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PX Questions

36 posts from 10 voices
  • Started 2 years ago by Domestique
  • Latest reply from xjahx

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12Next »
  1. Domestique
    Member

    Hi y'all,

    I've been tossing around the idea of building up either a Mooto-X with a Rohloff or a PX and although the Mooto-X/Rohloff would be 'very' cool, I think I'm going to go with the PX. Main reason being financial in that most of my gear from the Compact should as far as I can tell be able to transfer over except for the fork and brake calipers. Jon recommends going with the TRP EuroX brakes so that takes care of that but what about the fork, any suggestions?

    Also have a few geometry questions. First off, I noticed the standover height is about two inches higher on the PX compared to my Compact, can someone enlighten me as to why?

    Second, the headtube on the PX is shorter. For example, my 55 Compact which has what most would consider a somewhat aggressive geometry, a 137mm headtube whereas the same sized PX is only 135mm. Is there a reason for this? I understand the PX is a race bike but does that mean they are not comfortable for road work? I don't plan on riding centuries every week but I don't want to be bent over like Quasimodo all the time either. In short, is the PX comfortable enough to ride everyday?

    The main attraction of the PX for me is the ability to run larger cross tires which would allow me to go places I wouldn't even consider with the Compact. There are lots of great gravel/dirt trails around here that I would love to ride and to be able to do both road work and ride the trails just by swapping out my wheels would be great. Kinda like a 'jack of all trades, master of none' sort of thing.

    Thx,

    D.

    Posted 2 years ago #
  2. xjahx
    Member

    Dom, I know that someone gave you crap in the other thread for asking so many questions. I am always happy to answer if I feel that I can meaningfully contribute in a brief period of time. That being said, may I suggest a few additional forums where you may be better able to research many of your questions:

    forums.serotta.com
    forums.roadbikereview.com
    bikeforums.net

    Searching these forums will reveal an endless supply of knowledge. For instance, in regard to your question above, you should really investigate if you ride a 55cm road frame, should you be riding a 55cm cross frame? What does it even mean to be a 55cm cross frame?

    http://www.bikeforums.net/showthread.php/138316-Sizing-And-Cyclocross-Bikes

    Also, from a recent sales thread at serotta:

    "I'm no CX expert but I do have a IF Planet Cross and my understanding is that as far as the short seat tube length on IF cross frames, it is in large part due to their high bottom brackets which are elevated to avoid pedal strike and the like on rocky/rooty courses. In order to raise the BB without making it difficult to stand over the frame when dismounting their "traditional" cx build (and all their frames are custom now so I assume this can be adjusted) are built with short seat tubes.

    Not all cx frames do this, some are purposely built with traditional road BB drop in order to feel more stable in turns, and I recommend riding both if you are thinking about getting your first CX frame (or a second). I love the ride of my planet-X, but it is a bit "high" feeling when you throw it into a turn on pavement. It more than makes up for that when riding on dirt and trails.

    As for the somewhat short TTs, I think it is generally accepted that your cross bike should be a bit shorter than your road frame due to the technical requirements of cross racing, you don't want to be quite as stretched out and weighted on your bars."

    Give a man a fish...teach the man to fish... Now get fishing.

    Posted 2 years ago #
  3. Full Mootion
    Member

    I do know the bottom bracket drop is a touch different giving the Psychlo more clearance and effectively raising the step over. I also believe there's a difference in seat tube length. The compact has a greater sloping top tube and a shorter seat tube as a result. On the fork side have you looked at either the edge CX or wound up CX carbon offerings? Both nice forks. Make sure you check with Jon on max tire size as i've seen some posts on here regarding that issue

    Posted 2 years ago #
  4. Domestique
    Member

    Yeah, I saw the higher BB height too, I guess it's to help clear obstacles on the trail (a good thing), but I wonder how it affects road 'feel'? Should be ok.

    I'm a fan of Edge/Enve so I was thinking of using their cross fork, but if there's a better choice I'm open to suggestions.

    For tires I'm leaning towards FMB 34mm.

    Posted 2 years ago #
  5. EastCoastRoadie
    Member

    The bottom bracket is higher as folks pointed out to accommodate better clearance. This definitely comes in handy off road or cx racing.

    The bike will ride a bit differently on the road than the compact (my PXs are both 55 as is my Compact)-a little more upright with the shorter cockpit as referenced. It is still a pretty darn good road bike, even with cx tires that do not have an aggressive center tread. I know a few people who use it as their dedicated road bike in the summer with slicks, and their cx bike come September. As for what you can ride with a PX, pretty much anything. It was even my mountain bike for a few years before I got a Mooto-x. Not optimal, but got the job done!

    I have the Alpha Q CX 20 on my pit PX which obviously is no longer available. Have the Edge Cross fork on my newer PX and love it! If I had to ride one bike for the rest of my life it would be my PX. The newer versions are better b/c you have a lot more options for crank and single chain rings up front than you had on the older models. The right rear chain stay was reshaped to provide a little more flexibility in this area.

    Posted 2 years ago #
  6. Domestique
    Member

    Hey ECR,

    LOL... you sold me! I'm gonna head over to see Scott @ Evolution to get the ball rolling.
    (I've been dying to ride on the Canal and Fairmount Park)
    Thx,

    D.

    Posted 2 years ago #
  7. tbill
    Member

    You can't go wrong with a Psychlo-X. Another reason why the headtube is shorter is that the fork is much longer to accommodate larger tires (this affects standover, too).

    Posted 2 years ago #
  8. EastCoastRoadie
    Member

    D.
    Scott will get it set up perfectly! The canal and the park are just the beginning of the places you should take it. With all the gravel roads and "pave" we have around here, it is like a playground for a PX.

    Posted 2 years ago #
  9. Domestique
    Member

    tbill, that makes sense with the fork being longer, thx.

    ECR, you are sooo right about the 'pave' around here, our roads are chewed up with all the snow we've been having, another reason to go with a PX.

    Question, what do you guys recommend for a tubular tire I can use (within reason) on both road and bike trails? I'm thinking 34mm FMB (I'm a little bit of a tire snob) but not sure which one, any advice?
    Thx again,

    D.

    Posted 2 years ago #
  10. Domestique
    Member

    Subjective question...

    How's the PX for use on the road? I realize it's a cross bike and the frame's geometry is not geared towards road work like a dedicated road bike, but is it still good enough for regular road riding? I guess tires will play a major role in that.
    Thx,

    D.

    Posted 2 years ago #
  11. Domestique
    Member

    More PX questions (sorry...)

    I'm just about ready to order the brakes for my PX, and Jon recommends going with TRP's EuroX cantilever brakes, but they also make the CX9 v-brake which Full Mootion says he's using with his sti setup and loves them. Would I be better off with the cantis or v-brakes with my Campy Record 11 levers? If it helps, I don't have any plans to go racing, just casual road/trail riding and commuting.
    Thx,

    D.

    Posted 2 years ago #
  12. tbill
    Member

    I think for me the biggest issue is braking—canti's are great for mud clearance and are fine up to a point, but on fast descents etc. leave something to be desired imo. A P-X with discs would be an interesting option, especially if a lot of off-road riding is in the cards. Personally, I lean more towards a beefed up Mootour as my preferences evolve.

    Posted 2 years ago #
  13. JonC
    Administrator

    Dom,
    Tbill is correct....cantis are for "scubbing" speed not hard core-tire-lock-up stuff. The mini v's or the 950 will produce more power for sure.

    Me personally I've always gone the route of cantis...we don't get much mud in Colorado cross races, but when we do it's the clay stuff....clearance makes a difference at that point.

    My .2

    Jon@Moots

    Posted 2 years ago #
  14. Domestique
    Member

    Hey Jon,

    Yeah, but you're one of those hard-core cross racer types. I've read about you (very impressive I might add...). Since I have no plans on racing anytime soon and really only see myself using the PX for 'casual' combined road & trail riding, I think the TRP CX 9 mini v-brakes might be the better choice for me than their cantilevers. I'd feel more comfortable knowing that I can stop 'NOW" if need be.

    Going to see Scott today @ Evolution to place the order for the PX.
    Oh yeah!

    One more thing, maybe a dumb question but here goes... will TRP's v-brakes work with a large cross tire? I plan on going with FMB, probably a 34mm if they'll fit.
    Thx,

    D.

    Posted 2 years ago #
  15. JonC
    Administrator

    Dom,

    FMB 34....mmmmm nice tire.

    The 34 will fit with the mini v.

    Thanks,

    Jon@Moots

    Posted 2 years ago #
  16. Domestique
    Member

    The deed is done... PX has been ordered.

    Hey Jon, is it done yet? :-)

    Posted 2 years ago #
  17. Full Mootion
    Member

    Running the TRP CX9's on schwalbe marathon supreme 32's and no problem.

    Posted 2 years ago #
  18. xjahx
    Member

    D, you will not regret the purchase. I currently have two Psychlo-X. The one (2001, YBB, 1 inch headtube, matching steel IF fork) qualifies as my most beloved bike, which out of a constantly evolving stable is saying a lot.

    Posted 2 years ago #
  19. JonC
    Administrator

    Dom,
    Psychlo X on the way! I believe it's leaving today.

    Send pics when the build is complete....Campy 11 on a cross bike....drool.

    Thanks for the support!

    Jon@Moots

    Posted 2 years ago #
  20. Domestique
    Member

    no way... today, really?

    Posted 2 years ago #
  21. Satellite
    Member

    Domestique,

    Moots had one waiting just for you; they didn't want you to change your mind. Post some photo's when she is built up.

    When I bought my 2003 Mootaineer, Moots stayed open on Christmas Eve and it was a perfect powder day, to deliver my frame, how's that for customer service.

    When I bought my 2004 VaMoots SL I was told 6 to 8 weeks, the frame was on my door step the next day even better customer service.

    When I bought my 2008 VaMoots it was a complete bike in two boxes on my door step the next day, just had to put the wheels on, every time the customer service is better.

    That's why I originally bought a Moots due to another companies poor customer service, and I have and will remain brand loyal to Moots because they stand behind their products and business model.

    Satellite

    Posted 2 years ago #
  22. Domestique
    Member

    I hear ya Sat, Moots is the best in the biz. Another reason to get a Moots is my local dealer, Scott has been 'awesome'.

    Posted 2 years ago #
  23. woody
    Member

    Hey Sat,
    Now you need to order up your RSL and see if the mothership can get to you in 12 hours...

    Woody

    Posted 2 years ago #
  24. Satellite
    Member

    Woody,

    LOL, I have been tempted, however I don't have any time to ride all the bikes I have now. I did just get about 100 miles commuting via bike on a business trip to California. That S&S Coupled VaMoots was the best investment I have made in a long time. I have to go 1200 miles to get a ride in Sickening.

    Satellite

    Posted 2 years ago #
  25. Domestique
    Member

    Hey Woody,

    That's one of the reasons I went with the PX. It'll go pretty much anywhere so I only need the one bike. I'm gonna miss the Compact for sure, she's been a great ride but I only want to keep one bike and the PX is it. Besides, I don't think I could afford an RSL even if I wanted one, the regular PX will do just fine, thank you very much! :-)

    One more thing... I'm not getting the one Jon was talking about earlier. It was the right size (55) but I wanted an extended headtube and a chain hanger so they're gonna make a new one for me. Scott says approx. 8 weeks.

    D.

    Now I am waiting for my PX...

    Posted 2 years ago #
  26. xjahx
    Member

    I love the chain hanger. A nice touch from the days of old.

    Posted 2 years ago #
  27. Domestique
    Member

    Another PX question...

    I'm still on the fence on which brakes to get. Jon recommends TRP EuroX but he's using them for cross racing (I don't race), and FM says he likes his TRP CX9 but they're just plain fugly (sorry FM). I know I shouldn't be concerned with aesthetics but what can I say... I'm vain.

    There's a company out in CA named 'Paul' that makes some nice cantis, anybody ever use them, opinions?
    Thx,

    D.

    Posted 2 years ago #
  28. xjahx
    Member

    Paul makes some of the nicest components out there. They are a machine shop that makes practical bits, just like Phil Wood and White Industries. You cannot go wrong with Paul except for the fact that the Neo Retros are almost too strong. A lot of people run the Touring model in the rear, because they have less protruding arms when mounting/dismounting your cross bike.

    Posted 2 years ago #
  29. Anonymous
    Unregistered

    Domestique

    Perhaps you should split the difference and go with TRP's CR950's. Less mud shedding than EuroX, but your not racing. Nicer looking than CX9's and they stop pretty darn good in road/gravel ride type conditions. They are a little more "up to date" looking then Mr. Paul's offering, although thats all personal taste I expect.

    drv

    Posted 2 years ago #
  30. Domestique
    Member

    I dunno... I think the Pauls look ok, certainly not as ugly as the CX9 (sorry again FM, couldn't help it...) :-)

    Posted 2 years ago #

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