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The Official Iron Horse Sunday / DW-Link Tech. & Tuning Section

Ravenator

Chimp
May 14, 2012
2
0
Thanks for the info im currently riding an 09 sunday expert with
Bos forks ,
Easton havoc wheel
, XO brakes , Descendant cranks
, Carbon havoc bars
E13 integrated stem
Saint gears
Thompson seatpost .
and cant see how i can make it shed some weight without buying some ridiculously expensive deemax ultimate wheels . any ideas P.s im running a Roco with Ti spring .
 

dw

Wiffle Ball ninja
Sep 10, 2001
2,943
0
MV
At the risk of incurring the wrath of the monkeys, does anyone else wish that another manufacturer would just pirate the design? Sooner or later the world will run out of Sunday frames and parts.
I still have and own all of the models, prints, etc... I've actually considered it, but I feel like I've gone another step with the Pivot Phoenix and Turner DHR. The Sunday was pretty groundbreaking for it's time, and it's definitely still a really viable bike even compared against many more recent designs, and given the relatively light weight even I'm surprised at how few actually have broken over the years. The RC4 shock was almost tailor made for the Sunday in my opinion, and with the e*13 angle changing cups that we ran back in the day, we have the Sunday WC Team's archetypal 63.5 degreeHA/~13.6BB/14.25CS geometry that's now permeated across the industry. No doubt it would be cool to bring the bike back with some better pivot tolerance manufacturing and the adjusted geometry as stock. (We built a few prototype frames like this, Sam Hill probably sold them to some grom who doesn't know what they have or maybe they are in Heimdal's garage... hah)

If someone "pirates" the design though, that would be super weak. Haven't a few companies tried to come just close enough anyways? I'm not saying it's the same or anything, but surely there is plenty of Sunday "influence" out there. For better or worse. Maybe someday.

Dave
 

dw

Wiffle Ball ninja
Sep 10, 2001
2,943
0
MV
I love that orange. I really pulled for an Orange production Sunday back in the day but with the close ties to Monster Energy, it wasn't in the cards.
 

Mo(n)arch

Turbo Monkey
Dec 27, 2010
4,441
1,422
Italy/south Tyrol
I still have and own all of the models, prints, etc... I've actually considered it, but I feel like I've gone another step with the Pivot Phoenix and Turner DHR.
Functionwise that might be correct, but the look of the sunday is, let's say timeless. After all these years it's still one of the best looking bikes out there.
So, yes, it would be cool to bring it back.
 

toodles

ridiculously corgi proportioned
Aug 24, 2004
5,479
4,719
Australia
Hey Dave, cheers for the reply. I wouldn't want to rip off the work you invested in the Sunday, I just think it sucks that the frame ended the way it did. I'd have loved to have seen it progress much as some other designs have and potentially be available in carbon etc to suit what the market wants these days. Why did IH have to screw the pooch instead of some of the other stupid arse designs out there that manage to still be successful...
 

slimshady

¡Mira, una ardilla!
I still have and own all of the models, prints, etc... I've actually considered it, but I feel like I've gone another step with the Pivot Phoenix and Turner DHR. The Sunday was pretty groundbreaking for it's time, and it's definitely still a really viable bike even compared against many more recent designs, and given the relatively light weight even I'm surprised at how few actually have broken over the years. The RC4 shock was almost tailor made for the Sunday in my opinion, and with the e*13 angle changing cups that we ran back in the day, we have the Sunday WC Team's archetypal 63.5 degreeHA/~13.6BB/14.25CS geometry that's now permeated across the industry. No doubt it would be cool to bring the bike back with some better pivot tolerance manufacturing and the adjusted geometry as stock. (We built a few prototype frames like this, Sam Hill probably sold them to some grom who doesn't know what they have or maybe they are in Heimdal's garage... hah)

If someone "pirates" the design though, that would be super weak. Haven't a few companies tried to come just close enough anyways? I'm not saying it's the same or anything, but surely there is plenty of Sunday "influence" out there. For better or worse. Maybe someday.

Dave
I wonder if there would be a way to make your design more affordable for the masses. I personally own and enjoy a second-hand Maverick MKIII, and even when I do own other two longer travel bikes, nothing compares to the "magic carpet" feeling its rear suspension delivers. I'd like to buy a 5.5-inch, DW-Link equipped frame, but coming from a third-world country, the costs are almost prohibitive... And truth to be told, the Pivots look hideous to me... Their frames are just too intricate!!!
 

DrSouce169

Chimp
Jan 8, 2009
39
0
Boxford MA
I still have and own all of the models, prints, etc... I've actually considered it
You should start making some replacement F7 linkages then! I would most likely never get rid of my Sunday if there was readily available parts. People seem to do pretty well carrying most stuff, but it's near impossible to get an F7 linkage without buying a new frame.

Speaking of pre-F7 linkages, mine has developed play in what I think is the shock pin and that other metal piece that holds the shock between the linkages. Any thoughts?
 

frgeoff

Chimp
Feb 3, 2009
60
6
DW could bring back an updated 7 point, and an updated sunday under his own label. sign me up, ill sell a kidney to buy one. I own many ironhorse dw-link bikes at the moment and I honestly love them more than any bikes ive ever had, Ive had a lot over the years. I'm not into the turner or pivots to be honest would rather just get a bike from DW himself

3 way adjustable air shock on the 7point, rc4 coil on the sunday
1 1/4 head tube
30.9 seat tube

:droool:
 
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bismojo

Monkey
May 5, 2009
271
39
+1 with sunday 'reproduction'



i really love mine and i wish i can get another one brand new, just the way it is, no design update required (well maybe 63.5 head angle, anodized frame option and shock compatibility)
 

Udi

RM Chief Ornithologist
Mar 14, 2005
4,915
1,200
I remember someone asking what size o-rings I added to my lower link rear bearings when I posted this picture, well I had it apart again today so I measured them - 16.8mm ID x 2.5mm thick.

Bearing life is increased greatly - if you are riding in muddy conditions or power washing it is very handy. I did both for a year in the Alps and was amazed to find the bearings still greased and with no mud inside. With the stock setup they were full of dirt even with mostly dry riding - the problem is the enduro MAX bearings have a small groove in them so the sealing is not 100% effective. A secondary seal is needed.

 

allen

Chimp
Mar 25, 2012
44
0
NJ
I remember someone asking what size o-rings I added to my lower link rear bearings when I posted this picture, well I had it apart again today so I measured them - 16.8mm ID x 2.5mm thick.

Bearing life is increased greatly - if you are riding in muddy conditions or power washing it is very handy. I did both for a year in the Alps and was amazed to find the bearings still greased and with no mud inside. With the stock setup they were full of dirt even with mostly dry riding - the problem is the enduro MAX bearings have a small groove in them so the sealing is not 100% effective. A secondary seal is needed.
Cool trick, do you run O-rings on both ends of the lower link or do you only find it necessary on the max-e bearings in the rear triangle.


AL
 

ritche

Monkey
Dec 3, 2011
311
19
got my RC4 and chopped my 06 red annodize dw link of 06 factory sunday.
no need to buy 07 link and hardware, the rc4 fits fine. photo to follow for reference.

So what the "official" base line setting of the RC4 shox on a ih sunday?

is it correct? boost valve all the way in same as DHX?

what the pressure? some say 140 others 180 -200 psi?

can we refer the RC4 base line settings of the pivot phoenix or it's totally different.
 

Udi

RM Chief Ornithologist
Mar 14, 2005
4,915
1,200
AL -
I just run them on the two bearings pictured, the other bearings are nowhere near as susceptible to mud/water intrusion due to their raised locations. Those two particular bearings are very vulnerable as the swingarm collects mud and holds it. I've actually drilled three small holes to act as a drain in the lowest point of the 'sink' in the swingarm, I found this reduces buildup and also greatly reduces the washing time needed to clean the area (I figure the less time you are hosing that area the better).

ritche -
I don't believe there is an official baseline (perhaps dw can comment) however I've run these shocks in these frames for over a year now, and have settled on the following:
- Boost valve fully closed
- 150psi pressure

LSC should be minimal (I'm running 5 clicks in from open), and HSC is dependent on how much compression support you need. Personally I'm running the HSC fully closed which may not be for everyone, however I've found that running more on the HSC and less on the LSC in general gives more mid-speed compression support without the sensitivity loss / harshness that comes with a lot of LSC. I haven't noticed any spiking, Fox seem to have very well designed HS circuits. Obviously rebound is dependent on spring rate and personal taste.
 

Tomasis

Monkey
Feb 26, 2003
681
0
Scotland
Dw, making a carbon frame and linkage separately would be cool so it'd mean re-live old frames with new linkages and upgrade to carbon main frame with old working linkages. Good for budget-conscious riders :p

I guess im only dreaming now.


For DW's new upgraded version, everything would be revised with about the same look? like as improved linkages and other stuffs you mentioned in the earlier post. For the look, I can understand that people like it as Classic good looking one. Similarly to Ibis Mojo.

the reason writing above is that sunday in even old design is hard to outdo by relatively moderate skill of most riders. Im no under iliusion that I ride like Samhill :)
 
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ritche

Monkey
Dec 3, 2011
311
19
Dw, making a carbon frame and linkage separately would be cool so it'd mean re-live old frames with new linkages and upgrade to carbon main frame with old working linkages. Good for budget-conscious riders :p

I guess im only dreaming now.


For DW's new upgraded version, everything would be revised with about the same look? like as improved linkages and other stuffs you mentioned in the earlier post. For the look, I can understand that people like it as Classic good looking one. Similarly to Ibis Mojo.

the reason writing above is that sunday in even old design is hard to outdo by relatively moderate skill of most riders. Im no under iliusion that I ride like Samhill :)
DW, any plan for a carbon F7 linkage for DW sunday?
 
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b4rk3r

Chimp
May 26, 2012
1
0
This thread has helped me so much. Just got my sunday all built up today and took it out on its first ride :D


 

Chewbac

Chimp
Jun 5, 2012
4
0
Can I join the pony club?? :D

Just picked this one up last week and have started giving it a good once over... no riding for a couple of weeks till after exams and my ankle heals.
Cant wait to ride it :thumb:

2009 TEAM X

horse.jpg
 

DrSouce169

Chimp
Jan 8, 2009
39
0
Boxford MA
Anyone know what the deal was with DW and the new KHS DH300? I had heard the link was infringing on the DW link patent or something, never really found out the whole story, maybe DW can chime in if he's around..
 

scottishmark

Turbo Monkey
May 20, 2002
2,121
22
Somewhere dark, cold & wet....
I remember someone asking what size o-rings I added to my lower link rear bearings when I posted this picture, well I had it apart again today so I measured them - 16.8mm ID x 2.5mm thick.

Bearing life is increased greatly - if you are riding in muddy conditions or power washing it is very handy. I did both for a year in the Alps and was amazed to find the bearings still greased and with no mud inside. With the stock setup they were full of dirt even with mostly dry riding - the problem is the enduro MAX bearings have a small groove in them so the sealing is not 100% effective. A secondary seal is needed.

Wish I'd seen this post earlier (actually, would've been too late by then anyway). Those bearings filling with crap appear to have caused some damage to the lower link on the g/f's bike. Basically it looks like the bearing seized and the spindle has worn away at the softer alu link, so it now has permanent play in this area :(

probably not too hard to get a replacement link, unfortunately having a vivid on it make things trickier though
 

Wolfe

Chimp
Aug 1, 2011
20
1
N.E England
Wish I'd seen this post earlier (actually, would've been too late by then anyway). Those bearings filling with crap appear to have caused some damage to the lower link on the g/f's bike. Basically it looks like the bearing seized and the spindle has worn away at the softer alu link, so it now has permanent play in this area :(

probably not too hard to get a replacement link, unfortunately having a vivid on it make things trickier though
Hey bud get one of these:-
http://www.licycleworx.com/product_p/ih-sunll.htm

I've got one and run a vivid with no problems
 

Wolfe

Chimp
Aug 1, 2011
20
1
N.E England
Nice one! The best I'd found so far was around $120 from a guy in Poland or over $200 for a BOS one.

Only trouble is that they don't appear to ship to the UK, so I might have to get some stateside contacts involved...
E-mail them bud, i got mine delivered to the uk no problems. I had to pay them through paypal.
 

DrSouce169

Chimp
Jan 8, 2009
39
0
Boxford MA
Basically it looks like the bearing seized and the spindle has worn away at the softer alu link, so it now has permanent play in this area :(
Speaking of play in the linkages, my '06 has some play in what appears is coming from the upper shock pin. My lbs said it was DU bushing and changed those out, but the play is still there... When I lift the seat up while the bike is on the ground, there is like a noticeable click and you can feel a pop from what I think is play on that piece that goes between the two rocker arms. Anyone have any ideas??
 

Porno

Chimp
Jun 7, 2012
1
0
Hey guys, I'm looking at picking up an sunday frame when I get back from overseas, not sure on year yet, I have heard something about a 'sunday tune' anyone have any more info on this? I would be planning on getting an RC4 in there as soon as I get it, will it need to be tuned?
 

sundaydoug

Monkey
Jun 8, 2009
609
271
Hey guys, I'm looking at picking up an sunday frame when I get back from overseas, not sure on year yet, I have heard something about a 'sunday tune' anyone have any more info on this? I would be planning on getting an RC4 in there as soon as I get it, will it need to be tuned?
I'm sure UDi will chime in with respect to the RC4, but it seems to be a shock that's very well-suited for the Sunday. When people refer to a "Sunday Tune" they're most likely referring to the Vivid's A-tune.

I believe that you'll have to cut a bit out of the lower link in order to get the RC4 to fit though.
 

sundaydoug

Monkey
Jun 8, 2009
609
271
Speaking of play in the linkages, my '06 has some play in what appears is coming from the upper shock pin. My lbs said it was DU bushing and changed those out, but the play is still there... When I lift the seat up while the bike is on the ground, there is like a noticeable click and you can feel a pop from what I think is play on that piece that goes between the two rocker arms. Anyone have any ideas??
I have an '08 and I had the same play "feeling" of lifting the bike up by the seat and feeling it, but it was actually play inside the lower link. I tapped the pin out, covered it in bearing retainer compound, re-assembled the frame, and then let it sit for 2 days to cure. Problem solved.
 

Udi

RM Chief Ornithologist
Mar 14, 2005
4,915
1,200
Wish I'd seen this post earlier (actually, would've been too late by then anyway). Those bearings filling with crap appear to have caused some damage to the lower link on the g/f's bike. Basically it looks like the bearing seized and the spindle has worn away at the softer alu link, so it now has permanent play in this area :(
You can clean those two parts thoroughly and coat them generously in loctite 609 retaining compound before quickly reassembling and leaving untouched for 24-48 hours to solve the problem. I've covered it in more detail if you read backwards through the thread.

Hey guys, I'm looking at picking up an sunday frame when I get back from overseas, not sure on year yet, I have heard something about a 'sunday tune' anyone have any more info on this? I would be planning on getting an RC4 in there as soon as I get it, will it need to be tuned?
Stock RC4 works absolutely fine, no custom tune is needed. I've run both 2011 and 2012 versions for extended periods of time. As sundaydoug suggested above though (and as you possibly already know) the two cross braces need to be removed from the lower link to fit the shock. I haven't experienced or seen any link failures as a result of this, but obviously you cut it at your own risk.
 

scottishmark

Turbo Monkey
May 20, 2002
2,121
22
Somewhere dark, cold & wet....
I'm gonna get hold of a replacement link (given the diminishing spares situation it seems daft not to) but will keep the old one as a spare and loctite it if it's ever needed. Will need measure the damage, but I've got a feeling that it might be pushing bearing retainer a bit far
 

Udi

RM Chief Ornithologist
Mar 14, 2005
4,915
1,200
Definitely do that, but the retaining compound is brilliant (and incredibly strong) provided you follow the guidelines - particularly the curing time. There are different versions available depending on the gap you are trying to fill, and the loctite datasheets provide the maximum size of this gap as well as numerically labeled cure time vs. strength graphs. I've found the 609 quite good for this application, and have run multiple seasons without play ever re-developing (it does however make disassembly a little more physical, but not too bad).

Personally I would advise using a small amount of the product even on a brand new link and pin, as I have seen play develop in that interface with no obvious user error. By locking those two parts against each other, their life is greatly extended.