TOST 3.5" MAX II Tail Wheel
TOST 3.5" Tail Wheel
TOST 3.5" Max and Max II Tail Wheel
General Description
TOST 3.5" Max and Max II Tail Wheel - The tire size 200X50 is one of the well-established sizes for tail wheels (LR) of gliders and motor gliders. Max wheels are available in either 12mm or 20mm axle diameter. Max II split hub (center in photo above) is anodized in blue, special order colors are available: Red, Black or Silver.
Max Tail Wheel is a one part die cast wheel hub.
Max II Tail Wheel is a two part wheel hub. The Max II combines easy tire mounting with the lowest possible weight. Thanks to its anodized surface, the Max II wheel hub shows a maximum of corrosion protection.
Max II Tail Wheel Brass is also available and can thus help you to compensate too top-heavy moments without performing changes at the aircraft.
Always use TOST Tubes with TOST wheels.
See "Tech Data" tab for Description and Technical Data.
See "Docs" tab for "TOST Tire, Tube & Wheel Selection Guide".
TOST 3.5" Max (One Part) Tail Wheel uses a 200X50 Tire and Tube 90°30°28G (SKU 4721).
TOST 3.5" Max II (Two Part) tail Wheel uses a 200X50 Tire and Tube 90°90°28G SKU (4724) or a Foam Filled Tire.
TOST 3.5″ Tail Wheel price varies depending on selection. Use above dropdown box for selection and final price.
P/N SKU |
Desc | Install Width mm | Bearing ∅ mm | Tire Size |
Mass g W/O Tire |
Type of Hub |
033100 5996 |
3.5″ LR Max |
50 | 20 | 200X50 | 430 | One Part |
A33006 5995 |
3.5″ LR Max With Tire and Tube |
50 | 20 | 200X50 | 430 | One Part |
033112 5999 |
3.5″ LR Max II |
50 | 12 | 200X50 | 375 | Two Part |
033912 5995B |
3.5″ LR Max II With Tire and Tube |
50 | 12 | 200X50 | 375 | Two Part |
033812 6000 |
3.5″ LR Max II With Foam Filled Tire |
50 | 12 | 200X50 | 375 | Two Part |
033120 6002 |
3.5″ LR Max II |
50 | 20 | 200X50 | 365 | Two Part |
033920 5995C |
3.5″ LR Max II With Tire and Tube |
50 | 20 | 200X50 | 365 | Two Part |
033820 6003 |
3.5″ LR Max II With Foam Filled Tire |
50 | 20 | 200X50 | 365 | Two Part |
033412 5999A |
3.5″ LR Max II Silver Arcus M/E |
50 | 12 | 200X50 | 375 | Two Part |
033419 6012 |
3.5″ LR Max II Silver Arcus M/E With Tire and Tube |
50 | 12 | 200X50 | 375 | Two Part |
033420 6007 |
3.5″ LR Max II Version Antares |
50 | 20 | 200X50 | 360 | Two Part |
033429 6013 |
3.5″ LR Max II Version Antares With Tire and Tube |
50 | 20 | 200X50 | 360 | Two Part |
033502 6008 |
3.5″ LR Max II Brass |
50 | 12 | 200X50 | 2105 | Two Part |
033519 6009 |
3.5″ LR Max II Brass With Tire and Tube |
50 | 12 | 200X50 | 2105 | Two Part |
033501 6005 |
3.5″ LR Max II Brass |
50 | 20 | 200X50 | 2080 | Two Part |
033529 6010 |
3.5″ LR Max II Brass With Tire and Tube |
50 | 20 | 200X50 | 2080 | Two Part |
033542 4909 |
3.5" LR Max II Arcus | 50 | 12 | 200X50 | 2105 | Two Part |
Notes to aircraft tires
Tire exchange
Removal:
- Jack up aircraft at specified point.
- Deflate tire completely before removing wheel unit.
- Do not unscrew the valve insert until the tire pressure has dropped to 0.2 bar.
- Remove wheel from axle.
- Loosen wheel bead from the hub shoulder with a rubber or plastic hammer.
- Undo wheel bolts (with 5 mm hexagon key), remove bolts and washers, split hub halves.
Mounting:
- Tires and wheel hubs must be clean and dry.
- Do not apply excessive force when replacing a wheel.
- Apply adhesive agent (or talcum powder) to the hub shoulder.
- Remove dirt, sand, labels, etc. from the tire. Apply a moderate amount of talcum powder to reduce friction between tube and tire.
Caution: Too much talcum has the opposite effect. - Fill air into tube (placed in the tire) until it is evenly round. Remove nut and washer from valve.
- Place tire (red mark at valve hole) and tube on the wheel half with the valve hole, push valve through valve hole
- Push other wheel half onto tire, match bolt holes with centering shaft.
- Insert wheel bolts, washers and any nuts, and tighten to the correct torque (M6: 9 to 10 Nm). Tighten bolts diagonally.
- Place a tire in a safety cage when inflating it to mounting pressure for the first time. If you do not have a safety cage, take great care when inflating the tire. Inflate the tire to mounting pressure. The mounting pressure is 10% more than the specified operating pressure. Check carefully for leaks. Leave to adjust at this pressure for 12 to 24 hours. Once the tire shows no leaks and is at operating pressure, the wheel unit can be mounted on the aircraft.
- Make sure that the wheel unit is mounted perfectly balanced to avoid vibration and excessive wear.
Red Dot:
Larger aircraft tires are marked with a red dot. This is an indication of the lightest spot of the tire. The valve must be placed at this point to eliminate or minimize a balance/vibration problem of the tire.
WARNING:
An inflated tire is a potentially explosive device – treat it with the correct equipment and precautions!
Notes on inner tubes
Aircraft tubes are made from natural rubber, and they are slightly underdimensioned so that it is easier to install them in a new tire. The layers of an aircraft tire are made of nylon – they therefore tend to become larger with use.
The inner tube also increases in size, adapting to the larger inside diameter of the tire. If a tube enlarged in this way is later fitted in a new tire, it can happen that it is too big for the inside of the tire, with the result that the tube may crease.
These creases may rub through during operation, causing the tube to lose pressure. Rubbing through slowly results in slow pressure loss – the pilot is thus warned before a dangerous situation arises. If the tube tears during a start, the pilot will fail
to notice that he is flying with a flat tire.
Taking into consideration all the risks involved with fitting an old tube into a new tire, it is advisable always to fit new inner tubes in new tires.
Tire maintenance instructions
- Maintain stipulated air pressure, check at regular intervals! Underpressure results in reduced load capacity and shortens service life.
- Inspect tires at regular intervals for damages, shredding, flat areas and foreign objects.
- Wheel units must be mounted perfectly balanced. Wheel imbalance can result in a damage to bearings and brake drums.
- Keep tires free of oil, grease, brake fluid and tar. Clean tires with rag soaked with petrol, then wash off with soap and water.
Characteristics Max II
- Two–part wheel hub, CNC–manufactured out of whole pieces
- Made from aluminum or brass
- Threefold screwed
- Maintenance free, sealed ball bearings
- For axle diameter 12 mm or 20 mm
- Spacer between bearings for axial bracing on axles or stub shafts
- Aluminum surface anodized in blue (other colors on request)
TOST 3.5" Max and Max II Tail Wheel is sold as pictured. Tire and Tube sold separately.
W&W typically stocks the Max and Max II Tail Wheels highlighted in yellow in the "Tech Data" table. Other P/N's or colors please allow approximately 4 weeks for delivery.