TPC or Tarrett toe links?
#2
Rennlist Member
I've purchased from Tarett in the past and have never had an issue. The new TPC links appear to be a step up. I've spoken with Tom about these and will most likely get a set. If you don't plan to do much if any tracking the Tarett set would be fine. Also if you don't want much over -1.5 degrees in back you could probably stick with stock. Add a set of Tarett's locks to keep the settings locked.
#3
Jury is still out on if the offset TPC link is really doing anything. Geometrically it is not obvious that it has any significant impact, and TPC won't share any real toe curve data over suspension compression to prove it.
I'm on the fringe of just drawing a suspension model myself to show the theoretical toe vs offset impact over compression.
I'm on the fringe of just drawing a suspension model myself to show the theoretical toe vs offset impact over compression.
#4
Nordschleife Master
I don't know much about suspensions and how they work, but TPC is very confident about their products and I would agree that the issues on the GT4 that they are trying to address with these products are real. If it were me, and I haven't purchased an aftermarket toe link yet, I would go with TPC.
#5
Rennlist Member
Jury is still out on if the offset TPC link is really doing anything. Geometrically it is not obvious that it has any significant impact, and TPC won't share any real toe curve data over suspension compression to prove it.
I'm on the fringe of just drawing a suspension model myself to show the theoretical toe vs offset impact over compression.
I'm on the fringe of just drawing a suspension model myself to show the theoretical toe vs offset impact over compression.
Draw it up! Should be easy in something like solidworks, no?
#7
Rennlist Member
I think Mike knows someone will copy his design and charge less. Before that happens I'm sure he would like to recoup his investment in time and resources.
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#8
Rennlist Member
It's not to make a point at all. It's just that these cars are complicated enough and some enthusiasts are close enough to their limits, that real engineering is required. I don't trust aftermarket unless I can directly see their data and work with them on the same level. There's a lot of snake oil in the aftermarket, reputation is meaningless. Numbers talk.
#9
I've purchased from Tarett in the past and have never had an issue. The new TPC links appear to be a step up. I've spoken with Tom about these and will most likely get a set. If you don't plan to do much if any tracking the Tarett set would be fine. Also if you don't want much over -1.5 degrees in back you could probably stick with stock. Add a set of Tarett's locks to keep the settings locked.
#10
I don't know much about suspensions and how they work, but TPC is very confident about their products and I would agree that the issues on the GT4 that they are trying to address with these products are real. If it were me, and I haven't purchased an aftermarket toe link yet, I would go with TPC.
#11
The sad thing is that if someone copies his design and publishes the toe curve, I'll buy the copy. However, if TPC publishes the toe curve (and it's enough of an improvement), I'll buy theirs, even if it's double the price and copies are available. It's not to make a point at all. It's just that these cars are complicated enough and some enthusiasts are close enough to their limits, that real engineering is required. I don't trust aftermarket unless I can directly see their data and work with them on the same level. There's a lot of snake oil in the aftermarket, reputation is meaningless. Numbers talk.
#12
I'd probably go with TPC. At a minimum its a try to see if it will help. I don't know how you guys would provide data on dynamic toe - its more than just a calculation, there's a whole model that needs to be put in place.
I have a hypothesis that the offset on the end (which probably has to be installed in a single direction) produces a slight angle (overall geometry setup of all points in the rear suspension) that creates a stiffer tie-rod which avoids power-on deviation when under lateral load (hard cornering). It would be helpful if we had a huge physics nerd that has a tremendous interest in Kinematic toe and functional toe control to explain the benefits.
Otherwise someone would have to test these rear toe links on a stock car vs the others. The car would need to be aligned exactly the same and taken to a race track the driver knows well. Then run laps using each and see if the data hows a difference. The stability in the rear should improve overall lap times. But who knows! Let's see if people can chime on their experiences.
I have a hypothesis that the offset on the end (which probably has to be installed in a single direction) produces a slight angle (overall geometry setup of all points in the rear suspension) that creates a stiffer tie-rod which avoids power-on deviation when under lateral load (hard cornering). It would be helpful if we had a huge physics nerd that has a tremendous interest in Kinematic toe and functional toe control to explain the benefits.
Otherwise someone would have to test these rear toe links on a stock car vs the others. The car would need to be aligned exactly the same and taken to a race track the driver knows well. Then run laps using each and see if the data hows a difference. The stability in the rear should improve overall lap times. But who knows! Let's see if people can chime on their experiences.
#13
Rennlist Member
I see and understand your position. I applaud the fact that you would pay more for the proven product. Sadly there are many that would buy the cheaper one. I've been on the short end of the intellectual property stick and it's not fun recouping your losses.
#14
I'm learning that there are nuances of this car that the late-to-the-game vendors are focusing on to make their products better. TPC rear toe links are an example. How much it impacts handling vs. cost is a function of your pursuit of perfection. Early adopters are kinda screwed in my experience so far. I'd go TPC.
#15
My guess is TPC doesn't actually have the quantitative toe data to share. Sharing the data would only increase sales and would have no impact on enabling copycats. I could see them doing some trial and error based on some assumptions and being convinced they could feel the differences on track with the offset. Not enough data for me, but I welcome the information and discussion should it become available.