Question about adding wheel extenders to the rear of my mbx-5 on road project

[DwightSchrute]

Originally Posted by suicideneil

I believe the wider rear tyres is down to a traction related issue (same with overpowered 1:1 cars whether 2 or 4 wheel drive). Offset is definately to do with stabilty- narrower will turn better, wider is more stable, all other things being equal (servo, tyres, steering throw).

back in the 80's when i was racing road course, i was racing the RC10L pan car.....it turned better because it was wider...or so everyone thought. Team Associated then came out with a narrower version called the rc10LSS (superspeedway version for banked ovals). if wider was more stable then why would associated make it so slender? also, then why are dragsters so thin and funny cars and F1 cars as well.... and the mclarens GTP's wider that run road course?

[transtalon]

I know based on my buggy which is built for top speed that with the extended wheel hex it was more stable at high speed and it sure does not rollover like before. I am running a 43spur/25 pinion, 80 mm 2000kv medusa,
6S 5000 flightpower Evo25, and a PMT rally tires which is the best on road tires I have use. It doesn't balloon up and it gets softer like a drag slick after a couple of speed pass.

[suicideneil]

Originally Posted by DwightSchrute

back in the 80's when i was racing road course, i was racing the RC10L pan car.....it turned better because it was wider...or so everyone thought. Team Associated then came out with a narrower version called the rc10LSS (superspeedway version for banked ovals). if wider was more stable then why would associated make it so slender? also, then why are dragsters so thin and funny cars and F1 cars as well.... and the mclarens GTP's wider that run road course?

Dragsters are skinny because of areo dynamics I would guess- slip though the air more easily being narrow, getting most of the down force from the wings; they do roll over and flip quite easily I have noticed though, so its a trade off between stability and missile-like shape & acceleration.

Perhaps Associated introduced the narrower vehicle becuase they felt it didnt need to be so wide as was still perfectly stable at the same time?

One thing to think about is that longer or shorter a-arms wont make a vehcile handle any shaper neccessarily (buggy vs truggy) duw to the actual pivot point of the wheels; adding axle extensions forces out the wheels but the pivot point is still at the knuckle, adding extra strain on the steering.

Im not a car designer though, its all just principles and how I see things working- performance tweaks on this scale isnt too important to a basher like me, I just want a strong vehcile that can turn around in a field at least...

[DwightSchrute]

Originally Posted by suicideneil

Dragsters are skinny because of areo dynamics I would guess- slip though the air more easily being narrow, getting most of the down force from the wings; they do roll over and flip quite easily I have noticed though, so its a trade off between stability and missile-like shape & acceleration.

Perhaps Associated introduced the narrower vehicle becuase they felt it didnt need to be so wide as was still perfectly stable at the same time?

One thing to think about is that longer or shorter a-arms wont make a vehcile handle any shaper neccessarily (buggy vs truggy) duw to the actual pivot point of the wheels; adding axle extensions forces out the wheels but the pivot point is still at the knuckle, adding extra strain on the steering.

Im not a car designer though, its all just principles and how I see things working- performance tweaks on this scale isnt too important to a basher like me, I just want a strong vehcile that can turn around in a field at least...

makes more sense to me now. i guess that's why they kept the narrow design when touring cars started to come out. thanks