Search found 487 matches

by MaxV
Fri Jan 12, 2018 9:08 am
Forum: Car & Semi-Truck Construction
Topic: Rail Riding - relationship between COM and drift
Replies: 10
Views: 228

Re: Rail Riding - relationship between COM and drift

As you make the COG more aggressive, you need to increase the drift so that there is more pressure on the guide rail to help keep the car going straight. (since there is less pressure on the track itself)
by MaxV
Fri Dec 01, 2017 2:58 pm
Forum: Derby Products and Services
Topic: Maximum Velocity End of Year Sale
Replies: 0
Views: 314

Maximum Velocity End of Year Sale

Just to let the DerbyTalk folks know that Maximum Velocity is running a sale right now. First, we just introduced these new products: http://www.maximum-velocity.com/pics/domedadjustableroundsmall.jpg - Domed Adjustable Tungsten Round - Looking to make a car with minimal wood and the weight focused ...
by MaxV
Mon Nov 20, 2017 7:42 am
Forum: General Topics
Topic: Weighted Wheels
Replies: 9
Views: 443

Re: Weighted Wheels

Below is a link to a test I did on wheel weighting - the bottom line is you want light wheels (as was said above). Vitamin K is correct that pinewood derby "wheel weights" do not touch the wheels.
http://www.maximum-velocity.com/pinewoo ... _v7_i3.htm
by MaxV
Fri Nov 10, 2017 8:42 am
Forum: Electronics
Topic: infra red timers - why is the receiver on the bottom?
Replies: 4
Views: 527

Re: infra red timers - why is the receiver on the bottom?

The Judge timer from newdirections does have the light source in the track and the sensors on the bridge. In my experience it has the least issue with light reflectivity. Maybe better than flat black paint is to reduce the size of the aperture in the track. An 1/8 inch hole is big enough so sense th...
by MaxV
Tue Sep 19, 2017 10:48 am
Forum: Derby Products and Services
Topic: New Products and Special Offers from Maximum Velocity
Replies: 0
Views: 530

New Products and Special Offers from Maximum Velocity

It's September, and time to smell the pine again. That's right, it's pinewood derby time. We at Maximum Velocity are pleased to introduce our new pinewood derby products. You can see all of our new products by clicking on this link: New Products Here are a few highlights: http://www.maximum-velocity...
by MaxV
Thu Sep 14, 2017 8:35 am
Forum: Electronics
Topic: Electronic starters
Replies: 2
Views: 458

Re: Electronic starters

I use a starter from newdirections.ws (the Judge, John Shreffler). He has versions for most tracks, and they are well under $200.
by MaxV
Sat Aug 12, 2017 10:35 am
Forum: Car & Semi-Truck Construction
Topic: MaxV wheels and oil
Replies: 6
Views: 789

Re: MaxV wheels and oil

You can use either Krytox 100 or NyOil with the MV Wheels/axles, but it is really easy to overdo it with NyOil. But in any case, make sure that oil is not running down the side of the wheels, or you will really foul up the track. Just one drop is all that is needed.
by MaxV
Tue May 09, 2017 8:37 am
Forum: Derby Products and Services
Topic: Pinewood Derby Inventory Clearance Event - May 2017
Replies: 0
Views: 769

Pinewood Derby Inventory Clearance Event - May 2017

Now that the 2016-17 Pinewood Derby season is coming to a close, Maximum Velocity is offering you an opportunity to prepare for the next racing season with great deals on many products including tungsten, discount blocks and kits, and a 10 percent discount on all purchases. Specifically, we are offe...
by MaxV
Sat Mar 18, 2017 2:52 pm
Forum: Electronics
Topic: Lasers as better finish-line emitters?
Replies: 3
Views: 774

Re: Lasers as better finish-line emitters?

There are emitters and collectors that are tuned, so that ambient light has little to no effect. John Shreffler at http://www.newdirections.ws/judge.html uses these in his Judge timer. He also has a version that can be used in direct sunlight. Maybe John can chime in with some additional information.
by MaxV
Fri Feb 17, 2017 3:40 pm
Forum: General Topics
Topic: How to build a car to epically fail?
Replies: 12
Views: 1659

Re: How to build a car to epically fail?

I built a car once for our leader. I took a large washer that just fit inside the rear wheels. I cut the washer in half with a hacksaw, then glued a half washer into each of the rear wheels. Other than that the car was normal. When it went down the track, it would go "Whoop, whoop, whoop ..." as the...
by MaxV
Wed Feb 15, 2017 3:14 pm
Forum: Derby Products and Services
Topic: Micro Tungsten Cylinders from Maximum Velocity
Replies: 0
Views: 694

Micro Tungsten Cylinders from Maximum Velocity

We made a special purchase of Micro Tungsten Cylinders, and we are offering them at a very low price. At $2.95 per ounces, it is the least expensive tungsten on the market today. http://www.maximum-velocity.com/pics/15046.jpg You can find them here: http://www.maximum-velocity.com/pinewood_derby_wei...
by MaxV
Fri Dec 16, 2016 8:46 am
Forum: Electronics
Topic: Best timer for single lane test track
Replies: 6
Views: 5983

Re: Best timer for single lane test track

I once had a single lane Judge time from http://www.newdirections.ws. It worked quite well. Talk to John Shrefler at NewDirections.
by MaxV
Tue Aug 09, 2016 8:51 am
Forum: Planning, Preps & Running the Race
Topic: Footprint for a 32' Freedom Track?
Replies: 2
Views: 5394

Re: Footprint for a 32' Freedom Track?

Mine measures 33 feet. However, you do need 3 additional feet at the front to allow for staging (this area we restrict from foot traffic), and then a large buffer at the other end for foot traffic, and possible a video camera.
by MaxV
Tue May 10, 2016 11:02 am
Forum: Derby Products and Services
Topic: Maximum Velocity Inventory Clearance Event - May 2016
Replies: 0
Views: 11624

Maximum Velocity Inventory Clearance Event - May 2016

Just to let you know Maximum Velocity is having an Inventory Clearance Sale. Specifically, we are offering clearance pricing on: - Tungsten, including one ounce of tungsten for 1 cent (one per order, only 100 available), - Discount slotted blocks, - Formula One car kit, - Wheels Flares and Paint Ste...
by MaxV
Fri Apr 29, 2016 9:29 am
Forum: Construction Workshops
Topic: Maximum Velocity 5460 wheel and axle experts
Replies: 4
Views: 8076

Re: Maximum Velocity 5460 wheel and axle experts

The key is to insert the axle straight. From an installation viewpoint, whether the axle is blunt or pointed makes no difference. Blunt tips do not cause the wood to crack, in fact pointed axles are more prone to this as the axle is swollen right above the chisel point. I recommend: 1. Keep paint ou...