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Caltracs and backhalfed axle?
#1016623
06/20/11 02:08 AM
06/20/11 02:08 AM
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Joined: Sep 2005
Posts: 769
Europa, Estonia
Georg
OP
super stock
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OP
super stock
Joined: Sep 2005
Posts: 769
Europa, Estonia
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Do anyone use combo like backhalfed rear axle and Caltracs with monoleafs or everybody going automaticly to 4-link when backhalf their car?
Outlaw Plymouth Valiant
R5/P7 Powered by Liuzzo Racing
COMP Performance Group dealer in Baltic
Premium Performance
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Re: Caltracs and backhalfed axle?
[Re: Georg]
#1016624
06/20/11 08:29 AM
06/20/11 08:29 AM
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Joined: Dec 2009
Posts: 20,647
in a cattle trailer down by th...
Guitar Jones
Paddle faster! I hear banjo music!
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Paddle faster! I hear banjo music!
Joined: Dec 2009
Posts: 20,647
in a cattle trailer down by th...
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Personally I see no reason to use CalTracs if you're going to back half the car, I mean why would you?
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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Re: Caltracs and backhalfed axle?
[Re: Dragula]
#1016626
06/20/11 10:09 AM
06/20/11 10:09 AM
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Joined: Dec 2009
Posts: 20,647
in a cattle trailer down by th...
Guitar Jones
Paddle faster! I hear banjo music!
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Paddle faster! I hear banjo music!
Joined: Dec 2009
Posts: 20,647
in a cattle trailer down by th...
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But if you back half it you've already cut it up.
I can see running CalTracs for not cutting the car up, I have them on my Duster, it's an original 340 4 speed car with the only option being the over the roof tape stripe.
Last edited by Guitar Jones; 06/20/11 10:12 AM.
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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Re: Caltracs and backhalfed axle?
[Re: Georg]
#1016629
06/20/11 04:14 PM
06/20/11 04:14 PM
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Joined: Dec 2009
Posts: 20,647
in a cattle trailer down by th...
Guitar Jones
Paddle faster! I hear banjo music!
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Paddle faster! I hear banjo music!
Joined: Dec 2009
Posts: 20,647
in a cattle trailer down by th...
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Yes there are very reasonable excuses not to use CalTracs.
1. They are OK on good tracks but hit and miss on marginal tracks. Mine would be very inconsistent in the late rounds at night. Same could be said for a very hot track, but on a well prepped track they worked great.
My four link goes down the track everytime regardless of the temp or time of day.
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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Re: Caltracs and backhalfed axle?
[Re: fasterdart]
#1016634
06/20/11 04:37 PM
06/20/11 04:37 PM
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Joined: Dec 2009
Posts: 20,647
in a cattle trailer down by th...
Guitar Jones
Paddle faster! I hear banjo music!
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Paddle faster! I hear banjo music!
Joined: Dec 2009
Posts: 20,647
in a cattle trailer down by th...
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Quote:
no reason to back half the car.we run 1.2x 60 ft times with cal tracs and 29.5x10.5 tire.dead consistant every time...the car runs 8.90s also.
With what a traction controlled starting line limited turbo or a nitrous set up on a timer? Even my friends 3.9 V6 stocker Dakota has trouble from time to time. From personal experience I will tell you that CalTracs will never be as good or as consistent as a 4 link car, period. Sell the CalTracs, heck that whole setup is darn near $1000 here with the good shocks and buy a four link, you won't be sorry you did.
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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Re: Caltracs and backhalfed axle?
[Re: fasterdart]
#1016636
06/20/11 05:26 PM
06/20/11 05:26 PM
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Joined: Dec 2009
Posts: 20,647
in a cattle trailer down by th...
Guitar Jones
Paddle faster! I hear banjo music!
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Paddle faster! I hear banjo music!
Joined: Dec 2009
Posts: 20,647
in a cattle trailer down by th...
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Quote:
car is n/a...we only pull 6 degres timing out on the hit for .2 sec...you gotta know how it works and you must have good front end travel.
I know how they work, I've had my Duster on the back bumper with them for 2 passes, third pass and it's on marbles. It's not the bars, it's the tracks. You must only run on very good tracks. Not all of us have that luxury.
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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Re: Caltracs and backhalfed axle?
[Re: Guitar Jones]
#1016637
06/20/11 05:34 PM
06/20/11 05:34 PM
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Joined: May 2004
Posts: 12,400
Taxes & Virus's R-US, NY
Dragula
I Live Here
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I Live Here
Joined: May 2004
Posts: 12,400
Taxes & Virus's R-US, NY
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Quote:
But if you back half it you've already cut it up.
I can see running CalTracs for not cutting the car up, I have them on my Duster, it's an original 340 4 speed car with the only option being the over the roof tape stripe.
Actually I didn't cut it up, its been that way since the early '70's and with as much tire as I run, its not an issue. With SS springs it was horrible. With mono's and caltrac's it leaves like a ladder bar car. No wind up, no lag, just gone.
On the other hand I have a G-code '72 Cuda I am working on, and it has the Caltrac's with mono's and stock wheel wells and I am strongly thinking of putting ladder bars on it. Smaller tire, I think ladders or 4-link is better.
Last edited by Dragula; 06/20/11 05:36 PM.
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Re: Caltracs and backhalfed axle?
[Re: Guitar Jones]
#1016638
06/20/11 05:53 PM
06/20/11 05:53 PM
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Joined: Jan 2003
Posts: 32,394
Quicktree
I Win
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I Win
Joined: Jan 2003
Posts: 32,394
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Quote:
Quote:
car is n/a...we only pull 6 degres timing out on the hit for .2 sec...you gotta know how it works and you must have good front end travel.
I know how they work, I've had my Duster on the back bumper with them for 2 passes, third pass and it's on marbles. It's not the bars, it's the tracks. You must only run on very good tracks. Not all of us have that luxury.
what track do you race at?
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Re: Caltracs and backhalfed axle?
[Re: Georg]
#1016639
06/20/11 06:55 PM
06/20/11 06:55 PM
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Joined: Feb 2007
Posts: 5,080
organ
maximum entropy
master
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master
Joined: Feb 2007
Posts: 5,080
organ
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i would go with the 4 link when backhalfing just because it takes so much more fabrication, which is really fun. then you end up with a suspension that is ubber adjustable.
for what is the good life if not doing things thoughtfully?
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Re: Caltracs and backhalfed axle?
[Re: Quicktree]
#1016640
06/20/11 06:58 PM
06/20/11 06:58 PM
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Joined: Dec 2009
Posts: 20,647
in a cattle trailer down by th...
Guitar Jones
Paddle faster! I hear banjo music!
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Paddle faster! I hear banjo music!
Joined: Dec 2009
Posts: 20,647
in a cattle trailer down by th...
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Quote:
Quote:
Quote:
car is n/a...we only pull 6 degres timing out on the hit for .2 sec...you gotta know how it works and you must have good front end travel.
I know how they work, I've had my Duster on the back bumper with them for 2 passes, third pass and it's on marbles. It's not the bars, it's the tracks. You must only run on very good tracks. Not all of us have that luxury.
what track do you race at?
Mostly at Orlando Speed World, it's OK most times but others times, especially late at night it's not. That particular time I described was the Gamblers race at Silver Dollar after the division finals. I race some of the outlaw tracks too like Lakeland and CFRC been to Moroso, Bradenton, Gainseville many are nice tracks some not so.
I had to let out of it with the wheels in the air during the King of the Track night at Speed World one year, I was about to take out the tree and the motorcycle in the other lane. Car was fine up to that point but it was about 2am. Like I said on a good track they work, on a marginal track it's hit and miss.
Last edited by Guitar Jones; 06/20/11 07:00 PM.
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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Re: Caltracs and backhalfed axle?
[Re: 64hemi330sedan]
#1016643
06/24/11 02:36 PM
06/24/11 02:36 PM
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Joined: Sep 2005
Posts: 769
Europa, Estonia
Georg
OP
super stock
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OP
super stock
Joined: Sep 2005
Posts: 769
Europa, Estonia
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thanks guys for answers. I have some questions more for you.
As I am going to make tubular chassie except front subframes there are many sides how to get best weight transfer, instant centre etc. This is all new stuff for me and I hope here is somebody who can lead me into right path. (I still going to use Caltracs in this project) I mean-explain how and why should I do this and this. Is there some good calculators what can help me?
As Iam going to make new firewall and floor also then Iam able to move motor quite a lot behind and so on...but how much is enough, what should be motor height? Is better to lower or raise motor with tranny etc. As you see, lot of questions (hopefully not too dumb ones)where I need help and hope to get answers. As this is not easy project then I want to make it work first time
I also trie to lower whole car as much as possible
Last edited by Georg; 06/24/11 02:38 PM.
Outlaw Plymouth Valiant
R5/P7 Powered by Liuzzo Racing
COMP Performance Group dealer in Baltic
Premium Performance
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Re: Caltracs and backhalfed axle?
[Re: Georg]
#1016644
06/24/11 02:41 PM
06/24/11 02:41 PM
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Joined: Dec 2009
Posts: 20,647
in a cattle trailer down by th...
Guitar Jones
Paddle faster! I hear banjo music!
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Paddle faster! I hear banjo music!
Joined: Dec 2009
Posts: 20,647
in a cattle trailer down by th...
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Well as far as I am concerned you are already starting off with a handicap, so I can't help you.
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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Re: Caltracs and backhalfed axle?
[Re: Georg]
#1016646
06/25/11 09:28 AM
06/25/11 09:28 AM
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Joined: Nov 2009
Posts: 2,177
ill
dennismopar73
top fuel
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top fuel
Joined: Nov 2009
Posts: 2,177
ill
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you are allowed 10% of wheel base, try not to go all the way, also , make youre tunnel bigg enough so you dont have to get long ext and ratchets to get trans bolts out,  also dont want to go back to far on the motor might have to get into the windshield ? as for how high./low the motor get , depends on where the rear sits, and angle of trans, never want the trans to go uphill, 0 or 2% down (really dont like 0), this is dictated by what ride height or stance you want to achieve? my motor is moved back 7" less than 10%, but my motor is as low as i can go without the trans up hill, and my oil pan, i cut up my k memeber is all i use is the bars i have an open area except for the rack/pinion, good luck
Last edited by dennismopar73; 06/25/11 09:46 AM.
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Re: Caltracs and backhalfed axle?
[Re: Georg]
#1016647
06/25/11 09:47 AM
06/25/11 09:47 AM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
thanks guys for answers. I have some questions more for you.
As I am going to make tubular chassie except front subframes there are many sides how to get best weight transfer, instant centre etc. This is all new stuff for me and I hope here is somebody who can lead me into right path. (I still going to use Caltracs in this project) I mean-explain how and why should I do this and this. Is there some good calculators what can help me?
As Iam going to make new firewall and floor also then Iam able to move motor quite a lot behind and so on...but how much is enough, what should be motor height? Is better to lower or raise motor with tranny etc. As you see, lot of questions (hopefully not too dumb ones)where I need help and hope to get answers. As this is not easy project then I want to make it work first time
I also trie to lower whole car as much as possible
As far as moving the engine back... try to get it at
least 50/50 on the weight(up to 48/52) as for the
height of it.. it will still be 50/50(or what ever
you build it at) BUT if the engine is higher in the
chassis it is closer to the CG height and is easier
to transfer the weight to the rear... what makes the
difference on the height is the amount of torque
the engine will make... higher amounts keep it low
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Re: Caltracs and backhalfed axle?
[Re: MR_P_BODY]
#1016648
06/26/11 11:09 AM
06/26/11 11:09 AM
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Joined: Sep 2005
Posts: 769
Europa, Estonia
Georg
OP
super stock
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OP
super stock
Joined: Sep 2005
Posts: 769
Europa, Estonia
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thanks guys.
I start with front K-frame and keep you posted.
What about front stabilizer bar? How unstable car is going to be without it?
One plan is to leave original control arms (maybe modify them and make them lighter), remove torosion bars and use 2-way adjustible front shocks
Last edited by Georg; 06/26/11 11:12 AM.
Outlaw Plymouth Valiant
R5/P7 Powered by Liuzzo Racing
COMP Performance Group dealer in Baltic
Premium Performance
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Re: Caltracs and backhalfed axle?
[Re: Georg]
#1016649
06/26/11 11:21 AM
06/26/11 11:21 AM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
thanks guys.
I start with front K-frame and keep you posted.
What about front stabilizer bar? How unstable car is going to be without it?
One plan is to leave original control arms (maybe modify them and make them lighter), remove torosion bars and use 2-way adjustible front shocks
If this is a drag car you dont want the front sway bar
it tends to slow movement in the frontend
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