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Search: Keyword(s): ; Posts Made By: randycat99
Forum: 2015-? R/T & RT Plus Specific   01-26-2015, 09:10 PM
Replies: 42
Views: 1,881
Posted By randycat99
DP (please delete)

DP (please delete)
Forum: 2015-? R/T & RT Plus Specific   01-26-2015, 09:10 PM
Replies: 42
Views: 1,881
Posted By randycat99
Here's the kicker...if you are...

Here's the kicker...if you are throttling/steering for a bit of on-power oversteer, you can actually get the outer wheel to slip first (you need to at least press the Mr. Squiggly traction button...
Forum: 2015-? R/T & RT Plus Specific   01-26-2015, 07:55 PM
Replies: 42
Views: 1,881
Posted By randycat99
Nobody said they are "equal". Whether or not the...

Nobody said they are "equal". Whether or not the capabilities of an lsd actually come into use or not is the real question. You can't just assume the lsd will be an improvement. If the open-diff...
Forum: 2015 R/T Scat Pack 392   01-26-2015, 02:43 PM
Replies: 53
Views: 2,053
Posted By randycat99
If the critical detail here is the anti-drone...

If the critical detail here is the anti-drone effect, then the test conditions of particular interest (to evaluate a sound difference) should at least include the drone range for these cars. That...
Forum: 2015-? R/T & RT Plus Specific   01-26-2015, 02:10 PM
Replies: 42
Views: 1,881
Posted By randycat99
It's either heat in the brakes or heat in the...

It's either heat in the brakes or heat in the friction discs inside an LSD. Either way, it still ends up being heat, to make the desired behavior occur.

Personally, I've never experienced...
Forum: 2015-? R/T & RT Plus Specific   01-26-2015, 01:57 PM
Replies: 42
Views: 1,881
Posted By randycat99
You guys just need to try this out for yourself...

You guys just need to try this out for yourself and see what happens.

I suspect you will find that lsd is not even necessary when launching hard in a straight line on an irs-based car. Either...
Forum: Performance Modifications   01-25-2015, 02:04 PM
Replies: 12
Views: 431
Posted By randycat99
Here is a sample of my car (auto RT, 12"...

Here is a sample of my car (auto RT, 12" glasspack bullets, modified rear resonators), sampled with an actual audio capture device (not a cellphone) at the rear bumper location:

Playing: bumper...
Forum: Performance Modifications   01-25-2015, 12:25 PM
Replies: 12
Views: 431
Posted By randycat99
Are Cherry Bombs a kind of straight-thru,...

Are Cherry Bombs a kind of straight-thru, glasspack muffler? If so, that is the setup I have, except just generic glasspack bullet mufflers + original rear resonators.

The reason you want to...
Forum: General Challenger Discussion   01-24-2015, 06:49 PM
Replies: 62
Views: 2,586
Posted By randycat99
The loss factor can be drastically different when...

The loss factor can be drastically different when under load. I don't think spinning the shaft by hand indicates much.
Forum: General Challenger Discussion   01-24-2015, 09:25 AM
Replies: 62
Views: 2,586
Posted By randycat99
There are always parasitic losses. It may not be...

There are always parasitic losses. It may not be the same typical percentage...could even be less, but there are always parasitic losses. It's a mechanical device. There is still rotational...
Forum: General Challenger Discussion   01-23-2015, 09:40 PM
Replies: 62
Views: 2,586
Posted By randycat99
...because of the intersection of hp and torque...

...because of the intersection of hp and torque curves, right? That is a good point, and that did slip my mind.

Either that is correct, or there is something fishy about the scaling of either hp...
Forum: General Challenger Discussion   01-23-2015, 04:12 PM
Replies: 9
Views: 384
Posted By randycat99
Interesting perspective about 1969 prices and...

Interesting perspective about 1969 prices and inflation! I was born right after that, so this is a unique experience for me to come in 2015. I don't even have a concept of "15 ct gas". That just...
Forum: General Challenger Discussion   01-23-2015, 01:38 PM
Replies: 62
Views: 2,586
Posted By randycat99
Is it possible a Mustang dyno (the particular way...

Is it possible a Mustang dyno (the particular way that load is generated for this kind of dyno) is not that accurate/predictable at low roller speeds? So we get a measured torque curve that looks...
Forum: General Challenger Discussion   01-23-2015, 01:18 PM
Replies: 62
Views: 2,586
Posted By randycat99
Certainly, it would be nice to have contant...

Certainly, it would be nice to have contant torque "forever", but there are always limits. The torque can only be so high, and it can only go for so long. Then it will drop. Most engines will drop...
Forum: General Challenger Discussion   01-23-2015, 11:35 AM
Replies: 62
Views: 2,586
Posted By randycat99
Correct, but hp is hp. "Power" is the inherent...

Correct, but hp is hp. "Power" is the inherent combination of acceleration plus high velocity (where both are required to actually win a race). It is the embodiment of the "area under the curve"...
Forum: General Challenger Discussion   01-22-2015, 11:45 PM
Replies: 62
Views: 2,586
Posted By randycat99
It's "only" 691 hp, but it's also constant hp...

It's "only" 691 hp, but it's also constant hp from 5000-8600 rpm (if it correlates to the architecture in their original rwd version). That's probably the "catch" to it, that makes it more venerable...
Forum: General Challenger Discussion   01-22-2015, 09:58 PM
Replies: 62
Views: 2,586
Posted By randycat99
I think we have all been on the same page that...

I think we have all been on the same page that the HC driver did not execute properly in the vid. I guess what I'm really implying is that even if it was executed perfectly, it still may have been a...
Forum: General Challenger Discussion   01-22-2015, 09:26 PM
Replies: 62
Views: 2,586
Posted By randycat99
The auto SRT8 and auto HC actually have a strong...

The auto SRT8 and auto HC actually have a strong start in first gear, against the P85D (awd Tesla), but the P85D strikes back for a short moment while the SRT8/HC utilize 2nd and 3rd gear. The...
Forum: General Challenger Discussion   01-22-2015, 08:46 PM
Replies: 62
Views: 2,586
Posted By randycat99
Here's my update to what I started earlier...

Here's my update to what I started earlier today...this time with numbers exhaustively crunched to account for torque, weight, and gearing:
...
Forum: General Challenger Discussion   01-22-2015, 02:37 PM
Replies: 62
Views: 2,586
Posted By randycat99
It doesn't have a "gearbox", but there is a...

It doesn't have a "gearbox", but there is a single reduction stage that would essentially be an "axle ratio". That's the trick to this, and the ramification is significant (vs. a "true" 1:1 direct...
Forum: General Challenger Discussion   01-22-2015, 01:01 PM
Replies: 62
Views: 2,586
Posted By randycat99
Looks like this is the additional piece of info...

Looks like this is the additional piece of info to proceed:

AWD version
Torque
P85D: 687 lb-ft (244 lb-ft front, 443 lb-ft rear)

Electric Motor Output
P85D: 691 hp (221 hp front, 470 hp...
Forum: General Challenger Discussion   01-22-2015, 11:51 AM
Replies: 62
Views: 2,586
Posted By randycat99
Here are some more specs on the Tesla...these are...

Here are some more specs on the Tesla...these are actually for the 2013, and I understand the model that is being discussed in this topic is a newer awd model, iirc? This data at least gives us a...
Forum: SRT Hellcat 6.2L Supercharged (2015 - )   01-22-2015, 10:29 AM
Replies: 14
Views: 1,427
Posted By randycat99
Does anybody know if the oem rear camber specs...

Does anybody know if the oem rear camber specs are the same between these 2 cars, or entirely different? I'm curious, now. Normally, I would expect they would use the exact same alignment, but I...
Forum: SRT Hellcat 6.2L Supercharged (2015 - )   01-21-2015, 04:15 PM
Replies: 21
Views: 1,664
Posted By randycat99
I've seen that before, but I come to the same...

I've seen that before, but I come to the same conclusion...maybe there shouldn't be any shame in using that? Not even real everyday v8's sound that good, but there is no denying that you can't help...
Forum: SRT Hellcat 6.2L Supercharged (2015 - )   01-21-2015, 02:41 PM
Replies: 56
Views: 5,181
Posted By randycat99
That is a good point...the shorter 1st gear in...

That is a good point...the shorter 1st gear in the ZF-8, combined with the taller rear axle, does have the side effect of intensifying the load at the driveshaft while relieving the load (sort of) on...
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