Tax Return= I want a 4X bike!

[Mudman]

So the time has come for another bike! Although this time I don't have to empty the bank for it...

I had so much fun the last couple of times on the 4X track at Fontana with my current bike that I got the itch for a proper 4X machine. So far I've just been asking a few people about some opinions on a build and what they would change and why. So I thought you guys could help me out here as well!

The current build is pretty much this:
Frame- Black Market MOB
Sram X9 Shifter
Sram X9 rear Der.
Azonic Strip Bar
Thomson Seat post
Thomson Stem
Avid Juicy 7 Brakes
Sram PG980 Cassette
Sram PC991 Chain
Truvative Stylo Cranks
E13 LG-1 Chain Guide
Bombshell Fatdaddy wheels
X-Fusion Velvet Fork
Kenda Small Block 8 tires

I'm hoping to get this built up and running before the next SRC race...

[Abstrakt77]

you are the richest 20 year old I know. I'm extremely jealous.

[Rob]

Only thing I would do is pay the extra money for the 990 or XT cassette instead, since it uses a large aluminum body for most of the cogs instead of spacers it'll put less wear on the freehub body and it's lighter. I'd also use a Shimano chain myself.

[Mudman]

Originally Posted by Abstrakt77

you are the richest 20 year old I know. I'm extremely jealous.

I beat up little kids for their lunch money. And sell paperclips to big companies... haha

Some people like to save their money, I myself have not learned how to do so yet. So I keep buying things...

are we going to race when I get my bike built up?

[Rockinthecasbah]

You might want to stick with the spacer setup in case your chainline/cranksetup deosnt allow all 9 cogs. WIth he spacers you can easily remove the big gear and have the tallest 8 gears smallest(lightest) you dont need to big gears on a 4x bike anyways

[BobBurnes]

Originally Posted by Mudman

I beat up little kids for their lunch money. And sell paperclips to big companies... haha

Some people like to save their money, I myself have not learned how to do so yet. So I keep buying things...

are we going to race when I get my bike built up?

Oh, yeah! Get the road cassette gearing though, bro. Trust me. You're legs and your chain will thank me later. Maybe at the Taco spot in Fontana.

[Rockinthecasbah]

O yea taco spot hummmmmmmmmm tacos, I'm running a 12-22 with the 22 taken out and a spacer added to keep the chain away form the chainstay the chainstay width on blck markets doesnt give you much room out back

[2wheel_lee]

Originally Posted by Rockinthecasbah

O yea taco spot hummmmmmmmmm tacos, I'm running a 12-22 with the 22 taken out and a spacer added to keep the chain away form the chainstay the chainstay width on blck markets doesnt give you much room out back

Huh? As mentioned, the 9-speed cassette I was using on my Riot with a 12-tooth cog worked fine for me.

Mudman, sorry that I'm too lazy to look up that fork, but could you tell us more about it, such as travel and axle-to-crown height?

[Mudman]

Originally Posted by 2wheel_lee

Huh? As mentioned, the 9-speed cassette I was using on my Riot with a 12-tooth cog worked fine for me.

Mudman, sorry that I'm too lazy to look up that fork, but could you tell us more about it, such as travel and axle-to-crown height?

I dont know much about the fork myself, it was suggested by someone else. The Marzocchi 4X fork would be nice but its a tad bit out of the price range.
the only thing I know on the Velvet is that its 130mm travel.

I'm willing to take any suggestions on other parts as well though including the fork. The only must have for me is the frame, shifter and der.

[2wheel_lee]

130 mm travel? Is it adjustable? By the way, the Mob was designed around an 80 mm fork. A 100 mm fork is ok, but it slackens the head angle nearly one degree and raises the bottom bracket a tad as well. Some DJers ever run a fork set at 65 mm. I think the 100 mm fork is ok (mine was 110) but I think a 130 mm fork will make the bike handle a bit goofy.

[BobBurnes]

Originally Posted by Mudman

I dont know much about the fork myself, it was suggested by someone else. The Marzocchi 4X fork would be nice but its a tad bit out of the price range.
the only thing I know on the Velvet is that its 130mm travel.

I'm willing to take any suggestions on other parts as well though including the fork. The only must have for me is the frame, shifter and der.

Actually, I've got a Marzocchi 4X fork that's been TF Tuned for sale Mud. For you, it's 50% off at a steal of 325 bucks.

Totally agree with Lee. 130mm is a bit much for that frame and will make the steering very quick and put a some stress on the head tube as the MRKT was designed around the 80-100mm range.

You want these forks...you need these forks....

[Rockinthecasbah]

4x tops out hard bobs might not if its been tuned but I am not all that satisfied with mine I need to check the levels,

[BobBurnes]

Originally Posted by Rockinthecasbah

4x tops out hard bobs might not if its been tuned but I am not all that satisfied with mine I need to check the levels,

Yeah, these are tuned by one of the kings of suspenion, Tim Folks (spelling), over in England. No top out problems. Ricky, deplete the air in the left leg and set the right leg to 32 psi, bro. Dial down 1/4 on the rebound knob and enjoy.

[Abstrakt77]

Originally Posted by Mudman

...are we going to race when I get my bike built up?

4 shizzle. Are you free this Fri to tear some ish up somewhere?

[Mudman]

the Velvet can be converted to 120/110/100/90/80mm of travel, its internally adjusted.

[BobBurnes]

Originally Posted by Mudman

the Velvet can be converted to 120/110/100/90/80mm of travel, its internally adjusted.

Put her at 100mm fo'sho! Set sag to at least 15% and make right the rebound, mate.

[Mudman]

Originally Posted by Rockinthecasbah

4x tops out hard bobs might not if its been tuned but I am not all that satisfied with mine I need to check the levels,

my 888 tops out hard also. Might be a problem with Marzocchi in general, all I know is that I hate it.

[BobBurnes]

Originally Posted by Mudman

my 888 tops out hard also. Might be a problem with Marzocchi in general, all I know is that I hate it.

I'm not sure about the 888's but Marzocchi forks, the smaller AM travel ones, are built around an air assited left leg with spring. It's only supposed to be adjusted from 0-35 psi depending on rider weight, but I've found the recommended weight to cause my forks to "Pop" down. If the 888 is set up like that, lower that pressure by 5 psi until the top out "thump" goes away.

[Mudman]

Originally Posted by BobBurnes

I'm not sure about the 888's but Marzocchi forks, the smaller AM travel ones, are built around an air assited left leg with spring. It's only supposed to be adjusted from 0-35 psi depending on rider weight, but I've found the recommended weight to cause my forks to "Pop" down. If the 888 is set up like that, lower that pressure by 5 psi until the top out "thump" goes away.

doesn't work...

[Mudman]

hmm I may need to think this one out. Don't know if I or the bike will be ready to race 4X next week. Beginner class looks pro!

other than a few bits and pieces, it looks like the build will generally stay as is. I may run an Ultegra cassette though... Anyone else have more tips or suggestions?