Table 1 Specifications for stock Valmar 1255 Twin Roller.

From: Development of a novel precision applicator for spot treatment of granular agrochemical in wild blueberry

Component

Description

Material

Stainless steel

Hopper

0.51 m3

Boom Width

7.31 m

Boom Height

Adjustable (0.56–0.86 m)

Boom Type

Self-levelling

Boom Orifices

12

Hosing

31.75 mm ID spiral flex

Fan Impeller

0.46 m

Impeller rpm

3,200–4,000 rpm

Impeller Drive

Honda GX 270 (6.3 kW at 3600 rpm net power)

Metering

Ground driven

Metering Drive

Hydraulic motor

Sections

2 metering (left boom, right boom)

Rollers

12 and 28 groove options

Height

1.82 m

Width (closed)

2.08 m

Length

2.61 m

Weight

489.88 kg