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Search: Posts Made By: Duragrouch
Showing results 1 to 50 of 1000
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Forum: Folding Bikes
04-18-24, 01:55 AM
Replies: 14
Views: 495
Posted By Duragrouch

MMMMMmmmmm.... look at that elegant 2X gearing....

MMMMMmmmmm.... look at that elegant 2X gearing. :)

OP: if needing to fold and unfold more often than just for flights, bikes that come apart like the above take too much time to break down. But if...
Forum: Folding Bikes
04-18-24, 01:38 AM
Replies: 5
Views: 244
Posted By Duragrouch

Not same bike, but similar. Yours has a different...

Not same bike, but similar. Yours has a different frame, the main tube is smaller diameter, possible perfectly round, whereas the Dahon Speed of the OP has a deeper section larger ovalized main tube.
Forum: Folding Bikes
04-18-24, 01:33 AM
Replies: 5
Views: 244
Posted By Duragrouch

Generally a good bike, sky is the limit for mods....

Generally a good bike, sky is the limit for mods. A couple things:

Bushing ("shim") between seatpost and seat tube: If aluminum (silver), great. If plastic (black), replace immediately, otherwise...
Forum: Classic & Vintage
04-18-24, 12:30 AM
Replies: 83
Views: 2,273
Posted By Duragrouch

Yes, but it has the rear sprocket outboard of the...

Yes, but it has the rear sprocket outboard of the seatstay, gotta admit, a cool feature. Makes going to belts so much easier.
Forum: Pills and Ills
04-18-24, 12:11 AM
Replies: 19
Views: 496
Posted By Duragrouch

Good article. Besides the lure of sweets, baked...

Good article. Besides the lure of sweets, baked goods, pasta, etc, there is also the issue of fresh vegetables being expensive, which we should all eat instead of just more protein (and by fresh, I...
Forum: General Cycling Discussion
04-17-24, 11:53 PM
Replies: 68
Views: 2,956
Posted By Duragrouch

Hmm... I wonder if I could take my tubies and...

Hmm... I wonder if I could take my tubies and seal them tubeless style, so if the tube did get a pinch flat, the air would just leak into the same void? Of course, like run-flat tires, you need an...
Forum: General Cycling Discussion
04-17-24, 11:45 PM
Replies: 15
Views: 468
Posted By Duragrouch

https://cimg8.ibsrv.net/gimg/bikeforums.net-vbulle...

https://cimg8.ibsrv.net/gimg/bikeforums.net-vbulletin/2000x1504/20220423_135901_0461388df72b93fabdc6c0f27ba25d7648f30b53.jpg

I could have stood it up if luggage space was tight. A bag is a good...
Forum: Touring
04-17-24, 10:36 PM
Replies: 14
Views: 502
Posted By Duragrouch

The extender in the link above is well...

The extender in the link above is well engineered, much stronger in vertical strength, however still may be torsionally too flexible. But to hold just aero bar grips, I think is adequate.



I...
Forum: Touring
04-17-24, 10:28 PM
Replies: 10
Views: 369
Posted By Duragrouch

(above) Definitely expedition strength. However,...

(above) Definitely expedition strength. However, for max rated weight, I think those two attachments per side on cantilevered brackets is a bit weak, I would want additional anchors at the fork crown...
Forum: Bicycle Mechanics
04-17-24, 10:19 PM
Replies: 15
Views: 515
Posted By Duragrouch

Darned good question. If the cracks on this side...

Darned good question. If the cracks on this side were on the rim flange, it might be different on the other side. But since the crack is originating from the inner V of the rim where both sides...
Forum: Bicycle Mechanics
04-17-24, 01:44 AM
Replies: 15
Views: 515
Posted By Duragrouch

I guess I'll binge-watch Bad Breaking.

I guess I'll binge-watch Bad Breaking.
Forum: Bicycle Mechanics
04-17-24, 01:28 AM
Replies: 15
Views: 515
Posted By Duragrouch

Straight and radial makes sense to me if failure...

Straight and radial makes sense to me if failure due to excessive tension on the inside diameter of the rim due to high bending loads. Regarding 180 degrees apart, just a guess, but larger crack...
Forum: Pills and Ills
04-17-24, 01:01 AM
Replies: 19
Views: 496
Posted By Duragrouch

Generally I agree. However, (and believe me I...

Generally I agree. However, (and believe me I HATE quoting Reagan) "Trust, but verify." I had one doctor prescribe a drug, took one pill, and 4 hours later I was 10X worse, I would have been suicidal...
Forum: Electric Bikes
04-16-24, 04:01 AM
Replies: 3
Views: 272
Posted By Duragrouch

The killer app for this is painted olive drab...

The killer app for this is painted olive drab green or flat dark earth or all flat black and used for stealthily inserting troops from far enough away that the helo or V-22 isn't heard. Much further...
Forum: Touring
04-16-24, 12:52 AM
Replies: 14
Views: 502
Posted By Duragrouch

(above) If you are using long double clamps to...

(above) If you are using long double clamps to hold bar-ends like a clip-on aero bar, if you are only pulling straight back on the handles, it might work, much less loading than handlebar climbing...
Forum: Bicycle Mechanics
04-16-24, 12:36 AM
Replies: 15
Views: 420
Posted By Duragrouch

Interesting. Pressure bonded like tri-ply...

Interesting. Pressure bonded like tri-ply cookware? Or actually melty interface?

At least several decades ago, there became available heavy truck bumpers that were stainless-steel-clad aluminum,...
Forum: Bicycle Mechanics
04-16-24, 12:11 AM
Replies: 28
Views: 619
Posted By Duragrouch

Recycled Cycles in the south end of the U...

Recycled Cycles in the south end of the U district has great prices on used parts, big selection. I found some fairly obscure brake levers there (L-handles, so can grab on bar-ends too), like new,...
Forum: Bicycle Mechanics
04-15-24, 11:54 PM
Replies: 30
Views: 660
Posted By Duragrouch

OP: Saw your pic, hilarious, dirt cheap bike that...

OP: Saw your pic, hilarious, dirt cheap bike that looks like a track racer frame.

I haven't yet read all the replies.

You can true wheels without a truing stand, I've done it all my life. I...
Forum: Bicycle Mechanics
04-15-24, 11:14 PM
Replies: 15
Views: 420
Posted By Duragrouch

Sounds like the fixing bolt that holds the...

Sounds like the fixing bolt that holds the freehub to the hub may have loosened, causing bending loads. But could have just failed due to bending loads without loosening. If you can remove the part...
Forum: Bicycle Mechanics
04-15-24, 11:05 PM
Replies: 10
Views: 249
Posted By Duragrouch

I don't know about the fork, but the original...

I don't know about the fork, but the original owner should be easy to spot in a crowd, he's gonna be really tall, I'm guessing 6'4".
Forum: Bicycle Mechanics
04-15-24, 11:02 PM
Replies: 8
Views: 248
Posted By Duragrouch

+1. Beat me to it. Don't know if that's it, but a...

+1. Beat me to it. Don't know if that's it, but a good guess.
Forum: Bicycle Mechanics
04-15-24, 10:55 PM
Replies: 23
Views: 541
Posted By Duragrouch

Please see my more recent edit above re: 12s...

Please see my more recent edit above re: 12s plates.

From breaking off from spool? As my dad would say, "hell I dunno".

Yes, good to replace chain. Just be aware 12s may be less durable in this...
Forum: Bicycle Mechanics
04-15-24, 10:49 PM
Replies: 15
Views: 515
Posted By Duragrouch

Agree with all above. Interesting failure mode;...

Agree with all above. Interesting failure mode; Usually rims fail by cracks at spoke hole. The cracks shown are in areas loaded in tension as the wheel rolls. The deep rim section makes it a lot...
Forum: Bicycle Mechanics
04-15-24, 10:37 PM
Replies: 23
Views: 541
Posted By Duragrouch

Got it. See my multiple revisions above.

Got it. See my multiple revisions above.
Forum: Bicycle Mechanics
04-15-24, 10:28 PM
Replies: 23
Views: 541
Posted By Duragrouch

I'm not sure I understand the break. I'm seeing...

I'm not sure I understand the break. I'm seeing one half of the master link still on the chain, intact, and the other half loose above it, intact. I see part of a broken link on the chain; Where is...
Forum: Folding Bikes
04-15-24, 09:40 PM
Replies: 6
Views: 510
Posted By Duragrouch

Not addressing your specific question, but just...

Not addressing your specific question, but just FYI, there are several threads (in Folding Bikes subgroup) with tons of posts regarding the Liberte, pretty much all positive in terms of quality for...
Forum: General Cycling Discussion
04-15-24, 09:35 PM
Replies: 50
Views: 1,864
Posted By Duragrouch

Polyvelo. You heard it here first. Needs its own...

Polyvelo. You heard it here first. Needs its own checkbox on the next census.
Forum: Pills and Ills
04-15-24, 09:16 PM
Replies: 19
Views: 496
Posted By Duragrouch

Metformin has a very long history, which is good...

Metformin has a very long history, which is good from a safety standpoint and also available very cheap as generic. So I think entirely appropriate as a first countermeasure, if not contraindicated...
Forum: General Cycling Discussion
04-15-24, 06:38 PM
Replies: 68
Views: 2,956
Posted By Duragrouch

I am by no means an authority, never used...

I am by no means an authority, never used tubeless. For me, tubed, I am running higher pressure than recommended for my tire width, because a) a got a pinch flat including slightly bending rim side...
Forum: General Cycling Discussion
04-15-24, 04:50 PM
Replies: 68
Views: 2,956
Posted By Duragrouch

(above) Makes sense. What I don't understand is,...

(above) Makes sense. What I don't understand is, if sealant stays liquid in presence of oxygen inside tire or tube, how does it harden when going out leak hole? Unless it hardens in the presence of...
Forum: Pills and Ills
04-15-24, 03:32 PM
Replies: 19
Views: 496
Posted By Duragrouch

I started metformin I think 3-4 years ago. First...

I started metformin I think 3-4 years ago. First needed to use at half dose for a long time, full dose and I could not be far from the bathroom. In recent years I have adapted well to full dose which...
Forum: Touring
04-15-24, 04:57 AM
Replies: 14
Views: 502
Posted By Duragrouch

I agree. I used to do the same when I had access...

I agree. I used to do the same when I had access to a full metal shop at my former employers. Plus I was qualified on everything, having worked doing that before and during college.
Forum: General Cycling Discussion
04-14-24, 09:30 PM
Replies: 68
Views: 2,956
Posted By Duragrouch

I have no experience with tubeless. So it sounds...

I have no experience with tubeless. So it sounds like all tubeless use a semi-liquid sealant to seal any punctures, rather than the tire being impervious to puncture. So two questions:
- Is this any...
Forum: Bicycle Mechanics
04-14-24, 08:41 PM
Replies: 21
Views: 665
Posted By Duragrouch

(above) +1. Perfectly concise. EDIT: Make...

(above) +1. Perfectly concise.

EDIT: Make sure you push on the derailleur as described, with shifter positioned for the low ring. If shifter on high, it will be pulling the derailleur outward and...
Forum: General Cycling Discussion
04-14-24, 08:37 PM
Replies: 15
Views: 468
Posted By Duragrouch

Oh and regarding service you mentioned... I'm...

Oh and regarding service you mentioned... I'm always helping friends with simple bike maintenance like adjusting brake pads and cables or replacing, replacing a chain, etc. If you have local good...
Forum: General Cycling Discussion
04-14-24, 06:46 PM
Replies: 15
Views: 468
Posted By Duragrouch

I agree with all of the above. If the tour is...

I agree with all of the above. If the tour is "laid back" as you say, probably not steep climbs, but if you encounter any, I've found I can walk the bike up about as fast as grinding in a low gear,...
Forum: Bicycle Mechanics
04-14-24, 02:50 AM
Replies: 21
Views: 665
Posted By Duragrouch

Another possibility: The front derailleur spring...

Another possibility: The front derailleur spring is broken in some way, such as the end of the coil normally has a bend in it to catch somewhere in the linkage; If that end has broken off, or slipped...
Forum: Bicycle Mechanics
04-14-24, 02:40 AM
Replies: 12
Views: 357
Posted By Duragrouch

I would add to the excellent advice above, don't...

I would add to the excellent advice above, don't heat an aluminum hub, aluminum can lose strength at a much lower temp than steel, plus you may damage the outside finish, plus it also makes it much...
Forum: Touring
04-14-24, 02:24 AM
Replies: 14
Views: 502
Posted By Duragrouch

A lot of bar-extenders, also known as a...

A lot of bar-extenders, also known as a double-clamp, are not stiff enough to resist the torque of handlebar forces when climbing, and most especially the very long version in one of your links. Most...
Forum: General Cycling Discussion
04-14-24, 02:14 AM
Replies: 15
Views: 468
Posted By Duragrouch

As stated, gearing is usually very limited on...

As stated, gearing is usually very limited on folding bikes, there are rare exceptions, the Citizen Miami is not one of them. I have a formerly 7 speed folder that I have fit for 50/34 double...
Forum: Hybrid Bicycles
04-14-24, 01:43 AM
Replies: 18
Views: 749
Posted By Duragrouch

I used to be a bullhorn bar guy, but those were...

I used to be a bullhorn bar guy, but those were 40 cm center to center, flat bar with bar-ends is 54 cm, much more comfortable. I first went with the Origin-8 rubber-covered shorty ends, but went to...
Forum: Bicycle Mechanics
04-14-24, 12:34 AM
Replies: 99
Views: 18,112
Posted By Duragrouch

TJ Maxx is a USA chain of clothing stores that...

TJ Maxx is a USA chain of clothing stores that specializes in selling past season/year fashions. I haven't been in one in decades, but in the '90s found a lot of good Ralph Lauren stuff (which were...
Forum: Bicycle Mechanics
04-13-24, 09:47 PM
Replies: 99
Views: 18,112
Posted By Duragrouch

Somebody ought to talk to TJ Maxx about selling...

Somebody ought to talk to TJ Maxx about selling past-generation bike parts at a steep discount.
Forum: General Cycling Discussion
04-13-24, 09:41 PM
Replies: 68
Views: 2,956
Posted By Duragrouch

And quotable, equally important. High up on the...

And quotable, equally important. High up on the list of assets.
Forum: General Cycling Discussion
04-13-24, 09:37 PM
Replies: 56
Views: 1,902
Posted By Duragrouch

Wow, some of that is a surprise, some not....

Wow, some of that is a surprise, some not. E-bikes on bike paths can be a menace even in bike friendly places, but increasingly the ones that are powerful and wired for higher-class speed go on the...
Forum: General Cycling Discussion
04-13-24, 07:55 PM
Replies: 50
Views: 1,864
Posted By Duragrouch

There's another thread going on speed wobble,...

There's another thread going on speed wobble, I'll try to post in a sec, and someone mentioned a podcast on the subject, and darned if they didn't mention a Ti bike on a very fast downhill, got into...
Forum: General Cycling Discussion
04-13-24, 07:35 PM
Replies: 68
Views: 2,956
Posted By Duragrouch

Bridgekeeper ...

Bridgekeeper (https://m.imdb.com/name/nm0000416/?ref_=m_tt_ch) : Stop. Who would cross the Bridge of Death must answer me these questions three, ere the other side he see.

Sir Lancelot ...
Forum: General Cycling Discussion
04-13-24, 05:40 PM
Replies: 56
Views: 1,902
Posted By Duragrouch

I can't say for certain now, been gone a long...

I can't say for certain now, been gone a long time, but in the '90s, in summer, yeah the metropark loop roads could be busy on weekends. But on weekdays, in evenings when I would bike there, around,...
Forum: General Cycling Discussion
04-13-24, 04:41 PM
Replies: 56
Views: 2,184
Posted By Duragrouch

(above) Vaild on both points. Please see my edit...

(above) Vaild on both points. Please see my edit at the bottom of my post #51; I wish I could post that PDF here. I may try to look for where I originally found that and post a link. Good study.
Forum: General Cycling Discussion
04-13-24, 04:04 AM
Replies: 56
Views: 2,184
Posted By Duragrouch

Not surprised about the jeep reference. Since the...

Not surprised about the jeep reference. Since the takover of Chrysler corporation by Fiat, a model was added to the Jeep line that is derived from a small front-wheel drive Fiat chassis, and purists...
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