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Discussion Starter · #1 ·
I just recently got a v-10 size medium with a DHX 5.0 which shipped with a 400lb spring. I weigh between 210 and 220 geared up. I knew the stock spring wouldn't be up to the duty, so I ordered a 500lb spring and I really don't notice much difference. I have a friend telling me I need a 700 and have just ordered it. Is anyone else out there running such a heavy spring?
 

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.thumper. said:
I just recently got a v-10 size medium with a DHX 5.0 which shipped with a 400lb spring. I weigh between 210 and 220 geared up. I knew the stock spring wouldn't be up to the duty, so I ordered a 500lb spring and I really don't notice much difference. I have a friend telling me I need a 700 and have just ordered it. Is anyone else out there running such a heavy spring?
Something ain't right with the setup, and you'll have zero small bump sensitivity with such a stiff spring, will affect handling. I'm running the same shock and 2.80 stroke 400 spring on a Bullit and am curious to hear the feedback here.

Cheers,

Dave
 

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Discussion Starter · #3 ·
mtbdirteater said:
Something ain't right with the setup, and you'll have zero small bump sensitivity with such a stiff spring, will affect handling. I'm running the same shock and 2.80 stroke 400 spring on a Bullit and am curious to hear the feedback here.

Cheers,

Dave
I don't agree with you on the setup not being right and the small-bump sensitivity deal. Actually, quite the opposite, I think. For the shock to be set up correctly, there should be one to two turns of preload on the spring to give you the correct sag (4" in this case). With the 500lb shock, I have probably 8 or 9 turns and still have probably about 4.5" of sag. Preloading this spring so much is similar to having a heavier rate spring on there - so once I get the correct spring on there with the correct preload, it should work even better. No small bump sensitivity lost.

You have the 400 lb spring on your bullit, but there is a difference in leverage ratios between my bike and yours, I would assume and I also weigh more than you.
 

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.thumper. said:
I don't agree with you on the setup not being right and the small-bump sensitivity deal. Actually, quite the opposite, I think. For the shock to be set up correctly, there should be one to two turns of preload on the spring to give you the correct sag (4" in this case). With the 500lb shock, I have probably 8 or 9 turns and still have probably about 4.5" of sag. Preloading this spring so much is similar to having a heavier rate spring on there - so once I get the correct spring on there with the correct preload, it should work even better. No small bump sensitivity lost.

You have the 400 lb spring on your bullit, but there is a difference in leverage ratios between my bike and yours, I would assume and I also weigh more than you.
When I say you have something wrong on your setup, I mean something is wrong why you can't get your sag dialed without so much preload being 220lbs with a 500 spring. Do you have a 2.80 stroke spring? I assume so, that's weird then. Yeah, Fox says no more than two turns on the coil preload, so something is not right. I understand what you are saying by preloading this spring so much is similar to having a heavier rate spring on there, being the opposite on small bump sensitivity. Yeah, a heavier coil is better than a lighter one with more preload is what I think we are both are saying. Bummer on the sag issue there, good luck with that.

You have a different bike, but the same shock, and V-10s, Bullits and VP Frees use the same stroke coil, and shock setup is similar, so I'm interested in that to whatever degree it may be useful, if for no other reason to tell me that a V-10 with a DHX-5 is hard to set up correct sag if you weigh more than I do. I hope you get the feedback here to solve the problem though.

Cheers,

Dave
 

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Discussion Starter · #5 ·
mtbdirteater said:
When I say you have something wrong on your setup, I mean something is wrong why you can't get your sag dialed without so much preload being 220lbs with a 500 spring. Do you have a 2.80 stroke spring? I assume so, that's weird then. Yeah, Fox says no more than two turns on the coil preload, so something is not right. I understand what you are saying by preloading this spring so much is similar to having a heavier rate spring on there, being the opposite on small bump sensitivity. Yeah, a heavier coil is better than a lighter one with more preload is what I think we are both are saying. Bummer on the sag issue there, good luck with that.

You have a different bike, but the same shock, and V-10s, Bullits and VP Frees use the same stroke coil, and shock setup is similar, so I'm interested in that to whatever degree it may be useful, if for no other reason to tell me that a V-10 with a DHX-5 is hard to set up correct sag if you weigh more than I do. I hope you get the feedback here to solve the problem though.

Cheers,

Dave
Yeah - this is exactly why I am posting this thread. I have been greatly surprised that such a heavy weight spring is required. From my understanding, both B-Box and Matt Thompson are rocking the v-10 / DHX / 700lb spring setup. B-Box's DHX and 40 were set up by the Fox suspension guys specially for him at the Angel Fire WC stop.
 

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.thumper. said:
Yeah - this is exactly why I am posting this thread. I have been greatly surprised that such a heavy weight spring is required. From my understanding, both B-Box and Matt Thompson are rocking the v-10 / DHX / 700lb spring setup. B-Box's DHX and 40 were set up by the Fox suspension guys specially for him at the Angel Fire WC stop.
Cool. I'm curious to know what weight rider on this shock on what bike they expect to be matched with what spring, because the shock manual is fairly meaningless there, and you sure couldn't tell what they may be thinking from what coils they ship on what frames.

Cheers,

Dave
 

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Discussion Starter · #7 ·
mtbdirteater said:
Cool. I'm curious to know what weight rider on this shock on what bike they expect to be matched with what spring, because the shock manual is fairly meaningless there, and you sure couldn't tell what they may be thinking from what coils they ship on what frames.

Cheers,

Dave
The manual for the bike says that at my weight, I should be on a 500# spring. That couldn't be further from the truth.
 

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.thumper. said:
The manual for the bike says that at my weight, I should be on a 500# spring. That couldn't be further from the truth.
I read that manual too, pretty funny, eh? I'd like to know what the Fox suspension guys that are setting up race bikes actually do, 'cause it can't be what's in this manual! Or in the Santa Cruz shock tuning pamphlet.

If you're around 220 with too much sag and I'm 185 with gear on and too little sag with the same shock, looks like we should both be around 200 for this Fox manual's numbers to be of any use. It's easier to get a different spring though! Geez, my Manitou 4-way had 8mm of preload, and easy to set up correctly compared to this DHX5.

Hope you get the feedback you need here.
 
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