Yamaha SR500 & SR400 Forum

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PostPosted: Mon Jun 15, 2015 8:29 am 
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Joined: Wed Jun 05, 2013 9:07 pm
Posts: 599
Location: South Jersey USA
Yes, you need the spacers.
Some bikes have 6 inch long spacers, different springs need different spacers.

I do not understand what the problem is, you do have to compress the springs to get the caps on.
Bike on center stand, old springs out, new springs in, 3/4 or 1 inch long spacers, and you need to push down firmly on the caps to get them to screw in.
If the pvc pipe is smaller in diameter then the springs it should work fine.


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PostPosted: Mon Jun 15, 2015 10:50 pm 
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Joined: Fri Mar 06, 2015 7:39 pm
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Location: Metro Atlanta, GA
It'll have to be 1/2" pipe, then. 3/4" is small enough to fit in the tubes but it gets stuck when trying to push it down far enough to start the fork cap threads.

As a result of yesterday's excitement, I ended up with pulled muscles in both arms and my back. The bike went forward, off the centerstand when I was working on it and in keeping it from hitting the ground and trying to put it back on the centerstand (without fork springs in) I ended up messing myself up.
So, I was laid up in bed today. Hopefully, I'll be able to work tomorrow.

I'm considering getting a motorcycle jack to keep the front end up while I'm working on the forks with the bike on the centerstand.

Then again, I may make one of those 4x8 and pipe types. I have the kiln dried oak timbers and iron pipe won't cost that much.

I'm just not sure how steady the bike would be on one of those floor jacks that goes under the frame and lifts both wheels off the floor.

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PostPosted: Tue Jun 16, 2015 12:03 pm 
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Joined: Wed Jun 05, 2013 9:07 pm
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Location: South Jersey USA
Hope you heal up well.
High force should not be needed for anything, and I always did one fork at a time.

I will have to check what pipe I used, I think I have some left over.
If its smaller then the springs, it must work.

I once had a flat on my 1969 Daytona, the one that I scored a new old stock in unopened box original paint gas tank for, and the footpeg twisted up, the bike fell over, kicked the jack stand out and the gas tank impacted the jack stand and punched a nice big hole in the gas tank.
Lucky it did not explode as well.
The gas tank was $200.00, and the seller also had matching fenders I did not buy, put the old tank back on and painted the entire bike.

I think I was rushed to get the flat fixed, and not thinking things through...


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PostPosted: Mon Jun 29, 2015 12:52 am 
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Joined: Fri Mar 06, 2015 7:39 pm
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Location: Metro Atlanta, GA
It appears to be 1/2" pipe. It's just a little smaller in OD than the spring.

I think I'll make spacers in 3/4", 1", and 1-1/4" lengths.
How does that sound?
Progressive says 3/4" long spacers, but they don't say what rider weight that is for.
Since I'm a bit of a fatass, i'm thinking I'll need more preload.

Once I get that sorted, how much can you increase the fork oil level without causing problems?

After I get the forks sorted for my weight and ridiing style, I'll need to adjust the shock spring preload a step at a time and see if I need stiffer shock springs or not.

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"Mulder, toads just fell from the sky."
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PostPosted: Tue Jun 30, 2015 8:07 am 
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Joined: Wed Jun 05, 2013 9:07 pm
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Location: South Jersey USA
I am around 200 pounds, and would go with 1 inch I think.
I used 3/4 inch but think I have a little bit too much sag.
Vast improvement though.

I have the back shocks on the 2nd softest setting and it seems great, I do not notice or think about the shocks which is great.

You sit on the bike and adjust them for 1/4 of total travel sag.


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