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Bos Idylle Rare Setup tips?

richgardiner

Monkey
Aug 19, 2008
224
26
Hey everyone,
After not really touching the settings since i rode these forks in whistler 2011 I've decided its time to change them up a bit and play around with them a little bit, and im going to go up a spring rate (yellow is the harder one than the red and orange yeah?) and let off a bit of the compression.

The bos manual continues to confuse me and they havent changed it for years annoyingly , can I just make sure i've got this right?!

LSC - Clockwise = More Compression Damping
HSC - Clockwise = More Compression Damping (although it appears to loosen but apparently this nut has a reverse thread?)
Rebound - Clockwise = Slower

Is that correct?

I'd love to hear some of your setups, I race, so I'd be in favour of a faster setup over a more comfortable one.
Thanks!
Rich
 

al-irl

Turbo Monkey
Dec 9, 2004
1,086
0
A, A
i have them and to be honest i tried loads of different settings and kept going back to the reccomended bar an extra click or two of LSC to stop them diving. Ive a mate with a set and he agrees with me that the reccomended settings are spot on and no need to change them for the sake of it. Im running the heavy yellow spring aswell
 

Mo(n)arch

Turbo Monkey
Dec 27, 2010
4,441
1,422
Italy/south Tyrol
As a few monkeys (including me) out there are on Idylle RaRe airs and Stoys or Voids right now, we should use this thread as a BOS tuning and servicing thread.



I am currently riding a YT TuEs2.0 with RaRe air and a Stoy rare.
Fork is set up with 180psi (about 20% SAG standing).
HS comp:-19 clicks
LS comp: -10 clicks
rebound: -14 clicks

All clicks are from fully closed.
The setting of the fork isn't perfect yet, but it's getting close. I used about 18,5 - 19cm of the travel until now, so I'm thinking of going a bit back with HS compression, because I don't want to run more SAG.

The stock rebound settings were way too fast for my liking, especially on the shock. I like the bike more planted and therefor the rebound on the slower side.

Rear shock settings for the record:
HS comp: -17 clicks
LS comp: -12 clicks
rebound: -7 clicks
SAG standing with gear is exactly 30%

Are some guys out there with some tips regarding the fork setup? I used to ride a 888evo with 15-20% SAG with a fair amount of compression damping.and relatively slow rebound damping.

The rear is fine right now.
 

supercow

Monkey
Feb 18, 2009
969
128
Rich, you are correct, the HSC on the fork is reverse threaded, so when you "add compression" the knob turns out. This is not the case with the Stoy or VOID.

Another point - you will notice both the LSC and HSC move when adjusting the HSC - don't worry about it, it's not changing the LSC.

At the moment my RaRe air fork is entirely stock.
My VOID is stock for the Makulu tune, bar 3 clicks of rebound (slower)

And while we are on the topic of random tips:
Some RaRe air forks make a clicking sound when compressed and rebounds almost as if there's spring rattle. There is a piston in the hydraulic bumpstop for support. Supposedly when you ride it disappear cause there is oil between the two pieces.

Some riders have however fed back that the clicking doesn't go away - BOS still states that this is entirely normal after inspecting the fork in question.

If anyone knows how to make a VOID / Stoy stop with the "Tweeptweeptweepcheepcheepcheep" I would pay you cashmoney.
 
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Mr Nug

Monkey
Aug 26, 2007
138
1
UK
I am currently riding a YT TuEs2.0 with RaRe air and a Stoy rare.
Fork is set up with 180psi (about 20% SAG standing).
How much do you weigh? The Air is different from the old coil sprung Idylle in that they recommend that you run 60-80mm of sag. I didn't get a manual with mine to begin with and tried to set them up with 20% sag like my old forks were and due to the nature of the negative spring had to pump them up incredibly hard. I ended up emailing them and they sent me the below:

"
Whatever your weight, the air pressure must stay between 155 and 205 Psi
Depending on the air pressure, the fork will be compressed while you get on your bike. The
travel used (the SAG), has to be adjusted to the riding; The SAG required must be between 60
an 80 mm. We strongly advice to adjust the air pressure by taking into consideration your
weight (following the table) and the sag you want to obtain.
"

air rare.PNG

I'm running mine almost stock - 30% sag, just two more clicks of LSC, 1 click rebound slower and 1 click more HSC.
 

Mo(n)arch

Turbo Monkey
Dec 27, 2010
4,441
1,422
Italy/south Tyrol
I'm about 90kg with riding gear. According the list above I am already "undersprung" but still on about 20% SAG.
60mm - 80mm SAG equals 30% - 40%. That would pretty much ruin the geo of your bike, wouldn't it?
Maybe therefor the stock comp settings were a bit over the top for the amount of SAG I'm running...
 
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Mo(n)arch

Turbo Monkey
Dec 27, 2010
4,441
1,422
Italy/south Tyrol
And while we are on the topic of random tips:
Some RaRe air forks make a clicking sound when compressed and rebounds almost as if there's spring rattle. There is a piston in the hydraulic bumpstop for support. Supposedly when you ride it disappear cause there is oil between the two pieces.
According to a german forum there was also a rattling noise caused by the negative chamber not filled correctly.
Maybe this helps too.
 

Udi

RM Chief Ornithologist
Mar 14, 2005
4,915
1,200
60mm - 80mm SAG equals 30% - 40%. That would pretty much ruin the geo of your bike, wouldn't it?
I've found BOS's sag recommendations to be ridiculous and would tend to ignore those values unless you want a bicycle that rides like a boat.

They also suggest very low spring rates and high sag percentages on their rear shock chart (including suggestions which net ~45% sag on 8" travel bikes), which in practice I've found makes for very poor dynamic geometry and stability.

Stick to 15-25% front sag and 25-35% rear sag for best results.
 

Mr Nug

Monkey
Aug 26, 2007
138
1
UK
I'm about 90kg with riding gear. According the list above I am already "undersprung" but still on about 20% SAG.
60mm - 80mm SAG equals 30% - 40%. That would pretty much ruin the geo of your bike, wouldn't it?
Maybe therefor the stock comp settings were a bit over the top for the amount of SAG I'm running...
Hmmm I tried to get 20% sag but even after pumping the air spring to over 220psi it still sagged to 25-30%. I took that to be a characteristic of the negative spring. The end result running it at that pressure was a fork that didn't get past 6inches of travel.

In its current setup, the fork seems to be fine. Doesn't sit that deep in its travel and have got pretty close to bottom out once or twice. I think the rebound setting is key - has to be quite fast so the fork doesn't pack down. I used to like my rebound really slow as well but have been slowly speeding it up over the last few rides (only been out on it 3 times though tbh).

I mostly ride steep techy stuff btw so there's usually a lot of weight on the front end...
 

richgardiner

Monkey
Aug 19, 2008
224
26
Mine's been twisted since last July, tried to get a new set of lowers but BOS were useless! Might have more luck now they have a new UK distributor but there's no way I can afford it, I'll have to just deal with twisting them back to straight every few rides!
 

N2fire

Chimp
Feb 13, 2012
6
0
Does anyone have any experience with the Void? I'm currently running a db air on my V-10 but have heard the db air isn't truly suited to Dh riding where as the void is. Any thoughts? Thanks in advance
 

supercow

Monkey
Feb 18, 2009
969
128
Does anyone have any experience with the Void? I'm currently running a db air on my V-10 but have heard the db air isn't truly suited to Dh riding where as the void is. Any thoughts? Thanks in advance
Rides like the stoy, just lighter with infinite spring rate adjustment for when you get a bit fat over winter :)
 

Tomasis

Monkey
Feb 26, 2003
681
0
Scotland
Mine's been twisted since last July, tried to get a new set of lowers but BOS were useless! Might have more luck now they have a new UK distributor but there's no way I can afford it, I'll have to just deal with twisting them back to straight every few rides!
mad elkes? I had good experience with them. They checked new products before they shipped to me. Found a fault and fixed. :up:
 

Mo(n)arch

Turbo Monkey
Dec 27, 2010
4,441
1,422
Italy/south Tyrol
I've found BOS's sag recommendations to be ridiculous and would tend to ignore those values unless you want a bicycle that rides like a boat.

They also suggest very low spring rates and high sag percentages on their rear shock chart (including suggestions which net ~45% sag on 8" travel bikes), which in practice I've found makes for very poor dynamic geometry and stability.

Stick to 15-25% front sag and 25-35% rear sag for best results.
This.
Though, in the manuals on their website they recommend 15 - 25% for the coil Idylle and a max of 30 - 40% for the Stoy.

I noticed also, that the air version needs way less compression damping (high and lowspeed) then the coil version to compensate the progressivness.
 
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Tomasis

Monkey
Feb 26, 2003
681
0
Scotland
Alright, UK and Ireland. It got covered up my options to send stuffs for service.

Enduro seals wont scratch stanchions?


Speaking of tuning BOS suspension, are Deville/Vipr similar to DH (stoy, idylle) in Construction?

At the moment I stick with stock settings recommended by BOS. As 9 clicks rebound (faster) from the middle in rear chock. Bos has 30 clicks and I start from 15.

I Think to add +2 lsc for fork to prevent diving. For HSC, I will try when I got proper track to test out.

Does it make sense to get faster rebound in the fork when rear shock got 9 clicks?

Interesting that my experience is similar to al-irl's.
 
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Killingtonvt

Monkey
Sep 19, 2005
134
2
Bellingham, WA
I have been running my Jedi with a Stoy RaRe/Idylle RaRe set up this Spring. I have to say I am pretty BLOWN away with the suspension. We had the Stoy's set up for our Jedi's and BOS nailed the tune. Haven't had to make a single adjustment to the shock. I'm running slightly higher than recommended air pressure and added two clicks of rebound.

Based on our riding experiences and the fact that BOS now has services centers in the US, we, (Canfield Brothers), will now be offering BOS packages with our bikes.
 

MrPlow

Monkey
Sep 9, 2004
628
0
Toowoomba Queensland
Enduro Seals produce a rebuild kit for the Idylle:

http://www.enduroforkseals.com/id382.html
Not sure why you would stray away from the factory seals though. Olivier Bossard has to be one of the most anal/ perfectionist (in a good way) people I have ever met. He would have spent ages developing the seals. And now you have service centres that have to stock this stuff. You don't need to pay for upgraded seals etc with BOS IMO. You have already paid for the best.
Yes, I am the BOS Aussie Distro, rose coloured glasses.
 

iRider

Turbo Monkey
Apr 5, 2008
5,648
3,089
Yes, I am the BOS Aussie Distro, rose coloured glasses.
Good for you. So you can buy seals from BOS I assume? Here in Yurp they want you to send in your fork for service and don't sell spares anymore. Not only is the service overpriced IMO but then you also get crap craftsmanship. A fork coming back with scratched stanchions (clamping it w/o protecting the stanchion) and then claiming they were in there already leaves a really bad taste in my mouth. Not speaking of the fact that it was crazy trying to get a softer spring.
From a performance point of view I like BOS, but with this kind of service (or better: lack of service) I won't buy anything BOS again anytime soon. And because I can't get seals from BOS I will have to buy the Enduros next time I need to replace them I guess.
 

spes

Chimp
Jun 11, 2008
57
6
I got my Idylle Rare and Stoy RaRe and been riding them a little. Fork feels bit sticky and there is very noticiable clunk when it goes up and down. In slow speed roots you can definately feel it in your arms. And Stoy has quite hars top out. You can feel it when compressing rear and let it come up freely. Whole frame knocks from it. I think I should contact Bos and see what they think about it.
 

demo 9

Turbo Monkey
Jan 31, 2007
5,910
46
north jersey
I got my Idylle Rare and Stoy RaRe and been riding them a little. Fork feels bit sticky and there is very noticiable clunk when it goes up and down. In slow speed roots you can definately feel it in your arms. And Stoy has quite hars top out. You can feel it when compressing rear and let it come up freely. Whole frame knocks from it. I think I should contact Bos and see what they think about it.
just make sure that before you contact the company who makes it, that you post it online :thumb:
 
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spes

Chimp
Jun 11, 2008
57
6
I already sent emails about these problems to where I bought the bike and them said its ok for new fork and shock. So if someone has same problems (like supercow told in page 1) they could tell me is it worth service or will it go away when riding more and bushings etc. loosen a little.
 

demo 9

Turbo Monkey
Jan 31, 2007
5,910
46
north jersey
I havent owned a shock from them, but of the 2 forks ive had, neither of them had that problem, something has gotta be wrong
 

MrPlow

Monkey
Sep 9, 2004
628
0
Toowoomba Queensland
I already sent emails about these problems to where I bought the bike and them said its ok for new fork and shock. So if someone has same problems (like supercow told in page 1) they could tell me is it worth service or will it go away when riding more and bushings etc. loosen a little.
Air fork or coil? Clunking at low speed or high or both? and at any given travel?
Where are you?
I will try my best to help you out. Need more information.
 

MrPlow

Monkey
Sep 9, 2004
628
0
Toowoomba Queensland
I already sent emails about these problems to where I bought the bike and them said its ok for new fork and shock. So if someone has same problems (like supercow told in page 1) they could tell me is it worth service or will it go away when riding more and bushings etc. loosen a little.
Air fork or coil? Clunking at low speed or high or both? and at any given travel?
Where are you?
I will try my best to help you out. Need more information first though.
 

supercow

Monkey
Feb 18, 2009
969
128
Mr Plow - off the record here, but a while back when TFTuned was still the UK service centre, one of the lads there was able to silence my Stoy for me. I've noticed it's very much pot luck, whether you get a very noisy one, or one that just kinda wheezes. It seems to also be exaggerated on bikes with a long shock stroke.

Do you reckon there's something that can be done to my Void to shut her up a bit?
 

spes

Chimp
Jun 11, 2008
57
6
Air fork or coil? Clunking at low speed or high or both? and at any given travel?
Where are you?
I will try my best to help you out. Need more information.
New air fork. In both low and high speed. And in all travel. I'm from Finland, so I guess I have to send it to England or to Bos.
 

Tomasis

Monkey
Feb 26, 2003
681
0
Scotland
New air fork. In both low and high speed. And in all travel. I'm from Finland, so I guess I have to send it to England or to Bos.

Send it to Mad Elkes in Ireland.

I dont recommend to send to Bos as I wrote above. If you decided take risk, then let us know how it goes in France and Communication with them.
 

spes

Chimp
Jun 11, 2008
57
6
Got instructions that open all compression and rebound and compress fork few times. It helped, now fork is butterly smooth! Don't know what happened but it worked!
 

supercow

Monkey
Feb 18, 2009
969
128
As I mentioned before, you've now correctly balanced the negative air chamber :)
Glad you got it sorted.