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260 x 85 Tost Tube
260 x 85 Tost Tube 260 x 85 Tost Tube

260X85 TOST Tube

Sale Price: $20.47

SKU: 4739

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Detailed Description

TOST 260X85 Tube

General Description

TOST has a great selection of aircraft tires from 3″ to 10″ available from stock.

Being an authorized Michelin Distributor TOST can supply all Michelin brands: Condor, Michelin Aviator and Michelin AIR.

For more than 30 years now TOST has manufactured aircraft tires exclusively under the brand TOST–AERO in the dimensions: 200x50, 260x85, 4.00–4 and 336x115–5. Characteristics are: long lifetime, very robust, for high load and speed.

INNER TUBE TOST 260 x 85/3.00 – 4 bent 90° 32G valve standard length 32 mm. This inner tube fits all previous applications of the AirFix inner tube but has a slightly shorter 30mm TR87 90° valve stem (see image) and may require use of a valve extension for filling purposes.

History of TOST

TOST has more than 60 years of experience in the development and manufacturing of aviation safety equipment. It's a family business – run in the fourth generation – they stick to the motto: Conserving the well-proven system – Developing forward.
The cornerstones of their corporate policy are:
Service
Customer satisfaction is their highest goal. The customer is the king – he should like to come back – and not like to send the product back.
Quality
Since 1969 TOST holds a LBA approval as Design and Production Organization. (LBA= German Aviation Authorities). In the meantime, all approvals are issued by the EASA. In yearly audits through the aviation authorities, the compliance with quality standards is checked and kept record of. Over and above those official regulations, they live the quality thought in their every-day work.
Sustainability
Modern manufacturing techniques, economical resource management and the long lifetime of TOST products are their contribution to the protection of the environment. Gliding is an ecologically friendly sport.
Continuity
Long standing relations to their customers, suppliers and employees stand for the continuity in their company.

TOST 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 loose 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.



P/N
W&W SKU
Size Valve Mass g Remarks
064292
4739
260x85
(3.00–4)
90° 32G 160 Valve length 32 mm

Choose the right tire for your sailplane by referencing to our
Tire & Wheel Selection Guide
.

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.

TOST Notes on 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!

*

Why Buy From Us?

Wings & Wheels has been serving the sport aviation and soaring community for more than 20 years.  We have the largest and most comprehensive inventory of sailplane and soaring supplies.  Nearly everything you find here is in stock and can ship the same day.  We are here for aviators, businesses, mechanics and government.  Our goal is to fulfill your order promptly and as conveniently as our resources allow.

Wings & Wheels is proud to be the American representative for HpH Ltd, producer of the finest quality 304 sailplanes.

Our staff has over 8,000 hours of flying experience in gliders and airplanes. Wings & Wheels is staffed by Sean, Garret, Miki, Matt and Linda. You will have a friendly voice pick up when you call. Our staff is trained to promptly take your orders and ship your products.

Shipping Information

Same Day Shipping

Orders placed by 3:00 pm PST Monday-Friday for “off-the-shelf“, in-stock items are normally shipped same day by UPS.  Although we stock the vast majority of the items on our online store, we cannot assure that they will all be on hand at all times. We ship every order as quickly as possible, and in the event of a delay, be assured that we are working hard to get your order shipped promptly. Due to order volume during holidays, we cannot guarantee that all orders placed can ship on the day after the holiday closure. 

Orders for special cut products may take a few days to ship depending on order volume. Special order products ship based on the lead times of each manufacturer. 

Shipping Service

UPS LogoUPS Shipping

UPS orders will need to be placed before 4:00 pm EST and 4:00 pm PST Monday-Friday to ship out the same business day.  We apply UPS retail rates to calculate shipping costs.  Packages may not qualify for actual wieight due to size.  If dimensional weight is applied by UPS your shipping & packing rate will be adjusted.  Packages are only insured aganst theft if signature delivery is accepted.  Request signature delivery.

USPS LogoUSPS

Priority Mail & 1st Class order has to be placed by 11am. We will use the flat rate box service if your parts fit in the box and the service cost is less than USPS Priority Mail. USPS may not always have tracking information available.  If you request lower cost USPS shipping you agree to accept all responsibility for lost, stolen and damaged packages.

Delivery Timing

UPS Ground Delivery

USPS Delivery Timing

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