Stihl FS 40 vs Ryobi ONE Plus for Clearing a 30-Metre Bramble Verge

Old bramble asks for a blade

Established bramble left alone for three or four seasons grows canes that are 15 to 20 mm thick at the base, with a woody core under the green skin. Nylon line deals with the soft tips, nettles, cow parsley, and this year’s whippy growth. Once it drops onto a two-year-old cane, it wraps, heats up, and knocks the cane sideways.

On a Ryobi ONE+ line trimmer, even twisted 2.4 mm line only goes so far. In heavy bramble the motor bogs, the line can snap back into the spool, and the job turns into repeated stops for line feed. The Stihl FS 40 C-E, when fitted with a 230 mm three-tooth grass blade, cuts the cane at the base because a rigid steel edge behaves very differently from plastic filament against wood.

The relevant pairing is the head on the machine and the material in the verge, and that is what decides whether the cane comes off cleanly.

Fitment matters before the engine does

In most markets the FS 40 C-E is supplied with a line head as standard. For the verge described here, that standard head is the part to put aside. The useful setup is the GSB 230-2 or a three-tooth grass blade, sold separately, along with the metal deflector and the blade-drive parts required to run steel legally and safely on that shaft.

With the blade fitted, the FS 40 C-E works through a cane in one pass, cutting low and dropping the length of bramble much like a scythe stroke. The 27.2 cc engine matters because it can keep that blade moving, but the blade is the part doing the work.

The Ryobi ONE+ route has no matching conversion. The 18-volt trimmers in that platform are built around a nylon line head and a plastic guard rated for that head. Bolting a metal blade to a tool that was never designed for the load risks the guard, the gearbox, and the operator’s fingers.

Used within its design, the Ryobi is a useful soft-growth machine. It can tidy a verge that is cut annually, or keep down grass, nettles, and fresh bramble while the stems are still soft. Pushed into neglected woody bramble, it stalls and consumes line because the job has moved beyond what the head can cut.

Battery time on 45 square metres

A 30-metre strip that is roughly a metre and a half deep gives about 45 square metres of dense growth. On a Ryobi ONE+ with a 4.0 Ah battery, real cutting time in heavy grass and nettle is usually somewhere between 18 and 30 minutes. The lower end arrives quickly when the head is forced into woody stems and the motor draws hard.

Bramble makes that draw constant. A single 4.0 Ah pack will be empty before the whole verge is cleared, so the work needs two or three batteries or a pause for charging. That is how a 90-minute clearance can become an afternoon.

The FS 40 C-E has a 0.34 litre fuel tank and runs a 50:1 petrol-oil mix. During brush work, that is roughly 40 to 50 minutes between fills. Refuelling from a jerry can takes under a minute, so a one-off clearance barely stops for fuel.

The battery machine suits a maintained verge visited monthly, where 20 minutes of cutting covers it and there is no two-stroke mix or starter cord to deal with. On the neglected 45 square metres described here, the runtime limit arrives while woody bramble is still standing.

A blunt grass blade punishes the engine

A three-tooth grass blade dulls faster in bramble than many owners expect. Grit on the canes and the occasional stone strike roll the edge, and a rolled edge tears the cane.

A flat file is enough for a field touch-up. Give each tooth face two or three strokes, keep the original bevel angle, and the blade stops loading the engine and throwing material so badly.

The tools after the cut

The strimmer only deals with standing growth. Once the canes are down, the heavy work shifts to crowns, cut lengths, and whatever was hidden under the mat of growth.

Root crowns are where a proper garden fork earns its keep. A fork left damp in a shed corner can pit within a season, and pitted tines drag hard through clay soil, grabbing and holding the wet earth as you try to lever. The useful habit takes seconds after use. Wipe the tines down. Push them into a bucket of sand mixed with a little linseed oil. The abrasive keeps the steel bright and the oil blocks moisture. Leave that habit out for a winter and the drag shows up when the next crown has to come out.

The cut canes need reducing for the green bin or bonfire. That is work for bypass loppers, the type where one blade passes the other like scissors. A sharp bypass lopper cuts bramble cleanly; a dull one crushes the cane and wrenches the wrist.

Sharpening those loppers is single-bevel work. File only the outer bevelled face, keep the factory angle, and leave the flat inner face as the reference surface that lets the two blades pass close to one another. A diamond file along the bevel, followed by one light pass to wipe the burr from the flat side, brings the tool back to the point where a 20 mm cane cuts without the crushing twist.

Secateurs handle the thin regrowth missed during clearance, and the same single-bevel rule applies. The Felco 2 bypass secateur is built so the blade unbolts and can meet a stone or diamond hone in seconds. When bypass secateurs crush stems, the usual causes are sharpening the wrong face or letting the pivot bolt loosen until the blades fail to meet properly. Those faults sit with maintenance, not with the basic tool design.

If an old stump is hiding in the verge, the trimmer and loppers reach their limit. A Fiskars X27 splitting axe is the wrong choice for felling, yet it is well suited to reducing a dry stump to burnable chunks once the stump is out of the ground. Its 91 cm handle and head-heavy balance put the effort into the swing.

Noise, vibration, and starting after storage

The FS 40 C-E puts out around 90-plus decibels at the operator’s ear and sends noticeable vibration through the loop handle. Stihl publishes vibration figures for that reason, and those figures matter during an afternoon of work. Ear defenders belong with the petrol machine.

The Ryobi is far quieter, closer to a loud domestic appliance, and it vibrates less because there is no reciprocating piston. On a suburban verge with neighbours ten metres away, that difference can drive the purchase more strongly than cutting power.

The FS 40 C-E has the C-E easy-start system, which reduces pull effort, but it still involves choke, primer, and the normal two-stroke routine. The Ryobi starts with a battery clip and a trigger pull.

For someone who uses a brush cutter twice a year, petrol storage becomes part of the running cost. After eight months in a damp shed, a two-stroke machine may refuse to start, and stale ethanol-blended petrol gumming the carburettor is the usual culprit.

Where each one belongs

The FS 40 C-E with a grass blade is the choice for a genuinely neglected woody verge that has to be cleared in one visit. The Ryobi ONE+ makes sense when the battery platform is already in the shed, the verge is cut every few weeks, and the growth stays soft and green.

A common disappointment comes from buying the quieter battery trimmer for an old bramble job, then finding melted line and half-cut canes where the verge was thickest. The machine has simply been given material that a line head cannot cut cleanly.

A one-time inherited verge leaves a separate question. After borrowed petrol power clears the old wood, how long can maintenance slip before soft regrowth becomes woody bramble again?