Showing posts with label shimano nexus 8. Show all posts
Showing posts with label shimano nexus 8. Show all posts

Sunday, July 21, 2013

Down Trails and shaded glens


I've been riding, just kind of low key instead of outright hyper on the bike culture-thing like I was last year.

Zwartehond, my Workcycles / Azor   Kruisframe/Pastoorfietsen has some updates, after correspondence and business with Henry Cutler.  Gone is the ridiculously heavy and complex Nexus 8.  Instead mounted is a SRAM automatix, a 2 speed hub that jumps from 100% direct drive to 131% or so, once the rear wheel is spinning around 11mph.  The Automatix also features a coaster brake, and is not particularly heavier or larger than the stock standard Shimano CB110 coaster hub.  Supposedly the Automatix is based on the older Fichtel and Sachs, and is generally designed to last forever.  I'm liking the simplicity.

The crank went down to 38T and I upped the rear sprocket to 23, so everything is nice and easy to pedal at in the 100%.  Front nexus rollerbrake is retained.  I added a Travel Agent to use more classy looking Velo-Orange levers.  Grips changed for coke-bottle. Crane bell added.

Gotta be about 10lbs lighter at least. Also removed the cafe-lock, as I don't operate in a particularly high crime area. I can use the cable, or U-lock or even still attach the cafe lock, depending on circumstance required.

I took the trail north for 40 miles last Sunday, to check my endurance. Of this only 1/3rd of the total 83 miles was paved.  Gravel, or even just grassed double-track got old pretty quickly.   Lots of food, lots of fluid.  My butt was sore, by the end of the ride, and I courted bonk at one point.  My Garmin GPS said I burnt 3311 calories.  Yow!

I originally intended on taking my new bike, a Virtue "Ortho" on Ragbrai, based on the assumption I'd lose lots of weight this summer, getting back down to a trim 135-140.   Yeah, didn't happen.  Still 190ish.  So Zwartehond it is, self-supported.  To increase cargo carrying, I purchased a Carradice Nelson Long Flap, and moved it to the aft position, moving the Carradice College up front.

This bridge could probably still carry a model-T, which was the car en vogue when it was built. Nowadays...

Carrying the bare minumums, Tent, Amana 6pt wool blanket, waxed chore coat, camera, film, tool kit, 2 pairs Wool knickers and Linen shirts, stockings. few toiletries, lights, a book and a sketch book, opinel, some soft canteens, powdered lemon, sugar, a good book, and whatever ad-hoc snacks I score en route.

'Was initially planning on doing the whole week of Ragbrai, but driving all the way out to Council Bluffs, and then suffering an 85 mile 4000ft climb day in the sun-blasted west prairie seems more like an exercise in masochism.   So I'm just going to pick it up in much closer Des Moines, and ride the remaining 4ish days.

 Hopefully I won't get completely zoned out, while being surrounded  in the sea of lyrca.

One of the things that bugs me about Ragbrai, is that the course hours are generally 6am to 6pm. 6am is fine-  but in July, in the midwest, it is essentially still light to 9:00pm and typically cooler in the evening.  Seems like they should be encouraging mid-day siestas and evening riding.  Oh-well.








Tuesday, December 4, 2012

Persistence of Pigeon

Just sort of touching base, but I continue to ride my PA-02 Flying Pigeon more than my other bicycles, and the more I do, the more I am aware of  how oddly "right" it feels.  I was considering putting on a three speed IGH hub in the back, but now I'm not so sure. According to Sheldon Brown's Gear inch calculator, I'm running around 56" and basically I climb on the bike and go.  My daily commute features a few gradual hills, and one steep 20% grade climb 50 feet up onto a former railroad embankment.   I'm not out of the seat for this.
Sunflowers from the backyard - back in September. Actually this is kind of neat:   They were last planted three years ago.  Now the chipmunks have them coming up all over the place. 
Admittedly I top out at a pokey 13mph, at a comfortable spin, but on the miles of crushed limestone trails, and suburban back streets this speed feels entirely fine.  The responsiveness of the single speed drive train is terrific. Or, maybe it just feels natural?   In comparison, the Nexus Inter 3 on my Felt Cafe, and Nexus 8 on my Workcycles/Azor Kruisframe feel lethargic, disconnected and full of friction.

When I got the Pigeon, I repacked the wheel bearings out of curiosity of the process when I was assembling, it, and waiting for other parts to arrive. I also later upgraded to the 20 tooth 3 pawl BMX freewheel.  Now the wheel is tight in the stays and on the bearings, no slop - but I can spin it with one stroke by hand, and it keeps going for almost a minute Neither of my IGH bikes can do this.

There is some sort of mystic British Raleigh Perfection here even when executed as a Chinese knockoff.

Not that the Pigeon is entirely trouble free - Yesterday evening, before my ride home I checked the crank tightness, and found that the cotter on one was  a bit loose and notchy. (I had dismissed it as the slightly crummy MKS 3000 pedals)   I rode it home carefully and then hammered the cotter in with a few good whacks, seating it further and tightened the cotter nut. Problem solved.  Also, I finally found 5mm hex head screws to replace the nearly stripped originals for the rod-brake clips at the local hardware store.

So I'm thinking about simplifying the Kruisframe a good bit, maybe try the very efficient SRAM automatix 2 speed hub on it, strip the bike down a little bit.

It is interesting, how perceptions change with experience.  I was thinking about getting a 10 speed-ish road bike next year, possibly to do Ragbrai with, and then a few months later, I was thinking about just 3 speeding it with a front derailleur and Paul Melvin tensioner...     now I'm realizing that I can just go all day on a single speed.

Friday, May 25, 2012

Last Weekend Rides

Zwartehond and the wind turbine
I should probably get around to documenting these things when the weekend is still occuring.  Last weekend was enjoyable. My old-timey seatpost pillar and Brooks B.72 arrived, just in time to get Zwartehond out for a charity ride, most of the ways down to the end of the Cedar RiverHoover whatsit trail.  Zwartehond got quite a bit of attention, I also thought that the days of wine and roses were over, when the Nexus 8 hub started to act erratically. It just spun in third gear, and seemed to centrifugally clutch out of first into something like 6th.  At the turn-around control which happened to be a pub, I opened the chaincase and tried to remember anything relevant about the Nexus8 settings. Everything looked normal, but then, I had never read the service manual.  

As I departed, full of dread about having to bike with a failing gear system  20 something miles back to town and then home, I noticed the shifter-  the cable had bounced 3cm or so out of the adjusting barrel. I re-secured it, and everything started operating fine.  Seems like the shifter could be a little more durable. I should research if there are more austere metally ones- yes, that's right, I'm jealous of those old Sturmey Archer 3speed hub shifters.

Also, I really haven't been consuming alcohol much at all lately. So when I got to the control/Pub and had a pint and a half of Guiness, I expected to end up a little too buzzed to immediately return to bicycling. Nope. It bounced right off me.  I'm still not sure how that happened. Mind you, I'm still a neophyte when it comes to this cycling and drinking thing.  I'll confess, the fervent behavior of roadies and RAGBRAI clubs for alcohol is distressing to me.  I've had friends and family with drinking problems, and I guess I'm a little soured on it all. 
Lots and Lots of Bikes Actually!

I had a leisurely ride back to town, and had a little lunch at the Parlor City pub. Then a leisurely bike back north. I detoured to see if a biking enthusiast friend was at his house, but he was out. Ah well, just more miles. :)