End of the 90's

That's right, I'm out of blogger.  Only about 20 years later than everyone else too!

Since there just no good support for easily posting here via iphone, I've been just using my Bob Brown Cycles Facebook group for the occasional pictures of thoughts I want to get out.

So if you came here looking for posts, try this instead

https://www.facebook.com/Bob-Brown-Cycles-262957483726014/posts

See ya over there!

Bob

Number 1, first frame I ever built

Snow!

Finally, snow that might stick around.  Hilly chilly event at whitetail will be on snow this weekend.  Be sure to stop by with your fatbike!

58 cm beautiful crosser for sale!

So I posted pics of this earlier and now it's for sale.  This was a customer's bike which I was planning on keeping for myself but I've come to grips with the fact it's a little too small for me.  I knew it was but it's just sooooo pretty that I wanted to keep it!

Here's your chance to get a stainless steel lugged, S & S coupled super cool 'cross bike.  It's a 58cm square frame with pretty much straigh tup cross geometry.  73 seat angle, 72.5 head angle.  Clearance for huge tires, the photos here have 32c tires installed, I think it'll fit about a 40c.

Candy blue paint in incredible in the sun.  The paint is about a 9/10.  I can send more pics if you're serious.

Frame is dedachai zero, so it's very light.  This isn't a frame for a huge out-of-the-saddle cranker, it's definitely build for a more of a spinner as it's not the stiffest frame around.  However it's incredibly comfortable on rough roads.  I've been using it as my gravel road bike and I love it (other than it's a little short for me).  Very comfy light steel ride.

Has removable canti posts and disc mounts front and rear, so run whatever style you like.  Currently built up with Campy record 10/ Ritchey cranks, bar & post with a nice nitto stem.  I'd prefer to sell as a frame/fork, but all parts are negotiable or I can build it up with a new kit for you at great prices.

Gimme a shout if you're interested.  I'm thinking around $2000 is fair for the frame/fork.  I'd charge about $4000 for this new and you'd be waiting a year to get it.  So if this is your size, here's a great shot at a like new frame immediately.

Cross

Just finished up this looker!

Stainless lugs and my super cool hidden coupler install.

purple

I guess it had to happen sometime, painted a Prince Tribute bike:

This one isn't one of my frames though, it's a Pivot 429.  Everything got deeply coated in pearl white, then the main frame got a bunch of purple candy coats.

Pivot linkages and logos are all pearl white, then I polished out all the pivot hardware.  Black fasteners just didn't look right on this one!

Up next, more fancy paint but on one of my frames...

2 bbc's on ebay

There happens to be 2 of my older frames on ebay at the moment.  I don't have anything to do with the auctions nor do I know the sellers.  Just passing along the word.  Potentially great deal on a 29er:

http://www.ebay.com/itm/Bob-Brown-Custom-S-S-Coupled-29er-Mountain-Bike-chain-or-belt-drive-/121996013119?hash=item1c67876e3f:g:EFsAAOSwR5dXRDTd

http://www.ebay.com/itm/Bob-Brown-Custom-SS-Coupled-Sport-Tourer-F-F-HS-Stem-BB-/222105660113?hash=item33b6876ad1:g:KKgAAOSwubRXJ75R

Minnecycle 4

Coming this weekend: Minnecycle 4!

https://www.facebook.com/events/1707996702804854/

Come on out and support your local framebuilders.  All the builders in the twin cities will be there.  Sat and Sunday, with a ride Sunday morning.

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Curvy tandem

My current project is a rather unique tandem frame. Theres a lot of sweeping bends and different features. This is a preset prime example of what true "custom" frame building is about!  

Here's the main tubes in the front triangle. 

And here's my mocking up the dual rear laterals/ seat stays.  The frame has clearance for 3+" tires, so all the stays have nice curves. 

It will be a Rohloff bike with S&S couplers in those curved tubes. We're building it with dual eccentrics and Rohloff oem sliding dropouts to allow better be height adjustment when running different size tires. 

More pics to come soon!

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web people?

So I'm looking to refresh my website as it's getting pretty dated.  Not necessarily a whole overhaul, but I have some ideas which are beyond my ambition level and available time.  Anyone out there doing web design interested in some bartering for bike work?

email me if so.

In the meantime, I've managed to break myself again..  Collarbone this time, from a little mtb issue.  Good news is it's a mild fracture and should heal up without surgery just fine.  It's already showing big improvement in 1 week.  My stiff back is the main issue now, I landed pretty hard on my head (smashed the helmet...) and have a lot of back muscle kinks to work through.

I don't tend to think of myself as disaster-prone, but I'm starting to reconsider.  I added it up and since I was in high school I've broken 9 bones!  Granted 5 of those were in the big accident in 2003, but that's a lot of bones to heal.  No wonder I get achy in the winter.

Back to resting...

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Finished tandem pics

Finally have this beautiful fully lugged tandem frame finished. The customer is providing most of the components, so I don't have complete bike pics, but these are pretty good. 

The paint is a very nice pearl cream color, really classic with the hammered fenders!

The large hole at the end of the chainstay is for Di2 wiring. 

I kind of wish this one was mine!

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Painted

Finally have paint on this great looking tandem. It's a pearl cream color with brown logos. 

Tandem start

I've got a good start on the next tandem this year (it's a big tandem year for me). This one will be lugged with S&S couplers and no lateral tube. 

Making lugs is the start. Here's the captains seat lug getting made from raw tubing:

I take pieces like this and turn them into a lug

 After some brazing and a whole lot of carving it looks like this:

Here's the whole set of lugs:

Installing couplers is next. 

Not very bike related

Well, it's not a bike, but many of you who know me know I'm also car guy.  I'm thinking about putting my baby of 17 years up for adoption:

It's a 1992 Sunburst yellow miata which I've owned since 1998.  The list of upgrades is pretty long as it's been my project for 17 years.  The condition is phenomenal, particularily for a 23 year old car.  All paint is original and in excellent condition other than the lower front air dam which has some rock chips.

114,000 miles which for a 23 year old car is mighty low.  Compression on all 4 cylinders is right at OEM spec (I'm happy to measure it for serious buyers).

It has a Jackson Racing M45 supercharger with Big Boost Kit and a slightly turned down nose pulley on the blower providing about 9psi of boost.  The Supercharger system is very well sorted out, meaning this is my summer daily driver and requires no special attention.  The only quirk is on cold start-up occasionally there is a small throttle waver until you start driving.  I can provide video of it for serious buyers, but it's truly a non-issue just want buyers to be aware.

Timing control is done by a Bipes ACU unit, additional fueling is provided by rising rate fuel pressure regulator with JR BBK black box controller, high flow fuel rail and larger 254cc injectors and of course a higher pressure fuel pump (part of the JR kit).  Also has an O2 clamp.

Here's a more complete list of upgrades:

JR m45 supercharger kit
JR BBK kit
Bipes ACU
High flow fuel rail and injectors
Roadster sport stainless exhaust with OBX header
DDM works air intake heat shield
Innovate Motorsports LC-1 wideband Oxygen sensor and controller/guage
Flyin' Miata stage 1 clutch (best feeling high clamp force clutch out there!)
ACT lightened flywheel
Autometer boost guage (and LC-1 guage) mounted in custom stainless surround in dash
KYB GR-2 shocks, new this year
969 Racing 6UL 15" wheels with Toyo Proxies and Mcgard spline drive lug nuts.  Mounted, balanced by Goodwin Racing.  Very good tread left, best tires I've ever had on the car!
Hard Dog Duece roll bar
Robbins sunfast canvas top with glass window (new in 2013)
Voodoo shift knob
IL Motorsports center console (best cupholder and center console available!)
Leather shift and brake boots
Chrome shift boot and vent trim rings

It's a blast to drive and is daily driver reliable.  It's never been raced or driven on a track, I just like a fun road car.  Performance-wise, if you wanted to get faster the next logical steps would be intercooling or water injection and then a stand-alone ECU,

Condition is great.  The car has been waxed more times than it's been driven in the rain.  Never seen snow, it's garaged every winter.  If you're serious, let me know and I'm happy to share more details.

I'm thinking around $8000 seems fair based on the condition and upgrades.

Thanks

Bob

fat review

I've been meaning to write a summary post of my first winter of fat-biking for a while.  Now that spring is pretty much here, I'm finally getting around to it.  This winter was pretty terrible as far as MN/WI snowfall went.  Usually I spend the winter xc skiing but there just wasn't snow so I opted for fat biking.  I have to say it was the best move I could have made.

People who know me know I've been pretty skeptical about fat bikes in general. Every one I had ridden felt like a big, slow, clunky bike with a horse riding-esq pedal position.  My goal with building this bike was to overcome all those.

I feel the biggest single problem with most fat bikes is simply the ridiculously wide BB which positions the riders feet too far apart for efficient pedaling.  I knew from the start I wanted this to feel racier for hard-packed trails (ie White-tail ridge). It's not meant for all day trekking through deep powder,

For those reasons I limited the tire size to a 4" tire on a 80mm rim, that's plenty big enough for hooking up on anything other than deep unpacked stuff.  I also knew I would be fine with a single front chainring.  1x set-up's have gotten so good now I just couldn't see a need for a front derailleur.  With those constraints I did some detail design work and researched cranks.

Most modern MTB cranks flare the arms out much wider than needed for reasonable frame designs, normally I hate that feature as it makes the Q factor unnecessarily wide, but for this application it's an advantage.  All that extra flare leaves room to move the single chainring further outboard and still allow the chain to clear the crankarm.  With some custom machining I was able to move the single ring about 1cm further outboard than stock.  That combined with a 170mm rear axle spacing and some very heavily shaped chainstays I was able to cram it all in there:

Standard 73mm BB shell with Sram X1 cranks, 4" tire on a 80mm rim, full 10 speed cassette, and the chain clears the tire in all gears.  There is about 6mm of tire clearance to each chainstay and 4mm to each crank arm.  In a nutshell, it's very tight but it works!

The geometry is also more mtb-like.  A little faster front end handling, lower bb drop.  Between the lower drop and narrow q factor it feels pretty much exactly like you're riding a 29'er just with a lot more float and traction!  It's not just me, everyone that has ridden it says they're shocked how much it feels like a "normal" mtb.  

The trade-offs are the tire width limit, but for packed trails it works great.  If you like to wear loose pants, they may rub the rear tire since your pedals are closer to the tire, but with tights it's not an issue.  Lower drop would make your feet drag in deep snow in the powder, but as I said it's a packed trail bike.  I think for it's purpose, this design cannot be beat!  It's completely changed my notions about fat-bikes.

Just my humble opinion : )

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