Bouncy ride - would new springs help? - SV650.org

bat-kam · 30-06-13, 10:53 AM

I know that this has been discussed several time but I am struggling to find it on the forum.

Recently I have noticed that when going around the corner or a roundabout the front end of the bike jumps when going over an uneven surface. This is very unsettling as it makes the bike to stand upright or jump and unsettle me enough to slow right down.
So I was thinking of upgrading the springs front and back to Hyperpro. Would this cure the issue? Are those springs any good? What oil should I use for the forks? 5 or 10 or 15W?

Thanks for the advise in advance
Kam

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Sid Squid · 30-06-13, 08:58 PM

The standard SV springs aren't known for being heavy, whether they're right for you depends on, primarily, your weight. If the suspension is 'bouncy' this usually signifies a lack of damping - how many miles has the fork oil done?

21QUEST · 30-06-13, 10:30 PM

Quote:

Originally Posted by Sid Squid

The standard SV springs aren't known for being heavy, whether they're right for you depends on, primarily, your weight. If the suspension is 'bouncy' this usually signifies a lack of damping - how many miles has the fork oil done?

Glad you answered before someone weighed in with "springs on the SV are utter rubbish....you need the latest titanium springs matched to a GSXR front end and brembo brakes..."

Sid Squid · 30-06-13, 10:58 PM

Quote:

Originally Posted by 21QUEST

Glad you answered before someone weighed in with "springs on the SV are utter rubbish....you need the latest titanium springs matched to a GSXR front end and brembo brakes..."

Well, all I can say in my defence is that I actually do know a little bit about them there motorbicycles

.

bat-kam · 01-07-13, 06:00 AM

The bike has done 25k miles and I wouldn't think that the fork oil have been changed. I am 14stone including gear.

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Biker Biggles · 01-07-13, 06:55 AM

You dont say how old the oil is but if its a few years then you will benefit from new oil.The stuff in there is probably like water with some smelly emulsion.

bat-kam · 01-07-13, 06:59 AM

Oh, sorry. The bike is 4 years old.
Any recommendations regarding oil?
Maybe rookie question but while changing oil should I replace the seals too? If so what make should i go for? My budget is limited as the newborn has joined our family

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yorkie_chris · 01-07-13, 07:54 AM

I wouldn't bother with hyperpro springs, get some Ktech linears instead. Not much in it price wise. Get 0.9 springs and some silkolene RSF10.

If the seals are still sealed, leave them alone.

Don't bother with the rear spring, the damper can't handle the stock spring so putting a heavier one on will make it worse.

bat-kam · 01-07-13, 07:07 PM

I am not sure that I have found springs that you were talking about. On their website the one I could find were 9.0N rather than 0.9.
http://www.k-tech.uk.com/product_detail.php?id=2228
Are those the right ones?

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MJC-DEV · 01-07-13, 07:43 PM

Yes, there the right ones, same number different units 0.9Kg = 9N. I also use the Silkolene RSF Pro 10W. Very good oil.

30-06-13, 10:53 AM	#1
bat-kam Member Join Date: May 2013 Location: Bournemouth Posts: 149	Bouncy ride - would new springs help? I know that this has been discussed several time but I am struggling to find it on the forum. Recently I have noticed that when going around the corner or a roundabout the front end of the bike jumps when going over an uneven surface. This is very unsettling as it makes the bike to stand upright or jump and unsettle me enough to slow right down. So I was thinking of upgrading the springs front and back to Hyperpro. Would this cure the issue? Are those springs any good? What oil should I use for the forks? 5 or 10 or 15W? Thanks for the advise in advance Kam Sent from my iPhone using Tapatalk

30-06-13, 08:58 PM	#2
Sid Squid No, I don't lend tools. Mega Poster Join Date: Jul 2003 Location: Skunk Works, Nth London Posts: 8,680	Re: Bouncy ride - would new springs help? The standard SV springs aren't known for being heavy, whether they're right for you depends on, primarily, your weight. If the suspension is 'bouncy' this usually signifies a lack of damping - how many miles has the fork oil done? __________________ If an SV650 has a flat tyre in the forest and no-one is there to blow it up, how long will it be 'til someone posts that the reg/rec is duff and the world will end unless a CBR unit is fitted? A little bit of knowledge = a dangerous thing. "a deathless anthem of nuclear-strength romantic angst"

01-07-13, 06:00 AM	#5
bat-kam Member Join Date: May 2013 Location: Bournemouth Posts: 149	Bouncy ride - would new springs help? The bike has done 25k miles and I wouldn't think that the fork oil have been changed. I am 14stone including gear. Sent from my iPhone using Tapatalk

01-07-13, 06:55 AM	#6
Biker Biggles Member Mega Poster Join Date: Jan 2005 Location: Barnet Herts Posts: 5,071	Re: Bouncy ride - would new springs help? You dont say how old the oil is but if its a few years then you will benefit from new oil.The stuff in there is probably like water with some smelly emulsion. __________________ On a clear day we stand there and look further than the ordinary eye can see.

01-07-13, 06:59 AM	#7
bat-kam Member Join Date: May 2013 Location: Bournemouth Posts: 149	Bouncy ride - would new springs help? Oh, sorry. The bike is 4 years old. Any recommendations regarding oil? Maybe rookie question but while changing oil should I replace the seals too? If so what make should i go for? My budget is limited as the newborn has joined our family Sent from my iPhone using Tapatalk

01-07-13, 07:54 AM	#8
yorkie_chris Noisy Git Mega Poster Join Date: Apr 2007 Location: Halifax/Leeds Posts: 26,645	Re: Bouncy ride - would new springs help? I wouldn't bother with hyperpro springs, get some Ktech linears instead. Not much in it price wise. Get 0.9 springs and some silkolene RSF10. If the seals are still sealed, leave them alone. Don't bother with the rear spring, the damper can't handle the stock spring so putting a heavier one on will make it worse. __________________ Currently Ex Biker Now rebuilding a 63' fishing trawler as a dive boat

01-07-13, 07:07 PM	#9
bat-kam Member Join Date: May 2013 Location: Bournemouth Posts: 149	Bouncy ride - would new springs help? I am not sure that I have found springs that you were talking about. On their website the one I could find were 9.0N rather than 0.9. http://www.k-tech.uk.com/product_detail.php?id=2228 Are those the right ones? Sent from my iPhone using Tapatalk

01-07-13, 07:43 PM	#10
MJC-DEV Member Join Date: Mar 2011 Location: Falmouth Posts: 621	Re: Bouncy ride - would new springs help? Yes, there the right ones, same number different units 0.9Kg = 9N. I also use the Silkolene RSF Pro 10W. Very good oil. __________________ 2006 SK6, wavy discs, 8.5N K-Tech springs, Debrix Emulators, Nitron Shock, Silkolene RSF Pro 10W, Eastern Beaver H4 Dual Headlight Relay Kit, Avon Storm Ultra 2 tyres, Ebay billet brake/clutch levers

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