Jump to content

Geometry Question


Greetings

Recommended Posts

I'm ordering a custom frame fairly soon, and would like to hear your comments about it's geometry. Basically, this bike is going to be built up for UCI riding. No bashplate, just a 16T bashring.

Wheelbase: 1015mm

Chainstays: 363mm (but I'm thinking about 375 due to the bb rise, however I hated the Python for the long CS)

BB rise: 70-80mm, but probably 75mm

Head tube angle: 72-74

edit:

The remaining setup: 375mm forks, a high rise stem and narrow 680mm Monty bars.

And before you ask, I do like high BB's.

Cheers (Y)

Edited by Inur
Link to comment
Share on other sites

My thoughts would be how it would ride being that short and having such a high bb, also this would depend on what bar/stem you were going to use. This geo maybe similar to the ride that the vinco does but alot shorter I presume. Build it and tell us! hehe

Link to comment
Share on other sites

i'd have it more like :

Wheelbase: 1020mm

Chainstays: 365mm

BB rise: +70

Head tube angle: 72 degree's

but thats my idea of a perfect frame :P

and depending on what fork you use +80bb rise could be more like +60 when you've built it up. Also dont use a high rise stem, i find it feel's like you loose power when you hop :S

joshywa

Link to comment
Share on other sites

itll be wank mate the bb rise is too much for he lenth of the frame to have bb rise that much and to allow the bike to ride decent id say u need a minimum of 1075

beat me too it, inur if you had that geo itd just feel like the toxsin mod, youd need the toptube a hell of alot longer and just because its built for uci doesnt mean you need a ridiculous high bb, look at the mbk the coustellier is riding, 35mm bb rise, and the kenny belay koxx frame 10 bb rise and kenny was like world champion last year

Edited by Gaz M
Link to comment
Share on other sites

Assuming it's for a mod, mod's have a BB rise anyway, as in, very few have a 0 bb rise/drop.

With that in mind, I don't think 70 is that much really, i think my monty's about 40/50......

Anyway, you not liking your Ti inur? You know where to ask if you want rid ;)

Link to comment
Share on other sites

Sorry for the mix up folks, thought the geometry was somewhat self explanatory and didn't write that it's meant for a mod bike.

Wheelbase: 1020mm

Chainstays: 365mm

BB rise: +70

Head tube angle: 72 degree's

joshywa

Sounds good, need to think this over. In what way do you find you loose power when hopping on a high rise stem? It's great for gaps because you can get the front wheel lower without being in an awkward position, taps are easier too. They have their downsides of course.

but seriously, how do you know u like high bb's ? specially 70 is a bit high?

I'm trying to to "tweak" the GU Typhoon geometry which I absolutely loved. Had that bike for a while and then swapped with Gaz because I wanted an even shorter frame. However taking into account that this would be an experiment and I'd keep the current frame, I might as well go a bit extreme. If something goes wrong, I'm sure there'll be somebody out there wanting to buy a short titanium "Monsterboy".

The GU had a 1010 wheelbase, 60mm bb rise, that's why I want to give it a higher bb rise (which I loved about that bike) and make it slightly longer for it not to feel silly - hence the +5mm wheelbase.

beat me too it, inur if you had that geo itd just feel like the toxsin mod

Hope it doesn't dude :D That frame is total shit. Do you find the GU short though?

Assuming it's for a mod, mod's have a BB rise anyway, as in, very few have a 0 bb rise/drop.

With that in mind, I don't think 70 is that much really, i think my monty's about 40/50......

Anyway, you not liking your Ti inur? You know where to ask if you want rid ;)

Don't think so either, +60 was great, I don't think an extra +15 will spoil the way it rides especially that I now have about +35 and it's also fine. IMO bb rise is something which doesn't significantly change the behaviour of the bike, it just helps in certain moves or completely spoils taps :)

Loving the Ti, not selling it :P

Edited by Inur
Link to comment
Share on other sites

nah i dont find the gu short its perfect frame for me, i can tell the difference in taps though but nothing else. make a long bike 1065 ish, low bb 50 ish. it will be a mod tapping machine lol :P

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...