Hi I'm new. I saw some questions posted a while ago on this forum about the fiberflex kit and that's how I found you guys. Nice to see a forum for utah the real reason the jeep was created
Anyway. There has been a lot of contraversy about this product. I have this kit. And here is what I know and my experience.
The fiberglass is pressurized while it is still a soft resin at 25,000 psi into its mold. That is the source of it's strength. It holds up well when hitting rocks. The creator is Kurt Hildebrand form Wyoming. He runs an LT1 motor. They have done significant testing and made variations before they released the current springs for production. Teraflex does not do the manufacturing of the fiberglass. But they are drilled for the center pin and the modular ends are installed at teraflex. This is simply a product they assemble and distribute.
I've been jeeping for ten years now and am yet to find a leaf setup that performs as well. The biggest advantage for crawling is the lack of bounce and wheel hop tires stay planted on the ground even when high torque is applied on a steep climb. In many instances I would prefer them over coils. This is why I am writing this. I want them to sell and stay in production so I can buy more for future builds.
The final product soft rate springs provide exeptional arcticulation. I ramped 700 at the tera show, But I only weighed in at 3350. With more weight the RTI would have increased. An old Flatty 3b with the same springs ramped 750 He was low and his bump stops only allowed for 4 inches of up travel he was also SUA in hhis old flatty. He had alot of droop.
My RTI is not super impressive, but most of us know that RTI arc and trail arc are different. The springs are light. They are silent. The Modular spheric ends are really nice for allowing no friction droop thus making the down travel pressured down travel good for traction. I bury my 35 toyo's with 6 inches of lift. 5 spring. 1 body. I droop to the end of my shocks fornt and rear. the only way I can get more droop is if I install a different shock setup.
Axle wrap. Running an LS-1 at 350-370 hp I do wrap a small amount. I get about an inch to an inch and a half of pinion up travel. But the differnce is that the wrap dosen't make the back end bounce. It wraps a little in high torque situations and rebounds when torque is gone instead of bouncing. So the draw back of axle wrap in a trail situation does not apply. Axle wrap won't occur in the case of most Jeeps.
I might install an anti wrap bar so I can really lay down the hammer without even wondering if I might knock a ujoint, but I been pretty heavy footed at times and haven't need it yet. I feel they are worth the price of 240 per spring. If I could do it again I would get a different steer setup where the tie rod is either behind or above the spring. But the tera kit has been good so far. If you have a high torque motor, I would put your pinion 3 degrees below straight to the output shaft just to be extra sure you don't knock a joint. If running a 4.0 I would never worry about an anti wrap bar unless your crawl ratio is ridiculous and you run high rpms and really big tires.
If you have any questions feel free to ask. I'm hoping composite tech continues to come into the lift market. I was very skepticle, I took me 4 months and several drives in a fiberflex jeep before I was willing to throw down 2.3k for the entire kit with all the accesories. I hope someone ends up making carbon fiber springs with a sheet of metal wrapped into the bottom for the bombproofing needed in a rock racing buggy someday. The fiberglass can take a severe beating, as crazy as it sounds I would bet on it out lasting metal springs,but I want something even stronger someting I can roll off a twenty foot cliff and not even check for damage, but I don'tkknow if that is possible. I feel the no hop characteristics are the next step in off road suspension and this can only be acommidated using composites. It would be cool to see a coil from carbon fiber too. This wasn't possible in the past, but composite tech continues to improve each day. Maybe someone will figure it out.
Here are a few pictures of my rig so far. Down on pritchett.
Anyway. There has been a lot of contraversy about this product. I have this kit. And here is what I know and my experience.
The fiberglass is pressurized while it is still a soft resin at 25,000 psi into its mold. That is the source of it's strength. It holds up well when hitting rocks. The creator is Kurt Hildebrand form Wyoming. He runs an LT1 motor. They have done significant testing and made variations before they released the current springs for production. Teraflex does not do the manufacturing of the fiberglass. But they are drilled for the center pin and the modular ends are installed at teraflex. This is simply a product they assemble and distribute.
I've been jeeping for ten years now and am yet to find a leaf setup that performs as well. The biggest advantage for crawling is the lack of bounce and wheel hop tires stay planted on the ground even when high torque is applied on a steep climb. In many instances I would prefer them over coils. This is why I am writing this. I want them to sell and stay in production so I can buy more for future builds.
The final product soft rate springs provide exeptional arcticulation. I ramped 700 at the tera show, But I only weighed in at 3350. With more weight the RTI would have increased. An old Flatty 3b with the same springs ramped 750 He was low and his bump stops only allowed for 4 inches of up travel he was also SUA in hhis old flatty. He had alot of droop.
My RTI is not super impressive, but most of us know that RTI arc and trail arc are different. The springs are light. They are silent. The Modular spheric ends are really nice for allowing no friction droop thus making the down travel pressured down travel good for traction. I bury my 35 toyo's with 6 inches of lift. 5 spring. 1 body. I droop to the end of my shocks fornt and rear. the only way I can get more droop is if I install a different shock setup.
Axle wrap. Running an LS-1 at 350-370 hp I do wrap a small amount. I get about an inch to an inch and a half of pinion up travel. But the differnce is that the wrap dosen't make the back end bounce. It wraps a little in high torque situations and rebounds when torque is gone instead of bouncing. So the draw back of axle wrap in a trail situation does not apply. Axle wrap won't occur in the case of most Jeeps.
I might install an anti wrap bar so I can really lay down the hammer without even wondering if I might knock a ujoint, but I been pretty heavy footed at times and haven't need it yet. I feel they are worth the price of 240 per spring. If I could do it again I would get a different steer setup where the tie rod is either behind or above the spring. But the tera kit has been good so far. If you have a high torque motor, I would put your pinion 3 degrees below straight to the output shaft just to be extra sure you don't knock a joint. If running a 4.0 I would never worry about an anti wrap bar unless your crawl ratio is ridiculous and you run high rpms and really big tires.
If you have any questions feel free to ask. I'm hoping composite tech continues to come into the lift market. I was very skepticle, I took me 4 months and several drives in a fiberflex jeep before I was willing to throw down 2.3k for the entire kit with all the accesories. I hope someone ends up making carbon fiber springs with a sheet of metal wrapped into the bottom for the bombproofing needed in a rock racing buggy someday. The fiberglass can take a severe beating, as crazy as it sounds I would bet on it out lasting metal springs,but I want something even stronger someting I can roll off a twenty foot cliff and not even check for damage, but I don'tkknow if that is possible. I feel the no hop characteristics are the next step in off road suspension and this can only be acommidated using composites. It would be cool to see a coil from carbon fiber too. This wasn't possible in the past, but composite tech continues to improve each day. Maybe someone will figure it out.
Here are a few pictures of my rig so far. Down on pritchett.
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