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Discussion Starter · #1 ·
so im online looking to buy a new rear shock since all i have is a vanilla. i see that i can get a brand new vanilla rc for like 80 bucks but its a 9 inch , i need an 7. something almost 8 .. i was thinking i could just put the spring from my 8 inch vanilla on the 9 inch and compress it onto my bike as long as i had the same amount of travel in the shock as it did before then would it work and if it did work would i be able to adjust it still..thanks for your help
 

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stinkykonaboy said:
so im online looking to buy a new rear shock since all i have is a vanilla. i see that i can get a brand new vanilla rc for like 80 bucks but its a 9 inch , i need an 7. something almost 8 .. i was thinking i could just put the spring from my 8 inch vanilla on the 9 inch and compress it onto my bike as long as i had the same amount of travel in the shock as it did before then would it work and if it did work would i be able to adjust it still..thanks for your help
you need a 7.785 probably. no, the 9" i2i will NOT work. it won't stay compressed once you put it on your bike, it'll just extend to it's regular size and ruin your bikes geometry
 

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YOU FOOLS! YOU WEAK MINDED FOOLS. YOU DON'T know the power of the dark side. :) Anyways there a very simple fix for that. I have a pro-delux and its like 1/2 ' larger than my 6 way swigger (length). Anyways if I compress the prodelux and screw it on the bike its all good. How do I do that its easy. Just take the compresion screw off the spring give it a little bit of slack enough for the amount of room for it to fit on the bike. so easy you can do it by hand. Again don't ask me, why my cortina has a 1/2 " longer stroke on the bike(originally) Then I got the 6way and its 1/2" shorter... But its all good.
 

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Max_winner1 said:
... But its all good.
exept that not all suspensions can be physically extended...snap crackle pop frames crispy....

a 1.125" increase in i to i means around 2.5" extension at the axle....hell the geometry would be unridable anyways.
 

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zedro said:
exept that not all suspensions can be physically extended...snap crackle pop frames crispy....

a 1.125" increase in i to i means around 2.5" extension at the axle....hell the geometry would be unridable anyways.
I guess my Dh-8 is unridable but still kicks some DH race ace. I persume every bike is different . Look at the norco Team DH its rear shock mount is adjustable on for BB height however it is desgined that way, another great idea by Norco.
 

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Discussion Starter · #8 ·
2nd attempt

you guys dont understand. i took my crappy vanilla apart and im able to compress the shock without the spring on it easly there is no way there is enough force to break my stinky and thats why i said i put the spring from the 8 inch so its easier to get on im not about to attempt the compress a a spring an inch and try to get it on the smaller spring wont push farther than the origanal since it is the original the only thing would be that the stroke on the shock is compressed a bit lol its not gonna break the bike or the bank for that matter
 

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stinkykonaboy said:
you guys dont understand.
no, i quite understand; i used to make travel upgrades for the Stinky and know the shock and suspension limitations.

What will happen is not matter how tight (or loose) you set the spring, you'll jack up the rear end by an inch in the Stinkies case, and will cause the swingarm to contact the swingarm. No matter what you'll have some kind of contact there, the actual force depending on how much you crank the spring up. Keeping the spring 'loose' wont stop the swingarm from banging the BB shell on extension.

you asked, this is the opinion. It wouldnt be a good thing, so the answer is no. Just because it can be done, doesnt mean it should.

Proceed as you wish.....
 

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Discussion Starter · #10 ·
i dont think it will jack up the suspension the linkage doesnt move past the size shock i have on it now it wont change the geometry at all
 

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Discussion Starter · #11 ·
the only thing that will change is the stroke on the shock wich is larger anyways becasue the shock is bigger if it has the same amount of stroke after beeing compressed it Will work the only thing i am worried about are the adjustments of the vanilla rc remember im not compressing the spring of the new shock im using the smaller older spring.there ill be a bit more force on the linkage plates but i doubt its more forcethan 8 foot to flat drops 20 pounds of added force pushing up on the plates top's so thats like me being 20 pounds fatter and i weigh 140 so it will live . am i looking at it wrong im not trying to be an ass i just like to think im smart
 

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OK I'll try to explain...
when your stock shock tops out it stops the linkage before the chainstay hits the bottom bracket(at least on my Stinky)

if you use the longer eye to eye the shock WILL NOT stop the linkage and the bottom bracket will hit the chain stay every time you top out(which is often)

try this..with the shock off the bike just let the rockers fall free and see where it hits(it will not just fall without hitting anything)...that will be where it hits if you do what you want to do......
 

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_rich_ said:
OK I'll try to explain...
when your stock shock tops out it stops the linkage before the chainstay hits the bottom bracket(at least on my Stinky)

if you use the longer eye to eye the shock WILL NOT stop the linkage and the bottom bracket will hit the chain stay every time you top out(which is often)

try this..with the shock off the bike just let the rockers fall free and see where it hits(it will not just fall without hitting anything)...that will be where it hits if you do what you want to do......
Agreed, and since this is occuring, I have a feeling that when you do top out and since its so often, that the spring will be moving around constantly, which in turn means that it wont always necessarily be seated back onto the collar correctly. Along with that the collar might even fall off, which means that when the shock compresses your coil is gonna fall off the shock all together if thats the angle you have it at. I definitely would not do that.
 

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zedro said:
exept that not all suspensions can be physically extended...snap crackle pop frames crispy....

a 1.125" increase in i to i means around 2.5" extension at the axle....hell the geometry would be unridable anyways.
Unrideable?!?!

Nothing is unrideable
 

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Here's a really simple answer:

Do not use a shock with different dimensions than the stock one unless you have taken the stock shock off the bike, and taken all proper measurements to insure that the swingarm/chainstay/seatstays will not be contacting the frame, and that you know about your suspension's properties to ensure that you will not get a funky falling rate with the different shock. That means that 95% of the population should not be using different dimension shocks. There's a reason the manufacturer used the dimensions they used.

Especially with swingarm designs like that, a lot of the time the progressive suspension properties will change when you change the shock dimensions.

And dude, figure out what periods and commas are for, then try inserting them into your posts. It would make them a whole lot more readable.

Yes, I'm grumpy today.
 

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stinkykonaboy said:
the only thing that will change is the stroke on the shock wich is larger anyways becasue the shock is bigger if it has the same amount of stroke after beeing compressed it Will work the only thing i am worried about are the adjustments of the vanilla rc remember im not compressing the spring of the new shock im using the smaller older spring.there ill be a bit more force on the linkage plates but i doubt its more forcethan 8 foot to flat drops 20 pounds of added force pushing up on the plates top's so thats like me being 20 pounds fatter and i weigh 140 so it will live . am i looking at it wrong im not trying to be an ass i just like to think im smart
The Internet Corp of Armchair Engineers is in effect here.... Someone warn Kona's warranty department..

Brian
 

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stinkykonaboy said:
i dont think it will jack up the suspension the linkage doesnt move past the size shock i have on it now it wont change the geometry at all
as i said, i have modified Stinkies, altered their plates and used different sized shocks, i know what i'm talking about. I've also designed and built bikes, so i know how suspension systems work.

but if you're so sure of yourself, why ask the question? go ahead and do it if you dont want to listen to anyone.
 

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Max_winner1 said:
I guess my Dh-8 is unridable but still kicks some DH race ace. I persume every bike is different . Look at the norco Team DH its rear shock mount is adjustable on for BB height however it is desgined that way, another great idea by Norco.
if you jack it up too much, it'll be unridable, it depens on what shock for what bike. Theres plenty of bikes where small changes are ok, but these arent huge leaps in shock sizing.

My Stinky mods jacked up the rear end, but also required longer forks and smaller rear wheels depending. But making a stock 69 degree HA bike into a 72deg for example, is unridable IMO.
 

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some people don't realize that the ability to work a wrench doesn't equal the ability to design suspensions.

zedro, I'm not talking about you! ;)
 
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