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Discussion Starter · #1 ·
4-season utility motorcycle (snow or not), the main objective of which is to be able to go practically everywhere. Very very low to pass under branches and tubes, Lateral flexibility to cross side slopes and also have a motorcycle type driving on hard or not. The weight is on the track (where traction is needed) and the track is long enough behind so that it doesn't tip over uphill. Can also pull small loads, sled, scraper, small trailer.

I wanted to test this configuration of a small, economical and versatile vehicle that I imagined. I took an approach that was more economical in materials, parts and time than the Small-Doo BMX. It’s more of a utility vehicle unlike the Small-Doo BMX which is sporty in powder only. Every part of the small-Doo BMX has been mechanically lightened, but not the Tracktor Bike and no carbon fiber.
First rides before the tracktor is finished (finishing and tuning are not done), stock 7hp engine with CIE transmission tuning, the Small-Doo BMX is a bomb next door even if it is the same base of engine. Plan to do a small setup at 12HP for the tracktor.

Weighs 214lbs with full gasoline and oil. It will be lighter with a ski instead of the tire with its steel rim in winter configuration. That is to say 1 month in the year if it is like the past winter ...
With a vehicle of this weight in rough terrain, it’s the driver who leads whether there is talent or not.

All aluminum frame except the front fork (steel) and HDPE plastic panels.
Quick reverse and neutral gear to be selected with a lever next to the seat. The side panels are quickly removable to access the transmission components.
Home made air front suspension (allows a wide range of adjustment) A little for comfort but above all to help traction in uneven terrain (so that not only the wheel and the rear of the track touch the ground at the bottom a hill) And also to adjust the tire pressure on the ground (or ski in winter) (Great effect on driving)

No rear suspension apart from the slight slack in the tires. Mainly for having a low seat (the transmission system fits right between the top of the track and the seat) and also for economy, simplicity and weight. The tires in the track allow much better traction when there is little or no snow. When there is a rock or a small tree trunk under the track, the track follows the shape of the ground instead of jacket the whole vehicle over the obstacle like a slide suspension. Essential wheel without snow so as not to destroy the slides and the track clips. However, when there is a lot of loose snow, the advantage of traction slides. I could have found spring buggies that would have done the job, but they are much heavier than plastic rim tires and most importantly there is very little lateral bank possible.

A single row of center wheels makes driving on hard surface very smooth almost like a motorcycle with tires, but with a little restraint when you expect a certain angle. This feature makes the ride better than my Small-Doo BMX despite its narrower track, rounded profile and flex in the suspension arm. It doesn't make sense that motorcycle track kits aren't all monorail not even a joint, it's like a motorcycle with corvette tires. I already knew that but it’s even more important than I thought. The only reason I didn't do the Small-Do BMX monorail was that I couldn't find a center clip track. For the snowmobile I am less convinced because 2 skis at the front ... all full of principle to destabilize the snowmobiles which have 3 points of support, but its remains a square wheel ... I prefer one or the other (fixed or fully flexible )

Some people might find skis, foot steps, at floating height funny. But they are extremely useful in very rough terrain. I took them off for a piece of Ryde and couldn't wait to find them. Whether it is on this snow melting at +16 degrees which is very slippery for a motorcycle, they allow the vehicle to be steered with little effort (a bit like on skis). On the rocks, sideways in a large trailer, in SIDE Hill at low speed. Unless you are a professional pilot, these skis allow you to really go anywhere with much less effort. They will also be very useful for balancing with a small trailer behind or a sled in rough terrain and for tight turns. The skis could be larger to be able to use them with snowshoes on their feet, which would be very useful for a maple syrup producer or trapper.


As soon as the ground or the path is drinkable, you just have to put your feet on the pegs (motorcycle steps). The ride is, not fast, but surprisingly smooth on the gravel paths.
This vehicle does not damage wet terrain with its very low ground pressure unlike an ATV or even worse a side by side or a jeep. (On private land it's still good) In the photos there are still places that go relatively well in 4x4 ATV, except 2 places where the mountain bike would have been lost suddenly, it is ditches that I dug in the swamp (black earth soaked all year round) but the Tracktor only sinks into the water, it does not reach the bottom, it bears on the small vegetation. Its limit is that it is not amphipious, you could go further with snockels and small floats, but I don't have a lake to cross.

So despite not being finished (so that he could try it out on slippery snow) he did very well. There is a plastic in the front that vibrates at a certain RPM. And a rubber band in front of the skis (installed on the field) made it possible to hold them well when you are not on them.
 

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Discussion Starter · #5 ·
The principle of a 4-season caterpillar has been tried out several times, but not all of them are easy to drive and more or less can be used everywhere.






https://www.pinterest.ca/search/pins/?q=tracked motorcycle&rs=typed&term_meta superbe=tracked%7Ctyped&term_meta superbe



 

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I assume you explored Rokon's? They have been making them for many years.
 

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Discussion Starter · #10 ·
There would be many possible uses with this type of vehicle.


For sugar bushes, tapping and repair tours which allowed to go very close to the workplace unlike a felt snowmobile or a tracked ATV which are blocked by the height of the tubes, the space between the trees or the inclination of the side of the land. Can continue to be used when the terrain is half snowed or not snowed. The ability to keep the rackets on would save a lot of effort. An electric version would be great for leak detection (no need to stop the engine)





For trappers, it would be easy to get it on a small plane for those who are in a very remote area.





For hunting





Ice fishing or summer fishing to get to the lake. It would even be possible to mount it in a chalouppe (portage)





To transport all that is necessary for the work around a chalet in the woods





For forest prospecting when there is no way





For 4 season Fat bike trail maintenance





Electrical line inspection





Amuse the children





And for fun, as I will mainly be using it. Have fun going in places where it doesn't normally happen. Unlike the big, fashionable off-road vehicles, it doesn't need space to enjoy it and you can explore all corners without damaging the terrain too much.





A Snow Dog can be used for most of these uses, but is very limited in terms of traction and is very tiring to drive. I had found a way to dramatically increase towing capacity this fall, but it doesn't easily drive like a vehicle the driver is sitting on. In Russia, there are modules with 2 wheels or modules with 2 skis in front which facilitates driving and greatly improves the ability to climb hills. But the weight distribution and the driving position leave something to be desired (difficult or impossible to control on a side slope)



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Is this a project for you, or are are you/someone planning to sell these?
 

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Another whiz-bang machine from the master! (y) (y)
 

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Discussion Starter · #14 ·
Finishing the Tracktor Bike, it was a long time to be completed despite being fully functional.

Engine, camshaft, Exhaust, air inlet, carburetor machining, Head machining (height and porting), valve machining, Airflow measurements at 28 inches of vacuum water with all parts in place. I didn't go far with airflow and compression, because I kept the original (cast) piston and it can still run on pump gas.
If I would just install the performance parts or kit sold for the gx200, the gain would be minimal and it wouldn't even work well.

Modifications of clutch drive and driven.

The engine is now very responsive and accelerates the track in the air to its maximum speed (40km / h) while turning the gas grip.

LiFO battery that weighed almost nothing. House regulator (because those bought did not work with the motor coil) temperature and RPM indicator.
Hand protectors. Improved side skis and running boards (folding peg) Front skis to replace the wheel when there is a lot of snow. Waterproof bags for tools and accessories. Coupling sleds and trailer. Non-slip seat. Despite its large surface area, the ski weighs 10lbs less than the tire and rim. A skis that tracks loose snow in front of the track is much more efficient than 2 skis that tracks on each side.

I tested with a trailer just to find out how to handle it. The empty trailer (made of good thickness steel) is much heavier than the Tracktor Bike. Despite the length of the track which rubs on the ground, the low weight on the front wheel, its turns tight. Because you can force the incline with the side skis. The side skis allow you to go backwards, otherwise you would have to run backwards to keep your balance. The skis do not touch the ground when you have your feet on the steps. They are used for low speed maneuvering, which will limit wear. It is not the ideal vehicle for towing a heavy trailer, but it can still do so unlike a snowbike. A small trailer not too wide would allow it to squeeze all over the wood. While passing under the tubing. With a seat height of 26 inches.
















 

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Discussion Starter · #17 ·
I did not respect the towing capacity I entered behind (680lbs). The density of the 32 inch (cylindrical) logs is approximately 1300lbs excluding the weight of the trailer. The vehicle weighs 220lbs, Its skates a bit when I stop and start going up. It is a good test for transmission components and driving. With trailer and driver weight, this gives a load 7.5 times higher than the weight of the vehicle, it is worse than an ant which can carry 10 to 50 times its weight.

Of course a 4x4 ATV is more suitable for this type of work, but it is one more function that is added to the tracktor bike, so a snowmobile (without snow), an off-road motorcycle or a snow bike cannot accomplish .

The turning radius with the tandem trailer (which opposes the change of direction) is still amazing, it's better than a small snowmobile with a plow behind (on snow)









 

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Discussion Starter · #18 ·
The new rear suspension does a very good job. This is of course not a motocross suspension for jumping, but a suspension to improve traction, handling and comfort on uneven terrain, as well as to improve the ease of riding the to turn like a motorcycle. It would have been easier to put in old snowmobile buggies, but they are very heavy, they do not allow the track to be tilted easily, the springs are stiff in T (I don't know who calibrated this ... ) and they do not support the track over its entire length, which is important for maximum traction in all conditions. (there is a whole of 4 '' every 4 '', shifted left to right otherwise they would lean one on the other) These are aluminum scooter wheels, there were no snowmobile wheels in these affordable dimensions. Despite the small bearings, they are double, maximum dynamic load of 720lbs, maximum RPM 34000 rpm, no danger, the springs limit the individual load of the casters to approximately 30lbs per caster.

It floats on small obstacles, it is not like a tire or a slide suspension which must necessarily go up over the obstacle and fall back coated (the suspension absorbs the blow but never at 100%) whereas here it is. is the obstacle that fits into the track (about 3 rollers are compressed, while the other 8 are not compressed vehicle) for obstacles of 4 '' and less, the height of the does not change the height of the vehicle does not change hardly any, so you don't feel anything on the seat. Despite the front air suspension combined with the balloon tire inflated to just 3PSI, there is more backlash at the front than at the rear.







 

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Discussion Starter · #19 ·
My main idea with this vehicle (much like my snowmobiles) is to be able to go places that I wouldn't dare to try with other vehicles, whatever the season.

Unlike a slider suspension (which is great when there is enough snow) almost all of the track's stud stays in contact with the ground, it's well away from the ground surface of a motorcycle tire. On a snowmobile, in early season conditions, on good climbs if there is a rock or a small tree trunk under the track, things start going backwards.

And on the way up, there is not a lot of weight on the front wheel, everything is on the track. The center of gravity is low, the track stretches very far behind the rider, so it doesn't tip back like an ATV or motorcycle could. I believe the angle and traction limit comes at the same time as the float carburetor which does not work through an angle if you go too slowly. So a longer track, a 2-stroke pump or electric to pass this course.

And for lateral inclinations, the downforce is only in the center of the track and in the center of the tires combined with the featherweight (a little less heavy than a competition motocross), it is very easy to hold the vehicle that one is sitting on it, standing, kneeling or lying next to it.

The handlebars and stabilizers often catch the trees when there is not 2 feet between the trees, hands a left right lean allows to pass. The stabilizers may seem superfluous, but they save a lot of effort at low speed in the ruff and when it starts backing up. It is just a matter of putting light pressure (the weight of the legs and boots)

On a motorcycle, when you put your foot on the ground suddenly, you take your weight off the seat, loss of Momentum, loss of traction. It would be difficult to slide his boot directly on the obstacle-ridden ground. The ideal would be to be a pro trail bike (they stay balanced in place, on a wheel!) But I am far from it. And you have to think that there are branches and pipes in the air, it would be difficult to stand on a motorcycle early on.































 
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