Graupner OS Max NSU Rotary "Skeleton See Through" Wankel Engine First Model 1800 Vintage!

 

One engineering marvel designed in Germany & beautifully made by OS Engines in Japan!

 

An awesome NSU Wankel, the first Graupner OS version (Best Nr. 1800).  Unlike conventional piston engines that use piston rings, this NSU Wankel Rotary engine uses Apex rotor seals. The internal workings of the Wankel can be observed in this Wankel engine.  Please see photos.

 

Tech Specs (from Graupner & Peter Chinn*):

Capacity: 4.9cc

Weight: 310g (+25g for cooling ring)

Length: 64mm

Diameter, with cooling ring: 70mm

Max power: ~0.67hp at 16,000rpm (with silencer fitted)

Max torque: ~52 oz in at 8,500rpm

Recommended props: Graupner Super Nylon 9x5, 9x6, 9.5x5, 10x4"

*Engine Test, Aeromodeller, December 1972 (Fuel used 5% nitro, 70% methanol, 25% Duckhams Racing Castor Oil)

 

This Wankel is on display as an Objet d‘Art.  The original parts are included (last photo) to convert this engine back into running condition in a matter of minutes.  This Wankel could then be fired-up on special occasions with friends & used to power a RC model airplane.

 

Condition wise, this Wankel is in excellent condition.  The patina & burnish reflect its age. Please see photos.  This Wankel engine comes with the optional finned cooling ring.  The "skeleton" see through parts & display stand are included for free for the winning bidder.

 

International bidders are welcome!  Shipping world-wide at cost with tracking number. I combine shipping to save on total postage costs

 

The Graupner OS NSU Rotary "Skeleton" Wankel 1800; perfect for the RC flyer & for display!

 

Don't forget to check out my other items on the eBay UK site for Stirling Super-charged radial, Graupner OS model 1801 & OS 49 PI Type 2, Saito FA-90 R3 radial, G-Mark 5 radial, Enya 35-4C & Enya 40-4C open rocker, Saito FA-30 Mk1 open rocker, OS Max FS-60 Mk 2 & other fine vintage engines...

 

Happy bidding & good luck!

 


About the new "ebay payments" interface just introduced by ebay & its effect on dispatch time
We all got used to ebay purchases with PayPal payments, that cleared immediately, resulting in fast dispatch.  Ebay have now introduced "ebay payments".  Ebay are saying "The payout will generally be initiated within 2 business days from the order confirmation. Once initiated it typically takes up to 4 business days for the funds to clear in your account and become available to you".  The onus is on the seller to keep checking when payment has cleared.  Thusly, this new "ebay payments" interface could add up to 6 working days to dispatch time compared to the aforementioned PayPal payments.  I imagine somebody will get a bonus for this.  This new payments thingy forced upon us (you can't opt-out of it) has therefore added 5 working days to my dispatch time.  Please bear this in mind before placing your bid.


Please note the item is for sale by a private individual & in accordance with section 2.18 of the DTI (Department of Trade & Industry) OFT (Office of Fair Trading) Distance Selling Guide Sept 2006, the guidance for UK implementation of the EU consumer DSR (Distance Selling Regulations), so this item is NOT subject to return nor refund. By placing a bid on this item you fully understand (1) no return of item, (2) no refund for said item & (3) stated postage & packing charges.  Most hobbyists understand that even some manufacturers in this hobby do not accept warranty claims due to "the nature of the hobby" & set their expectations accordingly