Graupner,Luftschraube25x18 cm,1316.25.18

Shipping time: 1-3 Tage 1-3 Tage
Werktags diesen Artikel bis 14 Uhr bestellt und wir versenden am selben Tag !
Product no.: G1316.25.18
GTIN/EAN: 4013389006385
MPN: 1316.25.18
For further information, please visit the homepage of this product.
2,70 EUR
19 % VAT incl. excl. Shipping costs

Luftschraube25x18 cm Graupner 1316.25.18 SUPER NYLON propellers
Made of glass fibre reinforced nylon.
Highly efficient and tough. In neutral colour. For the selection of propellers approximate
values are indicated for each engine.

When used in conjunction with large and very powerful engines the ultimate load factor of SUPER NYLON propellers may be reached or even exceeded. In cases like these wooden pro-pellers should preferably be used. The rotational speed, that is the velocity of the airscrew tip in the plane of rotation, provides some information on the limiting factor. The rotational speed must not exceed 180 m/sec. Maximum airscrew rpmare then governed by the diameter of the propeller. Max. revolutions can be calculated using the following formula: Constant (includes safe value) 3438: diameter of prop (in meters). Taking a 28 cm diam. propeller the formula reads: 3438.0.28 = 12279 rpm. The actual ultimate load depends on several other factors in addition to rotational speed though, such as engine vibrations and propeller warping as a result of improper installation, to name but a few, which can affect theultimate load factor negatively. Propellers should be mounted perfectly centered on the prop shaft and with a minimum of play. If necessary install a propeller adapter of No. 198. In order to preserve the good physical properties of SUPER NYLON propellers, in particular their strength, their water contents of approx. 2 - 3% must stay trapped in the material. For that reason they should not be stored in dry rooms or near warm heating units. A lack of water contents can be compensated either by putting the propeller in boiling water for a short while or by submerging it in water at ambient temperature for a couple of days. Be sure to abide by the safety guidelines concerning
rotating propellers! Always remain clear of the propeller arc! Do not ever use a damaged propeller!

Ø 25 cm


This product is compatible with:

  • WP TAXI III Graupner 4661
    Graupner,WP TAXI III,4661
    Delivery time: 3-60 Weeks3-60 Weeks
    83,95 EUR
    19 % VAT incl. excl. Shipping costs
  • WP SUPER AIR 2 Graupner 9374
    WP SUPER AIR 2 Graupner 9374
    Delivery time: 3-60 Weeks3-60 Weeks
    your price 98,00 EUR
    19 % VAT incl. excl. Shipping costs
  • WP SKY HERO II Graupner 9384
    Graupner,WP SKY HERO II,9384
    Delivery time: 3-60 Weeks3-60 Weeks
    your price 95,95 EUR
    19 % VAT incl. excl. Shipping costs
  • WP SKY HERO III Graupner 9593
    WP SKY HERO III Graupner 9593
    Delivery time: 3-60 Weeks3-60 Weeks
    your price 93,06 EUR
    19 % VAT incl. excl. Shipping costs
  • WP SKY HERO IIImit Motorset Graupner 9593.MX
    WP SKY HERO IIImit Motorset Graupner 9593.MX
    Delivery time: 3-60 Weeks3-60 Weeks
    your price 292,41 EUR
    19 % VAT incl. excl. Shipping costs
  • OS MAX FS 40 SURPASSincl. Schalldämpfer Graupner 1804
    Graupner,OS MAX FS 40 SURPASS,1804
    Delivery time: 3-60 Weeks3-60 Weeks
    your price 184,13 EUR
    19 % VAT incl. excl. Shipping costs