Know the rules The Paceline Forum Builder's Spotlight


Go Back   The Paceline Forum > Image Gallery > Custom Bikes

Reply
 
Thread Tools Display Modes
  #76  
Old 06-19-2020, 11:58 AM
XXtwindad XXtwindad is offline
Senior Member
 
Join Date: Nov 2017
Posts: 4,878
Quote:
Originally Posted by Spdntrxi View Post
it's all a compromise.. my gravel bike has a BB drop of 70 (which is probably low as I go) change your BB drop and it will effect everything else if you keep angles the same. I think anything from 70-80 is pretty "normal"..70 might be pushing into more cross geo which is my preference.
Geo is fascinating. I'm far from an expert. Here's the geo for my gravel bike. Based on my highly untrained eye, I would say that Joosttx's bike is meant to handle chunkier terrain (no surprise given his proximity to Tam) that his bike handling skills might be better than mine (see previous) or that his body geometry might be markedly different, even though we're roughly the same height. I doubt I would fit his bike given the amount of stand over.
Attached Images
File Type: jpg InkedJB Alliance Final CAD_LI.jpg (62.7 KB, 993 views)
Reply With Quote
  #77  
Old 06-23-2020, 11:02 AM
joosttx's Avatar
joosttx joosttx is offline
Senior Member
 
Join Date: Feb 2010
Location: Larkspur, Ca
Posts: 7,206
Quote:
Originally Posted by XXtwindad View Post
Just saw the geo from the build. Interesting. I'm curious about the BB drop, if I'm reading it right. Looks like 73, which seems to be high for most current gravel bikes. (Mine is 80, for example). Just curious about the rationale. Also, what is the max clearance in back?
I think 73mm is definitely in the normal to low part of the spectrum for bb drop for a gravel bike. If you compare this bike’s bb drop to others manufacturers gbikes bb drop, Santa Cruz, Pinarello, Open, Thesis, Moots for example, 73mm is on the lower side. Specialized Diverge has an 80mm drop.

My bike wasn’t designed to handle what would be considered rough stuff for a gbike that’s what my HT is for. The bike feels very nice on the roads. Honestly, I could careless about bb drop and the like. I really like this bike and it gets me to the places I enjoy beautifully.
__________________
***IG: mttamgrams***

Last edited by joosttx; 06-23-2020 at 12:42 PM.
Reply With Quote
  #78  
Old 06-23-2020, 11:13 AM
thirdgenbird thirdgenbird is offline
Senior Member
 
Join Date: Dec 2012
Posts: 9,331
Quote:
Originally Posted by joosttx View Post
Honestly, I could careless about bb drop and the like. I really like this bike and it gets me to the places I enjoy beautifully.
x2

My main ride is 61mm and it feels fine on dirt trails and on 40mph descents.
Reply With Quote
  #79  
Old 06-23-2020, 01:05 PM
teleguy57 teleguy57 is offline
Senior Member
 
Join Date: Jan 2011
Posts: 2,163
Quote:
Originally Posted by XXtwindad View Post
Geo is fascinating. I'm far from an expert. Here's the geo for my gravel bike. Based on my highly untrained eye, I would say that Joosttx's bike is meant to handle chunkier terrain (no surprise given his proximity to Tam) that his bike handling skills might be better than mine (see previous) or that his body geometry might be markedly different, even though we're roughly the same height. I doubt I would fit his bike given the amount of stand over.
Wow. So interesting to compare geos across builders.

In terms of bike fit are we twin sons of different mothers? Our Alliances are fairly similar, though Erik has me lower and a touch longer. My focus was on the road side of all-road; spec'd for 38mm tire max size. Love my Alliance!

Reply With Quote
  #80  
Old 06-24-2020, 09:00 AM
XXtwindad XXtwindad is offline
Senior Member
 
Join Date: Nov 2017
Posts: 4,878
Quote:
Originally Posted by teleguy57 View Post
Wow. So interesting to compare geos across builders.

In terms of bike fit are we twin sons of different mothers? Our Alliances are fairly similar, though Erik has me lower and a touch longer. My focus was on the road side of all-road; spec'd for 38mm tire max size. Love my Alliance!

I think it's a really interesting discussion, but I don't want to hijack Joosttx's thread, so I'll start a "GD" thread.
Reply With Quote
  #81  
Old 06-24-2020, 12:36 PM
teleguy57 teleguy57 is offline
Senior Member
 
Join Date: Jan 2011
Posts: 2,163
good point. thx.

Back to Bingham!
Reply With Quote
  #82  
Old 06-24-2020, 06:26 PM
joosttx's Avatar
joosttx joosttx is offline
Senior Member
 
Join Date: Feb 2010
Location: Larkspur, Ca
Posts: 7,206
Quote:
Originally Posted by teleguy57 View Post
good point. thx.

Back to Bingham!
BTW your bike is one of my favorites. I love it.
__________________
***IG: mttamgrams***
Reply With Quote
  #83  
Old 07-05-2020, 09:02 PM
jtakeda jtakeda is offline
Senior Member
 
Join Date: Oct 2010
Location: 707
Posts: 5,558
This bike is fantastic. Every detail is dialed very curious to see it built up in fender mode when the time comes.
Reply With Quote
  #84  
Old 07-10-2020, 07:37 AM
crownjewelwl's Avatar
crownjewelwl crownjewelwl is offline
Senior Member
 
Join Date: Oct 2009
Location: live and direct from the 914
Posts: 2,322
Quote:
Originally Posted by joosttx View Post
The brakes are really rad looking and function great. I have been told by several that they are not happy with sram disc brakes. I have heard others don't have a problem with them. I have heard very good things about Hope brakes. I used Hopes in the past and they worked great. So that's the logic. I am pleased I have them.

Whole Athlete built the bike up except I wrapped the handle bar tape. I have also switch seat post and saddles to save a few grams.
is there a market for sram calipers?? i just ordered some hopes!!
Reply With Quote
  #85  
Old 07-10-2020, 09:05 AM
72gmc 72gmc is offline
what's a little rust?
 
Join Date: Nov 2005
Location: the home of the Huskies
Posts: 3,263
Joostxx—how is the seat tube angle working for you? Is it steeper than your past drop bar bikes?

Our size is in the same ballpark, and I’ve only tried steeper than 73 on a mountain bike for a demo ride. I was surprised at how much I liked that little bit of forward rotation relative to the bb, not just for the trail but for the asphalt on the way to the trail.

Last edited by 72gmc; 07-10-2020 at 09:07 AM.
Reply With Quote
  #86  
Old 08-22-2020, 04:02 PM
cyan cyan is offline
Senior Member
 
Join Date: Apr 2017
Posts: 434
Beautiful bike. What's the crankset used? And how well does 1x work for road riding?
Reply With Quote
  #87  
Old 08-23-2020, 04:14 PM
joosttx's Avatar
joosttx joosttx is offline
Senior Member
 
Join Date: Feb 2010
Location: Larkspur, Ca
Posts: 7,206
Quote:
Originally Posted by cyan View Post
Beautiful bike. What's the crankset used? And how well does 1x work for road riding?
Thank you! Sram red is the crankset I’m using. The 1x is fine or adequate on the road although I wouldn’t recommend it if you plan to do lots of road biking.
__________________
***IG: mttamgrams***
Reply With Quote
  #88  
Old 08-26-2020, 02:52 PM
cyan cyan is offline
Senior Member
 
Join Date: Apr 2017
Posts: 434
Quote:
Originally Posted by joosttx View Post
Thank you! Sram red is the crankset I’m using. The 1x is fine or adequate on the road although I wouldn’t recommend it if you plan to do lots of road biking.
Great to know, thanks! Planning an all-road for more road than dirt, 2x seems to be the way to go. What kinds of off-road terrain can be reasonably tackled with 1:1 ratio in your experience, e.g. in Marin headline and Mt. Tam areas?
Reply With Quote
  #89  
Old 09-15-2020, 11:37 AM
brewsmith brewsmith is offline
Senior Member
 
Join Date: Aug 2015
Location: Denver, CO
Posts: 1,675
Quote:
Originally Posted by joosttx View Post
Thank you! Sram red is the crankset I’m using. The 1x is fine or adequate on the road although I wouldn’t recommend it if you plan to do lots of road biking.
Sweet bike! PM'd with some questions for my own Bingham build

Last edited by brewsmith; 09-15-2020 at 04:29 PM.
Reply With Quote
  #90  
Old 09-15-2020, 11:47 AM
Eli Bingham Eli Bingham is offline
Senior Member
 
Join Date: Jan 2018
Location: This is a no biking trail, California
Posts: 483
Quote:
Originally Posted by cyan View Post
Great to know, thanks! Planning an all-road for more road than dirt, 2x seems to be the way to go. What kinds of off-road terrain can be reasonably tackled with 1:1 ratio in your experience, e.g. in Marin headline and Mt. Tam areas?
I think Houston and I may have different opinions on this, but I currently have a 2x AXS setup with a 46/30 rotor crank and a 10-33 in the back. On 700c wheels, I find the 30 x 33 low gear not nearly low enough for many Marin dirt climbs, and definitely avoid certain routes because of it.

If you're familiar, this gearing is barely low enough for the Deer Park climb on the south slope of Tam, but way too high for the Rock Springs climb from Ridgecrest to Laurel Dell, too high for Eldridge, too high for the Dias Ridge climb, ridiculously high for Middle Green Gulch. It works fine for something like Old Railroad Grade.

Eventually I'd like to switch to the 2x wide gearing Force AXS setup, which offers a 30 x 36 low gear, but it's nearly $1000 to replace the relevant parts, and I already enjoy the bike in most places. There's also the reasonable question that if you're regularly climbing such steep-ass, rough fire lines, you're probably better off on a mountain bike for those routes, given that you usually have an equally steep and rough descent ahead of you (which I've personally found to be the case).
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 07:48 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2021, vBulletin Solutions, Inc.