TRELLEBORG PNEUTRAC SPECS
▶ Sizes: 280/70 T18, 480/65 T28 en 650/65 T38 (prototype)
▶ Rim: fits standard rims ▶ Weight: 280/70 T18: 70kg with rim. 480/65 T28: 230kg with rim
▶ Availability: 18 and 28 inch limited available in 2019
▶ Price: not known. Expected somewhere in between modern VF-tyre and tracs
The PneuTrac is quite at home with low tyre pressure: that is where it excels. When pressure increases, the track tyre behaves in exactly the same way as a conventional tyre.
17% greater traction with PneuTrac tyres
What’s striking is that the difference in trac- tive force between conventional tyres (yellow line) and the PneuTrac (blue line) is greatest at between 20 and 30% slippage. On average over all of these measurements, the differ- ence in tractive force of 17.6% is in favour of the PneuTrac. According to the researchers of the CREA testing institute, you could directly convert that increase of 17.6% into a fuel sav- ing and/or a time saving. One possible reason for the increase in traction is the PneuTrac’s smooth, flat contact surface with the ground, regardless of the tyre pressure. The test was performed on stony soil that otherwise consisted of clay (6.4%) and sand (47.1%). The measurements were carried out by the independent research institute CREA. The test measurements were carried out dur- ing motion using an 8.2 metric tonne-John Deere 7530, while the braking vehicle was a
1000 2000 3000 4000 5000 6000
0 10 15 20 25 Percentage slip (%)
Track tyres Trelleborg Pneutrac 480/65 T28 (0.6 bar) and 600/65 TR38 (0.8 bar) Radial tyres Trelleborg TM800 480/65 R28 (1.2 bar) and TM800 600/65 R38 (1.2 bar)
On average the difference in traction is 17.6% in favour of the PneuTrac. According to the researchers of the CREA that means a a fuel and/or a time saving.
Same Galaxy 170 carrying measuring equip- ment.
▶ FUTURE FARMING | 22 February 2019 29 30 35 40
Traction (kg)
FOTO: ILLUSTRATION: MISSET
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