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y0733 Big Scale-EXTREME, adjustable 3 - shoe clutch

Product information "y0733 Big Scale-EXTREME, adjustable 3 - shoe clutch"

With the Big Scale-EXTREME an adjustable clutch for very special requirements has been designed:
  • For large-displacement engines
  • For heavy or high traction cars (Losi, HPI)
  • For modified performance engines
  • For the demanding off-road use


Rapid wear of a clutch is a sign of constant slipping, even beyond engagement speed. In this case, the clutch does not transfer the applied torque.

This is where the Big ScaleEXTREME sets a new standard.
The new design of the "Extreme" prevents the centrifugal forces of clutch springs or lever side of the clutch shoes from counteracting the centrifugal force of the friction pad side even after engagement.
As a result this clutch can transfer lots of power with minimal wear.

The new design ensures that the centrifugal forces are transferred in full to the clutch lining. Precise engagement and disengagement even under high loads and inside of closed clutch bell carriers means no problem for this clutch.

The clutch can be easily adjusted to the engagement speed through three set screws without clutch bell removal, so you can match the characteristics of your engine.

The special clutch lining of the Big Scale-EXTREME is particularly wear-resistant and - especially in combination with a high-quality nitrited clutch bell (), guarantees for an exceptionally long service life! Contrary to the "Cross" or "Race" version there's no need to uninstall the clutch from the engine for maintenance. All parts are easily accessible from the front after removing the front plate.

Please see the specifications tab for further information and handling advices!

The regular price of the Big Scale-EXTREME is EUR 139.90

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Accessories / Spare parts

y0743 Clutch-Safe 10 g, adhesive especially for clutch pads
y0743 Clutch-Safe 10 g, adhesive especially for clutch pads

Special single component epoxy adhesive for bonding clutch shoes; suitable for extreme operating temperatures (up to 200°C!) Important note for processing: For the final cure of the bond Clutch-Safe must be tempered at 170°C for 1 hour! (1 hour at 170°C in the oven!) The extremely high temperature load on the clutch shoes when used in off-road cars caused by increased clutch slippage, the shock of jumps and the combination with sometimes very high vehicle weights (up to 18 kg!) make bonding with Clutch-Safe highly recommended. For later removal/replacement of worn out clutch pads the clutch shoes must be heated as well.Attention:Clutch-Safe adhesive must be stored in the fridge! Content: 10g tube

Content: 10 Gramm (€495.00 / 1000 Gramm)

Regular price: €4.95
y0733/02 Extremely wear resistant organic friction pad
y0733/02 Extremely wear resistant organic friction pad

Extremely wear resistant organic friction pad, spare part for BigScale Extreme clutch.Since the connection between lining and shoe is highly loaded, the careful bonding with curing in an oven is of particular importance. Please use exclusively the special Clutch-Safe glue #y0743.You can find ready-to use cluth shoes with correctly bonded friction pads under at # y0733/01.

Regular price: €34.90
y0733/03 Mounting screws for friction pads and front plate
y0733/03 Mounting screws for friction pads and front plate

Mounting screws for friction pads and front plate, spare part for BigScale Extreme clutch.Dimensions:M3 x 7 mm (f0r 2 mm allen wrench)

Regular price: €3.90
y0733/04 Pressure plate, 0.8 mm flange
y0733/04 Pressure plate, 0.8 mm flange

Pressure plate, 0.8 mm flange thickness, spare part for BigScale Extreme clutch.

Regular price: €9.90
y0733/05 Pressure plate, 1.5 mm flange thickness
y0733/05 Pressure plate, 1.5 mm flange thickness

Pressure plate, 1.5 mm flange thickness, spare part for BigScale Extreme clutch.

Regular price: €9.90
y0733/061 Clutch spring green, 1.4 mm, 3 pcs.
y0733/061 Clutch spring green, 1.4 mm, 3 pcs.

Clutch spring green, 1.4 mm, optional part for BigScale Extreme clutch.

Regular price: €9.90
y0733/062 Clutch spring black, 1.5 mm, 3 pcs.
y0733/062 Clutch spring black, 1.5 mm, 3 pcs.

Clutch spring black, 1.5 mm, spare part for BigScale Extreme clutch, stock spring.

Regular price: €9.90
y0733/063 Clutch spring white, 1.6 mm, 3 pcs.
y0733/063 Clutch spring white, 1.6 mm, 3 pcs.

Clutch spring white, 1.6 mm, optional part for BigScale Extreme clutch.

Regular price: €9.90
y0733/064 Clutch spring orange, 1.7 mm, 3 pcs.
y0733/064 Clutch spring orange, 1.7 mm, 3 pcs.

Clutch spring orange, 1.7 mm, optional part for BigScale Extreme clutch.

Regular price: €9.90
y0733/065 Clutch spring candy red, 1.8 mm, 3 pcs.
y0733/065 Clutch spring candy red, 1.8 mm, 3 pcs.

Clutch spring candy red, 1.8 mm, optional part for BigScale Extreme clutch.

Regular price: €9.90
y0733/07 Adjustment screw M5x7.6 mm, 3 pcs.
y0733/07 Adjustment screw M5x7.6 mm, 3 pcs.

Adjustment screw M5x7.6 mm, spare part for BigScale Extreme clutch (2.5 mm allen wrench size).

Regular price: €9.90
y0733/08 Clutch body
y0733/08 Clutch body

Clutch body, spare part for BigScale Extreme clutch.

Regular price: €29.90
y0733/09 Front plate
y0733/09 Front plate

Front plate, spare part for BigScale Extreme clutch.

Regular price: €19.90
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TLR256012 TLR Air Cleaner Foam Elements 5ive-B
TLR256012 TLR Air Cleaner Foam Elements 5ive-B

Genuine TLR spare/option part.Spare part for TLR/Losi 5ive-B.Contents:1 piece

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y0351 Losi Offroad tuning spring Dirt-Spring for Losi 5ive-T/2.0/ Mini and UFRC Growler GX1
y0351 Losi Offroad tuning spring Dirt-Spring for Losi 5ive-T/2.0/ Mini and UFRC Growler GX1
y0351 Version: y0351/12 - Losi long, black

Genuine HT spare/option part. Fits Losi 5ive-T und Mini, UFRC Growler GX1, Carson Gas Devil/ Hell Devil 4x4. Not for Thunderbolt!.Dimensions:Socket: approx 33 mmInner diameter: approx 31 mmOuter diameter: 37 mmLength short spring: 103 mmCoils short spring: 8 StückLength long spring: 143 mmCoils long spring: 10 StückFront axle:TypeMeasuresColorItem N°Losi2.3 x 103 mmyellowy0351/01Losi2.4 x 103 mmredy0351/02Losi2.6 x 103 mmbrowny0351/03Losi2.75 x 103 mmbluey0351/04Losi2.8 x 103 mmsilvery0351/05Losi2.9 x 103 mmblacky0351/06Rear axle::TypeMeasuresColorItem N°Losi2.3 x 143 mmyellowy0351/07Losi2.4 x 143 mmredy0351/08Losi2.6 x 143 mmbrowny0351/09Losi2.75 x 143 mmbluey0351/10Losi2.8 x 143 mmsilvery0351/11Losi2.9 x 143 mmblacky0351/12Contents:2 pieces

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y1478 pump for re-fueling and de-fueling
y1478 pump for re-fueling and de-fueling

The pump will fill and empty the fuel tank within seconds.The pump has a vent valve to avoid overpressure. Do not store gasoline for longer than 60 minutes in the gun.Occasionally lubricate the rubber seal of the piston with some grease. To do this, the handle-side cap of the cylinder can be unscrewed and the pump can be disassembled.The clear hose has been blackened in the picture for presentation purpose only.Color: blue.Filling capacity:500 mlContent:1 piece

Regular price: €19.90
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y0733/02 Extremely wear resistant organic friction pad
y0733/02 Extremely wear resistant organic friction pad

Extremely wear resistant organic friction pad, spare part for BigScale Extreme clutch.Since the connection between lining and shoe is highly loaded, the careful bonding with curing in an oven is of particular importance. Please use exclusively the special Clutch-Safe glue #y0743.You can find ready-to use cluth shoes with correctly bonded friction pads under at # y0733/01.

Regular price: €34.90
2 block tuning clutch y0051 adjustable for Zenoah, 1 piece
2 block tuning clutch y0051 adjustable for Zenoah, 1 piece

New adjustable 2-jaw clutch.  - High-quality workmanship  - Pads are individually replaceable  - Individually adjustable to the conditions.  For FG, Carson, Losi models and HPI Baja 5B, except FG F1 and EVO2020.  1 piece

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4419 FG adjustable 3-shoe clutch for Evo 2020
4419 FG adjustable 3-shoe clutch for Evo 2020

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Gas-nitrited tuning clutch bell for all cars to choose
Gas-nitrited tuning clutch bell for all cars to choose
For Model: y0723 - for FG, Smartech, Carson, Harm, RS5 und Co

Different versions to choose:y0723 Gas-nitrited tuning clutch bell for FG, Smartech / Carson, Harm, RS5 & Co..Gas-nitrited tuning clutch bell; machined from high grade steel with vents for cooling of the clutch system and holes for easy clutch adjustment. The clutch bell features a significantly reinforced wearing surface which guarantees dimensional stability even under high loads!For best mounting of the pinion the clutch bell shaft has to flats with a 90° offset. As an additional safety device a M5 bolt with washer (included) replaces the E-clip found on stock clutch bells.Suitable for many 1/5 and 1/6 cars, such as all FG (except Formula 1), Carson a.s.o.y0726 Gas-nitrited tuning clutch bell for Losi 5ive-T (unfortunately not available at the moment Alternatively original Losi clutch bell # LOSB5038) )  Gas-nitrited tuning clutch bell machined from high grade steel with a hole for easy clutch adjustment. Special vents remove dirt and clutch lining debris automatically, preventing it from accumulating in the clutch bell and causing premature wear to clutch bell and linings. They aid in cooling of the clutch bell as well.The clutch bell features a significantly reinforced wearing surface and face which guarantees dimensional stability even under high loads! The shaft is a tiny bit longer than stock (about 0.2 mm) to prevent the bearings from binding.Since this clutch bell is single-piece machined from bar stock there is no weld bead on the inside of the face plate. The gained space allows now to use the adjustable GPM Big Scale-Cross clutch.Suitable for genuine slot drive Losi pinions. Comes with bolts and spring washers included.y0726/01 Gas-nitrited tuning clutch bell for Losi DBXLGas-nitrited tuning clutch bell with black oxide coating, machined from high grade. Special vents remove dirt and clutch lining debris automatically, preventing it from accumulating in the clutch bell and causing premature wear to clutch bell and linings. They aid in cooling of the clutch bell as well. This clutch bell is dimensionally identical to the stock part. Heat treatment and the use of a high grade material guarantee long service life.Due to a special heat treatment the clutch bell surface is shaded; this does not effect the function, but ensures great durability.y0729 Gas-nitrited tuning clutch bell for HPI Baja models, 1 pce.Gas-nitrited tuning clutch bell machined from high grade steel with a hole for easy clutch adjustment. Special vents remove dirt and clutch lining debris automatically, preventing it from accumulating in the clutch bell and causing premature wear to clutch bell and linings. They aid in cooling of the clutch bell as well.The clutch bell features a significantly reinforced wearing surface whichguarantees dimensional stability even under high loads!Since this clutch bell is single-piece machined from bar stock there is no weld bead on the inside of the face plate. The gained space allows now to use the adjustable GPM Big Scale-Cross clutch.Suitable for slot drive HPI Baja pinions, both stock using a 4mm bolt and aftermarket ones for 5mm bolts. Comes with M4 and M5 bolts included.

Regular price: €49.90
y0733/061 Clutch spring green, 1.4 mm, 3 pcs.
y0733/061 Clutch spring green, 1.4 mm, 3 pcs.

Clutch spring green, 1.4 mm, optional part for BigScale Extreme clutch.

Regular price: €9.90
y1419 Sintered steel clutch for Zenoah and many other engines from 23 cm³ to 32 cm³, incl. clutch spring
y1419 Sintered steel clutch for Zenoah and many other engines from 23 cm³ to 32 cm³, incl. clutch spring

Sintered steel clutch for Zenoah and many other rc-car engines from 23 cm³ to 32 cm³. incl. clutch spring!Note: The sintered steel clutch needs a break in period of at least half an hour run time after their first installation. Only then the clutch surface reaches the desired grip and provides the necessary friction. After that the clutch will show consistent operation and extremely low wear!With 80 grams the weight of the clutch is about the same as the usual OEM clutches.As with all non-adjustable clutches a periodic monitoring of the clutch spring is recommended. By changing the spring, it is also possible to match your car to the track conditions, i.e.: the harder the spring, the higher the stall speed of the clutch.If not on hand, for installation of the sintered steel clutch a clutch spring, the Zenoah screw set # 7318 and the original Zenoah clutch mount # 7315 are required!

Regular price: €29.90
y0743 Clutch-Safe 10 g, adhesive especially for clutch pads
y0743 Clutch-Safe 10 g, adhesive especially for clutch pads

Special single component epoxy adhesive for bonding clutch shoes; suitable for extreme operating temperatures (up to 200°C!) Important note for processing: For the final cure of the bond Clutch-Safe must be tempered at 170°C for 1 hour! (1 hour at 170°C in the oven!) The extremely high temperature load on the clutch shoes when used in off-road cars caused by increased clutch slippage, the shock of jumps and the combination with sometimes very high vehicle weights (up to 18 kg!) make bonding with Clutch-Safe highly recommended. For later removal/replacement of worn out clutch pads the clutch shoes must be heated as well.Attention:Clutch-Safe adhesive must be stored in the fridge! Content: 10g tube

Content: 10 Gramm (€495.00 / 1000 Gramm)

Regular price: €4.95
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