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 Post subject: Fork oil and air gap
PostPosted: March 22nd, 2014, 12:35 pm 
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Joined: January 26th, 2006, 4:47 pm
Posts: 247
Location: Cardiff , South Wales
Hi all.

While I'm saving up for the Ricor Intiminators, I'm going to change the oil in the forks on my '87 'Alp.

I've got Hagon progressive springs in the front anyway but I was wondering what all your thoughts were regarding the oil viscosity and air gap?

Thanks.

Neil.

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 Post subject: Re: Fork oil and air gap
PostPosted: March 22nd, 2014, 4:11 pm 
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Joined: January 23rd, 2006, 2:26 pm
Posts: 66
Location: V.I, BC, Canada
Hey Neil,

I don't really have answers for you but i've heard 5weight Amsoil is good fork oil to use.. I too am saving up for a set of Intiminators and as i'm gonna need to replace a leaky fork seal i'll need to get a set of those too..figured i'd get it done in 1 shot..or trip to local mechanics shop to have done..but when u do yours i'd be interested if u might happen to do a lil write up on how you did it..probably be a couple months til i get the parts together..

-Russ


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 Post subject: Re: Fork oil and air gap
PostPosted: March 22nd, 2014, 5:40 pm 
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Joined: February 4th, 2006, 6:26 pm
Posts: 1377
Location: Champaign, IL USA
Lot's of your question has to deal with your weight, sag and riding habits.

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AHRMA, CCS #72
'89 TA, 06 Ducati Sport 1000 Bella Boomer the race bike, '76 XS650 Farrah the race bike, '76 RD400 Evil Spawn the race bike, '97 Buell T-Bolt S2, ('97 Dyna-Conv RIP 8 June 2017, the bike my son was riding), '06 KLR 650 off road hooligan, and a '79 GS1000E (sold 25 March 2017 after 30 years of ownership), but ride the TA the most miles!


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 Post subject: Re: Fork oil and air gap
PostPosted: March 23rd, 2014, 2:32 am 
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Joined: January 26th, 2006, 4:47 pm
Posts: 247
Location: Cardiff , South Wales
Hi Gary and thanks for the reply.

All my riding is on paved roads,my weight is approximately 105 kilograms (around 230 pounds) and I have Hagon progressive forks springs fitted.

Thanks.

Neil.

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 Post subject: Re: Fork oil and air gap
PostPosted: March 26th, 2014, 4:11 am 
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Joined: May 31st, 2012, 12:18 pm
Posts: 16
Ive just upped my 650s fork oil from 5w to 10w put 500ml oil in each leg down 42mls and 20mm of spacers to preload the springs

Sent from my GT-I9195 using Tapatalk

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 Post subject: Re: Fork oil and air gap
PostPosted: March 26th, 2014, 2:54 pm 
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Joined: February 4th, 2006, 6:26 pm
Posts: 1377
Location: Champaign, IL USA
I outweigh you but still run 10w fork oil. Nothing but Progressive Springs and an adjustable preload. You want the front end to react. To heavy will cause it to "pack up". Wish I could address your question better. I'm thinking hard about the intimtators (sp).

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Garry Bird, YMRacing, Owner/Mgr.
AHRMA, CCS #72
'89 TA, 06 Ducati Sport 1000 Bella Boomer the race bike, '76 XS650 Farrah the race bike, '76 RD400 Evil Spawn the race bike, '97 Buell T-Bolt S2, ('97 Dyna-Conv RIP 8 June 2017, the bike my son was riding), '06 KLR 650 off road hooligan, and a '79 GS1000E (sold 25 March 2017 after 30 years of ownership), but ride the TA the most miles!


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 Post subject: Re: Fork oil and air gap
PostPosted: March 27th, 2014, 1:06 am 
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Joined: May 31st, 2012, 12:18 pm
Posts: 16
Forgot to say Neil only riding around our fine Welsh roads also these days and the forks feel fine still enough boing and not so much dive

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 Post subject: Re: Fork oil and air gap
PostPosted: March 27th, 2014, 1:35 pm 
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Joined: January 26th, 2006, 4:47 pm
Posts: 247
Location: Cardiff , South Wales
Hi Wide.

I think I've got the forks and air gap thing figured out now. The only ongoing issue with the bike which I can't get to the bottom of is a front end noise which is driving me up the wall.

If I rock the bike on the centre stand so the front wheel just bounces the floor, I get a "clonk" but not a metallic clonk, more like a "plastic" clonk which seems to be coming from the front mudguard area. Can't be the mudguard, still does it with the mudguard off along with the caliper.

As the bike is travelling over large bumps and undulations - nothing. Small, sharp bumps - clonk. It's not the forks, I've changed them for another set, still got the clonk. I can't see it being the head bearings as I've taken all possible slack out of them just shy of being overtight and causing low speed "roll".

If anyone has any ideas, shout them out!!


Where in Wales are you?

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 Post subject: Re: Fork oil and air gap
PostPosted: March 28th, 2014, 12:55 pm 
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Joined: May 31st, 2012, 12:18 pm
Posts: 16
Cardiff butty. In Rhiwbina

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