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PostPosted: Sat May 03, 2014 2:22 pm 
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Moto GP
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Joined: Mon Dec 13, 2010 4:32 pm
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Location: southwestern Pennsylvania
Country: USA
Bikes owned: 69 T350 thru 75 GT750
Combines a two stroke motor & generator into one unit.
Currently an R&D development project.
Interesting bit of out-of-the-box thinking.
Image

http://www.f1technical.net/forum/viewtopic.php?p=509015&f=11
http://www.foxnews.com/leisure/2014/05/02/toyota-developing-free-piston-engine-linear-generator-for-hybrid-cars/

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BAS (Bike Acquisition Syndrome) - too many bikes but have room for more

Suzuki:
GT750 2x75
GT550 72 project & 75
GT380 72
T500 73 project
T350 69, 71 & 72 project
T250 72
Honda 85 CB650SC & 86 CB700SC
Yamaha 75 XS650
09 Triumph Bonneville SE


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PostPosted: Sat May 03, 2014 4:02 pm 
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AMA Superbike
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Joined: Thu Feb 16, 2012 11:50 am
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Location: The Republic of South Yorkshire
Country: England
Bikes owned: GT550s GT750 GSX1400 and lots of spares
Interesting thinking, but complicated.
Whatever happened to simplicity?


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PostPosted: Mon Oct 09, 2017 12:26 am 
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Still in the Driveway

Joined: Thu Sep 07, 2017 9:27 pm
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Country: usa
Bikes owned: none
That’s very interesting post about Toyota two stroke motor for hybrid/electric cars. I liked reading through this. Well, nowadays ECs are getting quite popular because they have various advantages. I also just finished reading Electric car buyers guide and got to know a lot of new things about them.


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PostPosted: Mon Oct 09, 2017 3:32 am 
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Moto GP
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Joined: Mon Dec 13, 2010 4:32 pm
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Location: southwestern Pennsylvania
Country: USA
Bikes owned: 69 T350 thru 75 GT750
Cummins is developing a new two stroke diesel for the military. It uses opposing pistons and doesn’t have a head. “Cummins says it is targeting a 21 percent reduction in thermal rejection, along with a 50 percent increase in power density and a 13 percent jump in fuel efficiency compared to engines currently in use.”
Image

http://www.foxnews.com/auto/2017/10/04/cummins-developing-revolutionary-new-diesel-engine-for-u-s-army.html

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BAS (Bike Acquisition Syndrome) - too many bikes but have room for more

Suzuki:
GT750 2x75
GT550 72 project & 75
GT380 72
T500 73 project
T350 69, 71 & 72 project
T250 72
Honda 85 CB650SC & 86 CB700SC
Yamaha 75 XS650
09 Triumph Bonneville SE


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PostPosted: Mon Oct 09, 2017 7:46 am 
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To the on ramp

Joined: Wed Jul 10, 2013 12:04 pm
Posts: 432
Country: England, UK
Bikes owned: FZ50, GP100, RG125 Gamma, GT380, Bandit 1200S
jabcb wrote:
Cummins is developing a new two stroke diesel for the military. It uses opposing pistons and doesn’t have a head. “Cummins says it is targeting a 21 percent reduction in thermal rejection, along with a 50 percent increase in power density and a 13 percent jump in fuel efficiency compared to engines currently in use.”
http://www.foxnews.com/auto/2017/10/04/cummins-developing-revolutionary-new-diesel-engine-for-u-s-army.html

Nothing new there. Its been done before. In the UK they had diesel engine trains that used a similar concept in what is called a deltic engine. They ran for many years, but so far as I am aware are no longer in general public use on the railways anymore.
https://en.wikipedia.org/wiki/Napier_Deltic
https://en.wikipedia.org/wiki/Napier_Deltic#/media/File:Napier_Deltic_Engine.jpg
it is annoyingly impossible to embed images from wikipedia, apparently.
I like the idea of the 2-stroke hybrid motor without a crankshaft though. Very interesting, without being overly complex in comparison to many modern motors.


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PostPosted: Mon Oct 09, 2017 10:18 am 
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Moto GP
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Joined: Mon Dec 13, 2010 4:32 pm
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Location: southwestern Pennsylvania
Country: USA
Bikes owned: 69 T350 thru 75 GT750
Interesting.
Image
Image

Right click on the image & then open it up in a new window. Then use the new window’s URL.

_________________
BAS (Bike Acquisition Syndrome) - too many bikes but have room for more

Suzuki:
GT750 2x75
GT550 72 project & 75
GT380 72
T500 73 project
T350 69, 71 & 72 project
T250 72
Honda 85 CB650SC & 86 CB700SC
Yamaha 75 XS650
09 Triumph Bonneville SE


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PostPosted: Fri Oct 13, 2017 3:40 pm 
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To the on ramp

Joined: Wed Jul 10, 2013 12:04 pm
Posts: 432
Country: England, UK
Bikes owned: FZ50, GP100, RG125 Gamma, GT380, Bandit 1200S
ah thank you.
Pretty cool engine huh? I was in awe when i first saw it at the museum in York. I think I spent over half an hour just looking at the engine and trying to get my head around how it all works, then I came back later for another look. I spent more time with it than I did with any of the trains. Lol. Although, I spent almost as long with the Mallard. OMG what a beautiful train. I wish I was old enough to have been around when it was possible to ride in one.
Interestingly, the deltic engine didn't actually power the wheels, it powered the generator that supplied electricity to the electric motors that actually moved the train.
Oh bugger, I've got lost in a train of thought and hijacked another thread again.


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PostPosted: Fri Oct 13, 2017 4:05 pm 
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Moto GP
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Joined: Mon Dec 13, 2010 4:32 pm
Posts: 2952
Location: southwestern Pennsylvania
Country: USA
Bikes owned: 69 T350 thru 75 GT750
sportston wrote:
...
Interestingly, the deltic engine didn't actually power the wheels, it powered the generator that supplied electricity to the electric motors that actually moved the train.
...

That’s how diesel electric locomotives work. There is no clutch to burn up & you get 100% of the torque at 0 rpm.

_________________
BAS (Bike Acquisition Syndrome) - too many bikes but have room for more

Suzuki:
GT750 2x75
GT550 72 project & 75
GT380 72
T500 73 project
T350 69, 71 & 72 project
T250 72
Honda 85 CB650SC & 86 CB700SC
Yamaha 75 XS650
09 Triumph Bonneville SE


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 Profile  
 
PostPosted: Sat Oct 14, 2017 11:40 am 
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To the on ramp

Joined: Wed Jul 10, 2013 12:04 pm
Posts: 432
Country: England, UK
Bikes owned: FZ50, GP100, RG125 Gamma, GT380, Bandit 1200S
Yes I know that now. Didn't know that until I went to the museum


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