Search found 60 matches

by GimpyPaw
Sun Mar 16, 2008 12:39 pm
Forum: General Car/Truck Racer Topics
Topic: Teeeman & The Wheel Weight Wonder
Replies: 48
Views: 34154

Re: Teeeman & The Wheel Weight Wonder

Just have 2 things to say about this... 1) That is the coolest way to check a wheel I've ever seen, and I suspect the 2009 season will see a lot of those in use (both at the Scout level and the proxy racers). 2) I'm sure that with a little tweaking a good cheat could get a 2.2g wheel with an interna...
by GimpyPaw
Sat Jun 30, 2007 12:23 am
Forum: Car & Semi-Truck Construction
Topic: My home-made pinewood tools
Replies: 0
Views: 7797

My home-made pinewood tools

I don't have access to a lathe, and my wallet tells me I spend too much on toys to justify buying wheels or profesionally crafted tools. I just wanted to share a few tools I've made (at a very modest cost) to work on my cars. My ultra cheap car ballance point finder thingie. One pinewood block, a sh...
by GimpyPaw
Thu Jun 28, 2007 11:02 am
Forum: Car & Semi-Truck Construction
Topic: The Limit of Pine as a material
Replies: 5
Views: 7340

Re: The Limit of Pine as a material

The car in my sig is made of laminated pine. The thickest strip is about 1/8th, the top and bottom were about 3/64th, before sanding. It's a pain cutting down the pine blocks, but the results were what I was after.
by GimpyPaw
Sun Jun 24, 2007 6:19 pm
Forum: General Car/Truck Racer Topics
Topic: Test track set up w / timers etc
Replies: 6
Views: 6892

Re: Test track set up w / timers etc

The fast times could have something to do with the fact that your start gate is about 18 inches higher than "normal" (If I recall a BestTrack start gate stands @ 4ft)
by GimpyPaw
Sun Jun 17, 2007 10:37 am
Forum: General Car/Truck Racer Topics
Topic: Speed of Pinewood derby car
Replies: 15
Views: 16462

Re: Speed of Pinewood derby car

GimpyPaw wrote:I've often wondered what the theoretical fastest time for a pinewood car is. I mean, given a car making it's run in a vacume, and given a friction value of -0- for all points of contact, how long would it take to travel the 36' (pin to finsih line of a 42' track)?
by GimpyPaw
Wed Jun 13, 2007 10:31 pm
Forum: General Car/Truck Racer Topics
Topic: Speed of Pinewood derby car
Replies: 15
Views: 16462

Re: Speed of Pinewood derby car

I've often wondered what the theoretical fastest time for a pinewood car is. I mean, given a car making it's run in a vacume, and given a friction value of -0- for all points of contact, how long would it take to travel the 36' (pin to finish line of a 42' track)? An object dropped from a hight of ...
by GimpyPaw
Wed Jun 13, 2007 9:17 am
Forum: General Car/Truck Racer Topics
Topic: Speed of Pinewood derby car
Replies: 15
Views: 16462

Re: Speed of Pinewood derby car

I've often wondered what the theoretical fastest time for a pinewood car is. I mean, given a car making it's run in a vacume, and given a friction value of -0- for all points of contact, how long would it take to travel the 36' (pin to finsih line of a 42' track)? An object dropped from a hight of 4...
by GimpyPaw
Tue May 29, 2007 3:11 pm
Forum: Car & Semi-Truck Construction
Topic: Krytox Relube
Replies: 3
Views: 4829

Re: Krytox Relube

I'm wondering how "dry" the compressed air your using is. If you don't have something to remove the moisture, most air compressors are going to push out some fairly humid air.
by GimpyPaw
Mon May 14, 2007 9:43 am
Forum: Car & Semi-Truck Construction
Topic: Rail riding, narrowed front, and lighter wheels test
Replies: 9
Views: 10736

Re: Rail riding, narrowed front, and lighter wheels test

I'm also going to call inside edge friction from the rail ride. Your biggest time improvement before you went with light wheels came from graphite on the inside edge to decrease the friction. You made no mention of graphite on the lightened wheels. True, round, polish, and graphite the inside edge a...
by GimpyPaw
Sat May 05, 2007 1:25 pm
Forum: Car & Semi-Truck Construction
Topic: Shimming the axles, how many wax = regular paper?
Replies: 5
Views: 7332

Re: Shimming the axles, how many wax = regular paper?

I did find a decent alternative, btw. You know those self-adhesive envelopes? That strip of wax paper you pull off to expose the adhesive strip is roughly equal to just over 2 strips of kitchen type wax paper. It also doesn't have the potential loose fibers that could come from regular copy paper. J...
by GimpyPaw
Fri May 04, 2007 10:18 pm
Forum: Car & Semi-Truck Construction
Topic: Shimming the axles, how many wax = regular paper?
Replies: 5
Views: 7332

Re: Shimming the axles, how many wax = regular paper?

That's not a bad idea. As long as your not in need of an "odd" number of shims, that works well. Might work even better to have one "fold" shim, and one "odd" shim, leaving you only 2 shims to fight with.
by GimpyPaw
Fri May 04, 2007 7:02 pm
Forum: Car & Semi-Truck Construction
Topic: Shimming the axles, how many wax = regular paper?
Replies: 5
Views: 7332

Shimming the axles, how many wax = regular paper?

Stacking wax paper strips get's difficult after 3. Usually at that point I move to a single shim cut from copy paper. Anybody know just how many wax paper shims it takes to equal a single slice of generic 20# copy paper?
by GimpyPaw
Mon Apr 30, 2007 9:55 pm
Forum: General Car/Truck Racer Topics
Topic: Name the car
Replies: 11
Views: 12363

Re: Name the car

Beautiful car. Love the paint job. [moderator cut - league discussions should be done in the league forums] In the picture the wheels look to be stock. :? Is there a rule against mentioning or talking about any of the racing leagues? Not making trouble, just trying to stay out of it. :wink: Thanks ...
by GimpyPaw
Sat Apr 28, 2007 11:00 pm
Forum: General Car/Truck Racer Topics
Topic: Testing for the presence of oil
Replies: 43
Views: 36536

Re: Testing for the presence of oil

I only have one problem with the "graphite upon inspection" concept. Everybody has their own ideas about the best way to apply and break-in graphite. To subject each car to the same brand, same application, and with the same break-in runs, all serves to take away some of the creative think...
by GimpyPaw
Sat Apr 28, 2007 7:08 pm
Forum: General Car/Truck Racer Topics
Topic: Name the car
Replies: 11
Views: 12363

Re: Name the car

Hey, my wife came up with an idea for the car's name:

My Divorce! :shock:

:mrgreen: :mrgreen:

edit:

She thinks "Terms for Divorce" sounds better. Is this a good thing?