VMX-450-BP-240 - Motortronics Drives and Soft Starts In Stock! 5-Star Rated. Fast Shipping. Great Customer Service.
Take a break from the truggies, buggies, and monster trucks. Step into the world of the VMX 1/4th scale dirt bike. With true to scale details, the realistic Motocross performance will leave you thinking that youre a Supercross hero as you clear the triple and blast the whoop section on your own backyard track. The VMX chassis was an exercise in compact functional space management while keeping a true to life look of a full scale 450 moto-cross bike. Covering up all that work would be a shame if it wasnt for a very detailed and realistic looking body set styled after contemporary 450 race bikes.The VMX 450 has a unique trap door style locking battery compartment that will accommodate 2S Lithium Polymer battery packs.
To top it all off, a highly detailed Neocell foam rider figure completes the package. Venom has spared nothing to create this scale yet functional specimen of engineering.The latest VR3T 2.4Ghz 3 ch fully programmable radio system controls the VMX 450 while a powerful V Series 540 class brushless system puts the power to the ground via the miniature steel roller chain.
1) Adjust the slipper clutch. Loosen the slipper 10mm lock nut to allow the spur gear to slip when turned by hand. Tighten the lock nut half a turn at a time until you can feel it takes a bit of effort to spin the spur gear by hand. To hold the layshaft in place you can grip the swing arm in your left hand and keep the chain from moving. Once you have set the tension try the VMX on a high traction surface.
You should hear the slipper slip for a moment when you hit the TH hard and the front should not just pop up and flip over. You can adjust it to your liking from here. 2) Steering Damper The damper is set to be loose from the factory so the VMX does not need as much steering input from you. As you get the hang of the bike we suggest you change the damper oil to a thicker oil.
The stock oil is about 35wt. Try 50wt and then higher as you feel more comfortable with the VMX. The thicker the oil the more direct the steering will become. 3) Gyro Flywheel Clutch Setting The clutch has an adjustment range of about 0.5mm from 2.5mm to 3.0mm. 2.5mm - recommended for higher speed driving and hard braking 2.7mm - factory setting 3.0mm - for the slowest driving conditions The gap or distance between the two cast aluminum clutch pads can be set according to your needs. Make sure to use thread lock on the threaded holes only. Apply the thread lock to the holes not the screw to prevent any thread lock to bond the or interfere with the pad and screw.
4) Suspension The VMX is set up with a very plush ride out of the box. Do not change this until you understand how the VMX works. The front and rear have to work together to cover bumps and jumps and are tuned to each other and bike to give the best basic all terrain capability.
If the front is too hard or the rear is too hard the VMX will not handle off road as well as it can when they are tuned correctly. For fast off road use the front fork needs to react quickly to the bumps and maintain control and stability.
The rear shock has to soak up the bumps and not pogo the rear of the bike around. To check if you have set the suspension correctly when tuning it you can use a mowed lawn or similar terrain with bumps evenly spaced. The point is to drive accross the bumps like a washboard and watch the VMX's behavior. If the front and rear are working together the chassis will not get upset and you will be able to drive through the section without a problem. If the front or rear cannot keep up with the frequency of the bumps it will be obvious what you have to adjust. 5) Riders Foot Clearance The VMX rider can hang on to the bike pretty well and if you want a little more ground clearance you can allow his feet to be loose off of the foot pegs. In tall grass or off road he will have much less effect on cornering.
The riders feet will see some wear but not as much if they are left loose. The rider can be repaired with THIN CA Glue. Some people might have this issue come up, your driving along just fine one moment and the next the chain is hanging down or falling off. What happened? Here is a good basic tip to help you keep the VMX running. Master Link The master link on the VMX chain is just like many full scale motorcycles and you have to pay attention to which way its installed.
The round part of the retaining clip should be facing forward when its installed. It makes no difference if the link is facing out or in to the tire as long as the retaiing clip is facing forward. For easy access its better to have the retaining clip facing out.
The VMX power delivery can be adjusted in a couple different ways to deliver smooth power and give you a better feel and less abrupt actions. Here is a setting that you can change in the transmitter and try out, see photo.
The steering can also be 'dampened' to reduce tank slapping when your driving at slower speeds. There is a setting called Exponential and this changes the output command of the radio from a linear command to a progressive command. The result is a feedback feeling that is softer around the neutral point.
Try different values and see what how you like the response of the VMX when you change this setting. Please see the attached PDF file. New updates include; 1) Revised chassis battery wire opening to accomodate the bullet style packs which are more common today. Also included will be a self stick foam pad to space the pack up into position which can be used optionally. 2) Scintered Steel Idle gear included and standard as a replacement part.
The plastic gears are discontinued. 3) Additional chassis strengthening at the steering stem area. The chassis was designed to protect itself and allow the Steering Stem part to fail in the event of a serious impact. This saves you time and money repairing the chassis and makes it easier to do. 4) Spur Gear Cover has be updated will one more flat head screw to pull it tighter to the alloy motor plate. This helps seal the spur gear better from dust and pebbles that can chew up gears. 5) Guide wire mounts have been improved with M4 x 4mm set screws from the previous M3's.
6) The gold color has been changed to a more rich gold color from the previous pale gold. We will continue to improve the VMX and so more updates will be announced as they are available.