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Main
Date: 09 Jun 2005 08:52:50
From: Scott..
Subject: adding trail to a tailwind
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Hiya
Any suggestions on how much trail I should get added to my tailwind? The
high speed stability is fine but anything below 7kph / 4mph and the bike is
a handful. I was thinkin about 4 inches. The trail is currently in the 1
inch or less range. I have a feeling that the brakepads and rim wall may not
line up if the fork is straightened too much.
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Date: 11 Jun 2005 16:47:10
From: Bob Parnass
Subject: Re: adding trail to a tailwind
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On Thu, 09 Jun 2005 08:52:50 +0000, Scott.. wrote:
> Any suggestions on how much trail I should get added to my tailwind? The
> high speed stability is fine but anything below 7kph / 4mph and the bike is
> a handful. ...
I can't answer your question, except to say that my long wheelebase RANS
Gliss becomes difficult to steer at the same speed.
--
=========================================================================
Bob Parnass, AJ9S GNU/Linux User http://parnass.com
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Date: 12 Jun 2005 00:36:09
From: Samuel Burkeen
Subject: Re: adding trail to a tailwind
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I have a tailwind and plugged Patterson's equations into Mathcad. His
equations verify exactly what you say below. For example, reducing the fork
offset 10% from the measured value to increase trail caused Patterson's
sensitivity measure to increase by a whopping 67%. The fork flop nearly
doubled. This is not the direction you want to go. Increasing the trail on
the Tailwind will make it unridable at low speed. The design is already on
the edge at low speed and I have the scars to prove it.
"hfhfh" <noneofyourdamnbusiness@fuckoff.com > wrote in message
news:2pjma1tcnsf3mvko1lbqfdoskue7jplfhd@4ax.com...
> I'm with you. Adding trail aids high speed stability to the detriment
> of low speed stability. If you want low speed stability, lose some
> trail at the possible cost of making steering twitchy at higher
> speeds.
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Date: 12 Jun 2005 20:16:06
From: Scott..
Subject: Re: adding trail to a tailwind
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thanks guys
I changed my handlebars to a wider set yesterday and noticed an increased
stability at low speeds today. What also seemed to help is having just one
hand on the bars at a time. Weird
"Samuel Burkeen" <samuel.burkeen@wdn.com > wrote in message
news:ZrLqe.158$983.38936@monger.newsread.com...
>I have a tailwind and plugged Patterson's equations into Mathcad. His
>equations verify exactly what you say below. For example, reducing the
>fork offset 10% from the measured value to increase trail caused
>Patterson's sensitivity measure to increase by a whopping 67%. The fork
>flop nearly doubled. This is not the direction you want to go. Increasing
>the trail on the Tailwind will make it unridable at low speed. The design
>is already on the edge at low speed and I have the scars to prove it.
>
>
> "hfhfh" <noneofyourdamnbusiness@fuckoff.com> wrote in message
> news:2pjma1tcnsf3mvko1lbqfdoskue7jplfhd@4ax.com...
>> I'm with you. Adding trail aids high speed stability to the detriment
>> of low speed stability. If you want low speed stability, lose some
>> trail at the possible cost of making steering twitchy at higher
>> speeds.
>
>
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