Search found 2076 matches

by whodathunkit
Mon Mar 12, 2018 11:29 am
Forum: General Car/Truck Racer Topics
Topic: Starting position for rail riding.
Replies: 7
Views: 1048

Re: Starting position for rail riding.

That is a good question! If you car has a raised wheel you wouldn't want to stage it up against the rail. As it has to spin up scrubbing off speed. I think by having your car staged with the DFW off the rail that there is less.. Rolling resistance to get it moving. Sent from my iPhone using Tapatalk
by whodathunkit
Sun Mar 11, 2018 9:43 am
Forum: Car & Semi-Truck Construction
Topic: One half inch Center of Gravity
Replies: 3
Views: 844

Re: One half inch Center of Gravity

Something tells me If you've have a good smooth track.
With some true round wheels & excellent axle alignment that you could get away with a more aggressive weighting.
by whodathunkit
Sat Mar 10, 2018 10:17 pm
Forum: Car & Semi-Truck Construction
Topic: Graphite on wheel tread
Replies: 4
Views: 941

Graphite on wheel tread

It might offer a slight improvement
In heat times! Say 4 thousandths of second on smooth aluminum tracks.
Might even offer more of a benefit on rougher tracks!






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by whodathunkit
Mon Mar 05, 2018 8:20 pm
Forum: Car & Semi-Truck Construction
Topic: Amount of drift vs. dfw weight.
Replies: 12
Views: 1885

Re: Amount of drift vs. dfw weight.

AaronS, Once you post your photos there open for viewing on your topic.. and they can also be viewed on the web as well. I can blame you for asking the question however! It's you'r daughter's work and if she want's to keep her work from being view on the topic or on the web then that's up to her! Bu...
by whodathunkit
Mon Mar 05, 2018 7:14 pm
Forum: General Topics
Topic: History of the Pinewood derby
Replies: 5
Views: 1620

Re: History of the Pinewood derby

Thank's speedster! I wounder if the kits The Pathfinders use are the S&W pinewood derby kits.. Say S&W Crafts Mfg also got started making there kits in 1957 as well. http://www.pinewoodderbycars.com/aboutus.asp the link above said they have always used the same wheels and wooden dowels and screw typ...
by whodathunkit
Mon Mar 05, 2018 12:15 pm
Forum: Car & Semi-Truck Construction
Topic: Burnishing wheel bores with graphite
Replies: 6
Views: 3065

Re: Burnishing wheel bores with graphite

I never gave much thought to using
A rubber pad to roll the wheel back and forth on.. good tip there VK!


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by whodathunkit
Mon Mar 05, 2018 7:41 am
Forum: Car & Semi-Truck Construction
Topic: Amount of drift vs. dfw weight.
Replies: 12
Views: 1885

Amount of drift vs. dfw weight.

An Anhk is a cross but with a looped top.
an Ankha is a cartoon looking cat.

I'm with Speedster on the pic's!



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by whodathunkit
Sun Mar 04, 2018 10:24 pm
Forum: Car & Semi-Truck Construction
Topic: Polishing axles with cape cod
Replies: 10
Views: 2047

Re: Polishing axles with cape cod

With the cape cod polish... I'd say if your axles were made out of pure silver .. that you would want to use a mild detergent to wash them! Graphite lube's are little more forgiving on polished axles.. then the oil type lubes are for sure. As far as trying to embed graphite into a polished metal axl...
by whodathunkit
Sun Mar 04, 2018 8:05 pm
Forum: Car & Semi-Truck Construction
Topic: Burnishing wheel bores with graphite
Replies: 6
Views: 3065

Burnishing wheel bores with graphite

I just dip the spear into some graphite that's been pored out in a small jar. From there I work it into the wheel bore for about 15 sec. on a slow to midium speed on the drill. Then i'll re-dip the spear and reverse the direction of the drill and work more graphite in for the same amount of time. I'...
by whodathunkit
Sat Mar 03, 2018 8:17 pm
Forum: General Topics
Topic: History of the Pinewood derby
Replies: 5
Views: 1620

Re: History of the Pinewood derby

I'm not giving up on it! ... Speedster what can you tell me about the Pathfinders Clubs. that also race pinewood derby cars. From the Boise Cascade logo that's on the bottom side of the kit box.. I can trace that name to the Boise Cascade wood products founded in 1957. And then to there 1960 paper m...
by whodathunkit
Sat Mar 03, 2018 7:45 pm
Forum: General Topics
Topic: History of the Pinewood derby
Replies: 5
Views: 1620

History of the Pinewood derby

well Speedster, I'll come right out with saying.. The History of the pinewood derby racing has many roots with a lot of different clubs. And since the Oct 1954 Boy's Life article where Don Murphy's car drawing for making the cars or it's kits from that concept drawing. http://i65.tinypic.com/14d33hl...
by whodathunkit
Sat Mar 03, 2018 6:16 pm
Forum: Car & Semi-Truck Construction
Topic: Amount of drift vs. dfw weight.
Replies: 12
Views: 1885

Re: Amount of drift vs. dfw weight.

Okay If we take the drift numbers speedster said 2'' in 3' And now we move to 4 ' length of travel you should have around 3 1/2" to 3 5/8" of drift. If you stay on those numbers in 8 foot of travel you should be at 5" of drift . Best of luck to you and your daughter .. Sounds like she is quite the w...
by whodathunkit
Sat Mar 03, 2018 5:38 pm
Forum: General Topics
Topic: Trapping graphite on axle grooves
Replies: 3
Views: 957

Re: Trapping graphite on axle grooves

In what way would you wrap the tape in the grooved axles.. in relation to the direction of wheel bore travel.
so that the tape will not unwind inside the wheel bore as it travels around the axle..Think of it as thread tape to pipe fittings.

Love the Idea!
by whodathunkit
Fri Mar 02, 2018 8:32 pm
Forum: Car & Semi-Truck Construction
Topic: Burnishing wheel bores with graphite
Replies: 6
Views: 3065

Re: Burnishing wheel bores with graphite

Hi Drknjme! Some topics about Burnishing : http://www.derbytalk.com/viewtopic.php?t=5223 wheel bore prep: http://www.derbytalk.com/viewtopic.php?f=11&t=4995 Stan Pope also has a web page with a few techniques as well. http://www.stanpope.net/pwfrictn.htm Here lately after getting fed up with destroy...
by whodathunkit
Fri Mar 02, 2018 8:24 pm
Forum: Car & Semi-Truck Construction
Topic: Amount of drift vs. dfw weight.
Replies: 12
Views: 1885

Re: Amount of drift vs. dfw weight.

Hi AaronS and :welcome: with a total weight of 143.1 grams or 5.046 oz. Is that right? 143.1 grams at 5.046 ( I could be wrong..) to me it seems like that number should be around 5.04770395) however 5.046 is close. Do you know the track type the car will be raced on .. how long of track or if it's w...