just to throw this out there but rocky changed their geometry on the 06 rmx so it can be used as a downhill bike at least that was what i was told when i talked to them.
Demo8 Versus Demo9
- Thread starter BigMike
- Start date
I recall you saying that you had a custom longer than average shock on your bike...that would do it.Red Bull said:
The bb on my demo 9 w/ boxxer is low (like just above 14 I think), and it is slack too. For my riding style (racing and general DH) the geometry is spot on. It's super stable at speed because of the long wheelbase, yet it corners like it's on rails because of the short chainstays. After spending some time on a demo 8 recently I decided I don't really like it, it felt like I was riding a scooter or something. I might end up just keeping my demo for next season, too...
i love my demo, i took it out, and it corners really well, and the geo feels great, mine actuallly weighs abit less compared to the stock d9. itll be even lighter with a dhx ti spring, and dual minions w xc tubes or tubless, ti railed seat, carbon post, and bars and stuff, you could get it down perdy low, and if you run the right sag who cares, i say, run an inch more sag than on the d8, and youll still get the same travel and a lower bb. perhaps a shorter shock would help, but i have no idea.
Believe it or not but specialized devoloped the demo 8 for DH. It has a better geometry for it. But there is better out there...
so what size shock is supossed to be on a Demo 8?...Is anyone using a DHX air?...D
8.75 by 2.75
the demo nine is 9.5 by 3.0
the demo nine is 9.5 by 3.0
konabiker:
As far as the DHX Air goes - word around the campfire is, that due to the slightly higher than average leverage ratio of the Demos, the DHX Air isn't suited to this application.
...I don't think that you guys realize this, but the geometry between the Demo 8 and Demo 9 is identical EXCEPT for: BB height, Shock length, and rear travel... - Everything else is the same - WB, TT, Chainstays, etc.
As far as the DHX Air goes - word around the campfire is, that due to the slightly higher than average leverage ratio of the Demos, the DHX Air isn't suited to this application.
whats the diff with demo 8 1 and 2 bsides the components... looking more at the frame right now
i would pick an 8 for racing and stuff, but im a freerider maself, so i say a 9 is better, right paul.
color...that's it.clandestine said:
Well it's less than a 3:1 ratio..so if that is the case the DHX is not going to work on a lot of bikes...DS.K.C. said:
its a 3 to one ratio on the demo nine
The manitou spring doesn't say on it. Just says the spring weight. I know the shock is a 3 inch stroke, though.Red Bull said:
DHX right? then it's 3" stroke. The extra .25 length is so the spring doesn't bottom on itself before the shock bottoms.Red Bull said:
Red Bull said:Pics!
I really dislike my Demo. I have a 15" BB (in the low setting! :mumble: ) and run my DH40 at 7". I dont understand why my bb is so high, maybe custom geo? (straits old bike)
Hmm, id love a racier bike, possibly a demo 8...:
and the fact that they dont make the shock in a 2.75 stroke (which seems wierd due to the plethora of bikes running that stroke that would benefit from such a shock - maybe next year?)S.K.C. said:
settle down there, all DHX's are like that...Red Bull said:
I don't think 4" tires count as "stock geometry"Red Bull said:
how do i run saint cranks on my d nine?
Damn, I wish I could get 15" on mine. My phat booty drops it down to 12"...Time to put it on the "high" position I guess. Just too lazy I guess. :mumble:Red Bull said:
Me:
The reason Fox dosen't make a 2.75 stroke DHX Air, is because they have already determined that the leverage ratios for that length, in general, are too high for the DHX Air to be suitable.
If they manage to re-work some things, maybe eventually we'll see one, but for now, it's been pre-determined.
xy9ine:
...but that's precisely it.
The reason Fox dosen't make a 2.75 stroke DHX Air, is because they have already determined that the leverage ratios for that length, in general, are too high for the DHX Air to be suitable.If they manage to re-work some things, maybe eventually we'll see one, but for now, it's been pre-determined.
hmm...I wonder if a 9x3 shock would fit on an Demo 8
because he already had one?
motomike said:
genius I tell ya
That and the Shiver is a really really plush fork. If my 40 broke and I had to buy a new fork I'd buy a Shiver. The added weight would be a negaitve, but it works just as well, and when riding the bike, I can feel no more flex. I'm glad that the DHX air won't fit. Let's wait for everyone else to test them out for us, then when they fix all possible problems and have them ready for the D8, it'll be radness. Arrrg, I really want my '06 Demo soon!
** Does anyone know if my 5th Element from my AS-X will fit in my Demo? I'm not digging the steepish head tube angle, a little slacker would be rad, and lower should be an interesting experiment. 5th= 8.5 x 2.5, I believe. **
** Does anyone know if my 5th Element from my AS-X will fit in my Demo? I'm not digging the steepish head tube angle, a little slacker would be rad, and lower should be an interesting experiment. 5th= 8.5 x 2.5, I believe. **
It'll fit, but you'll be turning your D8 into a lowrider...
What you need is an 8.75x2.75" shock - that smaller one form your Yeti will rob you of some suspension travel, and lower the bottom bracket height - even if you try to compensate by running the taller HT angle (which raises the BB height).
What you need is an 8.75x2.75" shock - that smaller one form your Yeti will rob you of some suspension travel, and lower the bottom bracket height - even if you try to compensate by running the taller HT angle (which raises the BB height).
^^^he knows, he just wanted to try to shorter shock and see how it felt...
one ride on my Demo and my Swinger already is fvcking up:mumble:..loose eyelet reducers or maybe bushings...D
nah, you just don't know how to ask for it. something along the lines of "Fox, we'd like to spec a 9x2.75 on our top of the line 7POINT" seemed to work pretty well.S.K.C. said:...but that's precisely it.
ink: (and yes, according to Fox that should be available aftermarket within a couple months as well...)
:love:
That's a very common problem, I had the same issue on my Demo8. Wrap the lower shock bolt (the one that goes through the main frame) in plumber's tape. The problem is the cold forging is too stiff, and when you crank down on the shock bolt the frame doesn't really crimp together like the engineers thought it would. This puts all the work of holding the shock in place on the bushings, which aren't that strong. I had Manitou put in a new bushing at Snowmass, and while it kinda helped, there was still play. The GOOD NEWS is that the play won't get any bigger, it'll just stay about the same. Plus, you can't feel it on the bike. Annoying, yes, but life could be worse.BMXman said:
It seems to be a common problem-mine did it too. Here's my remedy-went to Home Depot and got an 8mm ID wave washer. I flattened it a bit and wedged it between the reducer and the inside of the frame. No more play.BMXman said: