Search found 4651 matches

by gpraceman
Mon Aug 18, 2003 2:41 pm
Forum: Car & Semi-Truck Construction
Topic: Inertial and Vibration Losses?
Replies: 37
Views: 21947

Re: Inertial and Vibration Losses?

I also emailed "Grandpa" to thank him for the design, let him know how we did, and to tell him about this new forum. I told him that with his physics background he would be a perfect addition. He emailed me back and said he was still interested in PWD cars and had offered his help to this forum. I ...
by gpraceman
Mon Aug 18, 2003 1:25 pm
Forum: Car & Semi-Truck Construction
Topic: Best Weight Configuration
Replies: 3
Views: 3073

Re: Best Weight Configuration

What do people think about weights? What shape do people prefer, cylindrical, spherical . . .etc? Do you want the weight along the length of the car or along the line of the wheels? Is a light car body good and then all the weight is concentrated in one place? It all depends on your car design. Wit...
by gpraceman
Sat Aug 16, 2003 12:02 pm
Forum: Other Vendors
Topic: Lead Weights
Replies: 2
Views: 2948

Re: Lead Weights

MaxV wrote:If you don't find the Prather lead weight locally, we have the weight at Maximum Velocity.
Thanks Randy. Those be the ones.
by gpraceman
Fri Aug 15, 2003 11:17 pm
Forum: Other Vendors
Topic: Lead Weights
Replies: 2
Views: 2948

Lead Weights

Though not made specifically for derby racing, I have found lead strip stick-on weights at our local hobby store (Hobby People) that work great for derby cars. They are made by Prather Products, Inc. (disclaimer - I have no connection to them) and are usually used in remote control planes and boats....
by gpraceman
Fri Aug 15, 2003 10:59 pm
Forum: Other Vendors
Topic: PRECUT KITS BY FUNRISE.
Replies: 10
Views: 6280

Re: PRECUT KITS BY FUNRISE.

I picked up one of the FunRise kits (the dragster) to get a closer look at it. Here are my observations: The axles are pins, but it looks to me that they are molded, not machined. They have many scratches along the length of the axle. It would take a lot of work to remove these and get a good polish...
by gpraceman
Fri Aug 15, 2003 2:54 pm
Forum: Other Vendors
Topic: PRECUT KITS BY FUNRISE.
Replies: 10
Views: 6280

Re: PRECUT KITS BY FUNRISE.

Interesting. I was thinking these axels might be a better option than the BSA axels. If these are machined as opposed to a pinched/cut nail, I think you might get more consistent/better results. I think so, but check your rules. Often they say you must use the wheels and axles from your kit. When w...
by gpraceman
Fri Aug 15, 2003 12:09 pm
Forum: Other Vendors
Topic: PRECUT KITS BY FUNRISE.
Replies: 10
Views: 6280

Re: PRECUT KITS BY FUNRISE.

I was curious about the axels/nails. They almost look like they are casted? I didn't see any burrs or other marks on them and they had a dull gray color to them unlike BSA. Also they looked a little thicker. Just my observations looking through the box. I'll have to check them out myself. The axles...
by gpraceman
Fri Aug 15, 2003 12:27 am
Forum: General Coordinator Topics
Topic: Slowest Car Award
Replies: 28
Views: 18042

Slowest Car Award

Has anyone tried an award for the slowest car? If so, how was it taken by the recipients? We tried it one year, publicizing it ahead of time, and the winner was actually trying to win it. The challenge in the award was making the slowest the car that would still cross the line each time. I even used...
by gpraceman
Wed Aug 13, 2003 9:12 pm
Forum: General Coordinator Topics
Topic: Trophy Hunters
Replies: 7
Views: 5280

Re: Trophy Hunters

The next year I made unique ribbons for each boy -- which they attached to the Pinewood Derby car display stand/photo frame combo I designed and were brought to the Blue & Gold banquet as table decorations. It worked out very nicely, if I do say so myself... I heard of others making car stands (Sta...
by gpraceman
Wed Aug 13, 2003 8:43 pm
Forum: General Coordinator Topics
Topic: Trophy Hunters
Replies: 7
Views: 5280

Re: Trophy Hunters

We were kind of getting off the subject with the thread on the WIRL races -- so, I would like to open the subject of trophies/awards here. Sorry Dean, didn't mean to step on your toes, but I had jumped in there (probably while you were composing this) and moved those posts to a new thread at http:/...
by gpraceman
Wed Aug 13, 2003 8:27 pm
Forum: General Coordinator Topics
Topic: Cars winning two trophies
Replies: 13
Views: 8998

Re: Cars winning two trophies

There were plenty of trophies to go around, and no one cared whether anyone won two trophies. Unfortunately, not everyone has the budget for that, so they limit the number of trophies that a racer can win to try to spread things around more. However, paper is cheap, so why not give out a lot of cer...
by gpraceman
Wed Aug 13, 2003 2:01 pm
Forum: Car & Semi-Truck Construction
Topic: Inertial and Vibration Losses?
Replies: 37
Views: 21947

Re: Inertial and Vibration Losses?

The weight is providing the accelleration. This isn't like driving home with a trunkload of groceries, where the groceries shift forward when you brake and backward when you accellerate. Gravity is providing the accelleration, and it accellerates the entire car at the same rate. There is going to b...
by gpraceman
Wed Aug 13, 2003 1:53 pm
Forum: News and Announcements
Topic: PayPal Button
Replies: 2
Views: 7134

Re: PayPal Button

If you do not wish to use PayPal, you can contribute by Check, Money Order, Visa, or MasterCard. Just PM or email me for details.

Thanks,

Randy
by gpraceman
Wed Aug 13, 2003 9:39 am
Forum: News and Announcements
Topic: PayPal Button
Replies: 2
Views: 7134

PayPal Button

Some may be wondering what is up with the PayPal Donate button at the top of the site. Derby Talk is a non-profit site that does incur monthly web hosting fees and ongoing domain registration fees, so if you enjoy using this site, please consider helping in its support. By clicking on the button, yo...
by gpraceman
Wed Aug 13, 2003 9:20 am
Forum: Car & Semi-Truck Construction
Topic: Undercarriage Stopping Aids?
Replies: 2
Views: 2615

Undercarriage Stopping Aids?

I was curious if anyone does any type of treatment on the undercarriage of the car to help it stop. For last year's WalMart race we built cars that were between 12 and 13 ounces and I was affraid they would fly off of the end of the track so I stuck a non-skid strip to the undercarriage of each. The...