Best battery operated mower for thicker lawn

1 Lucky Texan

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Feb 26, 2013
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here's the Ansi spec (about halfway down is the 19000fpm tip speed spec);

e) Power lawnmowers--(1) General requirements. (i) Power lawnmowers
of the walk-behind, riding-rotary, and reel power lawnmowers designed
for sale to the general public shall meet the design specifications in
``American National Standard Safety Specifications for Power
Lawnmowers'' ANSI B71.1-X1968, which is incorporated by reference as
specified in Sec. 1910.6. These specifications do not apply to a walk-
behind mower which has been converted to a riding mower by the addition
of a sulky. Also, these specifications do not apply to flail mowers,
sicklebar mowers, or mowers designed for commercial use.
(ii) All power-driven chains, belts, and gears shall be so
positioned or otherwise guarded to prevent the operator's accidental
contact therewith, during normal starting, mounting, and operation of
the machine.
(iii) A shutoff device shall be provided to stop operation of the
motor or engine. This device shall require manual and intentional
reactivation to restart the motor or engine.
(iv) All positions of the operating controls shall be clearly
identified.
(v) The words, ``Caution. Be sure the operating control(s) is in
neutral before starting the engine,'' or similar wording shall be
clearly visible at an engine starting control point on self-propelled
mowers.
(2) Walk-behind and riding rotary mowers. (i) The mower blade shall
be enclosed except on the bottom and the enclosure shall extend to or
below the lowest cutting point of the blade in the lowest blade
position.
(ii) Guards which must be removed to install a catcher assembly
shall comply with the following:
(a) Warning instructions shall be affixed to the mower near the
opening stating that the mower shall not be used without either the
catcher assembly or the guard in place.

[[Page 668]]

(b) The catcher assembly or the guard shall be shipped and sold as
part of the mower.
(c) The instruction manual shall state that the mower shall not be
used without either the catcher assembly or the guard in place.
(d) The catcher assembly, when properly and completely installed,
shall not create a condition which violates the limits given for the
guarded opening.
(iii) Openings in the blade enclosure, intended for the discharge of
grass, shall be limited to a maximum vertical angle of the opening of
30[deg]. Measurements shall be taken from the lowest blade position.
(iv) The total effective opening area of the grass discharge
opening(s) shall not exceed 1,000 square degrees on units having a width
of cut less than 27\1/2\ inches, or 2,000 square degrees on units having
a width of cut 27\1/2\ inches or over.
(v) The word ``Caution.'' or stronger wording, shall be placed on
the mower at or near each discharge opening.
(vi) [Reserved]
(vii) Blade(s) shall stop rotating from the manufacturer's specified
maximum speed within 15 seconds after declutching, or shutting off
power.
(viii) In a multipiece blade, the means of fastening the cutting
members to the body of the blade or disc shall be so designed that they
will not become worn to a hazardous condition before the cutting members
themselves are worn beyond use.
(ix) The maximum tip speed of any blade shall be 19,000 feet per
minute.
(3) Walk-behind rotary mowers. (i) The horizontal angle of the
opening(s) in the blade enclosure, intended for the discharge of grass,
shall not contact the operator area.
(ii) There shall be one of the following at all openings in the
blade enclosure intended for the discharge of grass:
(a) A minimum unobstructed horizontal distance of 3 inches from the
end of the discharge chute to the blade tip circle.
(b) A rigid bar fastened across the discharge opening, secured to
prevent removal without the use of tools. The bottom of the bar shall be
no higher than the bottom edge of the blade enclosure.
(iii) The highest point(s) of the front of the blade enclosure,
except discharge openings, shall be such that any line extending a
maximum of 15[deg] downward from the horizontal toward the blade shaft
axis (axes) shall not intersect the horizontal plane within the blade
tip circle. The highest point(s) on the blade enclosure front, except
discharge-openings, shall not exceed 1\1/4\ inches above the lowest
cutting point of the blade in the lowest blade position. Mowers with a
swingover handle are to be considered as having no front in the blade
enclosure and therefore shall comply with paragraph (e)(2)(i) of this
section.
(iv) The mower handle shall be fastened to the mower so as to
prevent loss of control by unintentional uncoupling while in operation.
(v) A positive upstop or latch shall be provided for the mower
handle in the normal operating position(s). The upstop shall not be
subject to unintentional disengagement during normal operation of the
mower. The upstop or latch shall not allow the center or the handle
grips to come closer than 17 inches horizontally behind the closest path
of the mower blade(s) unless manually disengaged.
(vi) A swing-over handle, which complies with the above
requirements, will be permitted.
(vii) Wheel drive disengaging controls, except deadman controls,
shall move opposite to the direction of the vehicle motion in order to
disengage the drive. Deadman controls shall automatically interrupt
power to a drive when the operator's actuating force is removed, and may
operate in any direction to disengage the drive.
(4) Riding rotary mowers. (i) The highest point(s) of all openings
in the blade enclosure, front shall be limited by a vertical angle of
opening of 15[deg] and a maximum distance of 1\1/4\ inches above the
lowest cutting point of the blade in the lowest blade position.
(ii) Opening(s) shall be placed so that grass or debris will not
discharge directly toward any part of an operator seated in a normal
operator position.

[[Page 669]]

(iii) There shall be one of the following at all openings in the
blade enclosure intended for the discharge of grass:
(a) A minimum unobstructed horizontal distance of 6 inches from the
end of the discharge chute to the blade tip circle.
(b) A rigid bar fastened across the discharge opening, secured to
prevent removal without the use of tools. The bottom of the bar shall be
no higher than the bottom edge of the blade enclosure.
(iv) Mowers shall be provided with stops to prevent jackknifing or
locking of the steering mechanism.
(v) Vehicle stopping means shall be provided.
(vi) Hand-operated wheel drive disengaging controls shall move
opposite to the direction of vehicle motion in order to disengage the
drive. Foot-operated wheel drive disengaging controls shall be depressed
to disengage the drive. Deadman controls, both hand and foot operated,
shall automatically interrupt power to a drive when the operator's
actuating force is removed, and may operate in any direction to
disengage the drive.

[39 FR 23502, June 27, 1974, as amended at 43 FR 49750, Oct. 24, 1978;
49 FR 5323, Feb. 10, 1984; 50 FR 4649, Feb. 1, 1985; 61 FR 9240, Mar. 7,
1996]
 

Bizno

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Depending on your process range
120v Redback mower single 3ah battery(same price as 80v kolbalt)
Or
120v yardforce..I personally have this ..self propel dual 2.5 ah batteries..cuts both front and back overgrown yard.
Will cut both in 1hr 15 mins and still have one untouched battery.
 
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