115 replies to this topic

[dc-65x]

Hi Joe,

Yup, and it's the one I'll try first the next time out too . I want to be able to punch the bank with it . I really want to run colored tires, not black. Here's what’s available from Alpha:


(Photo courtesy of Alpha Slot Racing Products)

I don't believe orange donuts were around in early 1968 but yellows were and blues too. I'll ask my Bay Area expert friends what color were used then. Dave Lenz original car had blues but the yellows might look cool. I'm also going to contact Paul at Alpha to see if there is any difference in grip levels between colors............

[Bill from NH]

Rick, be sure to let us know what Paul Pfeiffer says. I know it's all SBR rubber but I thought some of the colors reacted to track conditions differently than others.

[Prof. Fate]

Hi

Where I was racing, I saw Tiny's greys, and a lot of orange. A couple of the tracks seemed faster with black. Outside of my area, I had a lot of conversations with racers in the midwest where the issue wasn't running orange, but that local rules required you blacken the sidewalls with a sharpie for appearaence.

Fate

[Horsepower]

Lots of orange in 1967. I remember because I used to say "Orange tires? Yuck!"

[dc-65x]

Latest update on this project.

Rick, be sure to let us know what Paul Pfeiffer says. I know it's all SBR rubber but I thought some of the colors reacted to track conditions differently than others.

Paul wasn't sure what, if any, differences color makes in his SBR rubber. I think there is a difference at least in the way my Dave Lenz recreation performed at Eddie's yesterday. Here's what I tried:



They looked like ugly modern wheels and tires.....well.....because they are . I wanted to make them look a little more like oldies:





The first thing was to sand the side of the wheel to reveal the rim. I also narrowed them like the Mura blues because my cars problem is too much traction:





First I tried the blues and they worked better on my car at Eddie's than Alpha blacks. Then I tried the yellows. These are the ticket :



The car still seemed a little light in the front so I added a small piece of Lucy Bob's 1/16" thick lead to the guide tongue:



The car is a jet for a 1968 recreation. The rebuilt LENZ motor is FAST but a little light on brakes. I didn't zap the original magnets so that might help a bit. It was turning mid 5's on Eddie's King which isn't a speed bowl like BP's. That's about as fast as our 1970's NCC GP20 cars with period air control.

When the car reaches it's limit it's still deslots front end first. That's bad as it happens without warning. I don't know how hard to push it like I would if it tailed out. Next time I'll mess around with lead and its placement and see if I can get the cajones to "punch the bank" .

Onward

[Horsepower]

Does it sound "cliche" to say "WOW,beautiful job!"

[Slotgeezer]

....The car is a jet for a 1968 recreation. The rebuilt LENZ motor is FAST but a little light on brakes.

My good friend Mike Boemker ( idare2bdul ) once told me...

"Ah, brakes are over-rated... That's why they invented glue! "




Jeff Easterly

[TSR]

I don't believe orange donuts were around in early 1968

Hi Rick,
Classic was first selling orange donuts and mounted tires in 1966.

[JohnnySlotcar]

In sbr, the blues have the most bite,yellow a little less and white for less grip then the yellows. I made the Booth tires in the 90's and found that each sheet of donuts would have a slightly different durometer reading. also the middle of the sheet would have less density than the edges!

[dc-65x]

In sbr, the blues have the most bite,yellow a little less............

Thanks John, that's what I thought from my testing. It's funny, my buddy Rodney has been a Bay Area racer since "the dawn of time" and he'll let me go ahead and do my testing. Then I'll say how much better the yellow's worked on my car and he'll say, "I know, the blues have more bite". Like you, he knows this stuff and I have to learn it.

[Phil Irvin]

Thanks John, that's what I thought from my testing. It's funny, my buddy Rodney has been a Bay Area racer since "the dawn of time" and he'll let me go ahead and do my testing. Then I'll say how much better the yellow's worked on my car and he'll say, "I know, the blues have more bite". Like you, he knows this stuff and I have to learn it.

Now RICK....... How many times have we all told newbe's..."TEST....TEST....AND TEST AGAIN".... Or just ask here!

Just couldn't pass it up.

OLPHRT
PHIL I.

[Edo]

Thanks for the track report, Rick!

Looove when you come back to us with feedback on your projects!

(It would be great also to see pics of the car(s) on the track and some of Eddie's ambiance's too).

When the car reaches it's limit it's still deslots front end first.

I've noticed that Choties tend to do that quite regularly, even with different chassis disegns. Could it be because the body is so narrow and long?

[dc-65x]

You got that right Phil

Thanks Edo. More pictures of Eddie's next time. A little weight on the front of the Choti really helped. The thing is so light anyway what the heck. I think the weight of the tall thick wings may cause tiltng in slow flat corners too. Eddie's King isn't a speed bowl where the big stiff wings might help more .

[Prof. Fate]

Hi

Edo, moslty it is that they look sleek but generate a little lift at speed!

I know, I know, i was evil in the day. One of the guys I built for showed up with chaoti bodies that launched a lot. I put little clear spoilers on it front and mid to kill the lift it was getting. Ruined the looks.

Fate

[TSR]

I've noticed that Choties tend to do that quite regularly, even with different chassis disegns. Could it be because the body is so narrow and long?

Your E-Ness, just like full-size racing cars, a slot car has to be balanced between front and rear down force. The Choti body has quite a bit of rear bias, and this needs to be counter-acted by two possible means, either less grippy rear tires or some added weight to the nose. I favor the weight so as to keep as much grip as I can. Of course a third solution consists in adding side dams to the sides of the nose of the body to push it down in that area. But it does not look as cool.

[Stefano Sbravati]

Hello everybody.
I found this leaflet on eBay: enjoy.



Stefano from Italy

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