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Flat bar gravel frame I am considering the idea of building a flat bar road/gravel bike, but am having trouble with the geometry of my options.  Road/gravel frames have a short reach/TT because the long stem and drop bars lengthen your torso to where it needs to be.  My hoods are 130mm farther out from my stem.  I could make that up through a combination of longer TT, longer stem, and conceding a little distance.  However, the only easy way to get a longer reach is by buying a mountain bike frame.  Ignoring all the minor problems with that, the lack of support for large chainrings is a deal breaker. 

So back to gravel frames.  Something with a sloping top tube and the shortest seat tube...then buy the largest size so I get the longest reach/TT possible.  There isn't anything obvious that makes the math work well.
September 02, 2022, 07:44:42 PM 		1
Re: Looking for 19" 29er HT, threaded BB, 100mm fork geo, 1000-ish grams
Quote from: danK on June 30, 2022, 03:11:12 PM
I've seen DIYCarbon frames for $425 USD: https://www.diycarbonbikes.com/collections/hardtailframes/products/2018-29er-dcb-xc27-carbon-mountain-bike-frame.
Haven't looked at eBay or PB classifieds. Being away so long it gets confusing trying to catch up on the options. The DIY site has the SC Highball clone and they mention" comfort, but the last Highball that I demo'd years ago was anything but comfortable. Maybe the new open mold version is?

I built up the Highball frame earlier this year and the result is a very compliant ride.  However, I can't tell how much of that is due to the frame and how much of that is the seatpost.  I used their lightweight post (I am 160lbs) and it's 1cm from the max line, so this maximizes flex.
October 18, 2022, 11:03:49 PM 		1
Re: Max tire width FM936 & FM909 Wing at Carbonda sent me these dimensions for FM936 and FM909 frames.  They list some dimensions around the tire area for both seatstays and chainstays, but most of the widths are missing, and it is unclear what the clearance is expected to be above the tread.  Wing said the standard is to allow for 6mm of clearance to the tire, which is where their max widths come from.

2.35" = 59.69mm
2.40" = 60.96mm
Diff  =  1.27mm
March 31, 2023, 09:52:19 AM 		1
Re: Max tire width FM936 & FM909
Quote from: Eneen on March 11, 2023, 02:18:39 PM
From drawings 909 has bit more clearance than 936. When I get my 909s I can check it thoroughly.

Did you receive your 909 yet?
May 18, 2023, 12:36:24 AM 		1
Re: Carbonda fm936 Thoughts
Quote from: Kactusdog on June 10, 2023, 02:57:26 PM
Yes, Wing shared it with me, along with some other helpful info I requested:



I was interested in seeing how well they preserved some of the original geometry with the 120mm option.  They claim the same HTA and STA, and a 35mm BB sounds low for an XC bike, but still reasonable.  However, the fork axle to crown is 520, which is more like a 110mm fork.  Put a 120mm (or even 130mm) fork on there and the BB drop is going to be even less.  The FM1001 BB drop is only 28mm, which is low for even a trail bike, but I have not seen any complaints yet.
June 18, 2023, 06:15:06 PM 		1