Guys with homemade flips, got a few questions...
11-08-2010, 01:14 PM
#11
You do not want your cal tracs to dictate your pinion angle. This will give you way too much preload on the spring and un-needed stress on the whole system. Get your angle right by either shimming or adjusting your perches accordingly. If your caltracs are properly adjusted the roller will barely touch the top of the leaf on one side, and about 1/16" gap between the roller and leaf on the other... You can adjust them from there for best results but do not tighten them so much it affects your pinion angle.
11-08-2010, 08:32 PM
#12
The right side should be a little tighter than the left giving it more preload but how much will vary with each vehicle's power and traction. Start out with your pinion angle at -3 and go from there. The caltracs will still allow your pinion to rotate, but uses that same force transferred from the bar, to the plate, to the roller, to the leafsprings to drive the tires into the pavement. The angle of the bar also determines your instant center... Which determines lift forces and PR (percentage of rise) on the front end. There's a lot more to getting a suspension to work than just the rear. Anti-squat is built into these bars just by how they are designed.
I've mentioned the other caltrac designs in other threads and how they are built differently. These have more adjustability and the ability to achieve better bar angles which in-turn applies different forces to the bars and finally the suspension and tires.
I've mentioned the other caltrac designs in other threads and how they are built differently. These have more adjustability and the ability to achieve better bar angles which in-turn applies different forces to the bars and finally the suspension and tires.
11-09-2010, 09:16 PM
#13
The right side should be a little tighter than the left giving it more preload but how much will vary with each vehicle's power and traction. Start out with your pinion angle at -3 and go from there. The caltracs will still allow your pinion to rotate, but uses that same force transferred from the bar, to the plate, to the roller, to the leafsprings to drive the tires into the pavement. The angle of the bar also determines your instant center... Which determines lift forces and PR (percentage of rise) on the front end. There's a lot more to getting a suspension to work than just the rear. Anti-squat is built into these bars just by how they are designed.
I've mentioned the other caltrac designs in other threads and how they are built differently. These have more adjustability and the ability to achieve better bar angles which in-turn applies different forces to the bars and finally the suspension and tires.
I've mentioned the other caltrac designs in other threads and how they are built differently. These have more adjustability and the ability to achieve better bar angles which in-turn applies different forces to the bars and finally the suspension and tires.
11-09-2010, 09:32 PM
#14
I wouldn't exactly call myself the "go-to" anything... I'm still learning every day. But since I've been in the build phase for an extended period of time with my project I have done a good bit of homework 
mainly to apply to mine when setting it up for it's first few outings and getting everything dialed in to get the best 60' time that x amount of power/traction/weight can achieve. Like I said, Ive learned a lot but I'm only scratching the surface of what I really need to have in my mental track library LOL
mainly to apply to mine when setting it up for it's first few outings and getting everything dialed in to get the best 60' time that x amount of power/traction/weight can achieve. Like I said, Ive learned a lot but I'm only scratching the surface of what I really need to have in my mental track library LOL
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