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The problems of the reversal of energy single tire tires

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Project Evo G Roll-

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Comparison / slings / rollergun

Abstract

will deal only with reference to the comparison interior ballistics.

This comparison will cover speargun with a single circular double circular rollergun (a type of spear guns in the last 10 years has not been able to enjoy visibility due to legal problems inherent in its marketing)

I wrote this article trying to make it as understandable as possible for everyone.

It 'obvious that underlying this analysis there are formulas that can be more or less complicated but I found it more profitable to try to make possible a more discursive thought process that leads to certain results rather than to bore into a sterile list of formulas that can easily bored with any player, otherwise become available to investigate all reasoning in the forums.

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He has always tried to make a comparison between double and single tire rubber, we have heard of all, the comparisons have seen plenty of evidence involved, sometimes using the same auction, sometimes using a different auction, often using different tires and cut into different factors. Obviously too many variables can not provide data for a comparison is not objectionable, provided there is not a comparison questionable.

I want to analyze in theory this topic so that it can be starting point for discussion between fans and occasions: from this moment of confrontation are some interesting ideas that might emerge in that article and is therefore subject to possible revisions.

In this analysis does not even speak of the mass of the gun and the mass of the auction, then these two variables will be chosen on the basis of the available energy in the system and the way in which this energy is released .

The energy is then analyzed and compared to the gross friction, recoil, etc ...

I chose to do this analysis, as the appropriate constant parameters, namely:

1. The analysis is done using the curves for the cycles of loading and unloading of tires Cressi G-20: I am such an analysis was made possible thanks to charts made by Ing. Endorossoro I do not know personally but whom I thank for making them public
2. This comparison is made with the same tire compound and the same stretch factor
3. E 'was chosen to analyze the tires to work online in the individual circular in the double circular
4. E 'was chosen to fix the length of the bullet and 3.5 cm to 1.5 cm portion of the rubber after ligation with respect to each circular analyzed
5. The comparison he uses an auction in which the two pins are placed at a distance of 7cm
6. The speargun with double circular uses the configuration that provides as much energy available, the single hole in tested
7. not tested any friction which suggests that the tires do not struscino on trees, etc. ...

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Arbalete 90 double circular

Riepiloghiamo i dati fondamentali di questa analisi relativa al doppio circolare:

• Spinta globale: 57 cm
• Energia restituita: 198 Joule
• Punteggio (*): 100

Arbalete 90 con singolo circolare

summarize the basic data of this analysis on the single circular

• Boost overall: 57 cm
• returned Energy: 102 Joule
• score (*): 72

First Reflections

Using tires of the same type with the same stretch factor of the energy available to a double-ring is always higher than that of a speargun with a single round of the nominal length.

Without this reflection, the first question that might be raised is:

area energy of the double round speargun which analyzed with single circular can be compared?

A question that is less difficult than it looks!

Arbalete 167 single circular

The push continues for another 8 cm that the graph is not to set a display limit

summarize the basic data of this analysis

on the single circular 167cm (long ?!?):

• Boost overall: 108 cm
• returned Energy: 198 Joule
• score (*): 140

Well, our question was answered by analyzing the energy area alone we have found what is the spear guns is comparable to our 90 with double movement: it is dell'arbalete with 167 single round!

Paradox

Looking for a comparison of the energy of a triple circolare con un singolo circolare ci saremmo ritrovati addirittura a paragonare un 90 triplo con un singolo circolare di circa 2 metri e mezzo.

Credo quindi che possa essere evidente come il confronto delle sole aree energetiche sia assolutamente inadeguato per paragonare i diversi sistemi.

Quali domande ci stimola questa riflessione:

• Siamo sicuri che abbia un senso paragonare un arbalete only by comparing the energy area??
• will be so indifferent to the length of the thrust??
• The double circular urges the auction for only 57cm speargun while it pushes the single-round auction for even 108cm, we are sure that it is appropriate to neglect this important difference??
• ... and how we can take this into account??

But here, at this point, I had to search a variable that could take into account both the length and energy of the test, albeit approximate, due to evidence and empiricism, which could have some bearing on reality.

(*) Here comes into play the famous score, a value that is determined by an algorithm, if we are also expressed in the form of function: what is certain that I had to seek verification of these statements by the empiricism of some tests I've had good results.

On based on this variable, this here is what is the generic score with a single spear guns which I think is comparable to 90 circular double circular

Arbalete 120 with single circular

summarize the basic data of this analysis

on the single circular 120cm:

• Boost Global 77cm
• returned Energy: 141 Joule
• score (*): 100

What is this comparable to roller speargun?

Well, the traditional classic roller tires stretched to 300%

and be contented with a boost of only 77 cm active

reproduces the feel of this band guns with 120 single round.

This means that a traditional classic roller

that exploits the full 90 cm available

would score a higher energy.

more reason to work with each roller tires stretched

energy will have a score even higher.

I always remember that we are analyzing the energy before any friction.

There is a 90 compared to 90 single circular double circular?

But it is also possible to find a speargun 90 with single circular cararatteristica have the energy to get a draw with the double Circular analyzed.

We must increase the energy in this case and, using the same compound tire, we will increase the larger diameter and more stretched.

Arbalete 90 single circular stretched from 20 to 380%

summarize the basic data of this analysis

for the individual round of 90 cm:

• Boost Global 63cm
• returned Energy: 177 Joule
• score (*): 100

a speargun that is configured as single-round score will get the same energy with double circular dell'arbalete

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Conclusioni

Non ritengo sufficiente ai fini di un confronto

la sola analisi dell'area energetica

o la sola analisi della lunghezza della spinta

ma occorre una variabile che tenga conto di entrambe

...quella che sto utilizzando I simply called

energy score ... and score as indicated

... certainly not found in any physics book

but This does not make it any more valid or less valid

simply is still being verified.

In comparisons based on the score energy

the performance of circular and double roller classic

were nearly equivalent

(even if using only 77cm roller thrust active

otherwise obtains an advantage the rollergun)

speargun while with the single circular

will require a large-diameter tires or more stretching

to be equivalent.

With the same compound and stretching factor

a double round scores a power

always superior to a single circular

it will need to use

larger or more tensions tire

to be equivalent to twice the circular.

Ritengo ovvio 

(ho quindi evitato di riportare i grafici a dimostrazione)

che un roller che sfrutti una gomma più lunga

(che sia pretensionata o adotti altri sistemi di maggior tensionamento)

oppure utilizzi un circolare aggiuntivo

avrà un maggior punteggio energetico rispetto al roller classico

Precisazione:

Il pareggio del punteggio energetico

non significa pari prestazioni relative alla balistica esterna

anche perché

occorre tener present

different friction of the various systems

different bullets, spears, drums, etc. ...

that this impact on the external ballistics

(recoil, the recoil time, energy loss, spines, spin, etc ...)

Ad. es.

a more powerful long with a lower average energy

be more progressive and will result in smaller bending

rod, have a significant impact

up performance and accuracy

well as having a reduced energy loss

due to the recoil

Renting Indian Bridal Lengha

's blog Speargun - Spear Gun

One way to exchange comments, views and thoughts

References:

Site Speargun - spearguns

Rollergun Group on Facebook

Why a blog linked to a site?

A web site is a uni-directional communication, information that is given no chance to reply.
What I want to avoid the risk of information pilotata, unilaterale e in cui è difficile far ascoltare la voce di chi dissente o semplicemente vorrebbe dire la propria opinione al riguardo.

Nel nostro settore si sta verificando sempre più spesso questo fenomeno:

• che si tratti di forum chiusi in cui la voce la voce del dissenso è zittita dalla semplice selezione dell'utenza, che accetta di buon grado il ruolo di discepolo e che viene organizzata a porte chiuse, una sorta di piccola massoneria ma in cui le regole vengono pubblicamente dichiarate e questo ha il merito di rendere trasparenti le intenzioni, che piacciano o meno è un altro discorso, l'importante è che non si faccia the impropriety of speaking to the absent or unable to refer to the reply
• that it is theoretically open forum where it silences those who are not in line with disclosure often driven by a few who try to spread simply by prohibiting the 'access and the opportunity to speak to those who contradict that information. Obviously the staff, with the competition with a handful of users, plays a key role, managing to engage and drag another good part of users believe the good faith of all. In these cases, the misconduct is the first 'illusion of transparency that is given to readers. Abuse of who becomes exponential when referring to people (or ideas and solutions of people) whose participation in the forum is inhibited because double ... impropriety involving both stakeholders believe that the unsuspecting reader to assist discussion with correct and that might even be inclined to think that the lack of an adversarial process is due to the unanimity of consensus, which creates a lot of embarrassment in the reply in front of such uniformity of thought.

Why even allow anonymous comments

The modern world we are getting used to no longer evaluate ideas, comments, information for what it objectively but are increasingly trying to credit them only by author, if properly credited author who will get credibility in the face of statements or speeches unless corrected.

It was said that the clothes do not make the Monaco, but this is what happens in our society.
With a good habit we Berci of sermons that can also have your second purpose is not legitimate: what I'd like to achieve good monaco preaches the good and not good habit
... so they are welcome in this very blog comments articulated, even if anonymous, makes no effort to intortare with big words most naive readers
... more advantage of the anonymous comments that the author does not become cumbersome or the presence of scienziatone duty he believes to be the only one in possession of sacred truth nor Lappan fisherman who fish for a year and is likely to be underestimated even when the ' argument are the techniques of fishing for each comment is that it expresses and its content is evaluated and considered for what it simply expresses and no comments become valid or invalid by virtue only of the author.

Enter your comment
are also allowed anonymous comments
a your submission resterà comunque un atto gradito

...i commenti per essere convalidati e quindi pubblicati dovranno sottostare a 4 regole:
educazione, rispetto verso persone e idee altrui, essere in tema con l'argomento, essere scritti in un italiano 'almeno decente' (eccezion fatta per gli stranieri)
...se il vostro commento non viene pubblicato verificate se avete rispettato queste regole ed eventualmente riformulatelo...
...un criterio di moderazione che, a mio parere, dovrebbe avvenire ovunque, anche nei forum...

grazie

Lots Of Pain 40 Weeks

Desert alternative ... to Ezuz!

Dopo la discussione della tesina di baccalaureato avevo molta voglia di deserto e poca voglia di stancarmi. Insieme ad un caro amico tedesco ci siamo quindi messi alla ricerca di un posto sperduto dove poter affittare una stanza ("zimmer" tra l'altro è ormai diventato un termine ebraico!). Ci siamo imbattuti per caso in un yishuv qehilatì di nome Ezuz a 3 Km dal confine egiziano, a sud di Nizzana. Eravamo davvero curiosi di vedere chi potesse vivere in un posto del genere e quindi ci siamo andati!

E 'was very interesting. In this settlement there live about 50 families from various sources, the owner of our room, for example, was Dutch. The houses were built in very rudimentary, sometimes using waste materials, but also old rail cars and buses out of service! In turn, the streets, a mess and so many old car wrecks ... a haven for local children who, in the best tradition of the kibbutz, go around barefoot.

Ezuz Within walking distance is also a park with two old wells and a section of the old Turkish railway was to link Palestine with Egypt. After having walked around in these places we also bought some tiles cheese made from goat's milk, delicious!

the evening we dined in the company of hundreds of crickets through their singing us sleep.

The next morning, after a long sleep and a delicious breakfast, we headed by car (through a road in bad condition!) To the border with Egypt. We then climbed back on the road Nizzana No 10.

Later we also visited the archaeological site of Shivta, a magnificent Nabatean city with three beautiful churches.

Other interesting photos can be found by clicking here . Note the hidden tank that had been indicated by the owner of our room.