Search found 183 matches

by TXDerbyDad
Mon Feb 02, 2015 7:06 pm
Forum: Car & Semi-Truck Construction
Topic: Which Mothers?
Replies: 26
Views: 2970

Re: Which Mothers?

I had read somewhere, I believe from one of the wheel/axle vendors that polishing beyond 8,000 grit was pointless in their testing. But they didn't post their testing protocol or their reasoning. Has anyone done any testing to determine what the sweet spot is for polishing and graphite lubrication? ...
by TXDerbyDad
Thu May 08, 2014 3:04 pm
Forum: CO2 Powered
Topic: Blast Car Ideas
Replies: 8
Views: 4417

Re: Blast Car Ideas

The Blast Car program was ended by BSA at the end of 2013. :shake:
by TXDerbyDad
Thu Apr 17, 2014 1:51 pm
Forum: Car & Semi-Truck Photos
Topic: Mid America Builds Almost Finished
Replies: 28
Views: 4383

Re: Mid America Builds Started

birddog wrote:We are cutting it a bit close this year with a bit of a late start, but got the cars laid out and axle holes drilled last night. Hope to make big progress this weekend.

birddog
We still haven't started.
by TXDerbyDad
Thu Apr 10, 2014 1:12 am
Forum: Car & Semi-Truck Photos
Topic: My boy's collection
Replies: 4
Views: 1248

Re: My boy's collection

That's a great collection of cars!
by TXDerbyDad
Thu Apr 10, 2014 1:06 am
Forum: General Coordinator Topics
Topic: Allow Lightened wheels?
Replies: 21
Views: 7038

Re: Allow Lightened wheels?

Seems that with a mandrel, a Dremel or drill, and a steady hand, anyone could achieve lighter wheels without high cost or technology? Am i over-simplifying this? I agree with the notion that anything requiring "high tech" or "high touch" changes the playing field. Keeping it fair is a good thing, b...
by TXDerbyDad
Sat Apr 05, 2014 12:31 pm
Forum: General Car/Truck Racer Topics
Topic: Hints for detecting lightened wheels?
Replies: 31
Views: 5214

Re: Hints for detecting lightened wheels?

Regarding outer hub step removal ... unless it is forbidden by your rules, I would not worry about detecting step removal. Its effect on angular inertia in negligible (as is most near-axis material removal). In fact, since the mass in the wheel does NOT participate in bore-axle friction, the increa...
by TXDerbyDad
Sat Apr 05, 2014 12:19 pm
Forum: General Car/Truck Racer Topics
Topic: Hints for detecting lightened wheels?
Replies: 31
Views: 5214

Re: Hints for detecting lightened wheels?

Anyone lightening a wheel in a non-professional capacity will be obvious. I had a scout groove his wheels-looked like hamburger meat. As Speederster said there are 1.8 gm wheels where the outside rim looks full thickness but by putting a finger inside the wheel you can feel that material has been r...
by TXDerbyDad
Fri Apr 04, 2014 7:48 pm
Forum: General Car/Truck Racer Topics
Topic: Fenders-Are they legal?
Replies: 26
Views: 6956

Re: Fenders-Are they legal?

resullivan wrote:I said it previously and I will say it again. By your interpretation of the 3/8" rule only hover cars would be allowed because by the letter of the rule wheels touch and far exceed the 3/8" rule.
:bigups:
by TXDerbyDad
Fri Apr 04, 2014 3:43 pm
Forum: General Topics
Topic: Mid America Pinewood Derby 2014
Replies: 40
Views: 6682

Re: Mid America Pinewood Derby 2014

NoSkills, You're a Genius! Well...ahhhhh....thanks. :oops: I think I figured this out before by accident. Noskills Yeah, I think I've discovered I want to change my name on the forum to avoid any confusion and not be mistaken for the person in question whom my handle seems to reference. :D
by TXDerbyDad
Thu Apr 03, 2014 11:26 am
Forum: General Topics
Topic: Mid America Pinewood Derby 2014
Replies: 40
Views: 6682

Re: Mid America Pinewood Derby 2014

Hi Greg. Any insight on when you hit 100 entrants? :D
by TXDerbyDad
Wed Apr 02, 2014 7:57 pm
Forum: Car & Semi-Truck Construction
Topic: tips for 56' Best Track race?
Replies: 13
Views: 1994

Re: tips for 56' Best Track race?

ah8tk wrote:It is Warren's track (Mr. Slick), he used to use a 64' BestTrack but replaced it with the new 56'. Looks like he hasn't visited DerbyTalk since 2012.
Woah! What configuration was that in?
by TXDerbyDad
Wed Apr 02, 2014 4:01 pm
Forum: Car & Semi-Truck Photos
Topic: Pinewood Derby School Bus
Replies: 2
Views: 2022

Re: Pinewood Derby School Bus

Awesome bus, and thank you for the video. It looks like it did well!
by TXDerbyDad
Wed Apr 02, 2014 3:57 pm
Forum: Car & Semi-Truck Construction
Topic: What does "burnishing" mean to you?
Replies: 11
Views: 2404

Re: What does "burnishing" mean to you?

I use the Tamiya cotton swab spears.
by TXDerbyDad
Wed Apr 02, 2014 3:51 pm
Forum: Car & Semi-Truck Construction
Topic: tips for 56' Best Track race?
Replies: 13
Views: 1994

Re: tips for 56' Best Track race?

The guy supplying the track said its 56' Best Track with double stop section. Maybe that includes the double stop section. Why would the longer track be better with a less aggressive COM? Does the Best Track have a level lower section or is it still a slight incline? The stop sections on a BestTrac...
by TXDerbyDad
Wed Apr 02, 2014 3:46 pm
Forum: Car & Semi-Truck Construction
Topic: tips for 56' Best Track race?
Replies: 13
Views: 1994

Re: tips for 56' Best Track race?

Generally, the longer the track, the more advantageous it becomes to shift your weight a little forward than on shorter tracks Why? I couldn't begin to tell you why. It's one of those random "facts" I read on the Internet over the years of researching PWD. I didn't bookmark it and can't tell if it ...