1141LikesCan-Am RC Series
11-27-2018, 10:35 AM - Wikipost
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09-23-2018, 04:40 PM
#482
Tech Master
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Join Date: Nov 2001
Location: Land of high taxes and bad football
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Thank you Mike for getting the Can-Am motor package started. I just spent 3 days racing with no concern over a stator.....or a rotor.....or timing......or gearing.The racing was close and all the cars were the same speed. I cannot wait for the HC!
09-24-2018, 10:08 AM
#487
There's a whole lot more wheelspin with FWD. I'm running a much taller gear on my FWD 21.5 versus my 4wd 21.5 cars. I believe, with the same ratios, there is absolutely no chance of FWD playing the same game as AWD. USGT rules have no minimum weight limit on FWD... so there's some sort of fighting chance there.
09-24-2018, 10:35 AM
#488
There's a whole lot more wheelspin with FWD. I'm running a much taller gear on my FWD 21.5 versus my 4wd 21.5 cars. I believe, with the same ratios, there is absolutely no chance of FWD playing the same game as AWD. USGT rules have no minimum weight limit on FWD... so there's some sort of fighting chance there.
you run a taller gear on your fwd to try to take advantage of the hp/weight ratio but its costs you acceleration and traction im 97% sure with a fwd car i could go same speed with a 4wd with the same motor/gear setup
09-24-2018, 10:52 AM
#489
if you ask me thats where FWD setup goes wrong .... it needs to be the same weight as the other cars it just needs 85%of it on the front wheels so there isnt any wheel spin then lap times might just be even faster due to more corner speed ....
you run a taller gear on your fwd to try to take advantage of the hp/weight ratio but its costs you acceleration and traction im 97% sure with a fwd car i could go same speed with a 4wd with the same motor/gear setup
you run a taller gear on your fwd to try to take advantage of the hp/weight ratio but its costs you acceleration and traction im 97% sure with a fwd car i could go same speed with a 4wd with the same motor/gear setup
As I understand it, the gearing limits are to "save motors." With FWD having a lower load on the motor, a higher gearing ~should~ be allowed. At least if the idea is to still attempt to encourage FWD cars. It may not be, and... that's a thing too.
09-24-2018, 11:02 AM
#490
This isn't the place for it, but that line of logic doesn't work out. The biggest thing to note, is the traction doesn't scale evenly with load. If you double the load on a tire, you don't get double the traction. If you wanna bring it up in the USGT thread, that would be an ideal place or it. :-)
As I understand it, the gearing limits are to "save motors." With FWD having a lower load on the motor, a higher gearing ~should~ be allowed. At least if the idea is to still attempt to encourage FWD cars. It may not be, and... that's a thing too.
As I understand it, the gearing limits are to "save motors." With FWD having a lower load on the motor, a higher gearing ~should~ be allowed. At least if the idea is to still attempt to encourage FWD cars. It may not be, and... that's a thing too.
i didnt really mean it had to be 1380 just with the canam motor and lets say 1250 grams a fwd will accelrate faster and have more top speed than a fwd @1380 . i agree on the traction for load tho to a point
09-24-2018, 08:16 PM
#492
120g for a body, 50g for wheels, and tires, 150g for the motor, 170g for the motor.. You have around 240g for a chassis. USGT mandates independent suspension, so that's gonna be a tall order. Got a chassis in mind? ;-)
09-24-2018, 11:59 PM
#494
I know he did. That's where my sarcastic accounting of weight came in to play. ;-) He thought he was being clever, I called him out on it with math. We don't know if he got my parry to his thrust. Hopefully he's chuckling along with me.
My question was direct, and only appropriate in the can-am thread. The answer to gearing in plain USGT, is you use taller gears. :-) It's so far, unanswered. Really this is me looking to see if the rules loophole i'm trying to make good use of, is still going to be useful in CanAm GT. It's not an angle most people pursue, so I suspect it wasn't considered.
I could do that next week... I think. We'll see how ambitious I get between heats at the races. If they want "interesting" fields. They'll consider making a concession to the FWD people. But who knows.
If you guys wanna talk different usgt formats -- why don't you use that tread please.
If you have actually test data from any under geared motor in a 4wd and then a fwd car please share.
