Hotchkis Suspensions All Mopar Open House ****
This was really a special event where a vendor opened it's doors, really put a lot of effort, thought things out thoroughly, and it resulted in a first class experience.
Every participant I talked to felt it exceeded their expectations. I heard stuff like: "If I'd known it was going to be like this, I would have brought more of my mopar buddies". Or, "I wasn't planning on staying very long, but I changed my mind". Another asked, "Are they doing another one of these next year?"
The complete Hotchkis organization contributed in seminar from the owner John Hotchkis, to Aaron the head engineer, to Drew in technical sales support, to Dan in marketing. They gave a great explanation of alignment, suspension, and handling. Even if you weren't into the handling thing, there was something to learn about basic suspension.
As you can imagine. I had a clip board full of questions. I put them through the ringer and it didn't stop after the seminar.
Highlights:
Looking at the big picture: they are developing a complete suspension systems for Mopars called TVS. This will include items like front and rear springs, upper control arms, heim aluminum tube tie rods, heim strut rods, sway bars, and frame connectors. They are shooting for a $3000 price point without shocks. Their TVS systems are designed to be bolt on and give the best value for actual real world performance gained. Not a bunch of bling for the sake of being bling.
Asking about how they develop products: they have a complete R & D fabrication shop facility to test the products engineered with 3-D suspension analysis, CAD developed, and stress analysis. Once the geometries are figured on the computer they are tested and measured with the proper tools that I saw around their shop snooping around: items like scrub gauges, bump steer gauges, full laser alignment rack, etc to use on an actual car. That was very good to hear and see.
On the product front: within 90-120 days they will be releasing a bunch of new A-body products!! Look for lightweight hollow front and adjustable rear sway bars, leaf springs, frame connectors, and revised geometry upper control arms, to name a few items. Right now for A-bodies they have heim jointed outer tie rods for improved bump steer and large backspacing rims and adjustable hemi jointed strut rods.
Sneak peak into the future: look for a line of custom valved shocks around the 120 day range. I asked about price points and they are thinking 3 different performance and price levels. A $100/ea, $200/ea, and $400/ea shocks to match their TVS systems.
Let's see them sweat with a bunch of questions in front of 150 people :snakeman: -I grilled them with some mild and not so mild tech questions.
"Why did you take the anti dive out of the E-body upper control arms?" (Anti dive is angle of the upper A-arm viewed from the side)
-Hotchkis noticed a bunch of bump steer caused by the large amount of anti dive front geometry on the E and B bodies. They still have some anti dive geometry but it's not needed for the enthusiast driver and they can specifically design it just for an E-body. They've tested it on the street and track. -The amount of stock anti dive was needed to keep grandmas /6 station wagon and nose heavy 4,000 lbs hemi cars with drum brakes on a cold day fool proof and bound up a little when the least common denominator driver slams on the brakes. Remember the front end geometry on an Ebody is completely shared with a '71 426 Hemi Charger to a '72 loaded 400 cid Coronet Crestwood Station Wagon.
*BTW they said the A-bodies they tested have a lot less bump steer then the B and E bodies! :cheers: And they probably won't need much correction in the Upper A-arm, if any. Still developing...
"A lot of companies offered 4 links suspensions in the rear, what have you done with the leaf spring setup?"
-Hotchkis found that raising the front spring eye helped reduce roll steer in the rear. They also have special rear leafs that take advantage of Mopars superior short front, long rear segment springs. Just like they help at the drags, they help handling. Hotchkis has spring made with a stout front spring segment to resist twisting and wheel hop with the rear segement carrying the spring action. They said they are light weight than stock.
"By the way, if you just want to add a stock sway bar to a mopar you have to buy and install special $125 to $175 sway bar type lower control arms. You guys make those same brackets for only $30 that people could just weld on to their early or late lower control arms already on their car. Maybe you should have a product release just for those in the Magazines"
-"Uh... I guess that is a market for those. Funny you say that, a guy in Alabama or Arkansas has been buying tons of them." :munky2:
*Picture of the tabs: http://www.hotchkis.net/early_mopar_control_arm_bracket.html 73-76 style: http://www.hotchkis.net/late_mopar_control_arm_bracket.html
"Why do all the companies that offer greasable swaybar bushing put the zerk fitting at the very bottom where it can easily be broken off by road debris or a curb?"
-We'll look into that.
I did get their head engineer and autocross driver to drive my Cuda. That was cool. :-D
Video of event:
http://www.motorator.com/videos/799
71 Demon Hotchkis test car:
This was really a special event where a vendor opened it's doors, really put a lot of effort, thought things out thoroughly, and it resulted in a first class experience.
Every participant I talked to felt it exceeded their expectations. I heard stuff like: "If I'd known it was going to be like this, I would have brought more of my mopar buddies". Or, "I wasn't planning on staying very long, but I changed my mind". Another asked, "Are they doing another one of these next year?"
The complete Hotchkis organization contributed in seminar from the owner John Hotchkis, to Aaron the head engineer, to Drew in technical sales support, to Dan in marketing. They gave a great explanation of alignment, suspension, and handling. Even if you weren't into the handling thing, there was something to learn about basic suspension.
As you can imagine. I had a clip board full of questions. I put them through the ringer and it didn't stop after the seminar.
Highlights:
Looking at the big picture: they are developing a complete suspension systems for Mopars called TVS. This will include items like front and rear springs, upper control arms, heim aluminum tube tie rods, heim strut rods, sway bars, and frame connectors. They are shooting for a $3000 price point without shocks. Their TVS systems are designed to be bolt on and give the best value for actual real world performance gained. Not a bunch of bling for the sake of being bling.
Asking about how they develop products: they have a complete R & D fabrication shop facility to test the products engineered with 3-D suspension analysis, CAD developed, and stress analysis. Once the geometries are figured on the computer they are tested and measured with the proper tools that I saw around their shop snooping around: items like scrub gauges, bump steer gauges, full laser alignment rack, etc to use on an actual car. That was very good to hear and see.
On the product front: within 90-120 days they will be releasing a bunch of new A-body products!! Look for lightweight hollow front and adjustable rear sway bars, leaf springs, frame connectors, and revised geometry upper control arms, to name a few items. Right now for A-bodies they have heim jointed outer tie rods for improved bump steer and large backspacing rims and adjustable hemi jointed strut rods.
Sneak peak into the future: look for a line of custom valved shocks around the 120 day range. I asked about price points and they are thinking 3 different performance and price levels. A $100/ea, $200/ea, and $400/ea shocks to match their TVS systems.
Let's see them sweat with a bunch of questions in front of 150 people :snakeman: -I grilled them with some mild and not so mild tech questions.
"Why did you take the anti dive out of the E-body upper control arms?" (Anti dive is angle of the upper A-arm viewed from the side)
-Hotchkis noticed a bunch of bump steer caused by the large amount of anti dive front geometry on the E and B bodies. They still have some anti dive geometry but it's not needed for the enthusiast driver and they can specifically design it just for an E-body. They've tested it on the street and track. -The amount of stock anti dive was needed to keep grandmas /6 station wagon and nose heavy 4,000 lbs hemi cars with drum brakes on a cold day fool proof and bound up a little when the least common denominator driver slams on the brakes. Remember the front end geometry on an Ebody is completely shared with a '71 426 Hemi Charger to a '72 loaded 400 cid Coronet Crestwood Station Wagon.
*BTW they said the A-bodies they tested have a lot less bump steer then the B and E bodies! :cheers: And they probably won't need much correction in the Upper A-arm, if any. Still developing...
"A lot of companies offered 4 links suspensions in the rear, what have you done with the leaf spring setup?"
-Hotchkis found that raising the front spring eye helped reduce roll steer in the rear. They also have special rear leafs that take advantage of Mopars superior short front, long rear segment springs. Just like they help at the drags, they help handling. Hotchkis has spring made with a stout front spring segment to resist twisting and wheel hop with the rear segement carrying the spring action. They said they are light weight than stock.
"By the way, if you just want to add a stock sway bar to a mopar you have to buy and install special $125 to $175 sway bar type lower control arms. You guys make those same brackets for only $30 that people could just weld on to their early or late lower control arms already on their car. Maybe you should have a product release just for those in the Magazines"
-"Uh... I guess that is a market for those. Funny you say that, a guy in Alabama or Arkansas has been buying tons of them." :munky2:
*Picture of the tabs: http://www.hotchkis.net/early_mopar_control_arm_bracket.html 73-76 style: http://www.hotchkis.net/late_mopar_control_arm_bracket.html
"Why do all the companies that offer greasable swaybar bushing put the zerk fitting at the very bottom where it can easily be broken off by road debris or a curb?"
-We'll look into that.
I did get their head engineer and autocross driver to drive my Cuda. That was cool. :-D
Video of event:
http://www.motorator.com/videos/799
71 Demon Hotchkis test car:
