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Search: Posts Made By: Duragrouch
Showing results 1 to 50 of 1000
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Forum: Folding Bikes
05-15-24, 05:42 AM
Replies: 8
Views: 253
Posted By Duragrouch

That's what I'm saying. I'm not a flag-waver for...

That's what I'm saying. I'm not a flag-waver for the big brands, but diverging seatpost and handlepost, for a bike that adjusts to a wide height range, was pretty smart. Wish I'd've thought of it.
...
Forum: Folding Bikes
05-15-24, 01:46 AM
Replies: 7
Views: 273
Posted By Duragrouch

Aluminum can be a great frame material. I have a...

Aluminum can be a great frame material. I have a late 1980s Cannondale from 6061-T6. Newer aluminum bikes use 7005 aluminum as it does not require post-weld heat-treating like 6061-T6.

In general,...
Forum: Folding Bikes
05-15-24, 01:18 AM
Replies: 6
Views: 215
Posted By Duragrouch

First, do you mean a Dahon Curve, or Dahon Curl?...

First, do you mean a Dahon Curve, or Dahon Curl? They use much different frames, but similar size wheels. The Curl folds very similar to a Brompton, with a swinging rear triangle and front frame...
Forum: Folding Bikes
05-15-24, 12:42 AM
Replies: 8
Views: 253
Posted By Duragrouch

Uh... the OP was asking opinions on the Mezzo...

Uh... the OP was asking opinions on the Mezzo *before buying*. One would think they want to hear all, good and bad. Otherwise they wouldn't ask.

If you think my observations about the design are...
Forum: Classic & Vintage
05-15-24, 12:35 AM
Replies: 12
Views: 569
Posted By Duragrouch

"Burn on, big river, burn on Burn on, big...

"Burn on, big river, burn on
Burn on, big river, burn on
Now the Lord can make you tumble
And the Lord can make you turn
And the Lord can make you overflow
But the Lord can't make you burn"

-...
Forum: Bicycle Mechanics
05-15-24, 12:30 AM
Replies: 35
Views: 705
Posted By Duragrouch

I just don't have any rubber patch kits. I still...

I just don't have any rubber patch kits. I still have the boxes, holds presta-schrader adaptor (I haven't needed in a couple decades but I help others who do) plus a ball-needle inflator. I'll look...
Forum: Bicycle Mechanics
05-15-24, 12:24 AM
Replies: 46
Views: 1,515
Posted By Duragrouch

After cleaning my chain with an on-bike cleaner...

After cleaning my chain with an on-bike cleaner and then wiping dry, I apply chain lube (75W-90 gear oil) via a covid-test dropper bottle, one drop at each roller. That doesn't leave much excess...
Forum: Bicycle Mechanics
05-15-24, 12:20 AM
Replies: 42
Views: 785
Posted By Duragrouch

I stopped using Tri-Flow "with PTFE" after...

I stopped using Tri-Flow "with PTFE" after working in engineering. I know what PTFE looks like, and there doesn't seem to be any, or at least much, in the Tri-Flow clear carrier oil that then...
Forum: Bicycle Mechanics
05-15-24, 12:12 AM
Replies: 42
Views: 785
Posted By Duragrouch

I don't know about canola oil, but I lubed hair...

I don't know about canola oil, but I lubed hair clippers in a pinch with olive oil, big mistake, after a while it dried to a gum and locked up the clippers. Take apart the two blades and clean, a few...
Forum: General Cycling Discussion
05-15-24, 12:05 AM
Replies: 30
Views: 838
Posted By Duragrouch

I have a LWB USS 'bent (Long Wheelbase, Under...

I have a LWB USS 'bent (Long Wheelbase, Under Seat Steering, recumbent), which is close.

Oh, and it also has rear high monostays, so doesn't need an outboard cog, it could mount a belt drive with...
Forum: General Cycling Discussion
05-14-24, 11:58 PM
Replies: 30
Views: 838
Posted By Duragrouch

You just described a Rokon 2WD motorcycle.

You just described a Rokon 2WD motorcycle.
Forum: Bicycle Mechanics
05-14-24, 03:43 AM
Replies: 14
Views: 351
Posted By Duragrouch

Something getting shorter... something getting...

Something getting shorter... something getting longer... something getting unclipped...

Not having a clue how that hub is constructed, I'm gonna take a first stab at it and say that the (pic) left...
Forum: Bicycle Mechanics
05-14-24, 03:38 AM
Replies: 42
Views: 785
Posted By Duragrouch

(above) Road biking only, environmental dust...

(above) Road biking only, environmental dust contamination of oils has never been the issue; It gets pasty after a month of long daily rides, due to fine chain metal powder forming a colloid...
Forum: Classic & Vintage
05-14-24, 03:11 AM
Replies: 20
Views: 536
Posted By Duragrouch

I don't know Colnagos. Is the frame construction...

I don't know Colnagos. Is the frame construction typical of Colnago? Did they weld frames and are those welds typical of Colnago, or were Colnagos all lugged and brazed frames? Do the rear dropouts...
Forum: Folding Bikes
05-14-24, 02:55 AM
Replies: 8
Views: 253
Posted By Duragrouch

https://cimg6.ibsrv.net/gimg/bikeforums.net-vbulle...

https://cimg6.ibsrv.net/gimg/bikeforums.net-vbulletin/1355x1053/mezzo_d9_folding_bike_as_good_as_posible_739582475_6e32e9aaa737f5497a858e22c4ef763196d7930a.jpg

Just me, but I think the handlepost...
Forum: Classic & Vintage
05-14-24, 02:19 AM
Replies: 12
Views: 569
Posted By Duragrouch

The swingtop bottle shown ("GEYER FRERES 1895")...

The swingtop bottle shown ("GEYER FRERES 1895") from Alsace I think, is not antique, but probably current production; Cap is plastic, there's probably a rectangular "scoop" in the side near the...
Forum: General Cycling Discussion
05-14-24, 02:10 AM
Replies: 30
Views: 838
Posted By Duragrouch

Because then, instead of the hub rotating around...

Because then, instead of the hub rotating around a fixed axle, the axle has to rotate, which makes for a trickier dropout to support a bearing for that, which describes a typical "semi-floating" car...
Forum: Bicycle Mechanics
05-14-24, 01:57 AM
Replies: 42
Views: 785
Posted By Duragrouch

Not that I'm endorsing ATF as bike lube, but it's...

Not that I'm endorsing ATF as bike lube, but it's both hydraulic fluid and lube. I had a GM car with a manual transmission and it used Dexron ATF as lube, possibly for line standardization, as...
Forum: Bicycle Mechanics
05-14-24, 01:36 AM
Replies: 14
Views: 351
Posted By Duragrouch

At midpoint there appears to be a dog-clutch,...

At midpoint there appears to be a dog-clutch, thin metal cylindrical part with axial tabs, that appears to perhaps be missing a section between tabs. Hard to see with all the grease.

Just to the...
Forum: Bicycle Mechanics
05-14-24, 01:02 AM
Replies: 34
Views: 927
Posted By Duragrouch

You are correct to anticipate needing lower...

You are correct to anticipate needing lower gearing. For long spins, not super steep, race bike and not loaded tourer, I think you would be able to do it with around 20 gear-inch low. Let's see how...
Forum: Touring
05-13-24, 11:21 PM
Replies: 44
Views: 1,550
Posted By Duragrouch

(above) It was intended as a mild joke, only...

(above) It was intended as a mild joke, only because you said "huge variation", yes there is. No malice intended. Sincerest apologies.

I like your posts. High value.
Forum: Bicycle Mechanics
05-13-24, 10:51 PM
Replies: 28
Views: 691
Posted By Duragrouch

I don't doubt any of the above, like I said, I'm...

I don't doubt any of the above, like I said, I'm not a pro. Bike fit I'm surprised, that I think it would be included with any bike purchase (and for correct frame sizing of bike to be purchased),...
Forum: Bicycle Mechanics
05-13-24, 10:16 PM
Replies: 115
Views: 20,185
Posted By Duragrouch

All of the above matches what I saw on ZFC, the...

All of the above matches what I saw on ZFC, the thinner, higher speed chains last longer. Counterintuitive (and I think may be counter to old advice on Sheldon Brown), until the reasons are known. I...
Forum: Bicycle Mechanics
05-13-24, 10:10 PM
Replies: 15
Views: 276
Posted By Duragrouch

I agree that initial wear-in on anything...

I agree that initial wear-in on anything mechanical, IGH, transmission, engine, etc, produces the most metal particles, warranting an earlier lube change. But a magnetic drain plug really helps in...
Forum: Bicycle Mechanics
05-13-24, 09:38 PM
Replies: 35
Views: 705
Posted By Duragrouch

"Doctor, heal thy self." I've said in the past of...

"Doctor, heal thy self." I've said in the past of my liking the Park sticky patches, good luck with them, others have said they are more temporary patches. Went to ride today, not quite flat but...
Forum: Bicycle Mechanics
05-13-24, 05:26 PM
Replies: 35
Views: 705
Posted By Duragrouch

OK now I'm picturing a bearded cat. That's not...

OK now I'm picturing a bearded cat. That's not good, that's not good.
Forum: Touring
05-13-24, 04:53 AM
Replies: 44
Views: 1,550
Posted By Duragrouch

https://cimg4.ibsrv.net/gimg/bikeforums.net-vbulle...

https://cimg4.ibsrv.net/gimg/bikeforums.net-vbulletin/2000x1504/20220423_075711_ee419c61731c29bb149dcff049a06b5bcbbcc4c3.jpg

I once hauled home from UPS, an identical folding frame that had been...
Forum: Electric Bikes
05-13-24, 04:20 AM
Replies: 18
Views: 927
Posted By Duragrouch

I don't have time to wade through the long...

I don't have time to wade through the long videos. My guess is that at the price point, it's gonna have the Pinion C1.6 gearbox, which is only 295% range, which is not enough for a bike with that...
Forum: Bicycle Mechanics
05-13-24, 03:39 AM
Replies: 13
Views: 311
Posted By Duragrouch

Yes, that's why I said "about" 180 degrees, I...

Yes, that's why I said "about" 180 degrees, I didn't think the difference of a few degrees was important. The reason I did mention the difference between that and RD ratings based on "whole" rings,...
Forum: Touring
05-12-24, 11:04 PM
Replies: 40
Views: 854
Posted By Duragrouch

There's an ebike out now with rear hub motor and...

There's an ebike out now with rear hub motor and Pinion for manual pedaling, $2k, that's less than half the price than when I checked on Pinion a year or more ago.

I assume that all the Pinion...
Forum: Touring
05-12-24, 10:58 PM
Replies: 40
Views: 854
Posted By Duragrouch

An old chain would most probably skip on the...

An old chain would most probably skip on the gears you *least* frequently use, but perhaps not; My experience is that the chain beds into the cogs, matching each other. The middle gears get the most...
Forum: Bicycle Mechanics
05-12-24, 10:31 PM
Replies: 13
Views: 356
Posted By Duragrouch

"Bondo in your doors is a sign of courage." - (I...

"Bondo in your doors is a sign of courage." - (I think Rufus Parnelli Jones)

If you want it smooth, prep the area, bondo, level off, prime and paint.

If just leaving the dent, I treat small...
Forum: Bicycle Mechanics
05-12-24, 10:19 PM
Replies: 35
Views: 705
Posted By Duragrouch

Beat me to it. Lips even more sensitive. One...

Beat me to it. Lips even more sensitive. One time, I had to stretch the tube section that was in front of my lips, do the next section, and eventually found the leak. And note, first the outside...
Forum: Bicycle Mechanics
05-12-24, 10:11 PM
Replies: 115
Views: 20,185
Posted By Duragrouch

Mine is a genuine KMC, however I had expected...

Mine is a genuine KMC, however I had expected this 8-speed chain to last longer than thinner higher speed chains. Wrong. Ratings on Zero Friction Cycling showed poor wear, and this is because the...
Forum: Bicycle Mechanics
05-12-24, 10:02 PM
Replies: 28
Views: 728
Posted By Duragrouch

Various notes: I have a hybrid bike with the...

Various notes:

I have a hybrid bike with the tilting stem, it's nice, if heavy.

My 20" wheel folding bike has the flat handlebar centered on the stem, no reach, and the clamp is welded so no...
Forum: Bicycle Mechanics
05-12-24, 09:34 PM
Replies: 13
Views: 311
Posted By Duragrouch

Yes, thinking of only about 180 degrees of chain...

Yes, thinking of only about 180 degrees of chain wrap around the chainring is completely accurate. Just realize that, in terms of the rear derailleur "maximum capacity", to make matters easier for...
Forum: Bicycle Mechanics
05-12-24, 08:30 PM
Replies: 28
Views: 691
Posted By Duragrouch

+1. Somewhere in my dad's stuff is a 1" diameter...

+1. Somewhere in my dad's stuff is a 1" diameter grade 8 bolt that is necked from being overtorqued by a tank mechanic with an 8' cheater bar. Dad said many parts on a tank are designed as heavy as...
Forum: Bicycle Mechanics
05-12-24, 08:25 PM
Replies: 28
Views: 691
Posted By Duragrouch

I'm all self-taught, and I would recommend that...

I'm all self-taught, and I would recommend that for working on your own bikes, the plethora of helpful videos online helps, I would look on Park Tool first, and Youtube second.

If I were seeking a...
Forum: Bicycle Mechanics
05-12-24, 08:02 PM
Replies: 15
Views: 276
Posted By Duragrouch

Gosh with those intervals, I'd need service...

Gosh with those intervals, I'd need service several times a year. Hopefully as easy as stated above, or, a hub with good seals that uses a gear lube oil bath, and a drain plug for easy drain and...
Forum: Bicycle Mechanics
05-12-24, 07:55 PM
Replies: 39
Views: 33,045
Posted By Duragrouch

I think that's a good price, but some IGHs have...

I think that's a good price, but some IGHs have some "working" part of the gears or bearing races, integral with the hub shell, so might not be able to just do a core swap. IIRC, one of the...
Forum: Commuting
05-12-24, 07:27 PM
Replies: 20
Views: 813
Posted By Duragrouch

(above) Sorry to hear all of the above. I hope...

(above) Sorry to hear all of the above. I hope you get an easy refund, and if not, at least write to your local congressperson and copy Amtrak on that. Next I would look online for any class actions...
Forum: General Cycling Discussion
05-12-24, 07:10 PM
Replies: 34
Views: 1,771
Posted By Duragrouch

My usual disclaimer applies, "I could be wrong"....

My usual disclaimer applies, "I could be wrong". And always good to try different things. However, in my mind, I'm not seeing air pressure as the stressor; That is a double-wall rim, so the inner...
Forum: Touring
05-11-24, 07:13 PM
Replies: 144
Views: 9,997
Posted By Duragrouch

Sure looks that way to me! But then I'm not a...

Sure looks that way to me! But then I'm not a gravel cognoscenti.
Forum: Bicycle Mechanics
05-11-24, 06:39 PM
Replies: 27
Views: 597
Posted By Duragrouch

I have not, so you may have a point. My...

I have not, so you may have a point. My experience has been totally automotive, and 30 years ago at that, and for that, I was just so impressed by them only carrying quality brands and all at low...
Forum: Folding Bikes
05-11-24, 04:41 PM
Replies: 19
Views: 582
Posted By Duragrouch

I should rephrase; I didn't mean a Birdy...

I should rephrase; I didn't mean a Birdy wheelbase is short by bike standards, I should have clarified; It, and all bicycles except perhaps a long wheelbase recumbent, have a short wheelbase with...
Forum: Folding Bikes
05-11-24, 01:51 AM
Replies: 19
Views: 582
Posted By Duragrouch

I was doing a lot of both today. First warm day...

I was doing a lot of both today. First warm day of the season, slowed me down, and I'm way out of shape.

I did notice on my climbs, a slight lateral rock in the steering. Stopped, checked out, not...
Forum: Folding Bikes
05-11-24, 01:41 AM
Replies: 16
Views: 559
Posted By Duragrouch

Didn't think so. If night reflectivity is an...

Didn't think so. If night reflectivity is an issue, check on both colors. If not, just pick the one you like best.
Forum: Touring
05-11-24, 01:24 AM
Replies: 144
Views: 9,997
Posted By Duragrouch

Thanks. What a cluster. Used to be,...

Thanks. What a cluster.

Used to be, commercial heavy tractor-trailor combinations were limited by a maximum overall length, thus to fit more cargo, tractors were cabover-engine (COE) designs,...
Forum: Folding Bikes
05-11-24, 12:24 AM
Replies: 19
Views: 582
Posted By Duragrouch

I've not totally grokked the Birdy front...

I've not totally grokked the Birdy front suspension geometry, but I think it may incorporate some anti-dive under front braking. Under other conditions, with no torque acting in front, the suspension...
Forum: Bicycle Mechanics
05-11-24, 12:02 AM
Replies: 27
Views: 661
Posted By Duragrouch

While the wheel is hard to see with the...

While the wheel is hard to see with the background, it appears to be *at least* 3X, and based on the tangency of the spokes, I think 4X. (If that was the pic of the "old" wheel, or the matching other...
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