rolling & trimming to raw length 32' of top tubes, two diameters + two different wall thicknesses, plus making 4" fishmouthed seattube sleeves. Barry the sometimes shop helper pictured. great to have him back in the shop this winter when his biz slows a bit. - Garro.
its been a pleasure reading your smoked out section. you've obviously got the skill and your bikes are fucking awesome, but honestly, you're a cool cat and id be proud and happy to swing my leg over and jump on one of your bikes. personality and coolness is important, and you've got that. everyone @ v digs u.
I honestly can't remember/find if this question has already been asked, so I apologize if it has.
With such an awesome program like BikeCad out there, what advantage/benefit do you find from doing a full size hand drawn blueprint?
Love your work and blog. Keep it up.
Tony
I love drafting, took it all through school. Less computer time in life = better. I'm making it with my hands, I may as well draw it with them too. I can hold parts up to the drawing to check them instantly in real time. I can write notes to myself while I work. I don't fiddle with geometries, I've figured out what I want before I start drawing while building the previous bike - I've been working on bikes professionally for 22yrs. all I need to draw is the front triangle, the CS's are a set length & fixtured in my Anvil fixture, and the SS's are made from scratch. Plus, and this is a big one - when I'm done the client gets the bluprint & they all dig that. - Garro.
Hi Steve,
Can you comment a little bit on downtube thicknesses/strength in your bikes? I notice that (at least in the photos I can recall) you don't use a gusset; is this true for big/heavy guys & 29ers as well as 26" bikes? Does susp fork vs. rigid impact this decision? What kind of wall thicknesses and butt lengths would you consider the minimum for a given weight rider/likely use?
I'm mostly a road guy but am planning to build a couple of MTBs soon and am looking at the options for maintaining/increasing strength at the DT/HT junction.
Hi Steve,
Can you comment a little bit on downtube thicknesses/strength in your bikes? I notice that (at least in the photos I can recall) you don't use a gusset; is this true for big/heavy guys & 29ers as well as 26" bikes? Does susp fork vs. rigid impact this decision? What kind of wall thicknesses and butt lengths would you consider the minimum for a given weight rider/likely use?
I'm mostly a road guy but am planning to build a couple of MTBs soon and am looking at the options for maintaining/increasing strength at the DT/HT junction.
Thanks in advance for any pearls of wisdom!
Best,
John
I don't put out much on tubing choices, but i'll say this: the overall length of the tube will do the choosing for you. there are only a few really viable 29er choices that combine strength with longevity + are long enough with the long ATC + ~ 63mm BB drop that will work {generally 670mm +}. you are not going to find anything less then 35mm & 9/6/9 on any 29er I make, unless it's kind of on the smaller side & rigid, then there is a 35mm x 9/6/7 that works real nice. I'm also apeing Soulcraft & saying "no more suspention corrected forks or frames built for them" void on the warrenty. rigid forks over ~ 440mm ATC are dangerous IMO. They have to be over built, as does the DT or failure will happen {recall that thread awhile back?} you have to get off the fence. rigid or suspention - decide. I also like somthing thicker then 7/4/7 for off road just for dent resistance, unless it's a relly light rider. again, IMO - Garro.
Thanks for the response! I figured 9/6/9 would be pretty much the minimum for the DT, whether suspended or unsuspended. Assume you are saying that if it's a rigid setup you'd consider going even thicker? Also, just so I'm clear, you'll build rigid 29er forks/framesets that aren't susp. corrected so you can minimize the ATC--the size of the 'lever' that's stressing the DT/HT junction, and suspension-compatible 29er frames with tube dimensions like you mentioned, because the suspension should be lessening the stress on the DT/HT junction?
Is there any situation where you do use a gusset? I know there are plenty of pros and cons...just curious what your take is.
Thanks Steve--appreciate your thoughts and the info you continue to share, esp with regard to fillet brazing and fillers/flux. It's all really helpful.
Thanks for the response! I figured 9/6/9 would be pretty much the minimum for the DT, whether suspended or unsuspended. Assume you are saying that if it's a rigid setup you'd consider going even thicker? Also, just so I'm clear, you'll build rigid 29er forks/framesets that aren't susp. corrected so you can minimize the ATC--the size of the 'lever' that's stressing the DT/HT junction, and suspension-compatible 29er frames with tube dimensions like you mentioned, because the suspension should be lessening the stress on the DT/HT junction?
Is there any situation where you do use a gusset? I know there are plenty of pros and cons...just curious what your take is.
Thanks Steve--appreciate your thoughts and the info you continue to share, esp with regard to fillet brazing and fillers/flux. It's all really helpful.
John
you mostly nailed it there, with the exception that I use a thinner DT as the ATC gets shorter - less leverage on the DT. also - think of butting as internal gusseting without the external stress riser........check out the 35mmx750mm supertherm DT. that sucka will love you long time - Garro.
I love drafting, took it all through school. Less computer time in life = better. I'm making it with my hands, I may as well draw it with them too. I can hold parts up to the drawing to check them instantly in real time. I can write notes to myself while I work. I don't fiddle with geometries, I've figured out what I want before I start drawing while building the previous bike - I've been working on bikes professionally for 22yrs. all I need to draw is the front triangle, the CS's are a set length & fixtured in my Anvil fixture, and the SS's are made from scratch. Plus, and this is a big one - when I'm done the client gets the bluprint & they all dig that. - Garro.
I so miss drafting! I just don't have a shop large enough to dedicate the space. Some day! Love your style and simplicity Garro! Do you change your stay length for your... monster randos (for lack of a better term) or do you really keep it where you like it regardless? Thanks!-Chris
I so miss drafting! I just don't have a shop large enough to dedicate the space. Some day! Love your style and simplicity Garro! Do you change your stay length for your... monster randos (for lack of a better term) or do you really keep it where you like it regardless? Thanks!-Chris
you caught me going out the door! a complete front triangle & three wheel builds for today :} The CS length is different for *every* bike.........and, it's always where I like it - Garro.
shipping day - maxxed out on custom wheels. left to right.....DT-Swiss/XT, Velocity synergy x ultegra, Phil Wood x Stan's flows, DT-Swiss x Paul fixed/Schmidt Dyno - some sweet hoops going out to AZ, Wash DC, WA & Chi-Town - Garro.
Do you think there is any merit to the idea of building a 26R - 29F MTB? I like the idea of how well 29's roll but I'm not a fan of the long stays required. Have you done this?
Do you think there is any merit to the idea of building a 26R - 29F MTB? I like the idea of how well 29's roll but I'm not a fan of the long stays required. Have you done this?
dave
Yep. I did one that takes a 26" rear & either a 29 x 3.35" *or* a 26" x 3.7"/4.0" in the front - it lives in Osaka. the guy loves it. Moots does one, too. I think it's a very good idea. - Garro.
I haven't decided yet if I will go rigid or with a suspension fork. Do you have a 29'r suspension fork that you know and love?
Dave
they almost always leave here with either a Fox or a Rock Shox Reba, unless fully non-suspended. Fox was kicking the shit out of everyone on the suspention front, but i have to say - the new RS feel *really* good. the negative air feature really lets you "float" in the travel, and if you want remote lockout RS has you covered. I've sent out a few of the new SID's on 26ers, and man - they are light, feel great, and are simple & easy on the eye. Likely, everyone had to up their game in the last few yrs. Sram has done a great job with RS, if they had not bought them they may be DOA by now - Garro.
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