12/09/2013
The front guide on these models is a weak spot for many. From the guide popping out to very limited guide travel, this area could use some attention.
My approach is utilizing the B-Nova adaptors specifically made to address these issues.
PARTS LIST:
B-Nova Guide Adaptors There are different thicknesses of adaptors. The best advice I can give is to get this assortment pack to get started. This way you have one of each in case you want to repair a different model. If you only want the adaptors for this Mustang, use the 3/32nd kit only.
Slot.it Advanced Blade Guide I like this guide as it has an extended forward blade that helps the control of many models. You can use any other guide you prefer of course.
SCC Guide Spacers Very handy little items. I always use at least one in every modification I do. You want a little clearance between the guide mount plate and the top base of the guide for smoother operation.
SCC Guide Wire Another important item. Using flexible wire is always the way to go. Stiff wire restricts guide travel and can cause erratic cornering.
SCC Braid I prefer tinned copper but you can use your braid of choice.
M2 Set Screws This is a very practical way to attach your guide wires into the guide. It delivers a good connection and is easily installed and removed.
SPECIAL TOOLS: If you are just starting in our hobby you will need some special tools to work on your models. You do not NEED a Dremel in this case as you could file the material by hand.
Dremel with 1/8" High Speed Cutter This cutter is one of my favorites for chassis work. It trims away material quickly and cleanly and small enough to get into tight spaces.
Set Screw Wrench You will need this for the set screws.
Ok, time to get started.
Remove the guide and then remove the 2 screws holding the original contact straps. While you are here, use your soldering iron and remove the wires from the motor.
The adaptor will be placed underneath, inside the original guide mount.
The original hole needs a little sanding to ensure proper fit. You can use a rat tail file or even a Exacto blade. Just take your time and test fit as you go.
*SET-UP TIP* My car is being set up to have the front tires just touching the track. We race on wood with braid that is mounted flush to the track surface. The front wheels/tires have been trued to make sure they are as round as possible. This sanding can reduce diameter slightly.
Always test fit your guide mounts and shims to find your preferred height.
I use CA (Super Glue) to mount the adaptor. You can use Testors model glue or any adhesive you feel it needs. You could drill it out and use a very small countersunk screw but I have never seen any reason to go through all of that. With the 30+ models I have modified, not one has ever broken free using simple adhesive.
The shaded areas above should be trimmed away to increase the guide travel. You can trim a little farther as shown to allow more if you desire. This is where I like to use the Dremel and cutting bit described earlier.
Completed.
Mount one shim on the guide to start. You might need to add more to set the ride height specific to your track and personal taste.
Attach lead wires to guide using the set screws. Now route your wires to the motor and solder them in place. I like to route mine as shown.
With the modification finished, you can see your guide travel is increased. If you want more, just sand more. I find this is enough for my home racing.
You also have a very secure guide system that will function much better than the stock design.
Simply put this modification accomplishes a lot for very little investment.
- Harry
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