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kadora

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Hello all
3 days ago I saw in one private collection these beauties.
They are brand new never used. First is newer version and second is old version
I am surprised how good compression these wankels have.
Kadora

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Wankel engine is difficult to hand start due the rotor is slower to create enough compression. Use electric starter or robe to start up the wankel engine as i did here in my movie: [ame]http://youtu.be/Gu8RLwWiYiQ[/ame]
 
I witnessed the tail end of 18 months test of huge 4 cylinder Wankel Engine at Painted Post Plant. All went well.
But did not last very long when operating on offshore production platforms in Thailand. The seals did not last. Seal replacement had to be done right and run-in.We had the best engineers working on it.

Mazda was building cars with Rotary Engines too in the 70s and was a total failure.Mazda nearly went broke.

Maybe in the not so distant future some new technology will make rotary engines last longer. Looks like the cylindrical pistons and piston rings remain the champ.
 
Mazda was building cars with Rotary Engines too in the 70s and was a total failure.Mazda nearly went broke.
It was NSU that failed. However, the NSU name can still be found on the Mazda engines as NSU still owns the rights to the design, even though Mazda did all the hard work and solved all the problems.
It was the R&D that nearly sent Mazda broke.
All Wankel engine manufacturers are licensed to NSU, this includes Mazda, Suzuki, Aixro(competition carting engine) and even Graupner/O.S.

Mazda started producing the engines commercially in the 60's and they were still in production up until the RX8 was discontinued in 2011. That is almost half a century of continuous production.
The Cosmo was Mazda's first production vehicle to have a Wankel and was released in 1967.

The amount of misinformation and misunderstandings about the Wankel engines staggers belief and more often than not seems to be "a friend of a friend had a 2nd cousin who's wife's uncle drove one once and said blah blah blah blah"
Many of my friends, myself included, are rotary nuts. I have seen and driven many Mazda's that have done hundreds of thousands of kilometers and they still run fine, a bit tired maybe but so are 'conventional' engines at that age.
One of my friends has a street-legal RX3 drag car that does high 8's and he drives it to work.

Autoblog.com said:
On November 16, 2011, Mazda CEO, Takashi Yamanouchi, announced that the company is still committed to producing the rotary engine, saying, "So long as I remain involved with this company... there will be a rotary engine offering or multiple offerings in the lineup."
 
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I got to drive a rotary-engine Mazda once. It was amazing. Responsive, free-revving, fast. As I started down the entrance ramp to the highway I glanced at the speedometer and discovered I was already doing 70. I think I may have been only in 2nd gear. I don't know how they stood up in use, but new they were great.
 
Out of my knowledge to keep model wankel engine in good condition: Never lean out the engine, use 20-25% castoroil to keep engine less hot and preventing short life of apex seal at the rotor. The engine is very hot compared with the reciprocating engines. Nitromethane in the fuel not more than 5-10%. The wankel engine is not economical in fuel consumption. The glowplug "R" is not in production if you has a older wankel engine in case the filament is broken or bursted. The new and last OS 49-PI Type II .30 wankel Engine has 4 stroke glowplug "F" and the engine is recommented to run with syntetic oil and, i will recommend castor oil instead syntetic oil to be sure the apex seal at the rotor will last better and keep engine a bit cooled by oil. If you are running the engine hot in long time, it can weaken the spring under the apex seal and worst of all it will build up carbon in apex seal then compression will be lost.
 

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