Clutch springs - what do i have here?

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axo
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Clutch springs - what do i have here?

Post by axo »

I got this set of springs from VT 6 years ago and never installed them on my clutch. I believe i still have the stock ones, and a 1000 RPM KRS spring that i did install.
These are kind of a brownish black.. Do springs are coded with colors? I saw there are yellow and blue so do you know which ones do i have here? what RPM are these? And what difference will these make on my Dio?
Thank you.
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1989 Honda Dio SP
AF18E - 82cc Taiwan kit - 24mm Oko - KRS pulley kit - Kevlar belt - 8.44:1 gears - 1000RPM Center spring - 7 grams roller weights - R1 sectional exhaust - 130lb pilot :)
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Wheelman-111
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Re: Clutch springs - what do i have here?

Post by Wheelman-111 »

Greetings;

I suggest you mic the wire thickness and someone here can compare with you.
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Re: Clutch springs - what do i have here?

Post by Trafficjamz »

I don't know if there is some sorta industry standard or not. But the spring colors I normally see are...

Blue = 1k

Yellow = 1.5k

Red = 2k

I have no idea about black.
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losthope
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Re: Clutch springs - what do i have here?

Post by losthope »

I have yellows and they are 3000rpm
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Re: Clutch springs - what do i have here?

Post by Trafficjamz »

Yeah I don't think there is any standard :sad:

That sucks.
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Re: Clutch springs - what do i have here?

Post by az_slynch »

Doesn't the color code specify how many RPMs the new spring takes up above the stock spring's take-up speed? A yellow 3K would make more sense then if your stock spring hooks up around 2K. Idle on these 50cc Hondas is about 1800, so ~2K could be a reasonable assumption for a stock spring. Yellow would just hold back another 1K before engaging at 3K RPM.
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Trafficjamz
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Re: Clutch springs - what do i have here?

Post by Trafficjamz »

az_slynch wrote:Doesn't the color code specify how many RPMs the new spring takes up above the stock spring's take-up speed? A yellow 3K would make more sense then if your stock spring hooks up around 2K. Idle on these 50cc Hondas is about 1800, so ~2K could be a reasonable assumption for a stock spring. Yellow would just hold back another 1K before engaging at 3K RPM.
When talking about clutch grab springs, 1k's 2k's or whatever, it is always 1000 rpm or 2000rpm HIGHER than stock.
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Munstah666
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Re: Clutch springs - what do i have here?

Post by Munstah666 »

There is NO INDUSTRY STANDARD COLOR CODE for clutch springs and center springs. Colors and designation varies by mabnufacturer, makes it hella more FUN! :lol:
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Re: Clutch springs - what do i have here?

Post by Wheelman-111 »

Greetings:

No color standard, but it's a safe bet that the wire wound into those coils will be thicker on the stronger springs. Material quality will affect durability.

The Taiwan set I purchased measured 1.0, 1.2, 1.4, etc. in blue, yellow, and red.

Get a Harbor Freight digital caliper, it comes I handy for $15.
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Most of my money is spent on scooterparts. The rest is just wasted.
"ISO": '03 Vespa ET4 Malossi187 74MPH
Flash 9: 2001 Elite SR Contesta 72 ZX Tran, 9:1 Gears, Stock Airbox/Carb/Pipe 58.8 MPH
Punkin: 2010 Vespa/Malossi S78, 61MPH
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axo
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Re: Clutch springs - what do i have here?

Post by axo »

ok.
I measured them today with the digital caliper and got roughly 1.7 mm of wire thickness. There was some variation at different points ranging from 1.67 to 1.73 because i guess the caliper is cheap and the springs are not perfectly round but got 1.7 at many places.
Can you guys check your springs please and give me some idea?
Thank you.
1989 Honda Dio SP
AF18E - 82cc Taiwan kit - 24mm Oko - KRS pulley kit - Kevlar belt - 8.44:1 gears - 1000RPM Center spring - 7 grams roller weights - R1 sectional exhaust - 130lb pilot :)
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axo
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Re: Clutch springs - what do i have here?

Post by axo »

I think i got my answer here: http://cgi.ebay.com/ebaymotors/POLINI-P ... arQ5fParts

I had the springs stored in a small plastic Polini box so i guess thats what i have here. 1000 rpm springs.
What should i do then? get 2k or try these first?
1989 Honda Dio SP
AF18E - 82cc Taiwan kit - 24mm Oko - KRS pulley kit - Kevlar belt - 8.44:1 gears - 1000RPM Center spring - 7 grams roller weights - R1 sectional exhaust - 130lb pilot :)
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