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Aleck002

Joined:

May 13

Posts: 1

Aleck002 says:

What is best?

Hi,


I am new to this forum so to begin with, hello!

Also I am a third year Motorcycle Design student about to embark on my final year and therefore my final year project.

What I wish to know from those with far more experience and knowledge in these things than me is, why are girder forks now only exclusively found on classic machines and those high end unaffordable motorcycles?

Is this down to the technology being outdated? 
The performance being far better on telescopics?
Or there is no high volume manufacturer brave enough to re use and redevelop this 'old' technology?

Now I have researched this and have yet to find a definite reason for the redundancy of the girder fork, I can understand how they would be out performed by a telescopic fork but only really at the serious racing scene?

There must be a reason and I imagine one of you knowledgable sort have an answer or at least an opinion to help guide my research.

Regardless any help would be much obliged.

Kind regards
Aleck

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  • Posted 2 years ago (27 May 2013 14:37)

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Kamchat

Joined:

Aug 02

Posts: 29251

Kamchat says:

This

What is best in life?

To crush your enemies -- See them driven before you, and to hear the lamentation of their women! :sleep:

 

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Kamchat

Joined:

Aug 02

Posts: 29251

Kamchat says:

on the other hand ..

....

'many racing frame engineers seem to agree, as you’ll usually see some type of girder design on cutting edge racing frames. Girder designs are adaptable to virtually any chassis configuration and they can be made to provide excellent handling characteristics over a broad range of steering neck rake angles and trail can be manipulated very easily to suit specific requirements. A Girder can be made very strong but also very light in weight and in general a properly designed Girder pound for pound will deflect less than any other type of fork system. The only reason that Girders are not more popular than they are is because they are more complicated and hence more expensive to manufacturer and they really need to be custom made for a specific frame configuration.'

 

Google is your friend. :winkie: 

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snev

Joined:

Jan 11

Posts: 8086

snev says:

What is best?

Sorry I can't help you  Aleck




I'm a lager man...:biggrin:

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babyblade41

Joined:

Aug 05

Posts: 7568

babyblade41 says:

Forgive me

but if you are a motorcycle design student, wouldn't this be a fundamental part of the course???

But then I am female and know nothing about nothing sorry:tongue:

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Diablere

Joined:

Dec 12

Posts: 1437

Diablere says:

Snev

i'm sure i read that as a LARGER man?:winkie:

any way its got to be iron bru for girders?:biggrin:

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snev

Joined:

Jan 11

Posts: 8086

snev says:

diablere....

^ ^ ^ ^ ^ ^ ^ 

:lol::lol::lol::lol::lol::lol::lol:

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babyblade41

Joined:

Aug 05

Posts: 7568

babyblade41 says:

Thes replies

including mine are not very constructive are they ??

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entus

Joined:

Sep 11

Posts: 1103

entus says:

In my experience

you don't tend to make a balls up of fork seals if you have girder forks.:tongue:

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babyblade41

Joined:

Aug 05

Posts: 7568

babyblade41 says:

Thank you

for a good reply to OP Entus.:smile

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ANichol

Joined:

Aug 02

Posts: 997

ANichol says:

Girder forks

Telescopic brings better results at top end on race track.

Race kudos brings sales.

Tooling to make both girders and telescopics is additional expenditure.

Tele's it is then

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