Awesome eengineering

[Laverdaroo]

saw this today, really interesting unit and the engineering is seriously  exotic. Worth a watch.


 https://www.youtube.com/watch?v=sXOffbLH_I0

[K2-K6]

Watched that through, you're right Roo, such a calm matter of fact approach to building that.

Just a huge understanding of engineering principles and getting stuck in to carrying out such a project.

I want to hear it run, by the looks of things they're going to build it and fit with a more capable injection/ignition system to assess it fully.

[Laverda Dave]

Great video, awesome engineering. A great shame the rotary engine is so heavy on fuel and and suffers high wear rate on the tip seals.  They do however sound absolutely incredible. I will never forget the sound of the rotary Norton at the TT and being able to hear the noise a long, long time before you could see them!

[McCabe-Thiele (Ted)]

When I was in the motor trade back in the early 1970's I used to sell the new NSU RO80 - the later two plug engines fitted with the catalytic converter were much better plus they had the built in rev limiter to stop the rotor tips wearing out too fast - both were twin rotor design early ones had 4 plugs.

They were suited to folk who used them on motorways regularly - they were rated for VEL duty as 2 litre but in reality they were iirc nearer 490 cc each. We had a customer who covered close to 80k miles a year commuting between Birmingham, London & Blackpool - he was a great fan having owned both versions. 20 mpg was pretty much average as they wanted to be driven.

If just used for short commuting they would stall at idle during a journey then refuse to start for a couple of hours due to wet plug fouling.

[K2-K6]

Prompt for one of my favourite yt clips https://youtu.be/QtUEPwHnxmU this one a 4 rotor and first Japanese car to win Le Mans 24hr.

[Laverda Dave]

Oh WOW . Fantastic sound, had to turn the speaker up to 11/10 for that one .
I think it is only just beaten by the Vulcan howl.

[Laverda Dave]

This one..........
https://youtu.be/ydfddlcebSo
(put your earplugs in  )

[K2-K6]

A fine plane Dave. They used to have the one used to test the Olympus concorde engine in single nacelle under fuselage at Farnborough for a long time.

I look at that Concorde displayed at Brookland and it still appears futuristic too. Even has carbon /carbon brake packs on it from that era! The aero surfaces are amazing too, and derivative of Vulcan in their origin.

[Laverdaroo]

https://www.youtube.com/watch?v=NmwIdGUb3qY


Thats it running Nige, sounds ace.

Like yuo say,ver y matter of fact at problemsolving and getting over issues.Not only is it an engineering masterpeice, it looks absolutely awesome with it!


Enjoy

[Laverdaroo]

No its not!

This is one of it running!..........Doh!

https://www.youtube.com/watch?v=Qcgg7w6TFQc&t=10s

[Laverda Dave]

A very unique sound. What are they going to do with an engine that size, got to go into a boat?

[Laverdaroo]

I reckon so or some silly yank tank pick up something. Awesome platform though as I suppose you could have it as big as you can fit in the hole you’ve got to fill. Bit like a cartridge engine, you can just bob another set in or take one out. The tuning element is interesting re the advance retard mech. Super clever.


Sent from my iPhone using Tapatalk

[Matt_Harrington]

When I was in the motor trade back in the early 1970's I used to sell the new NSU RO80 - the later two plug engines fitted with the catalytic converter were much better plus they had the built in rev limiter to stop the rotor tips wearing out too fast - both were twin rotor design early ones had 4 plugs.

They were suited to folk who used them on motorways regularly - they were rated for VEL duty as 2 litre but in reality they were iirc nearer 490 cc each. We had a customer who covered close to 80k miles a year commuting between Birmingham, London & Blackpool - he was a great fan having owned both versions. 20 mpg was pretty much average as they wanted to be driven.

If just used for short commuting they would stall at idle during a journey then refuse to start for a couple of hours due to wet plug fouling.

Hailing from Blackpool (well someone has to!) My mates dad had an RO80 and I thought it a fantastic engine (and the semi auto clutch)....

[McCabe-Thiele (Ted)]

They were well ahead of their time. A favourite trick used to be driving on an empty section of dual carriageway A38 at 70 mph then do a heads free emergency type stop down to 20 mph. They pulled up dead straight due to the steering geometry we called it inboard scrub radius.iirc.

[K2-K6]

I reckon so or some silly yank tank pick up something. Awesome platform though as I suppose you could have it as big as you can fit in the hole you’ve got to fill. Bit like a cartridge engine, you can just bob another set in or take one out. The tuning element is interesting re the advance retard mech. Super clever.


Sent from my iPhone using Tapatalk

Yep, the builder said to be same size as big block V8 to fit existing space in boat inboard location.  He built it to be more reliable than the Chevy at continuous running high output with less maintenance for valve springs etc.
Quoted 800 ft/lbs torque at 2000 rpm  that'd turn a fair size prop with not even much rotor speed being used.