I've always liked it, too... <g>

Ciao,

JZH
London, UK/So.Cal., USA
www.vsource.org

On Mon, Jan 12, 2009 at 2:05 PM, Maurice Rissman <maurice@...> wrote:
> Actually that's a fabulously simple analogy. Well done.
>
> _____
>
> From: hondarc30ownersclub2@yahoogroups.com
> [mailto:hondarc30ownersclub2@yahoogroups.com] On Behalf Of canuckrc30
> Sent: Tuesday, 13 January 2009 4:12 AM
> To: hondarc30ownersclub2@yahoogroups.com
>
> Subject: [Honda RC30 Owner's Club ] Re: Forks - Compression Adjuster -
> Preload Adjusters - Donor Springs Spacer
>
> Not really a response to anyone but .... more windings, either by a
> longer spring or a tighter helix makes a spring softer. The HRC
> springs have more windings from being longer and also have a tighter
> helix. On these particular springs the increased rate comes from the
> larger wire diameter. Best way to vision a spring is to imagine it
> uncoiled making it a torsion bar similar to the front of my old Chevy
> 4x4 (or the Dodge Valiant I drove in high school). Springs are just a
> very convenient way of packaging a torsion bar.
>
> Some info that might prove both boring to some, useful to others...
>
> HRC Springs
> Part No. 51403-NL0-821
> 37.8 mm OD
> 17.5 live windings
> 4.8 mm OD wire
> 265 mm long +/- (new springs)
> Calculated spring rate 0.853 kg/mm (47.8 lb/inch)
> Engraved/published spring rate K = 0.85 (They also made 0.80 and 0.90
> I think)
> Spacer length = 129.6 mm
> Air gap = 98 mm
>
> Standard Spring
> Part No. 51401-MR7-003
> 37.8 mm OD
> 14.5 live windings
> 4.5 mm OD wire
> 246 mm long +/- (used springs)
> calculated spring rate = 0.774 kg/mm (43.3 lb/inch)
> No published spring rate (that I know of?)
> Spacer Length = 150 mm
> Air Gap = 98 mm
>
> --- In hondarc30ownersclub <mailto:hondarc30ownersclub2%40yahoogroups.com>
> 2@yahoogroups.com, andrew edwards
> <eddiethegun@...> wrote:
>>
>> I made the point so allowance can be made for the intrusion of
> thicker walled spacers.
>> Heavier diameter wire and more/closer wound coils of a non standard
> spring can have a similar effect.
>> Â Â Regards, Eddie.
>>
>> --- On Mon, 12/1/09, canuckrc30 <no_reply@yahoogroup
> <mailto:no_reply%40yahoogroups.com> s.com> wrote:
>>
>>
>> From: canuckrc30 <no_reply@yahoogroup <mailto:no_reply%40yahoogroups.com>
> s.com>
>> Subject: [Honda RC30 Owner's Club ] Re: Forks - Compression Adjuster
> - Preload Adjusters - Donor Springs Spacer
>> To: hondarc30ownersclub <mailto:hondarc30ownersclub2%40yahoogroups.com>
> 2@yahoogroups.com
>> Received: Monday, 12 January, 2009, 2:48 PM
>>
>>
>>
>>
>>
>>
>> Funny you should ask. It can be hard on fork seals by causing higher
>> pressures (sorta like a spring, but with less linearity) inside the
>> fork. Maybe that's your leaky fork seal problem?
>>
>> If you fill your forks to 1/2 of the spec'd air gap in the manual I
>> guarantee you will feel it on the bumpy stuff. It'll be a nasty bitch
>> wanting to shake you off like an 18 year old virgin. Trust me I know,
>> it's happened to me a few times. Now I'm married so I don't have that
>> problem anymore. My grip is better from riding motorcycles which has
>> helped me a lot.
>>
>> I no longer race, and even then it was not on pavement. Not sure what
>> that has to do with setting fork oil levels though. I was number 346
>> and number 3 when I raced if memory serves correct.
>>
>> --- In hondarc30ownersclub 2@yahoogroups. com, "Dave" <arsey30@ > wrote:
>> >
>> > Then why not reduce the oil capacity by 31cc.
>> > Do you race, or just ride on the road, as you may not even notice a
>> > small change in capacity, as I don't when a seal leaks.
>> >
>> >
>> > Dave.
>> >
>> >
>> >
>> >
>> >
>> >
>> > The man's point about the wall thickness is a good one. There is 31cc
>> > of difference between the stock spacer and a same lengths NPS 1
>> > Schedule 40 PVC pipe. That is a significant amount of air gone
> missing.
>> >
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> Stay connected to the people that matter most with a smarter
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>>
>
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