Search found 2643 matches

by FatSebastian
Mon Jan 11, 2016 6:26 pm
Forum: General Topics
Topic: PWD in the Funnies
Replies: 4
Views: 1430

Re: PWD in the Funnies

gpraceman wrote:Here's some funnies that I dug up relating to PWD.
The Buckets?
by FatSebastian
Fri Dec 11, 2015 10:03 am
Forum: Derby Products and Services
Topic: Ideas towards Cub-centric wheel improvement...
Replies: 36
Views: 5660

Re: Ideas towards Cub-centric wheel improvement...

I purchase wheels, but I've never "tested" the run-out on any purchased wheel Two is to see how well a given vendor's claims actually stack up against their product, and those of others vendors. :nod: Sporty once noted that he evaluated a couple of sets of vendor-modified wheels, with runout rangin...
by FatSebastian
Fri Dec 04, 2015 2:30 pm
Forum: General Car/Truck Racer Topics
Topic: Mold numbers and used/last year's wheels
Replies: 13
Views: 3329

Re: Mold numbers and used/last year's wheels

We did not stop selling it do to poor sales. The manufacturer stopped producing them is why we stopping selling them. Thanks for the added clarification. I was told that the manufacturer stopped production because of low retail demand. Regardless, the new commercial tool is definitely better. :thum...
by FatSebastian
Mon Nov 30, 2015 8:43 pm
Forum: Car & Semi-Truck Construction
Topic: BSA Block Weight
Replies: 3
Views: 982

Re: BSA Block Weight

rcmoeur wrote:(I did multiple searches ... and couldn't find anything.).
FWIW, here is a similar topic.
by FatSebastian
Mon Nov 30, 2015 7:14 pm
Forum: General Car/Truck Racer Topics
Topic: Mold numbers and used/last year's wheels
Replies: 13
Views: 3329

Re: Mold numbers and used/last year's wheels

I set about to build a gage to check runout. [...] They are available thru Derby Evolution and can be seen here That's cool. It's nice that there is a commercially-made option available again. Years ago, there used to be a commercial wheel concentricity gauge offered through some vendors, but it wa...
by FatSebastian
Thu Nov 12, 2015 12:10 pm
Forum: General Topics
Topic: Cycloid ramp for gravity race cars
Replies: 2
Views: 1023

Re: Cycloid ramp for gravity race cars

Interesting. So is the patent just for the curved section of the track? The entire running surface, from the starting gate until the straightaway, is specially curved, if that is the question: ...a ramp forced to have a cycloid curvature surface, said ramp comprising one or a plurality of side-by-s...
by FatSebastian
Wed Nov 11, 2015 6:19 pm
Forum: General Topics
Topic: Cycloid ramp for gravity race cars
Replies: 2
Views: 1023

Cycloid ramp for gravity race cars

I am not sure if this has been mentioned on DT before, but it seemed like an interesting development: Doc Jobe patented a track that, among other things, will minimize the centripetal (G-)force experienced by cars. http://patentimages.storage.googleapis.com/thumbnails/US20120034984A1/US20120034984A1...
by FatSebastian
Wed Feb 25, 2015 9:26 pm
Forum: Tracks
Topic: Setting up my Test Track
Replies: 14
Views: 1990

Re: Setting up my Test Track

Loder66 wrote:If it matters a have the Microwizard timer.[/url]
Do you have a laser gate? That can affect the timing noticeably.
by FatSebastian
Wed Feb 25, 2015 8:09 am
Forum: General Topics
Topic: Max V Shifted wheelbase test
Replies: 4
Views: 963

Re: Max V Shifted wheelbase test

… which can be found here.
by FatSebastian
Mon Feb 23, 2015 10:49 pm
Forum: Car & Semi-Truck Construction
Topic: Blocks out of alignment in the BSA boxes
Replies: 11
Views: 1530

Re: Blocks out of alignment in the BSA boxes

sporty wrote:Derbyworx has a tool. To saw a slot.
:!: Cool. Described here. I see that it fits two saw blades, so my recollection was correct!
by FatSebastian
Mon Feb 23, 2015 10:32 pm
Forum: Car & Semi-Truck Construction
Topic: What is this? Spacer next to DFW?
Replies: 16
Views: 2128

Re: What is this? Spacer next to DFW?

Are washers that much of a benefit? "Wheel bearings, washers, and bushings are prohibited." This is from the Rules-In-The-Box , and originates from Don Murphy's 1953 rules . I am not sure how the original rule against washers was intended to be applied. Early wheels were very different, and the con...
by FatSebastian
Mon Feb 23, 2015 9:39 pm
Forum: Car & Semi-Truck Construction
Topic: Blocks out of alignment in the BSA boxes
Replies: 11
Views: 1530

Re: Blocks out of alignment in the BSA boxes

Drill your holes on the opposite side and take a coping or hack saw and just saw up to your holes. That's a great idea, thanks! We've done this before, although it has been many years since we had to use slots. Two things I seem to recall: 1. If you are trying to replicate a stock look, a single ha...
by FatSebastian
Sun Feb 22, 2015 4:07 pm
Forum: Car & Semi-Truck Construction
Topic: Would you build a rail-rider for a questionable track?
Replies: 10
Views: 1751

Re: Would you build a rail-rider for a questionable track?

Rail runner. I would actually add a little more steer in this situation. Interesting. I would have thought the opposite - less aggressive steer-in (and CoM placement) for a questionable track. The track we usually run on (a decades-old wooden track) would be by most people's standards today a quest...
by FatSebastian
Sat Feb 21, 2015 11:41 am
Forum: Car & Semi-Truck Construction
Topic: No Weight Allowed???
Replies: 26
Views: 3178

Re: No Weight Allowed???

Vitamin K wrote:So, it occurred to me that the rules say nothing about wheel modifications.
K, can you post the rules?