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Old 09-03-10, 01:37 PM   #1
adlai
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Bought a Downtube!

putting on the final adjustments...

So of course there are some modifications I want to make.

1. do there exist bar ends that swoop around like road-bike drop bars?

2. Might want to get a more comfy seat, something with springs

3. Fenders, I don't quite get the rear fender since it doesn't really protect against spray...at all. Can it be moved to the front? What are some good fenders that will fit on it?

4. yeah, the foam grips are annoying.

5. at some point I might swap out that front suspension fork. Could any bmx fork do?

6. Actually...what's holding me back from installing say, 26 inch tires?

Last edited by adlai; 09-03-10 at 01:41 PM. Reason: mor ethoughts
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Old 09-03-10, 01:44 PM   #2
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Which model did you get? I have been looking at the nova 7 sp recently.
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Old 09-03-10, 01:50 PM   #3
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congrats, I started a thread with the same title not too long ago. Which model did you get? Picture please?
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Old 09-03-10, 06:04 PM   #4
adlai
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More detail:

It is a refurbished Downtube 8H, front suspension, sturmey archer 8 speed.

Let's just say that I got it for not much more than a sturmey archer 8 speed hub and shifters alone would cost.

Got it all assembled, tires pumped, etc.

I like it! It gets moving pretty quickly. Yes, it's noticably slower than my cyclocross bike...and I'd say that with just me on it, it feels like my fantom cx does when it has a substantial load, but for city riding speed really isn't important anyways.

I'm seriously considering using this as a winter bike, esp with the IGH hub, and some niceties like folding pedals, which I found were pretty solid, and useful for when you're walking around and don't want the pedal to hit your leg.

Speaking of the IGH, it does take some getting used to, esp not pedaling into shifts. But, it moves gears pretty quickly and painlessly, and it has a good range of speeds. It gave me the most problems around 5, but when an IGH slips, you're simply put into 1st gear until the clutch or whatever activates. All in all, I'd say that while it doesn't shift as well as a clean cassette system, it shifts better than a dirty cassette system.

It does have a "grinding" effect on some gears, which is sorta like a bad bottom bracket, but really it's not something I'd notice on a daily basis unless I were depressed or something.

I think I know why it was returned, the front shock I couldn't adjust, but again, no big deal. The front shock has a pretty good range of travel too, making it somewhat useful for jumping curbs (I've gotten my share of flat tires from curb jumping).

But yeah! this is a fantastic second bike and/or city/utility bike. Highly recommended.
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Old 09-03-10, 07:00 PM   #5
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Quote:
Originally Posted by adlai View Post
1. do there exist bar ends that swoop around like road-bike drop bars?
Here you go... http://www.amazon.com/Origin-Bicycle.../dp/B0013G6PB8
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Old 09-03-10, 07:50 PM   #6
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Downtube sells a bmx style fork for about $35.
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Old 09-03-10, 09:23 PM   #7
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Wow. That's one of the models I tested recently. Loved the solid feel of it. Now it seems to be out of stock, no word yet on when it'll be available again (if ever.) Where'd you get yours?
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Old 09-04-10, 01:18 PM   #8
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Quote:
Originally Posted by adlai View Post
Speaking of the IGH, it does take some getting used to, esp not pedaling into shifts. But, it moves gears pretty quickly and painlessly, and it has a good range of speeds. It gave me the most problems around 5, but when an IGH slips, you're simply put into 1st gear until the clutch or whatever activates. All in all, I'd say that while it doesn't shift as well as a clean cassette system, it shifts better than a dirty cassette system.

It does have a "grinding" effect on some gears, which is sorta like a bad bottom bracket, but really it's not something I'd notice on a daily basis unless I were depressed or something.
Sounds like your hub is misadjusted or broken (or will be broken soon if you keep riding it while it's misadjusted). You should be much happier if you adjust it properly.
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Old 09-04-10, 01:34 PM   #9
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Hey Sesame, I didn't even know those kinds of bar ends existed <slap on the forehead>. Thanks.
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Old 09-04-10, 06:21 PM   #10
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Okay. How to adjust it?
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Old 09-04-10, 08:12 PM   #11
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http://www.cykelkongen.dk/sturmey_archer_8speed.pdf
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Old 09-04-10, 09:43 PM   #12
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Congrats!

I recently got an 8H and am really happy with it. Lets see, yes, the rear fender has a limited function. I swapped it out and installed some planet bike folders. I don't think you can install the 26" tires on this bike. The diameter of those is too big. Something that will speed you up would be some high pressure 20" tires. Those stock kenda kwests are not that great.

I've covered the recent upgrades to my 8H in my blog here:

http://utilitycyclist.blogspot.com/2...wntube-8h.html

My initial first blush review of the 8H is here:

http://utilitycyclist.blogspot.com/2...-commuter.html

Also, I've recently swapped out the front fork for an older more cushy fork. I need to do a post on that.
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Old 09-04-10, 11:39 PM   #13
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Here is a video of how it's adjusted:
http://www.youtube.com/watch?v=tNgb1afwhAA
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Old 09-05-10, 05:41 AM   #14
adlai
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it's an xrf8 hub.

I can't see any arrows indicating adjustment.
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Old 09-05-10, 08:04 AM   #15
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it's an xrf8 hub.

I can't see any arrows indicating adjustment.
If you can't figure it out with the repair manual and video links, then you should take it to a bike shop. It takes 2 minutes. Watch them do it so you can do this adjustment routinely. It's an important preventive maintenance item.
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Old 09-05-10, 08:55 AM   #16
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I figured it out. The arrow is towards the back of the hub on the gear side, towards the bottom.

Adjusted it. Shifts much better, no skipping whatsoever, though having to worry about not putting a load on the pedals while shifting does take getting used to.

I still feel some "grinding" though, and here's something weird. When I'm walking the bike, sometimes the pedals will move with the bike, and sometimes they won't.
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Old 09-05-10, 10:12 AM   #17
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Is the noise similar to the video? You need the volume turned up http://www.youtube.com/watch?v=cWxN-aZcoPs

The bike is also a Downtube 8H.
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Old 09-05-10, 11:26 AM   #18
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Originally Posted by adlai View Post
I figured it out. The arrow is towards the back of the hub on the gear side, towards the bottom.

Adjusted it. Shifts much better, no skipping whatsoever, though having to worry about not putting a load on the pedals while shifting does take getting used to.

I still feel some "grinding" though, and here's something weird. When I'm walking the bike, sometimes the pedals will move with the bike, and sometimes they won't.
The axle nuts may be a little tight. Loosen them 1/8 of a turn. If that doesn't work, you'll need to loosen the cone bearings. 1/8 of a turn at a time.
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