Ravigneaux planetary gearset and Puya (band): Difference between pages

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{{Infobox musical artist
{{unreferenced|date=February 2008}}
| Name = Puya
The '''Ravigneaux gearset''' is a double planetary gear set commonly used in [[automatic transmission]]s. This planetary gear set is constructed from two gear pairs, ring-planet and planet-planet. The Ravigneaux set has two sun gear wheels, a large sun and a small sun, and a single carrier gear with two independent planetary gear wheels connected to it, an inner planet and an outer planet. The carrier is one [[wheel]] but has two [[Radius|radii]] to couple with the inner and outer planets, respectively. The two planet [[gear]]s rotate independently of the carrier but co-rotate with a fixed gear [[ratio]] with respect to each other. The inner planet couples with the small sun gear and co-rotates at a fixed gear ratio with respect to it. The outer planet couples with the large sun gear and co-rotates with a fixed gear ratio with respect to it. Finally, the ring gear also couples and co-rotates with the outer planet in a fixed gear ratio with respect to it.
| Img = [[Image:puya.jpg]]
| Img_capt = Puya circa 1998
| Img_size = 16Kb
| Background = group_or_band
| Alias =
| Origin = [[San Juan, Puerto Rico]]
| Genre = [[Nu metal]]<ref name="musicmight">{{cite web|last=Sharpe-Young|first=Garry|title=MusicMight Biography|url=http://musicmight.com/artist/puerto+rico/puya|accessdate=2008-09-15}}</ref>
| Occupation =
| Years_active = [[1988 in music|1988]]&mdash;2005
| Label =
| Associated_acts =
| URL =
| Current_members =
| Past_members = Ramón Ortíz<br/>Harold Hopkins<br/>Eduardo Paniagua<br/>Mike Smart<br/>José Rodríguez<br/>Sergio Curbelo
}}
'''Puya''' was a [[nu metal]] band from [[San Juan, Puerto Rico|San Juan]], [[Puerto Rico]]. Originally playing only [[instrumental]]s, they added vocalist Sergio Curbelo and in [[1992]] they changed their name to Puya and moved to [[Fort Lauderdale, Florida|Fort Lauderdale]], [[Florida]] where they created their mix of [[Salsa music|salsa]] and [[rap metal]].


==Band History==
== Axis Motions and Constraints ==
===Early Years===
The Ravigneaux block imposes four kinematic and four [[Geometry|geometric]] constraints on the four connected axes and the two internal wheels (inner and outer planets):
Puya was formed in [[1988]] originally with the name '''Whisker Biscuit''' by guitarist Ramón Ortíz (formerly with [[Mattador]]) together with [[bassist]] Harold Hopkins and [[drummer]] Eduardo Paniagua. Originally they devoted themselves to playing instrumental songs, and then covers in the [[San Juan, Puerto Rico|San Juan]] music scene.


===Change and Success===
rCiωC = rSsωSs + rPiωPi , rCi = rSs + rPi
In the early 90s, vocalist Sergio Curbelo joined the band and they changed their name to '''Puya'''. The band also relocated to [[Fort Lauderdale, Florida|Fort Lauderdale]], [[Florida]] where they met Jeff Renza who helped them develop, and polish their sound. In [[1995]], they released their [[Puya (album)|eponymous debut album]].


There they also met producer [[Gustavo Santaolalla]] who signed them to [[Music Corporation of America|MCA]] and they released their second album titled ''[[Fundamental (Puya album)|Fundamental]]'' which received critical praise. This propelled the band to stardom even landing them in the second stage of [[Ozzfest]] where they shared the opening slot with [[Slipknot (band)|Slipknot]] in [[1999]].
rCoωC = rSlωSl + rPoωPo , rCo = rSl + rPo


In [[2000]], one of their songs ("Tírale"), was included in the soundtrack of the movie ''[[Heavy Metal 2000]]'', the only track with lyrics in [[Spanish language|Spanish]] from the collection. Established in the nu metal scene, they opened for such bands as [[Sepultura]], [[Red Hot Chili Peppers]], [[Pantera]] and [[Kiss (band)|KISS]]. They also recorded a cover song - using their particular style - of [[The Police]]'s "[[Ghost in the Machine|Spirits in the Material World]]" in Spanish. The song was titled "Almas en un mundo material".
(rCo - rCi)ωC = rPiωPi + rPoωPo , rCo - rCi= rPo + rPi


===Decline===
rRωR = rCoωC + rPoωPo , rR = rCo + rPo
In [[2001]], the band released their second album with MCA titled ''[[Union (Puya album)|Unión]]''. The album was not received as well as their previous two, and some of the members were already working in other projects. The band then faded from the musical scene.


==Current Whereabouts==
In terms of the ring-to-small sun good ratio gRSs = rR/rSs and the ring-to-large sun gear ratio gRSl = rR/rSl, the key kinematic constraints are
As of [[2007]], most of the members are involved in other projects.


* Guitarist Ramón Ortíz formed the band [[Ankla]] in [[2001]]. They are set to appear in [[Ozzfest]] 's second stage in [[2007]].
(gRSs – 1)ωC = gRSs·ωR - ωSs
* Harold Hopkins formed the band '''Yeva''' in Puerto Rico.


==Band Members==
(gRSl + 1)ωC = gRSl·ωR + ωSl
* Ramón Ortíz - [[guitar]]s
* Eduardo Paniagua - [[Drum kit|drums]]
* Harold Hopkins - [[bass guitar]]
* Sergio Curbelo - [[Singing|vocals]]
* José Rodríguez
* Mike Smart


==Discography==
The six degrees of freedom are reduced to two independent degrees of freedom.
* Whisker Biscuit
* ''[[Puya (album)|Puya]]'' ([[1995]])
* ''[[Fundamental (Puya album)|Fundamental]]'' ([[1999]])
* ''[[Union (Puya album)|Union]]'' ([[2001]])


==See also==
The gear ratios are also the ratios of the number of teeth on each gear and the ratios of torques in each axis, gRSl = NR/NSl = τR/τSl and gRSs = NR/NSs = τR/τSs.
* [[Puerto Rican rock]]


==External links==
* [http://www.puya-tribute.com PUYA Tribute website]


[[Category:Nu metal musical groups]]
== Links ==


[[it:Puya (gruppo musicale)]]
* [http://www.selmec.org.uk/article_0001_ravigneaux_planetary_transmission.aspx Meccano model of a Ravigneaux Planetary Transmission] in the [[Hummer_H1|H1 Hummer]] by Alan Wenbourne
[[pt:Puya (banda)]]

[[Category:Gears]]

Revision as of 06:31, 10 October 2008

Puya

Puya was a nu metal band from San Juan, Puerto Rico. Originally playing only instrumentals, they added vocalist Sergio Curbelo and in 1992 they changed their name to Puya and moved to Fort Lauderdale, Florida where they created their mix of salsa and rap metal.

Band History

Early Years

Puya was formed in 1988 originally with the name Whisker Biscuit by guitarist Ramón Ortíz (formerly with Mattador) together with bassist Harold Hopkins and drummer Eduardo Paniagua. Originally they devoted themselves to playing instrumental songs, and then covers in the San Juan music scene.

Change and Success

In the early 90s, vocalist Sergio Curbelo joined the band and they changed their name to Puya. The band also relocated to Fort Lauderdale, Florida where they met Jeff Renza who helped them develop, and polish their sound. In 1995, they released their eponymous debut album.

There they also met producer Gustavo Santaolalla who signed them to MCA and they released their second album titled Fundamental which received critical praise. This propelled the band to stardom even landing them in the second stage of Ozzfest where they shared the opening slot with Slipknot in 1999.

In 2000, one of their songs ("Tírale"), was included in the soundtrack of the movie Heavy Metal 2000, the only track with lyrics in Spanish from the collection. Established in the nu metal scene, they opened for such bands as Sepultura, Red Hot Chili Peppers, Pantera and KISS. They also recorded a cover song - using their particular style - of The Police's "Spirits in the Material World" in Spanish. The song was titled "Almas en un mundo material".

Decline

In 2001, the band released their second album with MCA titled Unión. The album was not received as well as their previous two, and some of the members were already working in other projects. The band then faded from the musical scene.

Current Whereabouts

As of 2007, most of the members are involved in other projects.

  • Guitarist Ramón Ortíz formed the band Ankla in 2001. They are set to appear in Ozzfest 's second stage in 2007.
  • Harold Hopkins formed the band Yeva in Puerto Rico.

Band Members

Discography

See also

External links

  1. ^ Sharpe-Young, Garry. "MusicMight Biography". Retrieved 2008-09-15.
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