Search found 162 matches

by John Shreffler
Sun Sep 30, 2007 7:40 pm
Forum: Do-It-Yourself
Topic: Need to build a cheap finish line
Replies: 5
Views: 12053

Re: Need to build a cheap finish line

I am feeling generous because the season has not started. I have a bunch of old Judge parts that I can scavange and build whatever you need for $35 including shipping. Let me know the lane spacing.

www.newdirections.ws
by John Shreffler
Sat Sep 29, 2007 6:58 pm
Forum: New Directions
Topic: Remote Control Gate for SuperTrack
Replies: 4
Views: 10628

Re: Remote Control Gate for SuperTrack

My customer did want the light tree, so that is part of it. He wanted it bad enough to cut off a foot of his track so I could work out the details. It was my first experience with this particular track, and I am very impressed by the clever profile that allows the start gate to be fabricated from a ...
by John Shreffler
Sat Sep 29, 2007 6:07 pm
Forum: New Directions
Topic: Remote Control Gate for SuperTrack
Replies: 4
Views: 10628

Re: Remote Control Gate for SuperTrack

Well, I had a track owner ask me if I could fit my design to it, so I agreed to give it a try. By the way, wasn't it you that created GPRM, when there was already some derby software out there? :roll:
by John Shreffler
Sat Sep 29, 2007 5:56 pm
Forum: New Directions
Topic: Remote Control Gate for SuperTrack
Replies: 4
Views: 10628

Remote Control Gate for SuperTrack

Announcing a new format in our line-up of remote controlled solenoid start gages, this one fits the SuperTrack by SuperTimer.
http://www.newdirections.ws/Supertrack.html
by John Shreffler
Sat Sep 22, 2007 8:55 am
Forum: Space Derby
Topic: Prop wire?
Replies: 5
Views: 25791

Re: Prop wire?

I bought the Space Derby kit from BSA, and put it all together, getting everything "right" using every bit of advice I can find on the web. Still, I can't get it to fly more than 5 feet down the line. I was looking at the propeller, and it does not seem to have the curve that would really ...
by John Shreffler
Tue Aug 21, 2007 2:19 pm
Forum: Do-It-Yourself
Topic: IR leds vers Halogen light bulbs
Replies: 12
Views: 22051

Re: IR leds vers Halogen light bulbs

The currents do seem a bit high. My timers use 12 ma. for the illuminators, and pairs of lanes are wired in series, so the total illuminator draws 6 ma per lane. This gives 20 continuous hours of operation from AA cells on a 6 lane track. Total saturation of the photo sensors is achieved at a separa...
by John Shreffler
Mon Aug 20, 2007 3:10 pm
Forum: Other Vendors
Topic: BestTrack and The Judge join UPS Centennial Tour
Replies: 0
Views: 8028

BestTrack and The Judge join UPS Centennial Tour

Our favorite shipper has chosen us to be part of their Centennial Tour. See http://www.newdirections.ws/UPS.html
or google: UPS Centennial Tour
by John Shreffler
Tue Apr 24, 2007 7:05 pm
Forum: Commercial
Topic: Derby Magic Track
Replies: 57
Views: 98878

Re: Derby Magic Track

You are reading correctly. I use a rather small solenoid which overcomes the balance of forces between the cars trying to open the gate, and a tension spring keeping the gate upright. You must be willing to monitor and adjust for changing conditions. But this is very fast and simple. I could use a h...
by John Shreffler
Tue Apr 24, 2007 3:51 pm
Forum: Commercial
Topic: Derby Magic Track
Replies: 57
Views: 98878

Re: Derby Magic Track

I have the same problem. For the start gate, I tell them to put two holes
on the straddle guide center lines, and I supply #6 x 3/8 panhead screws.
by John Shreffler
Tue Apr 24, 2007 9:21 am
Forum: Solenoid Start Gates
Topic: Adding Reaction Time & Red Light to Start Gate
Replies: 40
Views: 69664

Re: Adding Reaction Time & Red Light to Start Gate

Using the Green light from the tree would work, and it actually sounds like the best way.
by John Shreffler
Tue Apr 24, 2007 9:18 am
Forum: Commercial
Topic: Derby Magic Track
Replies: 57
Views: 98878

Re: Derby Magic Track

I make start gates, finish lines, and light trees. I don't get involved in modifying the MagicTrack, although I am quite familiar with it, and have samples of it here that I worked out design details and photographed assembly steps. The thickness of the track material is only .056". If you coun...
by John Shreffler
Tue Apr 24, 2007 6:32 am
Forum: Commercial
Topic: Derby Magic Track
Replies: 57
Views: 98878

Re: Derby Magic Track

That would work. That is essentially how I mount my solenoid start gate to this particular track. See
http://www.newdirections.ws/images/MagicMount1.gif
http://www.newdirections.ws/images/MagicMount3.gif
by John Shreffler
Tue Apr 24, 2007 6:21 am
Forum: Solenoid Start Gates
Topic: Adding Reaction Time & Red Light to Start Gate
Replies: 40
Views: 69664

Re: Adding Reaction Time & Red Light to Start Gate

used with derby software ... for timing purposes? The Judge I shipped to this customer did not have computer capability, so I did not look at this aspect. There is only one timer, so the elapsed time of both cars could not be measured independently. By logically OR ing the separate magnetic switche...
by John Shreffler
Mon Apr 23, 2007 5:42 pm
Forum: Commercial
Topic: Derby Magic Track
Replies: 57
Views: 98878

Re: Derby Magic Track

PVC cement, AKA MIBK, used to join pipes together does not seem to be the right stuff here. It is very volatile, and loses most of its mass in curing. I would suggest plaster of paris, which would cure in a minute, and could be flicked aside when disassembling the track. You might also sidestep the ...
by John Shreffler
Tue Apr 10, 2007 3:29 pm
Forum: Commercial
Topic: Derby Magic Track
Replies: 57
Views: 98878

Re: Derby Magic Track

The DerbyMagic track is light weight, and in most cases not strong enough to mount timers directly to it. I have made a special version of my timer specifically for this track.
See http://www.newdirections.ws/DerbyMagic.html