,413
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Other than cosmetic, the roll pan isn't a big deal. As far as a weight bracket goes, look at 3rd gen trucks with snow plows to see how they mount the brackets. At the top of the sled pulling forum, there is a bunch of pics in the weight bracket heading. You could mount some long receiver hitch tubing to the frame, so you could pull a couple puns and remove the weight bracket, if you want it removed.
__________________
1996 Dodge Ram 2500 4x4, 5 spd. 4.88 gears, 2.5" turbo, Smokem inj, 5000 rpm springs, NV271, South Bend dd clutch, 33x12.50-15 STS tires, 6 inch stack, custom valve springs
2005 3500 4x4 dually, auto, KORE leveling coils, 19.5 wheels, Smarty Jr
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11-17-2014, 06:56 AM
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#5
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Name: zstroken
Title: For $$$ your name here
Status: Not Here
Join Date: Sep 2006
Location: Western Michigan(by the lake)
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Posts: 23,151
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Clamp the springs if you are allowed.
__________________
2008 4x4 Megacab, 68RFE
97 Dodge gone....
24V P-Pump Mafia member #1(retired)
Thanks to Mumau Diesel, Goerend Transmission, Northeast Diesel Service!
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11-17-2014, 08:35 AM
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#6
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Name: 97rada
Title: Too Much Time
Status: Not Here
Join Date: Feb 2008
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Posts: 5,410
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Quote:
Originally Posted by zstroken
Clamp the springs if you are allowed.
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What does this prevent
Sent from my iPhone using Tapatalk
__________________
Austin
tow truck- 14-3500 with tuning
toy truck -94 rclb auto- 5.2x with a lot left. Shooting for 4s
Any intelligent fool can make things bigger and more complex...it takes a touch of genius- and alot of courage to move in the opposite direction.
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11-17-2014, 09:36 AM
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#7
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Name: zstroken
Title: For $$$ your name here
Status: Not Here
Join Date: Sep 2006
Location: Western Michigan(by the lake)
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Posts: 23,151
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Quote:
Originally Posted by 97rada
What does this prevent
Sent from my iPhone using Tapatalk
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The springs slide against one another. If you clamp them together, they can't slide. Which makes the truck darn near a solid suspension.
There are other tricks that can be done. Spend some time looking at the suspension and you can see.
__________________
2008 4x4 Megacab, 68RFE
97 Dodge gone....
24V P-Pump Mafia member #1(retired)
Thanks to Mumau Diesel, Goerend Transmission, Northeast Diesel Service!
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11-17-2014, 06:53 PM
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#8
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Name: PTPULLINCHASSIS
Title: DEALS ON REAL WHEELS
Status: Not Here
Join Date: Oct 2008
Location: OHIO
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Posts: 709
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Quote:
Originally Posted by zstroken
The springs slide against one another. If you clamp them together, they can't slide. Which makes the truck darn near a solid suspension.
There are other tricks that can be done. Spend some time looking at the suspension and you can see.
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They can run solid suspension.
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11-17-2014, 07:08 PM
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#9
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Name: ComnRailPwr
Title: Too Much Time
Status: Not Here
Join Date: Jun 2009
Location: Stoutsville , OH
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Posts: 3,293
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Make rear completely solid. Everything must be bolted and removable. Hang front weights off weight rack that slides into 2" receivers welded to frame, brace accordingly. Hitch cross tube and receiver must be toward rear of frame, not necessarily stock location.. Hooking point specific dimensions are posted in rules. Don't reinvent the wheel with the hitch. Move it up and forward some and call it good. Strengthen frame to prevent flex behind solid suspension. Short traction bars help hook, at least the did for me. Weld axle tubes to pumpkin. Turn up the HP!
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11-17-2014, 09:38 PM
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#10
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Name: 99GreenCummins
Title: That guy....
Status: Not Here
Join Date: Feb 2011
Location: Marietta, Ohio
Member`s Gallery
Posts: 2,387
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Quote:
Originally Posted by ComnRailPwr
Make rear completely solid. Everything must be bolted and removable. Hang front weights off weight rack that slides into 2" receivers welded to frame, brace accordingly. Hitch cross tube and receiver must be toward rear of frame, not necessarily stock location.. Hooking point specific dimensions are posted in rules. Don't reinvent the wheel with the hitch. Move it up and forward some and call it good. Strengthen frame to prevent flex behind solid suspension. Short traction bars help hook, at least the did for me. Weld axle tubes to pumpkin. Turn up the HP!
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We will be low on the HP level for any cotpc hooks but will be giving it all we can. I always thought that suspension had to have 1" of travel but after reading rules I had to ask. Axle tubes will be welded when the bed comes off soon. Now hopefully I can make this thing hook.
Can mounts and such be welded to the axles or does absolutely everything have to be bolted?
__________________
Todd
Some farm trucks
2014 Ram 3500 19.5s, aisin
1999 Ram 2500,6 spd, typical mods
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11-18-2014, 03:54 AM
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#11
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Name: Penni
Title: Too Much Time
Status: Not Here
Join Date: Oct 2010
Location: Southwest MO
Member`s Gallery
Posts: 1,351
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Quote:
Originally Posted by ComnRailPwr
Make rear completely solid. Everything must be bolted and removable. Hang front weights off weight rack that slides into 2" receivers welded to frame, brace accordingly. Hitch cross tube and receiver must be toward rear of frame, not necessarily stock location.. Hooking point specific dimensions are posted in rules. Don't reinvent the wheel with the hitch. Move it up and forward some and call it good. Strengthen frame to prevent flex behind solid suspension. Short traction bars help hook, at least the did for me. Weld axle tubes to pumpkin. Turn up the HP!
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Elaborate on axle tubes welded to pumpkin please
__________________
Mike
98 - 12v, under construction now, eventually a dedicated 2.5 puller
06 - QCSB - G56, 3250 SB DD, Fass 150, Arson III, 90hp DDP, EFI Live by Done Right Diesel Performance, CTS Insight, S&B CAI, Full Audio System
1972 - Chevy C-10 longbed, also rebuilding slowly
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11-18-2014, 04:49 AM
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#12
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Name: Howling
Title: Soot Sniffer
Status: Not Here
Join Date: Apr 2006
Location: Northern,IL
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Posts: 4,304
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Pretty much as it sounds, you don't want the pumpkin and tubes to twist.
__________________
Eric
2006 Dodge CTD/48re 4x4 Sport
With some fuel and air.
Bullseye,Hamilton,Exergy,EFI,ATS,FASS,HTS,Thuren, Toyo's...
1996 2500 RC 4x4 CTD-63/68/.83,5X.014,180 maxed Ppump,Fass...
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11-18-2014, 05:21 AM
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#13
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Name: ComnRailPwr
Title: Too Much Time
Status: Not Here
Join Date: Jun 2009
Location: Stoutsville , OH
Member`s Gallery
Posts: 3,293
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Quote:
Originally Posted by 99GreenCummins
Can mounts and such be welded to the axles or does absolutely everything have to be bolted?
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Mounts can be welded,as long as the vertical support can be removed. Mine is actually welded all solid with U bolts sucking the axle up and holding it in place against the stops.
Quote:
Originally Posted by Penni
Elaborate on axle tubes welded to pumpkin please
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Like stated, its an easily forgotten thing to do. The center section will twist in the axle tubes and its a pita to fix. Just good insurance.
Last edited by ComnRailPwr; 11-18-2014 at 05:23 AM.
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11-18-2014, 05:36 AM
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#14
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Name: Penni
Title: Too Much Time
Status: Not Here
Join Date: Oct 2010
Location: Southwest MO
Member`s Gallery
Posts: 1,351
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Could you post pictures? I guess I'm just not understanding
__________________
Mike
98 - 12v, under construction now, eventually a dedicated 2.5 puller
06 - QCSB - G56, 3250 SB DD, Fass 150, Arson III, 90hp DDP, EFI Live by Done Right Diesel Performance, CTS Insight, S&B CAI, Full Audio System
1972 - Chevy C-10 longbed, also rebuilding slowly
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11-18-2014, 06:03 AM
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#15
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Name: ComnRailPwr
Title: Too Much Time
Status: Not Here
Join Date: Jun 2009
Location: Stoutsville , OH
Member`s Gallery
Posts: 3,293
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11-18-2014, 06:14 AM
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#16
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Name: Shawdrainage
Title: Shaw
Status: Not Here
Join Date: Feb 2010
Location: Wapakoneta, OH
Member`s Gallery
Posts: 1,617
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What happens...... Broke plug welds. Spun dif.
This was on a very tame Hot Street Gas Truck, about 600hp at the crank.
__________________
2016 Ram Powerwagon...... Stock for now
2006 Dodge Powerwagon "REHAB" Hot Street Puller. A whole truckload of SECERT SQUIRREL stuff, but still a small block HEMI!!!
1974 Dodge Powerwagon... Undecided roller.
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11-18-2014, 06:30 AM
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#17
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Name: Burningtire
Title: Too Much Time
Status: Not Here
Join Date: Apr 2012
Location: Rhode Island
Member`s Gallery
Posts: 598
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Do any of you guys do any type of pre loading on your traction bars or just enough to be snug?
__________________
Gots a two point five pullin truck!
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11-18-2014, 06:40 AM
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#18
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Name: ComnRailPwr
Title: Too Much Time
Status: Not Here
Join Date: Jun 2009
Location: Stoutsville , OH
Member`s Gallery
Posts: 3,293
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Mine are pretty dang tight
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11-18-2014, 06:59 AM
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#19
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Name: Shawdrainage
Title: Shaw
Status: Not Here
Join Date: Feb 2010
Location: Wapakoneta, OH
Member`s Gallery
Posts: 1,617
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Mine are tight
__________________
2016 Ram Powerwagon...... Stock for now
2006 Dodge Powerwagon "REHAB" Hot Street Puller. A whole truckload of SECERT SQUIRREL stuff, but still a small block HEMI!!!
1974 Dodge Powerwagon... Undecided roller.
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11-18-2014, 08:08 AM
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#20
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Name: 99GreenCummins
Title: That guy....
Status: Not Here
Join Date: Feb 2011
Location: Marietta, Ohio
Member`s Gallery
Posts: 2,387
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Quote:
Originally Posted by Shawdrainage
Mine are tight
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Tight pushing back or pulling forward?
__________________
Todd
Some farm trucks
2014 Ram 3500 19.5s, aisin
1999 Ram 2500,6 spd, typical mods
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