Sloping top tube?

Not to be whatever (as in look at my hipster ride), but my new frame has pretty much that same geometry as the original post (well very similar with the sloping TT). It’s a little stranger though because TT is 57cm and the ST is about 54cm. It has 700c wheels front and rear and doesn’t handle any twitchier than my other normal geo’d track frame (NJS Samson) despite the pursuitness of it. Riding it with risers is extremely comfortable.

You geo here looks good.
http://www.lfgss.com/post1146067-53.html

This is it, hopefully once done:

1 Attachment

^That answers my next questions.

Are you running drops?
Will you have brake hoods on these?

If you have copied the basic geometry for a bike designed with flat/riser bars in mind, but will be running drops and hoods, you may find your top tube is too long.

Do you know your ideal stem length, or have you just 'dialled in' stem length to your bike in the past?

It all has an effect.

Good luck.

(ED: What programm did you use for the geo pics http://www.lfgss.com/post1146067-53.html.)

Its BikeCAD.

Easy and free on that their interweb

[QUOTE=Smallfurry;1147018

Are you running drops?
Will you have brake hoods on these?

If you have copied the basic geometry for a bike designed with flat/riser bars in mind, but will be running drops and hoods, you may find your top tube is too long.

[/QUOTE]

Good points. I switch between drops and risers so having a frame made specifically for one would not be a good idea for me so I would need to compromise the TT, although stem lengths can accomodate but that does affect handling.

Not easy is it :-)

Its BikeCAD.

Easy and free on that their interweb

Oh.

I've been using BikeCAD, for my XACD museings. Obviously not very well.

Good points. I switch between drops and risers so having a frame made specifically for one would not be a good idea for me so I would need to compromise the TT, although stem lengths can accomodate but that does affect handling.

Not easy is it :-)

I think if you designed your frame with a ETT which was half way between the two. Then bought separate stems for each bar. You'd have a decent set-up.

^That answers my next questions.

Are you running drops?
Will you have brake hoods on these?

If you have copied the basic geometry for a bike designed with flat/riser bars in mind, but will be running drops and hoods, you may find your top tube is too long.

Do you know your ideal stem length, or have you just 'dialled in' stem length to your bike in the past?

It all has an effect.

Ideally it would be to change between drops and risers(?), but no, I did not just copied the geometry of the DAMP bike, and sticked on some stem.
My ideal stem length is 90mm (58cm TT), same as pictured; what I did so far, and I repeat that this spec is not to be followed to every inch, it is a guide for what i need/want asked by the builder.
I will have to do everything by phone/email so bikeCAD is one hell of a tool to work out visually what your ideas are, (even if you have no fcking idea : ), it's really user friendly).
I do know these are deep waters i'm trying to swim in, but I really want to learn about my shit, even if it has to be the hard way (...and obvs. with help from Forumengers wisdom), and the builders will have the final word on every bit.
The numbers used here were taken from, what I understand to be, my perfect frame size.
My torso is really long for my height, longer than my legs.. so a long TT is required.

Ideally it would be to change between drops and risers(?), but no, I did not just copied the geometry of the DAMP bike, and sticked on some stem.

I was'nt trying to critisize or put a dampers on things. Most of the people I've talked to who have gone down the custom route, have based things on an existing frame, and just tweeked things (its not copying its flattery). I reckon as long as you have the fit down, go for it.

My XACD plan is based on this design.
http://img370.imageshack.us/i/giuda09copiajy0.jpg/
with this geometry.
http://bicycling.com/blogs/thisjustin/files/2009/09/2010_vamoots_rsl_profile.jpg
A titanium frame with a ISP may be a bad idea, but but feck it. I'm so short I barely use a seatpost anyway.

I was'nt trying to critisize or put a dampers on things. Most of the people I've talked to who have gone down the custom route, have based things on an existing frame, and just tweeked things (its not copying its flattery). I reckon as long as you have the fit down, go for it.

My fault here, wasn't taking it as criticism, or at least not in a pejorative way*... don't want to give that idea anyway. All comments are welcome!
*(interwebz...) : )
I am in fact a bit worried for doing all of this from a distance...but they will always have the final word, and it'll be reviewed by the experts, so 'tis all good there.
Really like your choices there^^, Ti frames give me the horn, but my wallet doesn't give a flying fck about that.
I was told that by the builder that the choice of Aluminum (Easton), would be cheaper than steel (Reynolds, Columbus or Vitus GT)...now, I'm aware of most diferences (pros&cons) of Aluminum vs Steel, but in case of choosing Aluminum, would that be compromising too much? (Rigidity-wise)

nuknow

it might be worth visiting a fitter like bikewhisperer, i think scherrit will also be able to help you a little with geometry/fit and you will then get a comfortable usable bike

Will see that for sure, I want to gather loads of info before doing this.
Much appreciated.

Thanks DJ... you saved my night, tonight!
(had to say this)*

Ouch!... bikewhisperer is £95 for a (2.5h) session.. : o

I was told that by the builder that the choice of Aluminum (Easton), would be cheaper than steel (Reynolds, Columbus or Vitus GT)...now, I'm aware of most diferences (pros&cons) of Aluminum vs Steel, but in case of choosing Aluminum, would that be compromising too much? (Rigidity-wise)

Depends on what you want, ride wise. Alu frames get a bad rap, because most of the low end frame-sets are alu. Doesnt mean you cant make great frame out of it. So its no comprimise at all, just personal choice

I like steel, but aspire to titanium ;)

Is the builder giving imput on tubing dimensions?

With the right tubing selection you can tune the bike to your weight and power.

Can you get one of those bike fit sessions where you sit on a jig made up to your angles to see what it feels like?I know you wont know what it will ride like but you will get lengths of tube and toe overlap etc sorted.Try cyclefit dont know what it costs though

I remember seeing one at TdV, and i'm pretty sure that 14 has one as well.
Will check that out.

Yes, and it was certainly very flexy.

Fuck yea. The fork was crazy flexi. CRAZY I say. CRAZY!!!

used the bike cad website, is great.

Well done!

Bump.... get a more comfortable ride ...

Anti-flame suit is on

no flame. but... 'comfortable'? i'd get an 'omafiets' ;)

nice designs guys

^Has been emended.

nuknow
it might be worth visiting a fitter like bikewhisperer, i think scherrit will also be able to help you a little with geometry/fit and you will then get a comfortable usable bike

What the fuck happened when I was in Oz??? Since when did DJ recommend anyone but cyclefit?! Let me guess.. he's also sold all his Rapha and now wears head to toe Assos???

Ouch!... bikewhisperer is £95 for a (2.5h) session.. : o

That's not even £40/hr and you're talking about building custom bikes without a fitting?

That's not even £40/hr and you're talking about building custom bikes without a fitting?

Not at all... I just can't bring the costs to that level. Simple.

^Has been emended.

Is that changed to the 73 STA/ 73 HTA one?

On a 58cm ETT frame you could shorten the wheel base some by going 72.5 STA, 73.5 HTA.

Just a thought :)