calvert leafs

vegas1974z28 · 05-10-2009, 11:05:36 PM

those stupid little clips broke that hold the front spring perch, now I have to wait for classic industries to send me new ones.

They weigh 24 lbs
stock leafs weigh 34.6 lbs

just the shocks and some 29's netted me 1.52 60's our DA was over 5000 feet so no good times to speak of. 10.94-11.04

jaywill · 05-11-2009, 04:52:57 AM

nice springs...lmk if they lower your car any...might have to try a set if they want lower my car.........

DO U HAVE THE CALTRACS???

vegas1974z28 · 05-11-2009, 11:07:56 AM

Quote:

Originally Posted by jaywill

nice springs...lmk if they lower your car any...might have to try a set if they want lower my car.........

DO U HAVE THE CALTRACS???

they have a 1in lowering spring, stock height, and 1 in raise.

Yes I have the caltracs, shocks and leafs now. The complete set up. Hoping for 1.4 60'

LILRED496 · 05-11-2009, 11:25:01 AM

Quote:

Originally Posted by vegas1974z28

they have a 1in lowering spring, stock height, and 1 in raise.

Yes I have the caltracs, shocks and leafs now. The complete set up. Hoping for 1.4 60'

You will get it:

Do you use a tranny brake?
It looks like the calvert springs made a difference for me I got a 1.450 with drs.
Have you set up your pinion angle?

vegas1974z28 · 05-11-2009, 11:43:55 AM

Quote:

Originally Posted by LILRED496

You will get it:

Do you use a tranny brake?
It looks like the calvert springs made a difference for me I got a 1.450 with drs.
Have you set up your pinion angle?

No. I don't understand the "pinion angle". I use a tranny brake, leave at 3000 now. I can feel the front tires leave the ground probably 6 inches or so. The car unloads the rears and they spin a little I can see it in the video.

Friday night I tried (without the leafs) rear shocks at 2 what calvert reccommended (1.55-1.56) 60' Then moved to setting of 5 1.52-1.54 Then to 9 1.57-1.58. Tire pressure At 13.5. Bars set on top rung, 1/4 preload.

My reaction times went to crap... .001, .005, .016, .016 all RED

LILRED496 · 05-11-2009, 05:21:51 PM

Quote:

Originally Posted by vegas1974z28

No. I don't understand the "pinion angle". I use a tranny brake, leave at 3000 now. I can feel the front tires leave the ground probably 6 inches or so. The car unloads the rears and they spin a little I can see it in the video.

Friday night I tried (without the leafs) rear shocks at 2 what calvert reccommended (1.55-1.56) 60' Then moved to setting of 5 1.52-1.54 Then to 9 1.57-1.58. Tire pressure At 13.5. Bars set on top rung, 1/4 preload.

My reaction times went to crap... .001, .005, .016, .016 all RED

Whats it leave like on the foot brake?
Setting up the pinion angle perfect can help plant the tires.
Do You have caltrac bars?

TNT · 05-11-2009, 06:44:29 PM

Pinion angle on a leaf spring car is all over the map while under power. Especially with the split mono's.

The hook then spin problem is a tough one. Some times if you hit the car with more power it maintains that intitial hook. If you can't do that then you are limited to suspension adjustments. Slowing down the rear separation then keeping it separated is the trick.

LILRED496 · 05-11-2009, 07:57:56 PM

Quote:

Originally Posted by TNT

Pinion angle on a leaf spring car is all over the map while under power. Especially with the split mono's.

The hook then spin problem is a tough one. Some times if you hit the car with more power it maintains that intitial hook. If you can't do that then you are limited to suspension adjustments. Slowing down the rear separation then keeping it separated is the trick.

I have yet to set my pinion angle.Are you saying its a waste of time if so I'm not gonna bother with it.
I thought the whole point of caltrac bars was to set up the pinion angle then adjust the preload to fine tune the hit?

74RAT · 05-11-2009, 09:09:41 PM

Quote:

Originally Posted by LILRED496

I have yet to set my pinion angle.Are you saying its a waste of time if so I'm not gonna bother with it.
I thought the whole point of caltrac bars was to set up the pinion angle then adjust the preload to fine tune the hit?

not necessarrily a waste of time at all. u-joints are really only meant to be used within about a 3*-4* angle max. otherwise they can load and unload the tires from the u-joints changing velocity at the higher pinion to driveshaft angles under load.

just that they're not constant velocity joints like a front wheel drive alxe uses. i.e.--- the u-joint caps attempt to change speeds slowing down and speeding up at the higher driveshaft to pinion angles. just the physics of how they work when angled alot.

you're just trying to get it to be within the range of 0*-1/2* to the positive side(pinion nose down to the driveshaft) under max power and load on launch,, but not above center (nose up),, and somehow try to keep it somewhat in that 3*-4* window after the power starts falling off some in the higher gears when the pinion yoke starts falling to the ground again from less force through multiplication of the gears.
hope it helps.
andy

jester1 · 05-12-2009, 08:01:45 PM

TNT is completely right. There is no traction device that will elimintate pinion rise or spring wrap up while on leafspring.
Does pinon angle affect the initial hit, yes. You just cant control it unless your running ladderbar or 4 link even though it will still move just not as much. How much depends on the power available and materials used.