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Random13
Scooby Slapper



Joined: 12 May 2013
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PostPosted: 12:59 - 04 Jan 2015    Post subject: fork rebuild Reply with quote

Hello,

I am about to take my forks apart and rebuild them with a 15w fork oil from castrol. They are very soft hence the high grade oil.

I have the rear and front stand but when taking forks off , the front stand is no longer useful as there is no fork tube to hold it up and straight.

what do you people use to repair your bike and take the forks off ?
thanks
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mentalboy
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PostPosted: 13:08 - 04 Jan 2015    Post subject: Reply with quote

Two methods that I use, depending upon location.

First: If you have a wooden floor screw a pair of boat deck eyes either side of your rear wheel and use a strap to pull the rear wheel to the floor. The type shown are ideal for leaving in the floor and then they are ready any time you need them.

Second: If you have a workspace with open joists overhead, throw a line up and over the joist and hoist the front end in the air by fixing through any part near the handlebars that isn't going to be compromised by the fork removal.
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Random13
Scooby Slapper



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PostPosted: 14:01 - 04 Jan 2015    Post subject: Reply with quote

neither of those unfortunately .
how about using trolly jack from exhaust pipes.
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andym
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PostPosted: 14:42 - 04 Jan 2015    Post subject: Reply with quote

I've used a trolley jack most times.... even left the bike on the jack on the driveway overnight and still found it upright the next morning

Or if all else fails.... use whatever you can find to weigh the back of the bike down:

https://img.photobucket.com/albums/v320/andy36586/GPz750/balanced2.jpg
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andy_uk
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PostPosted: 14:59 - 04 Jan 2015    Post subject: Reply with quote

Axle stands...although having foot pegs that are at the front does help Wink
Quote:
https://cdn.bikechatforums.com/files/front_end.jpg

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Random13
Scooby Slapper



Joined: 12 May 2013
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PostPosted: 13:08 - 20 Jan 2015    Post subject: Reply with quote

when you raise the bike from exhaust does it not mess up the head and put pressure on the exhaust valves etc as you are potentially lifting the bike using them ?

silly question, where do I get a piece of wood which you can stick under the exhaust and lift it up if I was to do that or is there a metal piece of something one can buy ?

don't want to buy a massive wood piece from b&q for just a palm size wood
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Random13
Scooby Slapper



Joined: 12 May 2013
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PostPosted: 14:37 - 21 Jan 2015    Post subject: Reply with quote

anyone wanting to help a brother out Very Happy
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Fizzer Thou
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PostPosted: 15:29 - 21 Jan 2015    Post subject: Reply with quote

I have both stands for the front ends of my bikes.But for servicing the headrace bearings I use a plank of wood ubder the engine after removing the exhaust downpipes.This allows me to not only work on the front end,but also gives me an opportunity to clean the underside of the engine and the exhaust

https://i666.photobucket.com/albums/vv23/WiNot_Rhencullen/Workshop/Picture462.jpg

When draining out the fork legs of old oil,it is a good idea to pump the damper system when inverted and leave the old oil to drain out...overnight if possible Thumbs Up
If the old oil is particularly grotty,then I have used a very thin oil to flush out any debris in the fork,before pouring in fresh new stuff

https://i666.photobucket.com/albums/vv23/WiNot_Rhencullen/Workshop/Picture466.jpg

As the OP does not give a location or the bike that they are working on,I am not sure what else to suggest Rolling Eyes
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wr6133
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PostPosted: 15:43 - 21 Jan 2015    Post subject: Reply with quote

Is OP also Stranger12?????
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mentalboy
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PostPosted: 15:53 - 21 Jan 2015    Post subject: Reply with quote

wr6133 wrote:
Is OP also Stranger12?????


Different bikes would suggest otherwise, but I doubt if we're the only ones thinking WTF!!!
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Aff
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PostPosted: 15:57 - 21 Jan 2015    Post subject: Reply with quote

wr6133 wrote:
Is OP also Stranger12?????


This has been asked before, and I have always had my suspicions.

If they aren't the same person they should definitely meet up.

Maybe even record it and put it on TV.

Could call it The Undateables or something.
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Random13
Scooby Slapper



Joined: 12 May 2013
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PostPosted: 16:05 - 21 Jan 2015    Post subject: Reply with quote

Ha ??? What are you people on about?
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mentalboy
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PostPosted: 16:20 - 21 Jan 2015    Post subject: Reply with quote

Random13 wrote:
Ha ??? What are you people on about?


Search for 'Stranger12' and read some of their posts, then consider how odd it is that you and he ask the same kind of questions at the same time (have you got a long lost twin? Wink )
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wr6133
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PostPosted: 16:42 - 21 Jan 2015    Post subject: Reply with quote

I'm assuming they are one and the same. Same kind of questions, this one here never seems to mention the bike he is working on though. Also the names are similar enough that a real potato would do that thinking they are being so clever nobody would notice.
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andyscooter
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PostPosted: 16:47 - 21 Jan 2015    Post subject: Reply with quote

Randomly also had a sv
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Random13
Scooby Slapper



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PostPosted: 16:51 - 21 Jan 2015    Post subject: Reply with quote

Get a life !
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andyscooter
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PostPosted: 17:23 - 21 Jan 2015    Post subject: Reply with quote

I'm sure that last post mentioned a CBR before
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Kickstart
The Oracle



Joined: 04 Feb 2002
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PostPosted: 19:15 - 21 Jan 2015    Post subject: Re: fork rebuild Reply with quote

Random13 wrote:

I am about to take my forks apart and rebuild them with a 15w fork oil from castrol. They are very soft hence the high grade oil.


Why try to compensate for what are probably too soft fork springs by using thicker fork oil.

All the best

Keith
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kramdra
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PostPosted: 19:38 - 21 Jan 2015    Post subject: Reply with quote

Centre stand, if you dont have one, you can buy removable ones that attach onto various places (foot peg, swingarm pivot, engine bolts), this allows you to strip *everything* from the frame.

https://i1133.photobucket.com/albums/m593/Kramdra/bikestand/IMG_20140716_165938_zps8025a8cc.jpg

Abbastand is the expensive, well known option.
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Commuter_Tim
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PostPosted: 21:43 - 21 Jan 2015    Post subject: Re: fork rebuild Reply with quote

Kickstart wrote:
Random13 wrote:

I am about to take my forks apart and rebuild them with a 15w fork oil from castrol. They are very soft hence the high grade oil.


Why try to compensate for what are probably too soft fork springs by using thicker fork oil.

All the best

Keith


Sorry for the bother, but could you elaborate if only for educational purposes?
Were you implying that it wouldn't work, or that it could have other side effects?
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Aff
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PostPosted: 21:49 - 21 Jan 2015    Post subject: Re: fork rebuild Reply with quote

Commuter_Tim wrote:


Sorry for the bother, but could you elaborate if only for educational purposes?
Were you implying that it wouldn't work, or that it could have other side effects?


You would be effectively stiffening the suspension by changing how fast it's capable of reacting. Meaning it wont handle successive bumps/imperfections in the road as well.

As opposed to changing the spring rate so that the suspension can still travel and react to the road conditions but the spring force resisting the bike (or pushing the tyre into the road) is greater to compensate for your lardyness/riding style.
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Kickstart
The Oracle



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PostPosted: 23:56 - 21 Jan 2015    Post subject: Re: fork rebuild Reply with quote

Commuter_Tim wrote:

Sorry for the bother, but could you elaborate if only for educational purposes?
Were you implying that it wouldn't work, or that it could have other side effects?


Basically springs (including the air gap) determine how far the suspension moves, while the damping determines how fast the suspension moves.

Use thicker oil in the forks and the suspension will likely compress just as far when braking, etc, but react more slowly to bump (possibly making riding the bike feel like trying to use a pneumatic drill).

It is possible that a bikes handling issues are contributed to by insufficient / excessive damping, but a vague 'too soft' suggests the issue is springs.

When Charlotte bought the ZZR600 the handling was horrible. Really nasty. Eventually traced it down to too thick fork oil. Result felt like when you braked for a corner the suspension compressed, but when you came off the brakes the forks extended very slowly - so still massive compressed as you turned in.

All the best

Keith
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Old Thread Alert!

The last post was made 10 years, 180 days ago. Instead of replying here, would creating a new thread be more useful?
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