[basikbiker]

so im gonna be building up a frame here at UBI and need some suggestions regaurding some specs.
heres what i got so far.
Max Tire clearance:2.5"
Effective top tube: 23"/584.2mm
Seat Tube Length:10"
Head tube angle: 70
Seat Tube angle:70
chainstay length:15.75"/400mm or less
bb height:13"
standover:25"
wheelbase:41.7"/1059mm
head tube length: 5 "
rear hub spacing: 135x10mm
disc specific
around a 490mm fork length.

im 6' 1" so yeah i like the top tube length.
anything else? suggestions? additional measurements?

edited

 

[ThePriceSeliger]

What is this frame for? he only thing that I would change would be the HA. Mine is 72 and I love it, but it also feels like a big BMX bike.

 

[basikbiker]

dirt jumping only,

 

[ThePriceSeliger]

Ah I see. Well you're geo seems pretty good.

 

[Cru Jones]

Yeah, you might want to steepin it up a bit. Maybe 70 or 71.

If it was me (I did this once), I'd have a shorter seat tube (mine is 9.5" center to center) and a higher BB (13 or maybe even 13.5).

 

[basikbiker]

edited

 

[Changleen]

Please post lots of pics and details about the build. I am thinking of purchasing all the stuff (pipe bender, welder etc.) so I'd love to know how it goes for you.

 

[GMDesigns]

Congrats on building your own frame!

I'm not sure what your skillset is but if you've never fabricated anything before I suggest the following, irrespective of geometry:


Get comfortable TIG welding thinwall tubing. Very comfortable. Hopefully you can already TIG weld.

Practice mitering thinwall tubing. (No welding experience+sloppy fit-up= very poor results)

Clean your tubes.

Proper weld sequence

Most important: Have Fun!



Please post pictures of your project when you're finished.

Good luck!
GM

 

[yamaguy01]

Be sure to tack every joint together to prevent the cooling of the welds from warping your tube angles. Not sure if it's as big a factor with TIG but it sure makes a big difference with MIG. I'm sure if you plan on tackeling this type of project you must have alot of experience TIG welding so I will just wish you luck and ask to see pictures when you get the chance.

Dave

 

[basikbiker]

im taking the frame building class at UBI, yeah i can tig weld

 

[Hup]

Good luck with the frame. I really want to take the UBI frame building course. Please post a photo of the frame when it is done and let us know what you thought of the course.

J

 

[Mr Tiles]

for you eastcoasters, brew has a pretty good set up:
http://www.brewracingframes.com/id56.htm

 

[basikbiker]

so i got the life size drawing of the frame done up.
HA:70
STA:72
BB:12.75
Chainstay min:16"
and the seatstays and top tube are gonna be in line with each other, so the top tube is realllly low.

 

[basikbiker]

finished the main triangle, its gonna be dope!!

 

[newrider3]

 

[basikbiker]

i dont own a camera. but ill keep quiet till its done. then ill get pics somehow

 

[Savage_Animal]

I like prosses pictures, and i cant belive you are building a frame but dont have a camera