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Fox DH40RC2 Pics & Info

Bulldog

Turbo Monkey
Sep 11, 2001
1,009
0
Wisconsin
Man, I must really love Marzocchi AND burly SC forks. The 8" DH40 is a touch lighter and a touch shorter than my 6" 66RC! :eek: Long live the ginormous SC fork! :thumb:
 

Cave Dweller

Monkey
May 6, 2003
993
0
Go-ride,

Quick question. What are the center to center dimensions on the fox DH40 crowns. Im wondering if they would work on my 02 monster, i wouldn't mind bringing the legs in closer to the bike like the DH40 has them. The offset on monsters is stupid.

Thanks
 
Jul 17, 2003
832
0
Salt Lake City
Cave Dweller said:
Go-ride,

Quick question. What are the center to center dimensions on the fox DH40 crowns. Im wondering if they would work on my 02 monster, i wouldn't mind bringing the legs in closer to the bike like the DH40 has them. The offset on monsters is stupid.

Thanks
Seems to be about 78mm, I doubt it will work.
 

OGRipper

back alley ripper
Feb 3, 2004
10,763
1,286
NORCAL is the hizzle
Cave Dweller said:
Go-ride,

Quick question. What are the center to center dimensions on the fox DH40 crowns. Im wondering if they would work on my 02 monster, i wouldn't mind bringing the legs in closer to the bike like the DH40 has them. The offset on monsters is stupid.

Thanks
Wouldn't that screw up your hub spacing? Can you move the legs closer without needing new lowers...? :confused:
 

MikeD

Leader and Demogogue of the Ridemonkey Satinists
Oct 26, 2001
11,737
1,820
chez moi
So since it has flat crowns, we all need aftermarket drop crowns, right? When will you have them available...and more importantly, what color will they be anodized??
 

zedro

Turbo Monkey
Sep 14, 2001
4,144
1
at the end of the longest line
Cave Dweller said:
Go-ride,

Quick question. What are the center to center dimensions on the fox DH40 crowns. Im wondering if they would work on my 02 monster, i wouldn't mind bringing the legs in closer to the bike like the DH40 has them. The offset on monsters is stupid.

Thanks
you do realise that reducing offset would change the handling characteristics right?
 

Transcend

My Nuts Are Flat
Apr 18, 2002
18,040
3
Towing the party line.
MikeD said:
So since it has flat crowns, we all need aftermarket drop crowns, right? When will you have them available...and more importantly, what color will they be anodized??
no, the fork has 2 crown options for diff headtube lengths.

small for 90-165mm headtubes
and XL for 165-181nn
 

MikeD

Leader and Demogogue of the Ridemonkey Satinists
Oct 26, 2001
11,737
1,820
chez moi
Transcend said:
no, the fork has 2 crown options for diff headtube lengths.

small for 90-165mm headtubes
and XL for 165-181nn
You're no fun at all. What kind of CNC'd chi-chi aftermarket bits will separate the cool guys from the unwashed masses? I mean, EVERYONE has cool brake levers now...

MD
 

OGRipper

back alley ripper
Feb 3, 2004
10,763
1,286
NORCAL is the hizzle
He asked for the center to center dimension on the crowns so I was thinking he wants the c-c dimension of the two legs, like he wants to bring the legs closer together. Can be interpreted either way but it wouldn't be the first time I was wrong.

So Cave Dweller, which is it? Center to center of the legs, or center of the legs to, uh, center of the headtube?

Either way...no. Just kidding. Heh. :p :p
 

nixhexss

Monkey
Oct 17, 2001
239
0
New York
fox told me today that they wont have any of these forks til march, so they're clearly telling customers a later date as to not harness any false hope of arrivals. I EP'd one waaay back in december...anyone have any dates or ideas about when us EP children should be receiving ours???
 

joelsman

Turbo Monkey
Feb 1, 2002
1,369
0
B'ham
he doesn't want the legs closer together, he wants to move them back toward the steerer, right now they are foward of the steerer tube, this makes the wheelbase longer than w/ other forks.
 

Pip3r

Turbo Monkey
Nov 20, 2001
1,112
0
Foxboro MA
Chris is that A-C measurement to the crownrace or to the bottom of the crown on the stanchions?
Im phsyced to get mine, i was told it wouldnt be untill march though? The only thing im worried about is that damn adjuster knob sticking out on the bottom right leg, i banged up both legs on my dorado real well this past season....
Also, do you think the cheaper version (without high/low compression) will weigh less by any chance?
 

zedro

Turbo Monkey
Sep 14, 2001
4,144
1
at the end of the longest line
joelsman said:
he doesn't want the legs closer together, he wants to move them back toward the steerer, right now they are foward of the steerer tube, this makes the wheelbase longer than w/ other forks.
all forks are foward from the steerer tube; this is called fork offset (or rake) and it's a necessary geometry for proper steering. Giving a fork zero offset would make it handle like a shopping cart. The crowns only determine one part of the offset, the other is via the dropouts.

Changing your Monsters offset without knowing the handling consequences would be dumb; it could totally kill your steering ability.
 

Cave Dweller

Monkey
May 6, 2003
993
0
OGRipper said:
He asked for the center to center dimension on the crowns so I was thinking he wants the c-c dimension of the two legs, like he wants to bring the legs closer together. Can be interpreted either way but it wouldn't be the first time I was wrong.

So Cave Dweller, which is it? Center to center of the legs, or center of the legs to, uh, center of the headtube?

Either way...no. Just kidding. Heh. :p :p
Sorry, might not have said it clearly enough.

Yes zedro, i know it will change the handling, for the better. They designed them this way for northshore riding were turning circle is important, not so important in DH.

The crowns on the monsters push the legs out on the fork, effectivly making the wheel base longer. The fox crowns put the legs almost in line with the streerer tube which i what i want. I love the monsters, but because the legs are pushed out in front they have a kind of slow sloppy "steering a boat" feeling to them when going fast. I don't know if anyone else feels it. but when i went from doraods to monsters i felt it, you get to a certain point and the bike fells like it wants to collapse.

Changing the crowns ain't that dumb, the fox forks have almost the same amount of offset at the wheel (from my visual observation) so i'd say it would be fine.

I was wanting to know, that since the fox fork has 40mm legs and the monster has 40mm legs, if i could put a fox crown on the monster. So i need the center of leg to center of leg measurement.

I doubt it will work but it is worth a try. I was hoping to put these crowns on, and i am soon planning on removing a spring, air up one side (aka zedro's shiver), reduce the oil hieght and put in a custem Ti spring in the other leg and end up with an 8pound monster T :sneaky:

-Matt
 

zedro

Turbo Monkey
Sep 14, 2001
4,144
1
at the end of the longest line
Cave Dweller said:
Yes zedro, i know it will change the handling, for the better. They designed them this way for northshore riding were turning circle is important, not so important in DH.
you dont seem to understand that the offset (crown and dropout) has nothing to do with turning radius, it has to do with whats called 'trail', a geometry in steering. A fork like the F40 may have less crown offset but more dropout offset; the total offset may be the same (like S8 have all their offsets at the crowns and none at the dropout).

Generally there is a limit to the amount of offset that is usable. Using a zero offset crown on your Monster will probably make it unridable (marz typically uses 50/50 offset between the crowns and dropouts). Less offset = twitchier steering, and it doesnt have anything to do with wheelbase, but rather the distance between where the headtube axis meets the ground and the tire contact point (ie. trail). Ride with your front wheel backwards and you'll see what i mean.

That 'collapsing' feeling is what happens with slack head angles.
 

Cave Dweller

Monkey
May 6, 2003
993
0
zedro said:
you dont seem to understand that the offset (crown and dropout) has nothing to do with turning radius, it has to do with whats called 'trail', a geometry in steering. A fork like the F40 may have less crown offset but more dropout offset; the total offset may be the same (like S8 have all their offsets at the crowns and none at the dropout).

Generally there is a limit to the amount of offset that is usable. Using a zero offset crown on your Monster will probably make it unridable (marz typically uses 50/50 offset between the crowns and dropouts). Less offset = twitchier steering, and it doesnt have anything to do with wheelbase, but rather the distance between where the headtube axis meets the ground and the tire contact point (ie. trail). Ride with your front wheel backwards and you'll see what i mean.

That 'collapsing' feeling is what happens with slack head angles.
Yes yes, i understand all this. The reason i want to bring the legs in IS to make them twicher and make the bike a little livlier to take away the "steering a boat" sensation.

The offset of the wheel on the monster and fox looks resonably dam close, see pics below. Granted, there is probably a minute differance. The major differance is between the crowns, see pics. There is no reason to do this, other then to assist in low speed north shore type riding where it is nice to have 180 degree movement of the front wheel. There are no clearance issues with the fork brace or anything so that has to be the reason to do it. The monster was never intended to be a race fork thats why the crowns are this way. Check out the offset on a 888 and thats what a maz race fork offset should be.

I understand if i bring them in two close it will cause problems but i'm sure i can bring them in almost as close as the fox's ones are without causing any issues, im sure fox has done the homework on all the offsets etc, all i have to do is mimic what they have done.

-Matt
 

zedro

Turbo Monkey
Sep 14, 2001
4,144
1
at the end of the longest line
Cave Dweller said:
Yes yes, i understand all this. The reason i want to bring the legs in IS to make them twicher and make the bike a little livlier to take away the "steering a boat" sensation.

The offset of the wheel on the monster and fox looks resonably dam close, see pics below.
ok, for some reason i thought the Monster and Shiver had the same offset but they dont; Shiver is 25+25, Monster is 38+27 (crowns/dropout). That is pretty big.
 

Cave Dweller

Monkey
May 6, 2003
993
0
zedro said:
ok, for some reason i thought the Monster and Shiver had the same offset but they dont; Shiver is 25+25, Monster is 38+27 (crowns/dropout). That is pretty big.
Where did you get access to that? Do you have the technical drawings for the forks? Do you know what the measurements for the 888's are?
 

zedro

Turbo Monkey
Sep 14, 2001
4,144
1
at the end of the longest line
Cave Dweller said:
Where did you get access to that? Do you have the technical drawings for the forks? Do you know what the measurements for the 888's are?
all the older manuals showed those measurements. The only measurement i have on the 888 is the crown offset at 17.5mm
 

zedro

Turbo Monkey
Sep 14, 2001
4,144
1
at the end of the longest line
Ian Collins said:
measuring how much sense an analogy makes using a numerical figure(zero) doesn't make much sense either.... :D

IC
actually zero in this case is not a numeral but rather an adjective signifying the absence or lack of making any sense. How's that mister-not-so-smarty-pants
 

Jm_

sled dog's bollocks
Jan 14, 2002
20,525
11,012
AK
Cave Dweller said:
Yes yes, i understand all this. The reason i want to bring the legs in IS to make them twicher and make the bike a little livlier to take away the "steering a boat" sensation.


-Matt
You should fill each leg with 300cc of 7.5 wt golden spectro too :sneaky: