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post #1 of 7 (permalink) Old 09-10-2009, 05:24 PM Thread Starter
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Shock service

Front end was spongy, could bottom it by hand. Braking hard on a bumpy road, the front would often skid, as the shocks were bottomed. Not good!

Bike is '06 with 44k of hard riding. I spend a lot of time on goat trails (bumpy ultratwisty goodness), so the shocks have seen a lot of bouncing. Time to get them serviced.

Took it to a local shop, Evolution Suspension. The stock springs are 0.5 kg/mm, with 10W fork oil. They replaced the springs with ones much stiffer, 0.9 kg/mm and 20W fork oil.

On the rear shocks, I used to run preload 3 with 0 psi. Bumped it to preload 4, 10 psi (will probably jump to 20 psi soon).

Haven't taken it to twisty roads yet, but the handling does seem different. I'll post up the twisty results this weekend.

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post #2 of 7 (permalink) Old 09-10-2009, 06:36 PM
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It has always been reccomended to replace the front fork springs with Progressive springs.( which are stiffer, actually "progressive" and a bit longer)

Most use 15w fork oil however.

I always ran about 25 lbs of air in the rear, even though I weigh around 150 , as on occasion my wife rode with me. Later I got the chance to dump the stock rears for a set of Progessive 412's....a HUGE improvement.

For a rider under 200 lbs the bike is sprung too soft in front and too hard in back...so I am sure you will find some definite improvements in the handliing dept with your changes.........

The only other addition you could make is a fork brace...which does help in those "twistys" .....

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post #3 of 7 (permalink) Old 09-10-2009, 08:43 PM
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Hey KM, I'm about 150-155lbs also. The front seems a little too soft and the rear to hard also. I've got the preload set at 2 w/o air. Would just switching to progressives in the front with 15w fork oil help or should I also add to the rear?

I'm always by myself as I'm not confident enough in my riding skills yet to ride with the wife. Only have 6 months and 2100 miles under my belt. Don't have bags yet, but plan to get them soon.


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post #4 of 7 (permalink) Old 09-10-2009, 09:33 PM
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Quote:
Originally Posted by VN750_DawgsFan View Post
Hey KM, I'm about 150-155lbs also. The front seems a little too soft and the rear to hard also. I've got the preload set at 2 w/o air. Would just switching to progressives in the front with 15w fork oil help or should I also add to the rear?
Well the progressive springs up front help alot no matter what you weigh. I think it was voted one of the best bang for the buck improvements you could make to the bike. A set is about 65 bucks.

Now the rear is where the cost explodes. I think the lowest price shock they make is around $250.00 a set now. I have heard of others buying different shocks off ebay that worked. Or even finding some at a local junk yard off a different bike.

I had just the front fork springs installed (along with the additon of a fork brace) for awhile before getting the rear shocks, and they do make a big difference. The fork brace likely will not give the average rider much noticable improvement unless they tend to ride hard.

The addition of the rear shocks made my bike about as perfect as it was likely going to get handling and ride wise.

But I would reccomned to everyone that has not done it to install the progressive fork springs....as for the rear, it is kind of hard justifying spending 200-300 bucks for a set of shocks, but if you find a good deal, just about ANYTHING is better than the stock units.


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post #5 of 7 (permalink) Old 09-11-2009, 10:19 AM
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So KM, would the following be the right ones? You didn't give a model# for the fork springs. And thanks for the info!!

http://www.amazon.com/gp/product/B00...&creative=9325

http://www.amazon.com/gp/product/B00...&creative=9325

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post #6 of 7 (permalink) Old 09-11-2009, 03:59 PM
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The rear shocks will work fine, but the proper front springs are:
http://tinyurl.com/lkd92m


Part # 11-1128 . Took a minute to find it in the Verses...which has a bit of info you might wish to look at:

https://www.vn750.com/forum/showthread.php?t=1116

As noted in the install texts , the springs are about 2 inches longer than the stock ones, so you need to cut the stock "tube" spacers down around 7 inches or use the suggested pvc pipe and make new spacers.


The photos from my install that could not be imbedded in the text of my write up are here:
http://tinyurl.com/39xry9



KM

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post #7 of 7 (permalink) Old 09-22-2009, 03:49 PM
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Hey thanks KM! I've got that tucked away in my notes for a todo next year.

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