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Tech stuff: A four-stroke engine's cylinder fires only once every two revolutions. A two-stroke's cylinder fires every revolution, so a 2-stroke has (all things being equal) double the output for the same cylinder size. Problem is that 2-stroke petrol engines don't scale up in size well (though some industrial Diesels *are* 2-stroke). The rotary fires (like the 2-stroke) once for each revolution, so it has potentially twice the output for the same volume as a 4-stroke, plus the rotary *does* scale up OK. Piston engines absorb energy during the compression cycle, giving a negative torque, but rotaries provide positive torque for each entire revolution, since compression, power and exhaust occur simultaneously. Rotaries can run to very high rpms compared to piston engines because their motion is continuous rather than reciprocating and because the few rotating parts are small-ish and can be made very robust, while piston engines are limited to lower and lower rpms as they scale up. Rotaries are thirsty if you cane them, but I get 30 mpg touring at 70 mph in my 1985 Series 3, no mods. Fuel consumption is an issue - it's to do with the combustion space being a long, thin rectangle, rather than the more ideal cylindrical space of a piston engine. And having a turbo giving over 270 shaft HP from a 1.3 litre engine has got to be a temptation.... But no, NOTHING else in the car park looks as damn sexy!

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The Urban Dictionary Mug

Ceramic mug (11 oz)
Printed on-demand just for you
Dishwasher safe
Microwave safe
Word on front, definition on back
Comfortable handle
Every order personally reviewed
636
62
10
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15

What a sexy ass mug ヾ(*’O’*)/

Reginald L.May 26

My daughter is a Seinfeld afficianato. She was pleasantly surprised when she opened the package with her Penske File mug. It has the definition of Penske File from the Urban dictionary. Totally worth the price!

Kathryn S.May 26
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gay mug very spicy

gay b.May 25

The Urban Dictionary is a unique place to find anecdotal memories on all sorts of stuff. Their ongoing communication once your order is placed is excellent. I have put in a significant number of orders recently, and the communication regarding my order status is excellent. I have had one order misplaced in transit. They have contacted me to say that they will get back to me, but to this point, they have not. So, that's a bit of a caveat in my rating. Overall, I would rate their products and customer service as good. I would not hesitate to deal with them in the future. Fill Your Boots with Whatever You Want to Order. Nice job, "Urban Dictionary."

Stephen N.May 24
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Thank you for sharing this Unique piece of Artwork. You are the only one that offered this. Thank you for the quality service you have provided not only in what you offer but right on to the quality packaging as well. Thanks again - Peggy Hall

Peggy H.May 22
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My brother Tom became an uncle & urban dictionary created a wonderful uncle Tom mug…

David J.May 22
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It is special to have a mug that has to do with my dad who invented a word when we were growing up. He passed away last year. Drinking from this mug is like spending time with him.

Marlene M.May 22
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Review by Daniel B.

Quick turnaround time and good quality merchandise.

Daniel B.May 19
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very cool kanye for me gave it to my crush and now were dating so yea

tommyMay 19

I bought a Prone mug and i love it its so good imma prone to the bathroom now brb

potato p.May 17

This mug gives my life purpose. It's what I've always said. Patience is a virtue and hard work never betrays. Ever since I was born I've been struck with one misfortune after another, but today it all paid off. I got my own mug, and I use it anywhere and whenever I can! Both of my legs are shattered because to my wife threw me in the middle of traffic and my windpipe is messed up due to me screaming all the way from the crash site to the hospital thanks to the unbearable pain I was feeling. Although even with all that's happened this is still the best day of my life. I suppose the only problem I have is that whenever I happen to look at my cup I get a little too happy. That causes problems because my life support can't handle my exhilaration, haha! I'm just kidding; that was just a little lighthearted joke of mine. I actually cannot afford life support because I spent all of my life savings on this fine piece of pottery. Not to worry though! I can get through the pain with my will and drugs - I mean medication. P.S. There are definitely no ghosts in the mugs. Just wanted to point that out in case someone was worried about that.

Joel K.May 17

I bought two mugs as gifts for coworkers and they were very pleased. The print was clear and concise. Hopefully they last a long time.

Peter A.May 17
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Ordered a gift for a friend I hope he likes it :)

John G.May 16
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Mug was well-packed when received. Shipping was timely. The mug was as advertised. Very nice.

Pat P.May 16
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BEST THING EVER. CUZ YK WHAT!!?!? IT. IS. A. MUG. WITH MY NAME. AND. A COOL DESCRIPTION. ON. IT. I LOVE IT.

GETRC45CG4T X.May 16

Just what I expected! Thank you!

H P.May 16
✓ Verified Purchase

I bought this friggin thing thinking my whole life would change. Guess what? It still sucks! If this friggin thing can't change my life then I don't want it!

Lesko B.May 15

This is a great gift to give after our Urban Dictionary inclusion

Manley P.May 14
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Review by Chanda J.

It's perfect!! Thank you!

Chanda J.May 13
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My Name is Walter Hardwell White, My Mug was sent to 308 Negra Aroyal Lane, AQ, New Mexico and arrived on-time and I am very satisfied. My "Glock Dookie" mug is great for my lab work, and my friend Pinkman loves it!

Walter W.May 12

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