Prepping a Best Track - plan on some time

Thinkin'Bout Racin

National Contender
Feb 20, 2017
574
325
63
I just thought I would share my recent experience in setting up a new Best Track. I want to share the issues I ran into and what worked for me.

While the Best Track is a good quality product, I wanted to make it better and ensure that any of my wheels would not get damaged.

I watched Bulldogs video several times and used that as my guide to get started. I think he said it took him about 3-4 hours to sand the entire track, so I planned on about double that. It ended up taking me about 22-23 hours to sand the entire track. This include removing all of the high spots at the joints and "fitting" each joint so it was tight at the surface.

I ran into a QC issue with one of the curved sections (see attached). I contacted Best Track and sent them a picture. They shipped out a replacement right away and it did not end up slowing me down, because I had plenty of other stuff to do. When I spoke to Steve at Best Track, I also ordered extra lane pieces. I felt that the track could stand to be a little stiffer while I was sanding. So I added an extra lane piece in the middle of each section. I feel it really makes the track solid. I still need to order another one as I am going to place it at the top of the start gate to keep everything there even and solid also.

I had some difficulty in getting the joints to fit tight. I used the supplied bit to touch up each dowel location before installing them. I also used the supplied file to dress any burs. I still could not get the sections to draw up tight at the surface. I ended up tapering the end of each section about .015" from the top to the bottom. This allows the top to make contact first and really closed up the gaps. This took a little while to figure out and some time to decide how much material needed to be removed.

I used a block for all of my dry and wet sanding as this allowed me to keep things square and even. I cut some blocks so they fit the lanes and the paper so to maintain a good fit and not unduly waste sandpaper.

I used a lot of sand paper , both wet and dry. I started at 100 grit and went all the way to 7000, before I polished with Maguires polish. I used 100, 150, 180, 240, 320, 400, 600, & 800 to blend each joint and the transition. The 800 & 1000 covered the entire length of each section. While the track was smooth at this point, I did not like the finish. I wanted to match as closely as possible to the factory Best Track finish.

So, I started wet sanding. I used 1200, 1500, 1800, 2000, 2500, 3000, 5000, & 7000. At each grit, I rinsed the track thoroughly so any remaining course grit would be gone. I also completely washed the track both before and after the 7000 grit. I also used compressed air to dry the track and blow out any abrasive materials that might be trapped between the lanes. I did that several times before I moved to polish. Then I hand applied the polish and went over each lane and guide 4 times. After I was done polishing, I washed everything again and cleaned it a final time with brake cleaner. It took about 4 passes before the paper towel did not have any remaining black residue when wiping the track.

I then used pledge to wipe down the track surface as directed by Best Track. Overall, this was a much bigger project than I anticipated, but I am very pleased with the results. When looking with my jewelers loop at the untouched section of the track and what I sanded, they look alsmost identical under magnification. The sanded/polished section may be a bit less course, but is is close. I wanted to have it close, so that the amount of " bite" that the wheels would have on this track would be close to any other Best Track. I was also VERY concerned about residue abrasive being left in the track, so I probably went above what I need to when washing and cleaning the track.

I still need to apply the lane tape and do the start gate mods. I will say that the sound that the cars make while traveling down the track is sweet!

If I was to do this again, I would start the wet sand a little lower, maybe about 600? I hesitated to use wet paper in the beginning, because I was unsure of the cleanup. I left the track assembled and leveled while sanding thru the 2000 grit. I was confident that the transitions at each joint were fine and that I really was not removing much material at that point. After that I placed each section on sawhorses for the last wet sanding and polishing

I also went to Staples and bought extra binder clips. I am using 4 at each joint instead of 2. I really feel that this helps to close the gaps and keep them tight.

Good luck if you take on this project and I hope that you can learn from my experience.
 

Attachments

  • IMG_2821.JPG
    IMG_2821.JPG
    1.4 MB · Views: 1,113
  • IMG_2863.JPG
    IMG_2863.JPG
    1.2 MB · Views: 948
  • IMG_2868.JPG
    IMG_2868.JPG
    1.3 MB · Views: 983
  • IMG_2869.JPG
    IMG_2869.JPG
    1.3 MB · Views: 984
  • IMG_2873.JPG
    IMG_2873.JPG
    930.6 KB · Views: 995
  • IMG_2875.JPG
    IMG_2875.JPG
    1.2 MB · Views: 976
Last edited:
I also wanted to mention that I checked the times after I sanded to 1000 grit. I ran about 20 runs before and after the 1000 grit. I prepped both cars that same each time and tried to stage them as close as I could each time. The cars both picked up about .01 on the prepped track.

I also checked after I was done with the polish. I did not see any additional speed gains. However, I discovered that the last section (7') originally dropped about 3/8". I properly leveled that section before running the cars when I finished polishing. So, there may have been a very small gain that was negated by the track leveling????

Again, the purpose of the sanding is not to gain speed, rather it is to protect the wheels and maintain consistency for testing.

Let the fun begin!!!!
 
Last edited:
EXCELLENT post!! Thanks for the detail.

I just started setting up my four-lane BestTrack today, and it's been a beast trying to get each lane to mate up cleanly to each lane in the adjoining section.

I do plan on sanding and polishing once straight and level but not super excited about the time it'll take to do all four lanes. :(

Curious - how long was your sanding block? I've seen some people recommend 18" but that seems long (I don't even have a sheet of sandpaper that will cover that).
 
Q.T took the NPWDRL track to a local machine shop to have the ends machined perfect so they could mate exact. You may look into that option, I believe the fee was very reasonable. My sanding block was very short, but longer would be better, I just had 6" sanding discs so I made that work and it worked very well.
 
  • Like
Reactions: Skywalker Racing
Q.T took the NPWDRL track to a local machine shop to have the ends machined perfect so they could mate exact. You may look into that option, I believe the fee was very reasonable. My sanding block was very short, but longer would be better, I just had 6" sanding discs so I made that work and it worked very well.

Thanks man; that does sound like a worthwhile investment! Not familiar with machine shops in my area, and I'd be nervous trying to pick a reputable one but sure does sound like a timesaver. May give Joel a shout to discuss.
 
  • Like
Reactions: BulldogRacing
EXCELLENT post!! Thanks for the detail.

I just started setting up my four-lane BestTrack today, and it's been a beast trying to get each lane to mate up cleanly to each lane in the adjoining section.

I do plan on sanding and polishing once straight and level but not super excited about the time it'll take to do all four lanes. :(

Curious - how long was your sanding block? I've seen some people recommend 18" but that seems long (I don't even have a sheet of sandpaper that will cover that).

Like Bulldog, my sanding block was shorter. In theory, the longer the better. However, you are not trying to achieve an absolutely flat surface on a body panel that will be sprayed with black paint. Rather, you are trying to create smooth transitions from one section of track to another. While they are similar, they are not the same.

I think the most difference I saw was about 0.015" change from one section to another. Remember that you are "blending" that difference in height over about 3'-4'. So a 0.015" height difference blended over 3 feet means about a 0.0004" change per inch of travel. Try this; take a 3' level and place a 0.015" feeler gauge under one end and see how much difference it makes ...I hate to admit it but I have , it must be my OCD. :p

So while sanding, the first grit is the hardest and takes the most time. I used that grit to blend the transition and taper it for a distance of about 8" - 12". Near the end of that travel, I used less force and applied less pressure. Once that grit was vacuumed up, you could clearly see that the grit did not cut as deep near the ends of my sanding. I then used each successive grit to expand the distance and the length of the transition. So basically I ended up eventually "blending" the entire length of the track. Just remember to sand enough to remove the previous grits's sand marks and expand the distance a little on each end.

I did find that it was really important to vacuum up the dust and grit between each successive grit. I had a couple of times where the grit "balled" up under the sandpaper and galled the aluminum. I am unsure why that happens, but I found that keeping the paper clean along with removing the extra dust/grit seemed to eliminate that issue.

One more thing, you will need a shorter block at the curved section. There is no way to sand that with a long block. I guess ideally one could make a block that matched the radius of the curve, but even then, the sandpaper would not lay flat on the curved block.
 
Last edited:
  • Like
Reactions: Skywalker Racing
If I had to do the sanding over again I would do it out in the garage. We now have a few new stains on the carpet upstairs. Lucky for me my wife hardly goes upstairs. Scott do you have to set up and take the down your track every time that you use it?
 
  • Like
Reactions: Skywalker Racing
Having the ends of the track milled is awesome!!! I talked to 5 different machinist before I found one that would do it, or had a mill table big enough to do it.
So a little trick I learned about half way through my sanding. Once the track is assembled and your ready to start sanding, at each joint you want it to be smooth. You never want the downhill joint to sit higher than the uphill joint. You can have a slight low on the down hill side but never want a up. So once the track is together find all your ups on the downhill side of the joint and mark them with a Sharpe. Then take a BSA Block of wood and a hammer and place the wood on the UP on the downhill side of the track, tap the Up till it is level or slightly lower than the up hill side. If you do this it will save HOURS of sanding, and you'll have a hard time hearing the car transition from one track to the other. Hope this make sense, and can save some you you guys some time.
 
I did something similar, feathering the downhill track mating point, so as the car transition past a joint, its impossible to hit a ridge; however, my track must be assembled a certain way. You can not just arbitrarily connect the 7' sections of track together.
 
I did something similar, feathering the downhill track mating point, so as the car transition past a joint, its impossible to hit a ridge; however, my track must be assembled a certain way. You can not just arbitrarily connect the 7' sections of track together.

My track is the same way. Each track end is paired with another. They must be assembled in that order to remain flat.

I had no uphill joints when traveling downstream on the track. I mixed and matched my sections before assigning them a home in order to achieve all downhill joints for each section. When the cars run, you cannot hear any seems/joints. It is music to the ears! :D
 
  • Like
Reactions: Charles Studer
I hope that door can be opened without calamity. :)

It can, but to allow for it, I lost the space for my second stop section. I suggested moving the dining room table, but for some reason that was the last straw. :)

That door leads to the garage, so it's not rare at all that I come in the door, forgetting about the track, and find myself face to face with it. I'm sure I'll take some aluminum to the face eventually. Lol
 
Hope this make sense, and can save some you you guys some time.

It does, and I'd planned on doing exactly this. Thanks! I'm hoping that leveling will help and not too much beating into submission will be necessary.

I haven't had time to look for a machinist or to do anything more on the track since my last post.

Lucky for you guys racing at Nationals that you get at least one more Skywalker fleet straight off the tuning mirror. ;)
 
Well, getting it roughly setup was my first task. Still have to straighten, level, and close up some gaps. Then the real fun can begin...

Wife is gonna kill me. Lol

6FB78662-4938-477D-A1BF-51A5BDA07AB4_zpsgb4yajtf.jpg
Is this where you are going to do your testing? My wife would kill me!! LOL. I get in trouble for having my track set up in my freezing garage.
 
Last edited:
Is this where you are going to do your resting? My wife would kill me!! LOL. I get in trouble for having my track set up in my freezing garage.

No one rests with a pinewood derby track within reach. Haha.

But yes, my testing will be right down the main thoroughfare of my house, and yes, I am in trouble.

My wife intends to host a baby shower here next week. I'm thinking of streaming the week's "discussions" live on Livestream for your entertainment pleasure. :D