Re: adjustable front shocks or wheelie bars?
[Re: Plumcrazyracing]
#372481
07/11/09 09:42 PM
07/11/09 09:42 PM
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Joined: Apr 2006
Posts: 729 Lebanon,IN
mr2performance
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super stock
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Lebanon,IN
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Santhuffs are the only front a body shocks that work, are short enough, and last. Ask me how I know. Mike
MR2PERFORMANCE RACE CARS
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Re: adjustable front shocks or wheelie bars?
[Re: Plumcrazyracing]
#372483
07/11/09 10:53 PM
07/11/09 10:53 PM
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Joined: Apr 2006
Posts: 729 Lebanon,IN
mr2performance
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super stock
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thats 3.5 at the shock, not the front tire. They have plenty of travel. If your car is lower than stock you'll probably have around five inches or more of up travel. They work in anything from a low horsepower stocker to a full on pro mod. Mike
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Re: adjustable front shocks or wheelie bars?
[Re: Plumcrazyracing]
#372484
07/12/09 11:01 AM
07/12/09 11:01 AM
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Joined: Nov 2003
Posts: 672 Roanoke Va
gearjammerdart
mopar
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mopar
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Roanoke Va
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Quote:
gearjammer, what car do you have them on? The compressed length seems to be too long for my duster. I have the comp engineering 3 ways and have about one inch exposed shaft. The afco's are about an inch longer on the collapsed length. Do you have an opinion on this?
They are on my 69 dart. I used them with stock suspension and never had a problem. They also came with the cups for coilover springs which I now have. They respond to small changes IMO
Donald
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Re: adjustable front shocks or wheelie bars?
[Re: Plumcrazyracing]
#372487
07/12/09 01:17 PM
07/12/09 01:17 PM
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Joined: Jan 2003
Posts: 10,088 Frostbitefalls MN (Rocky&Bullw...
gregsdart
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I Live Here
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A lot depends on how hard you hit the back tires, and how much torque you will carry in the first 60 ft. If you have a deal like mine, the shocks give great control, ( AFCO doubles, no problems in ten years) but can't overcome the brutal torque that can dead lift the front end off the ground at will. If it were mine, I certainly would start with the double adjustable shocks, with a fairly stiff compression setting, mild extension setting to start. See how it goes, If you need more control in the extension setting, then try raising the instant center if possible, to initially push the front down on launch. That will slow the wheel stand, but depending on torque, might not be able to keep it where you want. A simple formula to figure out how much ability to lift the fronts, is; SLR x 2 (torque converter) times input torque. In my case it comes out to ;11.17 x 2 x 800 ft lbs = 17872 ft lbs x .90 (driveline loss)=16084 ft lbs at the axles. divide this number by 16 inch (tire radius) x 12inch and you get the torque at the tire surface =12063 ft lbs. My wheel base is 106 inch, divide by 12 = 8.83 feet. Take the torque of 12063, divide by 8.83 = 1366 lbs that my combo could DEAD LIFT. But I have springs helping it get a running start. My front weight is about 1350 unsprung, so you can get an idea why it hits the wheelie bars so hard it unloads the rear tires.
8.582, 160.18 mph best, 2905 lbs 549, indy 572-13, alky
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Re: adjustable front shocks or wheelie bars?
[Re: mr2performance]
#372490
07/12/09 02:34 PM
07/12/09 02:34 PM
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Joined: Dec 2008
Posts: 184 Central Coast
Plumcrazyracing
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OP
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Mike, after reading about the shocks adjustment procedure on the website, their adjustment procedure seems a little more involved as apposed to the 'click' procedure (referring to the rebound adjustment). Also seems like they have to be removed for additional adjustments. Can you shed any light on this? A reference that can compare the two would be much appreciated. Afterall, for over 4 bills per shock, I would like to get the best!! Steve
Last edited by Plumcrazyracing; 07/12/09 02:43 PM.
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Re: adjustable front shocks or wheelie bars?
[Re: Plumcrazyracing]
#372491
07/12/09 03:33 PM
07/12/09 03:33 PM
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Joined: Apr 2006
Posts: 729 Lebanon,IN
mr2performance
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super stock
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Lebanon,IN
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The adjustment procedure section of their website is actually referring to the procedure you have to do before you install them. Basically you put them vertical and move them up and down which moves all of the trapped air to the top. The extension and rebound adjustments are made by turning knobs. Nothing complicated at all. If you want the best, buy the Santhuff's. If you buy them and don't like them Ron will give you your money back, and he hasn't had to yet. Mike
MR2PERFORMANCE RACE CARS
765 483 9371
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Re: adjustable front shocks or wheelie bars?
[Re: mr2performance]
#372492
07/12/09 03:34 PM
07/12/09 03:34 PM
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Joined: Apr 2006
Posts: 729 Lebanon,IN
mr2performance
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super stock
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Hey, one of my customers may have some afco's that were used one season and have just been rebuilt. Mike
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Post deleted by Defbob
[Re: Plumcrazyracing]
#372493
07/12/09 03:50 PM
07/12/09 03:50 PM
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Anonymous
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Anonymous
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Re: adjustable front shocks or wheelie bars?
#372494
07/12/09 03:54 PM
07/12/09 03:54 PM
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Joined: Apr 2006
Posts: 729 Lebanon,IN
mr2performance
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super stock
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Lebanon,IN
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their website was a little confusing
MR2PERFORMANCE RACE CARS
765 483 9371
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Re: adjustable front shocks or wheelie bars?
[Re: Plumcrazyracing]
#372495
07/12/09 05:32 PM
07/12/09 05:32 PM
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Joined: Jan 2003
Posts: 10,088 Frostbitefalls MN (Rocky&Bullw...
gregsdart
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I Live Here
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Quote:
Very nice educated response. Thank you. I will do the math. However, i slightly understand instant center and have thought about trying the top hole on my cal tracs to move the instant center 'rearward'. Is this the same meaning as moving the instant center 'up'?
Basically, i don't know diddly about caltracs. But I do know this. If the instant center is above the neutral line, the nose of the car wants to go down for an instant, until everything takes a set ( rear suspension) then starts rising. This all happens so fast it is hard to record. If the instant center is set low, below the neutral line, the line of force is now below the Cg, dropping the rear of the car and trying to force the front up quickly. This gives a wheelstand a running start, something you are trying to tame down. You may find you need a lot more shock control out back to keep the rate of separation of the rear suspension slow.
8.582, 160.18 mph best, 2905 lbs 549, indy 572-13, alky
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