CTR top speed 169MPH?

Patriots1959

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DmK

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Iā€™m just curious in what scenario you see yourself going more than 169? Also at those speeds my biggest concern would be tires...
 

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Iā€™m just curious in what scenario you see yourself going more than 169? Also at those speeds my biggest concern would be tires...
130 is about all I'm comfortable with at the high end on a good, known stretch of road. Anything north of that starts getting weird and super dangerous.
 

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While reviewing the specs for the 2021 Limited Edition CTR which I'm planning to win via that Honda/Omaze contest I noticed the top "rated" speed remains at 169MPH. Ever wonder why? The vid below does not mention the CTR at all however it does help explain automakers challenges to build faster cards - interesting nonetheless. Check it out!: Why it's almost impossible for cars to go 300 miles per hour (yahoo.com)
might be the legal speed rating for the tires included with it (i believe speed rating W is 169)
 

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The CTR has always been drag limited at 169 MPH. Keep in mind that doubling the top speed requires 4x the energy to do.
 


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Patriots1959

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Iā€™m just curious in what scenario you see yourself going more than 169? Also at those speeds my biggest concern would be tires...
I'm just looking at the stats - researching comparisons to other cars. And drooling over the 2021 model. I have no interest in driving that speed due to the obvious risks on highways or any road. The fastest I've taken my CTR is about 105ish for a min or so. On that note Its amazing how easily it gets to 100+ and how smooth a ride it is.
 

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I couldn't imagine how much road you'd need. Going down a hill. With a tail wind. Lmao

After 130mph you're top of 5th I believe or close. From 130 to 140 feels like forever and beyond that feels like I'm driving my wife's Mazda 3.
 

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In case anyone wanted to see how long it took, about a 1:06. He hits 175 MPH though.
 

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In case anyone wanted to see how long it took, about a 1:06. He hits 175 MPH though.
Prolly 250whp after all that heat soak. He did it tho
 


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The CTR has always been drag limited at 169 MPH. Keep in mind that doubling the top speed requires 4x the energy to do.
this is not correct. the hp required to go faster and faster is way more than quadrupled. to go 338 mph (double the current top speed with 306 flywheel hp) with the same drag in our CTRs? I couldn't even hazzard a guess as to how much engine power it would take, but it would be way WAY over 1200 hp. I'd guess maybe 2500+ hp (and proper gearing of course).

a rough example would be a C7 Corvette; a base model with 460 hp at flywheel can do around 185 mph (drag not gear limited). a C7 ZR1 with the low wing (non ZTK low drag configuration) with 755 flywheel hp can do 212. that's not quite double the hp for a gain of 27 mph top speed. it takes IMMENSE amount of power to push the top speeds up significantly.

all that being said? the fact that our FWD hot hatches can in fact get to nearly 170 mph top speed is phenomenal! :)
 

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this is not correct. the hp required to go faster and faster is way more than quadrupled. to go 338 mph (double the current top speed with 306 flywheel hp) with the same drag in our CTRs? I couldn't even hazzard a guess as to how much engine power it would take, but it would be way WAY over 1200 hp. I'd guess maybe 2500+ hp (and proper gearing of course).

a rough example would be a C7 Corvette; a base model with 460 hp at flywheel can do around 185 mph (drag not gear limited). a C7 ZR1 with the low wing (non ZTK low drag configuration) with 755 flywheel hp can do 212. that's not quite double the hp for a gain of 27 mph top speed. it takes IMMENSE amount of power to push the top speeds up significantly.

all that being said? the fact that our FWD hot hatches can in fact get to nearly 170 mph top speed is phenomenal! :)
You're right, power varies with the cubic of the velocity (P = Ā½ACĻv^3) after accounting for drag. So 2x velocity requires 8x the power. So the Type R would need just a smidge under 2500 HP to go double the speed (assuming this added power doesn't increase weight).

Going back to the ZR1 example, the 185 -> 212 denotes a velocity increase of 15% (1.15). Using P ~= v^3 we get the additional power requirement should be 1.52x higher, or about 691 HP. However, the car also weighs an additional 200 lbs, or about 6.4%. Assuming top speed is linear with weight as well, we'd get about 736 HP for the ZR1 to hit that speed. So there is about a 20 HP difference. The difference could be error in measurement, powertrain losses, or additional drag losses.
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