Cant do that!

[Guest]

Now I am sure some of you fellas have done this even if you don't want to admit it.

So PM me if you don't want to post it here.

Has anyone here built a car with the rears canted positively?

A gut feeling tells me that 5 Kids has done this but this is based on nothing but gut.

Thanks,

 

[Kinser Racing]

I know of someone that did and it was a fast car.

 

[Kinser Racing]

Sometimes breakthroughs come from accidents.

 

[MOFAST]

I did it once a couple of years ago on accident and it was slooow. I built 8 cars with my boys, they each raced off their 4 cars and raced the fastest one at scouts. Somewhere I got distracted and goofed up. It was still faster than 90% of the pack.

 

[Guest]

Thanks Chris,

Congrats again on the street pro win but next month I expect an SS title from you too!

In terms of a scout builder or otherwise:

I guess you never know with this stuff right? What is good for one builder is bad for another.

Track, builder they all make a difference.

Ok. Here I go.

With a standard 5 Kids build (my own personal title for it)

One has a 1/16" indent on the DFW and canted rears at 3*

This brings the width of the rears to about 2.625" at the bottom outer edge of the rear wheels.

So the car can actually be stretched by .06" on each side and still fall within the rules of 2.75" wide.

Now let's flip the script.

Let's put our 5 Kids car upside down.

This give us a clearance of 1.75 between the rails with positive cant in the rears.

Push it out .06" on each side, to fill the maximum allowable width of 2.75" and we have nearly nearly .225" clearance between the rails with positive cant in the rears.

With good alignment isn't this more than enough room to avoid the rails with the rears?

If they do touch the rails it will be rolling instead of sliding friction.

Just a thought. I realize that there will be more fgriction near the inner bore since it will be on the body instead of the head, but I cant help wondering these things.

 

[Guest]

Oops! I just remembered that it would only be rolling friction with positive toe in the rears!

Otherwise it would be sliding friction!

Still

Regardless, any thoughts on the topic are greatly appreciated!

Thanks

 

[ngyoung]

If it got thrown off for any reason and did hit the rail it would have a lot of space for the rear end to fishtail back and forth.

 

[Guest]

If it got thrown off for any reason and did hit the rail it would have a lot of space for the rear end to fishtail back and forth.

You got that backwards NG.

It is more like a set of bearings traveling down a rail.

Real tight.

All wheels positive cant.

Although, I am still curious about the raised one with this setup.

 

[ngyoung]

I think I am just visualizing what you're describing wrong when you are talking about pushing the wheels out more.

 

[Guest]

Oh I can hardly wait to hear what BR has to say!

 

[Guest]

I think I am just visualizing what you're describing wrong when you are talking about pushing the wheels out more.

it is tough to visualize.
It is the complete opposite of normal.
With the exception of the DFW.

 

[bracketracer]

Oh I can hardly wait to hear what BR has to say!

Now Joe, I thought we had already proven that there is less drag with the wheel riding against the axle head? But there's something even faster than riding the axle head.

If you widen the body then you have increased the frontal area, that's usually a speed killer. "Thin to win" is a three dimensional rule.

Why is it that people have no qualms about running 6+ degrees of bend in the DFW axle but stop at 3 degrees in the rear?

I think it was Chief that had a car named Both Sides Up or BOSU if my memory serves me correct.

 

[Guest]

Oh good! Riddles!

Ok Br,

Sometimes it is fun to free yourself from the burdens of reality and let your mind wander.

Ok. I'll bite. What is faster than the nail head?

I suspect sarcasm so don't say Sally Hansen?

The wider profile thing is really just a general rule meant for scout dads in my opinion.

Is a boat with pontoons slower?

You have me stumped on the last one though. I give up.

Why?

I can't find Chief's car. it sounds interesting.

 

[Guest]

I know of someone that did and it was a fast car.

Who Chris?

Why don't others do it?

Thanks,

 

[bracketracer]

Oh good! Riddles!

Ok Br,

Sometimes it is fun to free yourself from the burdens of reality and let your mind wander.

Ok. I'll bite. What is faster than the nail head? The answer is posted on this site, but another racer and I found it by accident weeks earlier. I was kinda bummed to see it posted since I thought we found something new, only to realize it was already "common knowledge"! lol!

I suspect sarcasm so don't say Sally Hansen? Nope, not her!

The wider profile thing is really just a general rule meant for scout dads in my opinion. Mmmm, I don't know about that!

Is a boat with pontoons slower? Slower than a go-fast boat, yes. Are you entering the Raingutter Regatta? /images/boards/smilies/smile.gif
Thanks!, now I have that song stuck in my head......On the pontoon....makin' waves and catchin' rays up on the roof......

You have me stumped on the last one though. I give up. You gave up too easy! Build a test car and see! Just make sure your drill is dead on so it doesn't get too much toe. A steep drill angle will amplify a toe error the same way that a large bend in the DFW axle makes a car touchy on adjusting steer.

Why?

I can't find Chief's car. it sounds interesting. I think the story was that the car wasn't clearly marked as to which side was the top, so it was inadvertently run upside down. I don't remember it being any slower. If I have the story wrong maybe someone that knows will correct me!

 

[5KidsRacing]

Now I am sure some of you fellas have done this even if you don't want to admit it.

So PM me if you don't want to post it here.

Has anyone here built a car with the rears canted positively?

A gut feeling tells me that 5 Kids has done this but this is based on nothing but gut.

Thanks,

Yes, I ran one with reverse canted rears at the DD4H March Madness race 2-3 years ago... I happen to have it here at my desk at work.... It ran fine and was competitive, the only drawback is the clearance issue with the rears....

 

[Guest]

Fascinating!
I can see I have to do some sifting to find out what could possibly come between the love affair between steel and styrene.
Do you love those open ended questions of mine BR?
Pontoons are faster than a canoe! More stable too.
If the wheels are all positively canted it will present a much smaller cross section when viewed from the front.
See what I mean.
Just a rule of thumb on the width.
I am still trying to digest the last one.
Thanks

 

[Guest]

Now I am sure some of you fellas have done this even if you don't want to admit it.

So PM me if you don't want to post it here.

Has anyone here built a car with the rears canted positively?

A gut feeling tells me that 5 Kids has done this but this is based on nothing but gut.

Thanks,

Yes, I ran one with reverse canted rears at the DD4H March Madness race 2-3 years ago... I happen to have it here at my desk at work.... It ran fine and was competitive, the only drawback is the clearance issue with the rears....

LOL! I just knew you tried that one Scott!
Ok. What is that sticking out of the body?
A steel "axle holder" for the rears?
Thanks,

 

[Chief]

The car was named Running up side down...AND that is because my son and I got so involved with how the car looked that we (my son) put the stickers on the bottom and I had no idea until QT asked my why my car is up side down??? I thought he was joking...Nope no joke. Funny mistake so I made light of it and rebuilt the car and made it look like it was running upside down but it was actually running correctly the second time...
i really wanted to forget about that...oh well

 

[down4derby]

5 kids, when you ran that car were the tread bumps removed or was the angle as such they did not contact?