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New for 2013

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George Herrin
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« on: January 29, 2013, 01:00:01 pm »

Well folks we are gonna allow the kids to play!!! NEW CLASS for BTMRA ONLY

JUNIOR CLASS

AGE GROUP:  Must be at least 4 years old and no older than 10 years old or at discretion of race director.
MAX ENGINE: 6.75hp Vertical shaft of push mower origin or horizontal shaft clone engine. 3650 max rpm. No electric starts.
DRIVE TRAIN: Can use F/R gear boxes or 90 degree boxes and or jack shaft, multiple speed transmissions not allowed. Centrifugal clutches recommended. 16 to 1 final ratio with a 3650 rpm should be app 5 mph will adjust as needed, If this does not equal 5mph and Tech will have a way to check this. (ALL ROTATIONG PARTS I.E. JACK SHAFTS ETC MUST BE COVERED).
WHEELBASE AND MAXIMUM WIDTH: Recommended width is 34". Wheelbase is 37-38".
STEERING: Any improvement in steering is recommended, if stock steering is used it will be subject to tech inspectors discretion
FRAME: Must use the small 37"-38" wheelbase early MTD / Huffy style frames.  Fabricated frames are allowed using these dimensions: A rectangle measuring 42"x13" outside, using 1"x2" rectangular tubing. The front axle is place at one end, (MTD uses a piece of 3/8"x2" flat iron for a front axle) 1x2 tubing can be used. From the front axle center, measure back 37"-38" for rear axle centerline.  Customized or scaled down bodies allowed, they must resemble a lawn tractor. Ground clearance must be 2 to 4”.
BRAKES: Must be intact and working, any improvement in brakes is recommended.
WHEELS/HUBS:  Must use 6" max diameter wheels, steel or aluminium. Turf tires recommended, BUT KART STYLE TIRES ARE allowed if you have them with the 5mph speed limit tires will not be a factor. intent is to allow the DAD to use what he has lying around.
BUMPER/SIDE BARS: Rear bumpers are mandatory, must be in 1" from each side of the tire width and installed at the standard 7" height. Secondary loops are recommended. Front bumpers are optional, if installed see general rules.

A 5mph speed limit will be enforced.

This will be part of the half time show along with our power wheels.
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George Herrin #6
3 time USLMRA National Champion
8 time ARMA National Champion
Herrin Mower Sports Racing Team/Fat Boyz Racing
Hohenwald Tn. 38462
wk... 615-446-6807
http://btmra.smfforfree2.com
http://www.eccarburetors.com/

Life should not be a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly
proclaiming . . "WOW ---What a Ride

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bubba4trax
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« Reply #1 on: January 29, 2013, 08:21:51 pm »

Hey George, was wondering when u were gonna post on this. If you run a clone with clutch, do you still run gear box or jackshaft like supermods? Also, what RPM are we gonna set them at? What ground clearance?
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George Herrin
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« Reply #2 on: January 29, 2013, 09:29:26 pm »

jack shaft can be used with Horizontal. Ground height 2" minimum 4" max. RPM 3650 max. I fixed it in the rules read em over again. I stuck the not finished version  up sorry.
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George Herrin #6
3 time USLMRA National Champion
8 time ARMA National Champion
Herrin Mower Sports Racing Team/Fat Boyz Racing
Hohenwald Tn. 38462
wk... 615-446-6807
http://btmra.smfforfree2.com
http://www.eccarburetors.com/

Life should not be a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly
proclaiming . . "WOW ---What a Ride
bubba4trax
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« Reply #3 on: January 29, 2013, 09:36:57 pm »

yeah I just overlooked it 1st time, was just fixin to say i missed it. These are gonna be sit up style aren't they or supermod style. Hust trying to picture horizntal setup on traditional style.
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George Herrin
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« Reply #4 on: January 29, 2013, 09:46:52 pm »

here is what we are shooting for the look anyhow. preferably more sit up. BUT ALL moving parts must be covered.
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George Herrin #6
3 time USLMRA National Champion
8 time ARMA National Champion
Herrin Mower Sports Racing Team/Fat Boyz Racing
Hohenwald Tn. 38462
wk... 615-446-6807
http://btmra.smfforfree2.com
http://www.eccarburetors.com/

Life should not be a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly
proclaiming . . "WOW ---What a Ride
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