As a follow up to the Trans Am engine build challenge automationgame.com/phpBB3/viewtopic.php?f=34&t=3689 I am opening this up for the new update by adding a car building challenge as well. There are 2 classes, with slightly differences in the rules, all engine types are allowed in each. Feel free to ask questions as I hope to get a bunch of good cars in this and perfect these rules for a future racing thread with times and a championship standing board.
****Rules (Remember these were special production engines but still road legal and sold to the public, the cars will also be modified road cars, this is a “Win on Sunday sell on Monday” style series.)
****Under 2000cc class
Engine RESTRICTIONS-
Year: 1966
Size: must be less than 2000cc
Man hours: less than 50
Total cost: less then $1300
MTBF: over 26000 Miles/42000 km
Economy: no less then 12%
Loudness: Less then 50
No race intake
No race exhaust
Model Restrictions-
Body style: no minimum wheelbase
Minimum weight: 1800lbs/817kg
No downforce undercarriage cladding
Maximum tire width: 7.2 inch/185mm
Maximum Gears: 5
Single clutch only
No AWD
No Quality Sliders
Must have at least standard safety
****Over 2000 class
-Engine Restrictions-
Year: 1966
Size: Must be less than 5000cc
Man hours: less than 75
Total cost: less then $1700 US
Economy: no less then 12%
Loudness: Less then 50
No race intake
No race exhaust
Model Restrictions-
Body style: minimum wheelbase of 106 in / 2692mm
Minimum weight: 2800lbs/1270kg
MTBF: over 26000 Miles/42000km
No downforce undercarriage cladding
Maximum tire width: 8.0 inch/205mm
Maximum Gears: 5
Single clutch only
No AWD
No Quality Sliders
Must have at least standard safety
[quote=“gt1cooper”]Also, didn’t the bigger cars run on 255 r15s?
You might also want to say only standard transmissions.[/quote]
I had seen widths cited between 6"-8" I went with the 8’s because we’ll need the grip without an LSD. 255mm sounds more like le mans than trans am but if you found a source for them however I’d love to check it out.
I’m not sure what you mean by standard, I am going to change it to single clutch.
This says that track was not allowed to be any wider than stock, which on regular tires for this car required 8"; however, they developed special tires that made them have a 10" footprint on 15 inch rims without widening the track. So many cars used 8", but there were no regulations about it; they just couldn’t have a wider track.
Guess I’ll be the first to give it a try @ the under 2000 class. For the chassis, I used a modified version of the chassis already used for the Kard 115 hot hatch. The TA chassis has extra downforce, hood scoop, new exhaust mounts and a special exclusive paint color.
The Kard 159 TA is powered by a purpose built 5.9L flatplane V8 producing 427HP through a 5-speed manual gearbox to give it a 0-62 MPH time of 5.94 seconds, with a top speed of 172.8 MPH and a quarter mile run of 13.62 seconds @ 117 MPH.
The chassis weighs a scant 2218 ib with a 60/40 weight distribution, cornering of 1.18g @ 53.7 MPH and a max roll angle of 2.13".
All this gives the car the ability to run the Airfield Test Track in only 1:27:30!
ahh… Wildcarrde that’s an excellent car, but there’s a problem, and the problem is totally mine. I missed a rather key element in my rules, the under 2000 class is meant to be under 2000cc engine size, I’m very sorry.
Haha, yeah… I thought you meant something about weight… though I didn’t understand why the lighter car had no capacity limitation when the larger chassis did. I realized what you meant after I went to the engine forum to post the engine there. I’ve almost finished a build for the over 2000cc category though, it’ll be up soon.
To introduce the new 7-series, KMW built a model to compete in the <5000cc Trans Am competition!
The KMW 750 TA is powered by a 5.0L flatplane V8 producing 454 HP which propels the car from 0-62HP in 6.3 seconds, the quarter mile in 14.1 seconds @ 111 MPH. The top speed of this car is 172 MPH.
The chassis is only 2800ib with a 60/40 weight distribution, and has a cornering ability of 1.17g @ 53.5 MPH. The max roll angle is 1.4" and braking from 62-0 MPH takes only 111"10’.
All this propels the 750 TA around the Airport Test Track in 1:28:53!
With that under 5000cc wheelbase requirement, only the huge sedan and the old BMW-esque coupe fits The other big coupe is 106.3, and I think that that one is closer to what we want. Could we use that one?
Following from the entry into the top tier, a pioneering second car has been designed for the under 2000 class, with a specific output of 100hp per 1000cc of displacement!
The other big coupe is 106.3, and I think that that one is closer to what we want. Could we use that one?
happy tuning.
