Before participating in any lawn mower racing event, you have to choose your racing division˳ The American Racing Mower Association has 7 divisions, ranging from novice to expert˳
ARMA – Kids Stock, Adult Stock
This is the novice level using stock lawn mowers˳ The governor should not be removed, the wheelbase is stock, and the front and rear rims are original˳ In short, just remove the blades and ride it to the finish line˳ It’s a great “beginners” division˳
ARMA – Kids Super Stock, Adult Super Stock
A little quicker ad a little slicker, but still considered entry level lawn mower racing˳ You will be able to modify a few things to your racing mower˳
- A governed engine is required, but it can be 3650RPM, single cylinder OHV or VIB no more than 465cc and 15HP˳
- Full size mowers with a wheelbase of 39″
- Front wheel should be 6″ with tires ranging from 13″ to 15″
- Rear wheels should be 8″ with 16″ tires˳
- Tire pressure up to 15 PSI˳
- Air cleaner, air filter, and an open exhaust are allowed˳
- The frame and the inside of the rims can be reinforced for added durability˳
- The shift mechanism should be original with a maximum gear ratio of 8-1˳
- The body must be stock complete with factory deck˳
- Spindles in front must be minimum 5/8″˳
ARMA – Mini Sportsman
Now it’s getting exciting˳ This is a lawn mower racing division for those who want to build their own racing mower from scratch˳
- There are no restrictions on internal engine modifications˳ (Sweet!)
- Engines should be 4 stroke, valve in block, and not greater than 8˳5HP and 19 cubic inches˳ (You’ll be eating dust if you use an inferior engine˳)
- The chassis should have a minimum wheelbase of 34″
- The front and rear wheels have minimums of 4″ and 6″ respectively˳
ARMA – Sportsman
This division is for those who have a little lawn mower racing experience and a few racing mower stories˳
- As with the Mini-Sportsman, engines should be valve in block, single cylinder 4 stroke, but can be over 8˳5HP
- A minimum and unaltered chassis of 39″˳
- Front wheels are 5″ minimum
- Rear wheels are 6″ minimum and 8″ maximum˳
- No mid engine frames allowed in this division˳
ARMA – Mod X
Now we are getting to the advanced divisions˳
- You get to use a more advanced single OHV and Twin Opposed VIB with under 20HP˳
- A minimum wheelbase of 39″ for the chassis of you racing mower˳
- Still no mid engine frames˳
- 5″ minimum for the front wheels and 6″ to 8″ for the rear wheels˳
ARMA – Super Sportsman
Just by the name of it, you’ll know that this division is something special˳ This is where you’ll see the fast and the furious of lawn mower racing˳
- Powerful all overhead valve, 2 cylinder, 4 stroke, and up to 25HP engines are used˳ Try mowing your lawn with this baby˳
- A wheelbase of 42″ for the chassis
- Stock frames
- 6″ minimum for the front wheels and 6″ to 8″ for the rear wheels˳
ARMA – Pro X
This is where the best of the best hang out˳ It is the dream of every lawn mower racing enthusiast to compete in this division˳ Ever seen a racing mower dig dirt and drift on corners?
- Single cylinder and 4 stroke engines with no max on HP˳
- Mid engine frames are allowed˳
- A maximum chassis of 42″˳
- 45″ maximum for pan style frames˳
- You can shorten the wheelbase to up to 37″˳
- Front and rear wheels are 4″ to 8″ respectively˳
- You may use kart tires, as well as add stagger˳ But, no offsetting the wheels˳
- No round tubing and chrome molly tubing allowed˳
Those are the 7 lawn mower racing divisions under the American Racing Mower Association˳ If you are new to the sport and haven’t ridden a racing mower yet, you might want to start out in the novice divisions and work your way up to the Pro X division˳
Source by https://ezinearticles˳com/?Racing-Divisions-and-Noted-Rules-of-the-Arma&id=3315651
