|   sooooo torn.... | red-haze
Oct 29, 2001 10:06 AM | | You folk are killin me with all the sweet bikes for sale right now. I'd be buyin one if I hadn't decided that I'm gonna have to run with disc brakes...which means some kinda chain tensioner...hopefully I can design one that is almost invisible.
I really want a very light ss, my specialized streetstomper is still pretty heavy, and the back axle is bent, which makes setting chain tension a real bear, last ride the chain slipped off an easy dozen times, I don't think the freewheel/hub can take the stress of steep hill climbing with the cog so far out on the freewheel, too long of a lever i guess.
a steel frame would be great, but its gonna need a disc mount, I'm leaning toward a modern aluminum frame that already has disc tabs built in...the LBS has two cannondale F1000 frame/fork combos that he is gonna be lowering the price on shortly, I can deal with the fatty headshocks, kinda like'm for the sanitary look and ability to lock out, fairly light too.
hehehe...a couple of friends have ridden the ss around the block or so and have consistently said "It's gotta nice feel too it...hmmm". I hope they are not just humoring me.
just yappin.
bob
http://red-haze.com |
| Possible options | Single Speed Outlaw
Oct 30, 2001 5:17 AM | | Friend built up a Specialized M4 into an SS. It had disc mounts and perfectly fit a 34x17 gear without a tensioner. Check this link for a calculator to figure what gear you can run without a tensioner http://www.peak.org/~fixin/ Also, Paul's components makes a rear disc adaptor you can use on horz. drop outs and I believe On-One in the UK either has one out or is working on one also. Plus, a few people are making SS frames w/ disc tabs, vert. dropouts and eccentric BBs to adjust the tension. Lots of options to do what you want.
-Joe
www.SingleSpeedOutlaw.com |
| great link! | red-haze
Oct 30, 2001 10:15 AM | | thanks, that will be a great help, trying to nail down a frame right now, the c-dales have kinda fallen by the wayside, various sizing problems, I can use a med-large (16-18") frame. hoping to keep it all sanitary, the paul disc adaptor looks too...oh, i dont' know, not quite right...oh well.
looking for eccentric bb links, haven't really looked yet tho...
bob |
| do you know what year was that M4? | singleminded
Oct 31, 2001 10:52 AM | | I have a 2001 Stumpy M4, size 18", and it doesn't seem to work with 34:17 or any other reasonable gear combo without a tensioner. I'm wondering if the M4 you're talking about has a diff CS length from my 2001 model. My CS is about 16.77"
Thanks. |
| do you know what year was that M4? | Single Speed Outlaw
Oct 31, 2001 11:03 AM | | Not sure, but I'll try to find out. I'm riding w/ the guy tonight. I believe his frame is a 20". |
| thanks -- that would be great. (NM) | singleminded
Oct 31, 2001 12:06 PM | | nm |
| M4 info | Single Speed Outlaw
Oct 31, 2001 8:44 PM | | My friend believes the frame is a 2000, not entirely sure, acquired from a friend through a shop. It's the 20.5" running 34x17 using a QBP Engagement ring up front. He said it seemed to be a bit bigger than the Shimano he tried out. The 18" might have a smaller chainstay. Also, his tension seemed pretty tight when he had a new chain on, so you might need to work that thing one until chain stretch happens. Check the articles on www.singlespeed.cc for some info on the "really tight chain method".
-Joe
www.SingleSpeedOutlaw.com |
| Additional info | Single Speed Outlaw
Nov 1, 2001 6:31 PM | | My friend dug up some additional info and eMailed me, see below:
As for the chainstay question, the 18, 19, and 20.5 (which I have)
Stump M4-Pro all have a 424mm chainstay length. Therefore, a QBP 34T
Engagement ring and a shitmano 17T cog will provide a perfect tension using a SRAM chain
-Joe
www.SingleSpeedOutlaw.com |
| re: sooooo torn.... | andy
Oct 30, 2001 1:51 PM | | Hey Bob, it's andy in portland. long time no ride -- my fault though.
Anyways... about the SS. i've been bitten by the SS bug myself. i converted my hardtail into a SS a couple of months ago. I started out with a 34:17 and a singulator. The singulator does work pretty good. With a regular casette rear hub, a lot of spacers, and i am running a race face bottom bracket which doesn't have a fixed cup, i was able to easily get a PERFECT chainline. The singulator is definately pretty cool if you are stuck with vertical dropouts.
About 2 weeks ago i was using that chainstay length calculator (mentioned in above post) and figured out that if i ran a 34:18 i would just be a couple of MM too long in the chainstays. So i bought a solid axle and shaved it down where it touches the dropouts. In effect i virtually shortened my chainstay by a couple of MM and i was able to lose the singulator completely. And more importantly i got an easier gear, i couldn't push a 2:1 up many hills.
Of course now that it is raining again i really want a real SS frame that is disc compatible. Also with my setup if i have a fresh chain it is too tight -- it works, but it is too tight.
I'm thinking that hardtails w/ disc brackets and vertical dropouts are going to be much easier and cheaper to get ahold of, but then you are going to have to most likely run a chain tensioner. Although that works nice, it just isn't as pretty. Plus i did notice some extra noise from that extra pulley on the singulator. I dunno. One of the more attractive things about a SS for me anyways is that it is clean and simple. Adding a chain tensioner distracts from the beauty of it.
SS Frames with a disc bracket that i know of so far: Jerhico, Ibis, Seven -- vertical dropouts w/ eccentric bottom bracket. Super sweet rides but not cheap.
Phil Wood, Santa Cruz chameleon (their disc mount is kinda weird though, plus i don't want another aluminum hardtail) have basically what amounts to a sliding disc mount to accomodate chain tension.
Hmm.. there were a couple of other frames too that i forgot. I'm not sure what i am going to do. I can't really afford to drop a grand on a nice frame right now... but i'm sick of my tooth rattling aluminum hardtail that is too small and won't fit a 2.3" rear tire and doesn't have disc mounts (can you tell i want a new frame?)... what do i do? Running a 2.1" tire in the winter is really starting to bum me out.
If i could be happy with a singulator, I'd look for a decent steel hardtail with disc mounts. Ultimately... the singulator works... it just isn't as beautiful (IMHO).
Curious as to what you come up with. Singlespeeding is a blast eh? Definately makes going uphill interesting (and occasionally depressing).
Later,
A. |
| WHERE YOU BEEN! | red-haze
Oct 30, 2001 6:21 PM | | Hey! too cool yer doing the ss thing too. I haven't converted the jekyll, yet...tho if I wanted a fs ss I'd use a klein mantra frame, URT includes the bb. I'm bidding on a steel hardtail disc frame on ebay right now, but haven't even met the reserve yet, so I don't know...
OH, new phone number, 360-771-4162, new cell provider.
Riding wed Locally, probably growlers Gulch, and Thursday, Siouxon, may do Chinook and Huffman Peak trails too, definately NOT ss/rigid bikes. Call Me dude, been missin yer funny face!
bob |
| WHERE YOU BEEN! | andy
Oct 30, 2001 7:53 PM | | Yeah i have been wanting to hook up with you and Joel for quite a while but it is always one thing after another. Mainly work.
I'm almost finished with a huge project (couple of weeks left) and then i am going to have some time off... right now it is pretty tough for me to get out during the week if it involves more than a short drive. Planning on doing any riding this weekend? I was considering riding Siouxon on saturday, nothing definate, but definately want to do it.
Are you going there on Thursday for sure? There is a slim chance i can get out on thursday... and i'd have the car that day too. SS is my only choice right now though, so depending on the climbs, maybe it isn't the best idea. I don't mind walking up hills if i am out solo, but i hate to hold up the posse, especially when its cold.
HOPEFULLY in another couple of weeks i'll have a geared bike built up. I finally ordered a new full suspension rig a while back... just waiting... and waiting... anyways i'll be in touch... |
| Spot, Curtlo will do eccentric BB | dgoodisi
Oct 30, 2001 7:49 PM | | I've been looking for a steel frame to replace my aluminum Haro; emailed Spot and Curtlo, both are willing to make a frame with an eccentric bb, vertical dropouts, and disk brake mounts.
I'm sure many others are as well, just ask.
Look for a good eccentric, like on the Seven frames or high-end tandems. The Ibis eccentric is a pinch style that doesn't look like it will work as well. |
| ahh... sweet | andy
Oct 30, 2001 8:09 PM | | You know i had forgotten about Curtlo, thanks for reminding me.
I see what you mean by "pinch style" bb on the Ibis, and agree that it looks a little cheesy. How do they do it on the others? I understand the concept, but not the execution. |
| ahh... sweet | dgoodisi
Oct 31, 2001 11:27 AM | | The "good" eccentrics uses two allen bolts (one on each side) to expand the eccentric against the frame as opposed to squeezing the frame against the eccentric. In the picture below one allen bolt can be seen just above the BB shell. |
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