Search found 1676 matches

by Speedster
Fri Mar 01, 2019 8:32 pm
Forum: Car & Semi-Truck Photos
Topic: Semi truck with a Lowboy trailer build.
Replies: 24
Views: 1703

Re: Semi truck with a Lowboy trailer build.

A word of caution from someone (Me) who was taught a lesson by The Best track. Look at Whoda's truck. Make sure the wheels, both Front and Rear, are very close to the ends of the truck, If you have much sticking out, the truck will hit the track as it goes through the curve, both "A" Class and "B" c...
by Speedster
Thu Feb 28, 2019 4:12 pm
Forum: General Topics
Topic: Cars jumping 1 lane only
Replies: 9
Views: 481

Re: Cars jumping 1 lane only

Yep, he'd need to knock the pins out. It's interesting that something that can cause a car to jump the track and yet happen in only one lane. I wonder if a single Burr didn't get corrected.
by Speedster
Thu Feb 28, 2019 3:11 pm
Forum: General Topics
Topic: Cars jumping 1 lane only
Replies: 9
Views: 481

Re: Cars jumping 1 lane only

What's the COM on the cars that are jumping? Are the jumping cars all rail riding? Positive camber on the dfw?

Just for Fun, pull the section out and turn it around. Now what happens?
by Speedster
Thu Feb 28, 2019 8:43 am
Forum: General Topics
Topic: CRC dry graphite arasol lube
Replies: 1
Views: 195

Re: CRC dry graphite arasol lube

If I'm reading this correctly, all this does is enable someone to spray graphite on something (50' of chain) that would otherwise be impossible to do. Not any nice things said about the aerosol. I've always enjoyed Doc Jobe's way of applying graphite to the nail by slowly turning the nail in graphit...
by Speedster
Wed Feb 27, 2019 6:00 am
Forum: General Car/Truck Racer Topics
Topic: 2019 Mid America Derby - the Greatest Scout Race in the US
Replies: 3
Views: 268

Re: 2019 Mid America Derby - the Greatest Scout Race in the US

I'd like to see you make a "Graphite Only" for the Class "B" Big Rigs. Race them all together but if I sign up for "Graphite Only" that's who I'm racing against. The computer will give you the answer. I don't want a trophy but I'd like to see how I do against a Class "B" Graphite truck. Thank You.
by Speedster
Tue Feb 26, 2019 9:01 pm
Forum: Car & Semi-Truck Construction
Topic: Weight placement question
Replies: 16
Views: 632

Re: Weight placement question

I would run your system that gives you the 3/4" COM in front of the rear axle slot. See how it does. If you are using a stock wheelbase (4 3/8") then it has been recommended 1 1/2 ounce be put behind the rear axle slot. Over the years I have had better success with 2 ounces behind the rear axle slot...
by Speedster
Tue Feb 26, 2019 3:47 pm
Forum: Car & Semi-Truck Construction
Topic: Weight placement question
Replies: 16
Views: 632

Re: Weight placement question

I cut out the back and the front of the rear axle slot and go all the way through. I then glue a very thin piece of basswood over the openings on the bottom. I use a 2 oz block behind the rear axle slot, various tungsten cylinders, 1/2 oz plates, and then finish it off with tungsten putty. My cars a...
by Speedster
Tue Feb 26, 2019 1:02 pm
Forum: Car & Semi-Truck Construction
Topic: Weight placement question
Replies: 16
Views: 632

Re: Weight placement question

I wouldn't use Domes. They're too restrictive. However, if you have a COM of 3/4" in front of the rear axle slot I'd say you're in good shape as far as that goes. If you do everything else following science you should have a competitive car.
by Speedster
Mon Feb 25, 2019 9:29 pm
Forum: Car & Semi-Truck Construction
Topic: Cutting grooves in side of car where wheel edge might touch
Replies: 5
Views: 323

Re: Cutting grooves in side of car where wheel edge might touch

OK, I understand it now. Wheel gap is normally set with the thickness of a credit car, or around .030. They are closing that gap down to almost nothing so the car can't bounce back and forth as much as if there is a .030 gap on each side of the block. The notches give the inside wheel rims some plac...
by Speedster
Mon Feb 25, 2019 5:55 pm
Forum: Car & Semi-Truck Construction
Topic: Cutting grooves in side of car where wheel edge might touch
Replies: 5
Views: 323

Re: Cutting grooves in side of car where wheel edge might touch

Is there a story behind this particular block? Is this just a picture you have or do you actually have this block? Maybe something is being built for a Design competition.
by Speedster
Sun Feb 24, 2019 5:47 pm
Forum: Car & Semi-Truck Construction
Topic: Tip: Be careful with weird wheelbases!
Replies: 13
Views: 631

Re: Tip: Be careful with weird wheelbases!

Thank you. I never realized there were so many different kits.
by Speedster
Sun Feb 24, 2019 5:49 am
Forum: General Off Topic
Topic: News from "BrokeDownDan"
Replies: 0
Views: 194

News from "BrokeDownDan"

I contacted Dan and sadly he did not get his name from a broken Pinewood Derby wheel. He got his name from a co-worker. Dan has two bad knees and a back that goes out on occasion. The co-worker said to him "dang Dan you're always broke down aren't ya?". Dan, I wish you the very Best. If ever you hav...
by Speedster
Sun Feb 24, 2019 5:19 am
Forum: Car & Semi-Truck Construction
Topic: Tip: Be careful with weird wheelbases!
Replies: 13
Views: 631

Re: Tip: Be careful with weird wheelbases!

Would anyone be able to show me what the "ears" are?
by Speedster
Fri Feb 22, 2019 1:23 pm
Forum: Car & Semi-Truck Construction
Topic: Tip: Be careful with weird wheelbases!
Replies: 13
Views: 631

Re: Tip: Be careful with weird wheelbases!

Is this a 7" long block that some vendor sells with that wheelbase?
by Speedster
Thu Feb 21, 2019 6:06 am
Forum: General Topics
Topic: Pinewood Derby Rules
Replies: 4
Views: 392

Re: Pinewood Derby Rules

Good One, Darin. I Like It. This race is 37 miles East of where I live and it's all Ohio State Rt 2. Rt. 2 runs parallel, and very close to, Lake Erie. Sometimes Mother Nature decides to close sections of Rt 2. I can only hope she doesn't. Something interesting to me is, Marblehead is a rather Well ...