2017年7月17日星期一

Ratios Galore: A Deep Look at ZF’s 9-speed Automatic

When is enough, enough? When it comes to transmissions, the available ratios from any trans maker are on a steady climb into two-digit territory. Take ZF’s newest for example: the 9HP. It’s a nine-speed transaxle for transverse applications sporting a 9.8 ratio spread (that’s good) and it promises 10-percent better fuel economy when compared to a six-speed slushbox. In a market that goes full frenzy by one-percent here and two-percent there, 10 can’t be ignored.

The trouble with engineering a transmission for a transverse application is packaging. The gearbox, along with the engine, has to fit between the shock towers. According to ZF, which announced it will initially supply the 9HP to the Jeep Cherokee and the Land Rover Range Rover Evoque with more customers to come, the maximum width for such a transmission is about 14.6 inches. It’s no surprise, then, that the 9HP is 14.4 inches wide. With four planetary gear sets and six shifting elements (brakes and clutches) that’s a very dense 14.4 inches.
Of those four planetary gearsets, two of them are nested. In this nested pair, the annulus, or ring gear, of the smaller planetary doubles as the sun gearbox  of the larger set. This arrangement trims some width from the four-gearset tranny.
Simply adding ratios to a transmission might not make it a tool for greater efficiency, however. More ratios require more shifting elements and these add weight, complexity, and drag to the transmission. This is why ZF implemented two dog clutches in the 9HP. The beauty of a dog clutch is there’s little-to-no parasitic loss when they aren’t engaged, whereas a conventional friction clutch zaps some efficiency, and they’re relatively compact.
Parallel shaft gearbox

The tricky part of the canine clutch is how, or rather when, to engage them. Synchromesh helps dog clutches within a manual transmission from grinding away and easing gear changes. ZF relies on computers to anticipate the precise moment both halves of each dog clutch are spinning the exact same speed, and engagement happens without the slightest crunch, as proven by our short sample in an Evoque test mule.
  • Comparison Test: 2013 BMW X3 xDrive28i vs. 2013 Audi Q5 2.0T, 2013 Land Rover Range Rover Evoque
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Internal efficiencies aren’t the only source for the claimed fuel-economy improvement, either; the nine ratios play a part, too. Internal-combustion engines are most efficient in a relatively small rpm range and the biggest ratio step is just 1.65, between first and second. Having many small ratio steps in hand allows any engine coupled to a 9HP to operate in that ideal rpm window more of the time.

Oh yeah, one of the best parts of the 9HP: it’s 100 percent American made. Every

2017年7月10日星期一

WHAT'S HOT Trending styles Diamond Of The Week: 1.91 Carat

The Lowdown: 1.91 carat oval brilliant cut diamond with D color and SI1 clarity grade. This oval cut diamond features Excellent polish and Very good symmetry grades and is considered an Excellent cut oval diamond. The measurements on this particular diamond are 9.89 mm in length by 7.20 mm in width. While these are all the characteristics easily discerinible from the GIA report alone, we will go into depth on the characteristics of this engagement ring diamond to show some more detail. Watch the  video here of this oval cut diamond to get an idea of the bright white and fiery look this special oval cut has. A diamond with this quality and size combination is an amazing budget option for someone wanting a 2 carat diamond in the colorless range for a large, bright white look. 
In this post we will delve into detail on the various aspects of this special value diamond
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The Color: At D color it simply cannot get any better than this! D is at the top of the Colorless range resulting in a perfectly white diamond. Oval diamonds specifically tend to show color saturation a lot easier than other diamond shapes. Check out this video showing the color changes from D, H, and I color oval diamonds.  Because ovals tend to show color very easily we recommend in most cases stearing clear of the J color range for this shape. Otherwise, the tint of yellow closer to the J color range can become too apparent. While we won't say D color is an absolutely necessity, there is no engagement ring denying the bright white appearance and the sheer rarity of a D color is extremely appealing and gives a very crisp clear appearance to this special diamond.
The Clarity: The Slightly Included clarity range is a tricky range because many of the diamonds will not be eye clean. However we sieve through to select the best SI clarity diamond options for our clients to maximize the beautiful face up look. Notice there are not an overwhelming amount of clouds or feathers which could result in a hazy look in the diamond. An SI1 clarity diamond with with well hidden imperfections is considered flawless to the naked eye meaning you can only view inclusions on close inspection/magnification.
The Shape: The shape of an oval diamond is one of the most important characteristics and unfortunately not a listed characteristic on the GIA report of the diamond. We love the rounded symmettrical look to this oval featuring perfectly curved edges that oval diamonds are famous for. Oval's can be cut in a variety of ways. A poorly cut oval might have a bulging mid-section like a marquise cut diamond resulting in a football shape diamond. Other ovals might have a more squarish appearance detracting from the soft graceful look the oval is so well known for. Since this is an unlisted characteristic this is where a video comes in and allows you to see the nuances and outline of each diamond.

2017年7月5日星期三

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2017年6月1日星期四

New Shine Lighting quick connector pull and insert test on T5 fixture

Well, before jumping into any details, don’t forget why you  retrofit LED tube lamps. Saving energy? Yes. ROI? Yes, but even more important is, you are buying “light” for the “eyes”, and you only have one pair of eyes. Qualities do matter.
1. LED chips : Make sure your LED chips are qualified. They need to be LM80 certified, refer to the link for details:  Poor LED chips could generate harmful blue light. The light output could decay fast.  The light color could shift and make you feel dizzy.
2. No LED Hotspots : Most users feel uncomfortable looking at LED hotspots. In order to achieve even light distribution, the lamps need more LEDs inside with good light diffuser.
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Well, before jumping into any details, don’t forget why you  retrofit LED tube lamps. Saving energy? Yes. ROI? Yes, but even more important is, you are buying “light” for the “eyes”, and you only have one pair of eyes. Qualities do matter.
1. LED chips : Make sure your LED chips are qualified. They need to be LM80 certified, refer to the link for details: . Poor LED chips could generate harmful blue light. The light output could decay fast.  The light color could shift and make you feel dizzy.
2. No LED Hotspots : Most users feel uncomfortable looking at LED hotspots. In order to achieve even light distribution, the lamps need more LEDs inside with good light diffuser.

2015年6月7日星期日

Is the Blue Jays' offensive juggernaut ready to win regularly?

Thanks to Chris Colabello's game-winning two-run single to run his hitting streak to 17 games, the Toronto Blue Jays came back to beat the Houston Astroson Sunday 7-6, extending their win streak to six games and becoming the first team to 300 runs scored on the season. Toronto ran up its American League-best run differential to plus-45.
Using expected wins derived from runs scored and allowed in aggregate, the Jays should be 34-24, with the best record in the AL and first place in the AL East. In reality, they’re just 28-30, a complete disconnect between expectations and actual results. Generally, teams with massive positive run differentials wind up with winning records. A big differential conveys a massive difference between the ability to score and prevent runs, and that’s supposed to yield wins.
Is the Blue Jays’ weird result where they have a great runs differential a suggestion that they’re significantly better than their record suggests?
There are two ways of thinking about it. The more orthodox sabermetric way to look at it is that run differential is supposed to even out, that they’ve been unlucky, and that teams who lead the league in scoring are going to eventually catch up to this kind of underperformance.
The less orthodox way to think about it is that the Jays’ problem isn’t with “luck,” but the fact that while they’ve shown they have the offense to annihilate weaker pitching and run up the score in individual games, they’re pretty vincible at other times.
One interesting factoid is that the Jays have reached double digits in runs scored in nine games already, winning all of them. The Jays’ combined score in those nine games was 99-54 -- their plus-45 run differential, by happenstance, going 9-0 even as they were allowing five runs per game.
Pitching is the big part of the problem for the Jays and why they’re not delivering on all of those runs scored. The only team that has allowed more runs than Toronto is the Colorado Rockies, playing at Coors Field and at extreme altitude as an automatic handicap. The Jays are a league-worst 1-22 when scoring three or fewer runs. For the sake of a non-random comparison, theBoston Red Sox are 6-20 in those games despite their mediocre rotation and a massive negative run differential (minus-43, and just one game behind the Blue Jays).
The Jays have some but not all of the tools to fix their pitching problem. In the rotation, they’re close to the bottom of the league in quality starts, which reflects the lack of a real ace. Optimistically, Aaron Sanchez might grow into that guy, and Drew Hutchison might get fully on track. However, right now the Jays don’t have that No. 1 starter, let alone a solid No. 2. Pitchers like R.A. Dickey andMark Buehrle can round out a strong rotation, but they don’t lead it.
The bullpen is also a major problem. On Sunday, the relief crew blew an AL-leading 10th save opportunity on Sunday, forcing the need to rally to win. Toronto’s pen performance reflects less the lack of a true closer as much as the lack of a reliably structured pen in general. They’ve also allowed the worst percentage of inherited runners to score (37 percent through Saturday). In terms of talent, a team can and should be able to win with guys such as Steve Delabar,Liam Hendriks, Brett Cecil and Aaron Loup. Since pulling Cecil from the closer’s role a month ago, manager John Gibbons hasn’t had the luxury of predictable pattern for who to use and when.
Put those things together, and it shouldn’t be that much of a surprise that Sunday’s win got the Blue Jays’ record in one-run decisions up to 4-12. If you have a weak pen and a mediocre rotation, you’re going to struggle to eke out wins in tight games. Their just-completed good week on the mound involved beating up on an injury-depleted Nationals lineup, then cooling off the all-or-nothing Astros.
The good news is that the Jays have the potential to get even stronger on offense. They owe much to the big first two months delivered by Josh Donaldson (15 homers, .939 OPS), Jose Bautista (11, .936) and Russell Martin (.836 OPS). Even should any of them cool off, they’ve yet to see Edwin Encarnacion go nuts at the plate the way that he can, and he nevertheless already has a dozen homers to his credit. Plus they’ve been at less than full strength. They already have Jose Reyesback at shortstop, and Michael Saunders and Devon Travis should also both be back from the DL and play major roles in the lineup at left field and second base down the stretch.
So your takeaway should be this: Run differential isn’t an immutable law that will make the Blue Jays better as a matter of faith in mathematical inevitability, especially as long as their pitching struggles to beat people with any consistency.
What the Jays have is the talent to bludgeon opponents into submission. What they need is enough pitching to make sure they can win the close games as well. If they’re the team that adds an ace in trade while finding a way to get better results from the pen, they’ll be better set to earn actual wins, and not just the ones you expect.
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It wasn't pretty, but Cavaliers find way to pull out Game 2

Guard Matthew Dellavedova couldn’t replace what Kyrie Irving brought to the team.
But the basketball that Dellavedova played in Game 2 came in rather handy in the key moments of the Cleveland Cavaliers’ win over the Golden State Warriors.
Dellavedova played airtight defense on NBA MVP Stephen Curry and scored all nine of his points in the fourth quarter and overtime, including a free throw with 10.1 seconds left that put Cleveland ahead for good.
The Cavaliers won on the strength of an amazing, though not-so-great shooting game from LeBron James and the play of role players such as Dellavedova andTimofey Mozgov (17 points and 11 rebounds).
The Cavaliers win was their first in NBA Finals win in Franchise history. They were 0-5 prior to Sunday night.
The Cavaliers are the fourth team to beat the Warriors at Oracle Arena this season, joining the Spurs, Bulls and Grizzlies.
James does just about everything, even on an off-night
James finished with 39 points, 16 rebounds and 11 assists, despite shooting 11-of-34 from the field.
James wasn’t the only one who had trouble shooting for the Cavaliers, who shot 32.3 percent from the field. The Elias Sports Bureau notes that’s the lowest by any team in an NBA Finals road win in the shot-clock era (since 1954-55).
Elias also noted that James …
- Joined James Worthy (1988 Lakers) as the only players in NBA Finals history to have a 35-point, 15-rebound, 10-assist game. Worthy did so in a Game 7 win over the Pistons.
- Notched his fifth career triple-double in the Finals, second-most all-time, trailing Magic Johnson, who had eight.
- Had his seventh postseason game with at least 30 points, 10 rebounds and 10 assists. Only Oscar Robertson (eight) has had more.
James’ teams have won nine straight Game 2s when his team trailed 1-0 in a postseason series.
Defensive key: Shutting down Curry
The Cavaliers couldn’t shut down both Klay Thompson and Curry in the same game. But though Thompson scored 34 points, the job the Cavaliers did in thwarting Curry was ultra-impressive.
Curry was 5-23 from the field and 2-15 from 3-point range. His 13 missed 3-pointers are an NBA Finals record, breaking the mark of 11 set by John Starks of the Knicks in Game 7 of the 1994 NBA Finals against the Rockets.
Curry shot 22 percent from the field, which Elias notes is the third-worst field goal percentage by a reigning MVP who took at least 15 shots in an NBA Finals game. The only player to fare worse was Bob Cousy against the St. Louis Hawks in 1957. He shot 2-of-20 (10 percent) and 4-of-21 (21 percent).
In Cousy’s defense, shots were a lot harder to make in 1957 (when the league shot 38 percent) than they were in 2015 (when the league shot 45 percent).
Cousy also managed to win MVP of that Finals series.
Looking ahead
This is the sixth straight NBA Finals to be tied, 1-1 after two games, the fifth straight involving James.
The Game 3 winner of a tied NBA Finals series goes on to win the series 84 percent of the time (31-6).
The Cavaliers are heading home for Game 3. They’ve won 26 of their past 28 games in Cleveland.
BPI gives the Warriors a 61 percent chance to win the series. That’s a drop from 81 percent entering Game 2.
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2015年5月31日星期日

Looking ahead: Washington State Cougars

It's never too early to look ahead to next season. Over the coming weeks, we will examine what comes next for each team in the Power 5 conferences and also those outside the Power 5 who could make noise on the national stage. Today: the Washington State Cougars.
The past summer, Ernie Kent shuffled through the parking lot of a Las Vegas high school gymnasium and the 113-degree heat that covered it as he searched for prospects at an AAU tournament. The former Oregon head coach had recently accepted the top job at Washington State. He seemed excited to move forward and begin his first head-coaching stint since he was fired by the Ducks in 2010.
He recognized the challenges that would accompany the post -- the Cougars have reached the NCAA tournament just two times (2007 and 2008) since 1994 -- but remained positive about his ability to help Washington State script a new, more fruitful chapter.
He might need more time to turn the page. Washington State finished 13-18 overall and 7-11 in the Pac-12 the past season. Its opponents managed a 52.4 effective field goal percentage (296th nationally per KenPom.com), and the team will lose top scorer DaVonte Lacy(16.9 points per game), Dexter Kernich-Drew (43 percent from the 3-point line) and 7-footer Jordan Railey. Aaron Cheatum, Trevor Dunbar and Jackie Davis -- none averaged more than 1.0 ppg -- decided to transfer.
The rebuilding process will continue. Kent has added some intriguing pieces to a program that won three more games and four more conference games than the 2013-14 team. But Washington State could struggle again in 2015-16 as Kent continues to put things together in Pullman.
What the immediate future holds:
Conor Clifford, a 7-foot junior college prospect from Saddleback College in Southern California, had offers from multiple Power 5 schools. His decision to pick Washington State helped fill a major void for WSU with Riley departing.
Paired with Josh Hawkinson (14.7 PPG, 10.8 RPG, 1.1 BPG), Houston transferValentine Izundu (who sat out 2014-15) and Clifford could form a strong frontcourt for the Cougars.
“Not only [did Clifford have] the most options, but he's also kind of the missing piece, particularly with this group that's coming in the door,” Kent told the Spokesman-Review the past month. “We needed a five-man, needed some size like that, so I think the fact that he was so highly recruited is also a really good indication of where our program is.”
There are more questions but more depth on the perimeter with Lacy and Kernich-Drew both gone. But the return of veteran Ike Iroegbu (8.9 PPG) helps.Que Johnson, Brett Boese and Ny Redding all averaged less than 20 minutes per game the past season. They could all carry heavier loads next year.
Recruit Vionte Daniels, Washington's 4A prep player of the year, and juco transfer Charles Callison could help immediately too. Junior college transfersDerrien King and Renard Suggs could also play their way into the mix.
Clifford is the most important addition. If Washington State intends to take the next step, it will need its talented frontcourt players to lead the way. In the future, Kent will need more guys such as Clifford -- elite prospects who could choose other big-league schools -- to pick Washington State.
The latter has been the obstacle for decades.
Yeah, Seattle produces talent. But Pullman isn't any closer to the city than Corvallis, Spokane or Eugene. That trek across the snowy mountains to get to the other side of the state doesn't help the program's cause. But Kent boosted the previous season's win tally in his first year. This year's group could also provide an upgrade if the frontcourt matches the hype.
Kent might need more elite players to compete in the Pac-12. The team's supporters will definitely need patience.

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