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Old 03-24-2008, 09:09 PM   #1
kdghorpade
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Default Birel set up guide

Is there a basic set up guide for the various birel chassis as provided , for example, by Arrows in their owners manual. The chasiss we get come with no literature .
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Old 03-25-2008, 07:16 AM   #2
Garry Lobaugh
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The set up information is on the Birel site. www.birel.com

The 2008 issue of Birel News has several helpful articles. MRP does have chassis seminars and hand outs during the winter months. Our next chassis seminar will be at the track on the first weekend of April.
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Old 04-06-2009, 10:53 PM   #3
Salamoed
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Dear Sir,
Thanks for giving us the opportunity to exchange technical information that could help us in our racing performance.

At the present time I would like to know why the Birel base set up guide is calling for the use of negative camber.

Thanks and regards,

Eduardo Salamone
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Old 04-07-2009, 08:04 AM   #4
Marc Miller
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Eduardo,

Can you please provide a link of where you see this referenced. Thanks in advance.
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Old 04-07-2009, 08:40 AM   #5
Lance Z
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I have the same question, under "Birel and Monza Racing Kart Discussion", the thread "Jr. National Chassis Selection", it lists the R30CY running a "12mm negative camber" is that right?
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Old 04-07-2009, 08:51 AM   #6
Marc Miller
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Lance - that was a mistake. I will edit it - it was supposed to be 2mm of negative camber, which likely was done to take some front grip away and get a better balance. The RY30 is usually set up w/ 0 degrees of camber.
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Old 04-08-2009, 09:00 AM   #7
Salamoed
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Quote:
Originally Posted by Marc Miller View Post
Eduardo,

Can you please provide a link of where you see this referenced. Thanks in advance.
Set-up base
A prescindere dalle gomme e dalle motorizzazioni utilizzate, i tecnici Birel hanno individuato un set-up di partenza abbastanza versatile che può essere utilizzato come base, prima di intervenire sul telaio in base alle proprie caratteristiche di guida e alle condizioni della pista. Queste regolazioni standard prevedono 2 mm di convergenza aperta davanti, 5 mm di campanatura aperta sotto e il caster neutro a zero. L’assale “F” da 1040, la barra anteriore e il 4º tubo ancorati, la carreggiata anteriore con due spessori interni e quella posteriore a 139,8 mm. Il sedile, infine, è posizionato con le misure standard di 123,5 cm rilevati tra schiena e traversa anteriore e 22 cm, ancora tra la schiena e l’assale. Gli accessori (mozzi, flange dell’assale e porta-disco) si intendono in alluminio. Ciò premesso, una volta che si va ad agire sulle varie regolazioni consentite, sia all’anteriore, sia al posteriore, è utile ricordare di fare pochi interventi alla volta. Oltre alle regolazioni, ovviamente, si può modificare il comportamento del telaio anche attraverso gli accessori. Per esempio, utilizzando i componenti in magnesio si può ottimizzare la “scorrevolezza” quando la pista nell’arco della manifestazione si “gomma” e il grip aumenta.
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Old 04-08-2009, 09:04 AM   #8
Salamoed
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Default BIrel Set up guide

Quote:
Originally Posted by Marc Miller View Post
Eduardo,

Can you please provide a link of where you see this referenced. Thanks in advance.
address


http://209.227.233.164/it/kf_line.asp
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Old 04-08-2009, 09:11 AM   #9
Chris Lobaugh
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As Marc said negative camber is used to take front grip away and is most noticeable from the center of the corner off. Birel suggests this as a baseline set up since almost all of the categories use a hard tire and most drivers experience a "loose" or "free" condition especially from the center of the corner to the exit. Negative camber will help this condition most of the time. Hope this helps...
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Old 04-09-2009, 01:29 AM   #10
Salamoed
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Question Negative camber

Chris Thanks for your answer, I don´´t understand Marc coments when one mention to put negative camber to take some front grip away. I have read in other literature (Arrow set up guide as example) the negative camber give you more front grip.
You said, in the following paragraph : experience a "loose" or "free" condition especially from the center of the corner to the exit. Negative camber will help this condition most of the time.

In my undestanding giving more grip will help this loose or free condition adding more grip to the hard tire. (In argentina MG Orange). Pls help me with this concepts because I am little confused.

Thanks for your help,

Eduardo Salamone
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Old 04-10-2009, 09:08 AM   #11
Chris Lobaugh
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First of all...5mm negative camber is a baseline or "Starting point". You have to start somewhere and this is a good place to start...not necessarily where you will always run the chassis. Have you tested the negative camber for yourself yet? I was on track with a driver yesterday who was experiencing a rear loose condition especially on high speed corners and the front of the chassis was a bit "nervous". The first thing that I changed was the camber. I went from +2mm to 0 and then from 0 to -2mm and the problem was solved. I am not saying that this is going to be your magic solution but I think that it would be worth a test.

Let's start from the beginning: Which model chassis are you using? What is the category? What is the minimum weight? Are you using a standard Freeline or Tillet seat? 40 or 50mm axle? Which compound axle are you using? Are you running with the rear of the kart high or low? Are you running with the front of the kart high or low? Toe? Camber? Caster Angle? I am not familiar with the MG orange...is that comparable to a Bridgestone YHC? I assume that these are 5" diameter tires as opposed to 6" diameter tires? Are you using Freeline Magnesium wheels? Please tell me briefly what you have tested and what results you have seen and I will do what I can to assist. Thanks
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Last edited by Chris Lobaugh; 04-10-2009 at 01:32 PM.
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Old 04-10-2009, 12:47 PM   #12
Salamoed
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Quote:
Originally Posted by Garry Lobaugh View Post
The set up information is on the Birel site. www.birel.com

The 2008 issue of Birel News has several helpful articles. MRP does have chassis seminars and hand outs during the winter months. Our next chassis seminar will be at the track on the first weekend of April.
Garry,
I have subscribed today to the Birel News. One of the problem that I have in compare with Tony Kripton is that we cannot make the tail of the Birel to move during exit of the curbe, I will be trying now diferent soft axis in 40 and 50 mm, do you have some hints to help me on this matter. Thanks and regards,
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