All NR/CTPA members,
I wanted to share something we've been working on with pullers that will be visiting us from Holland. Two of their RC tractors are nitro powered (4-stroke engines) Super Stock style tractors (a John Deere and a Ford). Therefore we have come together on a newly created class for these 2 Super Stock Tractors from Holland that we are calling the ?International Super Stock Tractor Challenge.? We have come up with rules drawing on 3 different tractor classes we have just started to run in Canada and the US, with consideration to the rules (as we understand them) for the Super Stock Tractors from Holland. Here is what we propose: A class open to RC pulling vehicles that resemble a Super Stock Tractor (meaning they have a Tractor style body, and agricultural style rear ?bar? tires, and are approximately 1/10 scale of a full size Super Stock pulling tractor). They must be two wheel drive only. The engine can be 4-stroke, 2-stroke, or electric. There is no limit on the size of the 4-stroke, and 2-stoke engines, but there is a limit on the electric motor (maximum of a 540 size can brushless or brushed). There are no limits on the type of fuel (any percentage of nitro), but there is a limit on the battery for the electric vehicles of a 3s lipo max (or 12 cell max if using NiCad or NiMH batteries). The maximum vehicle weight is 10 lbs (4.53 Kg) and the maximum hitch height is 3.5 inches (88.9 mm). This class will run on dirt and use a smoke evacuation system.
To give you an idea of the 3 Tractor Classes (North American) that we are drawing on to make up this class they are as follows:
A Light Super Stock Tractor class using 3.3 cc 2-stroke engines with a maximum hitch height of 3 inches and vehicle weight of 8 lbs (so we are raising the hitch 0.5 inch and adding 2 lbs of weight to these vehicles).
A Heavy Nitro Super Stock class using 0.56 cubic inch 4-stroke engines with a maximum hitch height of 4 inches and vehicle weight of 10 lbs (so we are just lowering the hitch by 0.5 inch on these vehicles).
A Heavy Super Stock class using brushless electric motors with a 3 inch hitch, and 12 lb vehicle weight (so we are raising the hitch 0.5 inches, and lowering the weight by 2 lbs on these tractors).
So you can see that we have tried to come up with a compromise where each of these 3 different North American Tractor classes has to change a bit to come together on a common set of guidelines that we think will also work for the 2 Super Stock Tractors from Holland. We have done some testing and it appears that the hitch height of 3.5 inches and vehicle weight of 10 lbs works fairly well for the sled we will be using (which has a 8 inch chain). Therefore the 3.5 inch hitch height will provide for a similar chain angle to what the Dutch Super Stock tractors are used to we think.
The Dutch have replied favorably to this sort of idea and seem eager to see how their vehicles compare with those from the US and Canada. They are not exactly sure how much they can adjust their hitches to better match with our 8 inch chain on the sled (they are running with approximately a 4 inch chain). So we have also stated that we will try to work with them as much as possible to adjust our hitch height to match what every they are able to achieve within the range of 3.0 to 3. inches. This final clarification will probably take place at the Worlds when we all get together as they have already shipped their vehicles and therefore are unable to modify them at this point. There are about 10 vehicles at this point that are likely to run in this class (including the 2 from Holland), but more are welcome. It seems that a Pro Stock Tractor (dirt) could fit in these guidelines as could a Pro Stock Carpet Tractor (although more adjustments would likely be needed to gearing, and maybe tires, etc. to run on dirt) However, these are possibilities and if anybody is interested in this class please let me know. Andy will be accepting pre-registration for this class up to Sunday (Oct 3), so if your interested please pre-register (although since this is such short notice, registration at the event will be acceptable, but you may get added to the end of the class order).
For this special situation, it will be permitted to run a vehicle in this International Challenge class that is also running in another class (so we are making an exception to the one-chassis-one-run rule, so that we will have vehicles available to compete with our Dutch visitors).
We very much look forward to meeting all of the visitors from Holland, and having a friendly competition to show how all of these vehicles can perform.
Ed
I wanted to share something we've been working on with pullers that will be visiting us from Holland. Two of their RC tractors are nitro powered (4-stroke engines) Super Stock style tractors (a John Deere and a Ford). Therefore we have come together on a newly created class for these 2 Super Stock Tractors from Holland that we are calling the ?International Super Stock Tractor Challenge.? We have come up with rules drawing on 3 different tractor classes we have just started to run in Canada and the US, with consideration to the rules (as we understand them) for the Super Stock Tractors from Holland. Here is what we propose: A class open to RC pulling vehicles that resemble a Super Stock Tractor (meaning they have a Tractor style body, and agricultural style rear ?bar? tires, and are approximately 1/10 scale of a full size Super Stock pulling tractor). They must be two wheel drive only. The engine can be 4-stroke, 2-stroke, or electric. There is no limit on the size of the 4-stroke, and 2-stoke engines, but there is a limit on the electric motor (maximum of a 540 size can brushless or brushed). There are no limits on the type of fuel (any percentage of nitro), but there is a limit on the battery for the electric vehicles of a 3s lipo max (or 12 cell max if using NiCad or NiMH batteries). The maximum vehicle weight is 10 lbs (4.53 Kg) and the maximum hitch height is 3.5 inches (88.9 mm). This class will run on dirt and use a smoke evacuation system.
To give you an idea of the 3 Tractor Classes (North American) that we are drawing on to make up this class they are as follows:
A Light Super Stock Tractor class using 3.3 cc 2-stroke engines with a maximum hitch height of 3 inches and vehicle weight of 8 lbs (so we are raising the hitch 0.5 inch and adding 2 lbs of weight to these vehicles).
A Heavy Nitro Super Stock class using 0.56 cubic inch 4-stroke engines with a maximum hitch height of 4 inches and vehicle weight of 10 lbs (so we are just lowering the hitch by 0.5 inch on these vehicles).
A Heavy Super Stock class using brushless electric motors with a 3 inch hitch, and 12 lb vehicle weight (so we are raising the hitch 0.5 inches, and lowering the weight by 2 lbs on these tractors).
So you can see that we have tried to come up with a compromise where each of these 3 different North American Tractor classes has to change a bit to come together on a common set of guidelines that we think will also work for the 2 Super Stock Tractors from Holland. We have done some testing and it appears that the hitch height of 3.5 inches and vehicle weight of 10 lbs works fairly well for the sled we will be using (which has a 8 inch chain). Therefore the 3.5 inch hitch height will provide for a similar chain angle to what the Dutch Super Stock tractors are used to we think.
The Dutch have replied favorably to this sort of idea and seem eager to see how their vehicles compare with those from the US and Canada. They are not exactly sure how much they can adjust their hitches to better match with our 8 inch chain on the sled (they are running with approximately a 4 inch chain). So we have also stated that we will try to work with them as much as possible to adjust our hitch height to match what every they are able to achieve within the range of 3.0 to 3. inches. This final clarification will probably take place at the Worlds when we all get together as they have already shipped their vehicles and therefore are unable to modify them at this point. There are about 10 vehicles at this point that are likely to run in this class (including the 2 from Holland), but more are welcome. It seems that a Pro Stock Tractor (dirt) could fit in these guidelines as could a Pro Stock Carpet Tractor (although more adjustments would likely be needed to gearing, and maybe tires, etc. to run on dirt) However, these are possibilities and if anybody is interested in this class please let me know. Andy will be accepting pre-registration for this class up to Sunday (Oct 3), so if your interested please pre-register (although since this is such short notice, registration at the event will be acceptable, but you may get added to the end of the class order).
For this special situation, it will be permitted to run a vehicle in this International Challenge class that is also running in another class (so we are making an exception to the one-chassis-one-run rule, so that we will have vehicles available to compete with our Dutch visitors).
We very much look forward to meeting all of the visitors from Holland, and having a friendly competition to show how all of these vehicles can perform.
Ed
