Changing Fork Oil Viscosity

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windmill john
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Re: Changing Fork Oil Viscosity

Postby windmill john » Tue Oct 20, 2020 12:08 pm

They can travel at 25 to 30 MPH and have developed no concept of roads or motor vehicles
Having seen the way some people drive through the New Forest, no wonder animals get hit.
I've seen some drivers in other areas take no action at all to avoid hitting an animal... And... before someone says it's best to hit the animalthan to cause an accident, I don't want to hear it; never held to that belief.

Also animals don't have Charlie Said, Green Cross Code, adverts, parents telling them, parents dragging them back at the last minute, teachers telling them, films, TV etc.

Many animal deaths can be avoided, but unfortunately sometimes it is too late to avoid.
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Re: Changing Fork Oil Viscosity

Postby Rob Frankhamr » Tue Oct 20, 2020 1:04 pm

I would clarify that I was in a Mitsubishi Outlander when I went through Australia. I would rather have been on a bike but three adults and a 15 year old Princess with a months worth of luggage made that a tad impractical.. Hope to do it properly one day :grin:

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Re: Changing Fork Oil Viscosity

Postby Rob Frankhamr » Tue Oct 20, 2020 1:14 pm

They can travel at 25 to 30 MPH and have developed no concept of roads or motor vehicles
Having seen the way some people drive through the New Forest, no wonder animals get hit.
I've seen some drivers in other areas take no action at all to avoid hitting an animal... And... before someone says it's best to hit the animalthan to cause an accident, I don't want to hear it; never held to that belief.

Also animals don't have Charlie Said, Green Cross Code, adverts, parents telling them, parents dragging them back at the last minute, teachers telling them, films, TV etc.

Many animal deaths can be avoided, but unfortunately sometimes it is too late to avoid.
Anything bigger than a cat can do serious damage to a vehicle... anything bigger than a Muntjac is likley to do lot of damage and anything bigger than a Roe Deer will probably write it off. On the other hand, swerving violently to avoid a small animal is likely to do a lot of damage as well. As with anything else, theres a balance. I will always try to avoid killing anything if I can but not to the extent of putting my own life or anyone elses in danger... that, of course, assumes that there is sufficient time to react in the first place.

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Re: Changing Fork Oil Viscosity

Postby Mjolinor » Tue Oct 20, 2020 1:16 pm

It can all be avoided by riding at an appropriate speed of course. :)

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Re: Changing Fork Oil Viscosity

Postby Rob Frankhamr » Tue Oct 20, 2020 1:19 pm

It can all be avoided by riding at an appropriate speed of course. :)
Even more so by not using a vehicle at all. Up here, an appropriate speed to avoid any possibility of collision with wildlife would be about 5 MPH... and then they'd run into the side of the vehicle sometimes.

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Re: Changing Fork Oil Viscosity

Postby windmill john » Tue Oct 20, 2020 2:19 pm

My wife closed the A27 one evening. Swerved to miss a fox, over steered, spun car, wrote off three cars.
We've talked about it a number of times and she would still swerve.
I think as mentioned, it's a natural reaction to something suddenly appearing in front of you.

The police had no issue, no dangerous driving etc. and passenger in one of the other cars saw the fox.

And she wasn't using fork oil...
http://www.kittos.co.uk
Best roads: 623 Burgos to Santander. A back road to Metz; can't remember which!
Ari, my 500 Classic
Bumble, my 700 Transalp.
Gupta, my 350 Bullet.
Sold my Airheads, what an idiot.
Too many bikes have come and gone, trying to be sensible now!

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Re: Changing Fork Oil Viscosity

Postby daz » Thu Oct 22, 2020 12:31 pm

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Re: Changing Fork Oil Viscosity

Postby Tincan3 » Thu Oct 22, 2020 1:53 pm

[continuing off-topic . . . . ]
We have the brown variety - unlit of course - on our roads.
One evening in the dark I was on my small Honda CD175. I saw the cow ahead of me but not the one recessed in the ditch to the right, rear end towards me. It decided to cross the road just before me, so I was presented with a side of beef in my headlight (they are beef cattle). In that high speed, instant way, I realised head-on impact would definitely bend the forks so, at the last moment, I swung the handlebars sideways to impact bar end on. Next thing, I was somersaulting down a bank into the brambles. Coming to a stop, I jumped up and ran up expecting to see a prostrate cow heaving on the road.
There was no sign of the cow and the fallen bike was undamaged - strategy worked!

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Re: Changing Fork Oil Viscosity

Postby CharlieVictor » Sat Oct 24, 2020 9:35 am

It can all be avoided by riding at an appropriate speed of course. :)
Absolutely.

I have never killed a living animal in 40 years of driving motor vehicles, including G-Wagens in the military. Yet a friend of mine did kill a baby moose once.Or should I say, the baby moose killed itself against the car. My buddy was patrolling his area of rural country in the Halton Hills of Ontario at night when a herd crossed the road ahead as well as behind his car. A moose just hit the passenger door at full speed and broke its neck.

When did the conversation switch from fork oil to roadkills? :???:
Last edited by CharlieVictor on Sat Oct 24, 2020 11:23 am, edited 1 time in total.
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Re: Changing Fork Oil Viscosity

Postby Rob Frankhamr » Sat Oct 24, 2020 10:13 am


Absolutely.

I have never killed a living animal in 40 years of driving motor vehicles, including G-Wagens in the military.


What, not even a fly or a mosquito?

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Re: Changing Fork Oil Viscosity

Postby windmill john » Sat Oct 24, 2020 10:28 am

I’ve killed two birds and a rabbit. I remember the total because every time I think about it, it still bothers/upsets me.

As a consolation, we did rescue a tawny owl off the road and a few wood pigeons at different times.
And a sheep that had fallen into a water filled stream.
http://www.kittos.co.uk
Best roads: 623 Burgos to Santander. A back road to Metz; can't remember which!
Ari, my 500 Classic
Bumble, my 700 Transalp.
Gupta, my 350 Bullet.
Sold my Airheads, what an idiot.
Too many bikes have come and gone, trying to be sensible now!

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Re: Changing Fork Oil Viscosity

Postby Mjolinor » Sat Oct 24, 2020 11:14 am



When did the conversation switch from fork oil to roadkills? :???:
Plenty more scope for diversity yet.

Oh man, how jealous am I. I have been trying to find a G wagen in my price range all my life.

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Re: Changing Fork Oil Viscosity

Postby CharlieVictor » Sat Oct 24, 2020 11:24 am


Absolutely.

I have never killed a living animal in 40 years of driving motor vehicles, including G-Wagens in the military.


What, not even a fly or a mosquito?

Rob
Nope. They had clearly committed suicide by car :grin:
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Re: Changing Fork Oil Viscosity

Postby Mjolinor » Sat Oct 24, 2020 11:43 am

I once got a stag beetle committing suicide by splatting on my eyeball. The carapace shattered and for days I had a lump of it stuck in there.

Most unsatisfactory.

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Re: Changing Fork Oil Viscosity

Postby SteveD » Sat Oct 24, 2020 12:02 pm

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Cheers, Steve.
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Re: Changing Fork Oil Viscosity

Postby Mjolinor » Sat Oct 24, 2020 12:12 pm

OMG, a squished velocoraptor at the side of the road.

More to avoid in Australia than I thought.

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Re: Changing Fork Oil Viscosity

Postby Rob Frankhamr » Sat Oct 24, 2020 12:26 pm

Velociraptor perhaps??? :lol:

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Re: Changing Fork Oil Viscosity

Postby Mjolinor » Sat Oct 24, 2020 12:57 pm

Velociraptor perhaps??? :lol:

Rob
Hmmph.

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Re: Changing Fork Oil Viscosity

Postby CharlieVictor » Sat Nov 28, 2020 3:31 pm

Back to the subject at hand if you don't mind...

Not had a chance to get around doing the fork seals, but I wanted to check if a lot of oil had seeped away.. Well, it looks like the fork's top nuts need a special BMW tool to be unscrewed !! Which I do not have of course... So much for an oil check....

Anyone unscrewed them with a flat spanner? 28 or 30mm I'd say.
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Re: Changing Fork Oil Viscosity

Postby Rob Frankhamr » Sat Nov 28, 2020 6:44 pm

There is a special spanner supplied by BMW. One was originally supplied with the vehicle toolkit...
Suspension spanner.jpg
This is a 27mm box spanner for the swing arm nuts and a 36mm hex flat ring spanner for the steering stem and suspension leg nuts. Not cheap and not really very effecitve. The best solution(s) if you're going to keep the bike are to source a 36mm socket and grind the leading edge to do away with chamfering you often get there and increase the contact area between socket and nut.

By the same token, a better tool for the swing arm nuts is a 27mm hex socket with the wall thickness at the business end thinned so you can get it into the recess in the swing arm.

The BMW tool is quite expensive, around £25.00 and really isn't man enough to be used as a workshop tool. It's useful to have in the toolkit though.

Rob
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Re: Changing Fork Oil Viscosity

Postby CharlieVictor » Sat Nov 28, 2020 7:12 pm

Thanks Rob. Unfortunately my 78 S had lost her toolkit (and her headlight fairing) a while back when I brought her home in 2015. :sad:

I understand it's the pin wrench that I need to remove the fork's top filling caps. This:

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Re: Changing Fork Oil Viscosity

Postby Rob Frankhamr » Sun Nov 29, 2020 10:35 am

Available from Motorworks. Not cheap at around £15.00 + p&p but not a bad investment. The other end of the spanner is for adjusting the steering head bearings and is designed so that it can be used with the upper yoke in place... Perhaps a letter to père Noël.

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Re: Changing Fork Oil Viscosity

Postby CharlieVictor » Sun Nov 29, 2020 11:16 am

Available from Motorworks. Not cheap at around £15.00 + p&p but not a bad investment. The other end of the spanner is for adjusting the steering head bearings and is designed so that it can be used with the upper yoke in place... Perhaps a letter to père Noël.

Rob
Thanks Rob!
I'd say a very good investment indeed... Thanks a mil... Père Noël est un excellent "tip" aussi ! Je n'y avais pas pensé ! :grin:
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