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Search: Posts Made By: Duragrouch
Showing results 1 to 50 of 1000
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Forum: Touring
05-13-24, 04:53 AM
Replies: 42
Views: 1,323
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: 847
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: 249
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: 18
Views: 275
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: 18
Views: 275
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: 10
Views: 233
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: 20
Views: 334
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: 110
Views: 19,811
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: 21
Views: 399
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: 249
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: 25
Views: 419
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: 25
Views: 419
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: 6
Views: 112
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: 32,955
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: 17
Views: 668
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: 30
Views: 1,460
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: 143
Views: 9,661
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: 450
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: 18
Views: 454
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: 18
Views: 454
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: 13
Views: 439
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: 143
Views: 9,661
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: 18
Views: 454
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: 562
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...
Forum: Folding Bikes
05-10-24, 11:56 PM
Replies: 13
Views: 439
Posted By Duragrouch

The Launch orginally came in orange with black...

The Launch orginally came in orange with black seatstays and chainstays. That was superceded by a white which I think(?) may be night-reflective, not certain. So before making a decision, find out if...
Forum: Bicycle Mechanics
05-10-24, 02:42 AM
Replies: 39
Views: 32,955
Posted By Duragrouch

Aaron's recommendations are based heavily on the...

Aaron's recommendations are based heavily on the assumption of year-round operation in rainy Seattle. If you only bike in the dry, a lot less critical IMO. However factory lube is still minimal, I...
Forum: Bicycle Mechanics
05-10-24, 02:21 AM
Replies: 3
Views: 120
Posted By Duragrouch

Or the brake caliper arms, dit-dit. I diagnosed...

Or the brake caliper arms, dit-dit. I diagnosed that on a road bike that had stopped due to the noise.
Forum: Bicycle Mechanics
05-10-24, 02:15 AM
Replies: 27
Views: 562
Posted By Duragrouch

Uh yes, my bad, disc front wheels also need...

Uh yes, my bad, disc front wheels also need dishing, I think.
Forum: Bicycle Mechanics
05-10-24, 02:09 AM
Replies: 27
Views: 562
Posted By Duragrouch

Ok so that answers the question if this is a...

Ok so that answers the question if this is a front or rear wheel. Rear. There are other considerations for rear such as where spokes are leading or trailing.
Forum: Bicycle Mechanics
05-10-24, 02:04 AM
Replies: 27
Views: 562
Posted By Duragrouch

Your pics won't show up until you have ten posts....

Your pics won't show up until you have ten posts. You'll need help from a moderator to post them for you.
Forum: Bicycle Mechanics
05-10-24, 02:01 AM
Replies: 27
Views: 562
Posted By Duragrouch

(above) Yeah that sounds way off, from 3cm too...

(above) Yeah that sounds way off, from 3cm too long, to gap between spokes where I think there should be interference. Another thing that could be off is phasing of spokes from left and right sides....
Forum: Bicycle Mechanics
05-10-24, 01:54 AM
Replies: 27
Views: 450
Posted By Duragrouch

A local industrial supply that carries bearings....

A local industrial supply that carries bearings. In Detroit it was Detroit Ball Bearing. I could go there and get genuine made in USA Timken roller bearings or German brand ball bearings for half the...
Forum: Bicycle Mechanics
05-10-24, 01:46 AM
Replies: 27
Views: 562
Posted By Duragrouch

Just grasping at spokes, I mean straws... The...

Just grasping at spokes, I mean straws... The spokes where they cross, close to the hub they just pass each other, but at one of the crosses further out they are "laced", i.e., they actually press...
Forum: Folding Bikes
05-10-24, 01:30 AM
Replies: 2
Views: 201
Posted By Duragrouch

Sounds like you got a great deal. The Forte is...

Sounds like you got a great deal. The Forte is rated for higher rider weight so no surprise the frame feels solid, if a bit heavier. It should do you well, and lower gearing is possible if needed....
Forum: Folding Bikes
05-10-24, 01:23 AM
Replies: 18
Views: 454
Posted By Duragrouch

Jipe knows a ton about the Birdy. I don't, but...

Jipe knows a ton about the Birdy. I don't, but from what I've read, the front and rear suspension will either be loved for its more supple ride than others, or unloved because of the bobbing of the...
Forum: Folding Bikes
05-09-24, 11:19 PM
Replies: 18
Views: 9,758
Posted By Duragrouch

(above) My 20" wheel folder has become my daily...

(above) My 20" wheel folder has become my daily exercise and townie for 10 years now. Full racks and panniers. As such, it requires as much regular maintenance as any bike, but no more so either. The...
Forum: Touring
05-09-24, 10:14 PM
Replies: 143
Views: 9,661
Posted By Duragrouch

I was not aware of import protections on 26"...

I was not aware of import protections on 26" wheel bikes. Do tell of and when please, that's interesting.
Forum: Folding Bikes
05-09-24, 10:04 PM
Replies: 13
Views: 439
Posted By Duragrouch

Oh, that's easier to remedy. My Dahon was old...

Oh, that's easier to remedy. My Dahon was old enough that it came with cone and cup bearings and not cartridge, so the BB shell faces were already smooth from the fixed cup and lockring bearing...
Forum: Folding Bikes
05-09-24, 09:46 PM
Replies: 52
Views: 3,066
Posted By Duragrouch

(above) Gosh, your pic, a bit fuzzy, but looks...

(above) Gosh, your pic, a bit fuzzy, but looks like a black snap ring on the bottom, but I see none in the rebuild kit shot. Is that long pin in a blind hole, or is there a hole on the opposite side...
Forum: General Cycling Discussion
05-09-24, 09:38 PM
Replies: 98
Views: 3,652
Posted By Duragrouch

Thanks! Pinion looks promising, 18 speeds...

Thanks!

Pinion looks promising, 18 speeds with no duplicates, durable, if maintenance is just drain and refill lube, that is great. Was first seen on only bikes $5000+ and in Europe; Another...
Forum: General Cycling Discussion
05-09-24, 09:32 PM
Replies: 98
Views: 3,652
Posted By Duragrouch

Interesting, though mention in article of "lack...

Interesting, though mention in article of "lack of prawls", must be an idiom or portmaneau of pawns or pawls or prawns.
Forum: Classic & Vintage
05-09-24, 05:30 AM
Replies: 288
Views: 76,018
Posted By Duragrouch

The chain and seatstays might have been thicker...

The chain and seatstays might have been thicker and heavier. But the downtube reached its peak in 1989 at 2" diameter, which is mighty stiff.

(Text on printed page): Where he's standing, it's...
Forum: Bicycle Mechanics
05-09-24, 05:24 AM
Replies: 57
Views: 1,365
Posted By Duragrouch

Thanks. I may ask a retired techie about that.

Thanks. I may ask a retired techie about that.
Forum: Folding Bikes
05-09-24, 05:18 AM
Replies: 13
Views: 439
Posted By Duragrouch

The Launch hinge latch spindle is loaded in...

The Launch hinge latch spindle is loaded in tension, so should not need the diameter of their typical latch rods which are loaded in compression so more susceptible to buckling failure. The Launch...
Forum: Bicycle Mechanics
05-09-24, 01:31 AM
Replies: 57
Views: 1,365
Posted By Duragrouch

I think if A=B, B=A; That if cold welding due to...

I think if A=B, B=A; That if cold welding due to galling can lift away metal, it can also be redeposited. From wiki:
Forum: Bicycle Mechanics
05-09-24, 01:21 AM
Replies: 57
Views: 1,365
Posted By Duragrouch

Good point! I knew of thermite from other things,...

Good point! I knew of thermite from other things, but never made the connection on grinders. Thanks. I recall stationary disc/belt sanders used for chamfering edges and other stuff on materials of...
Forum: Bicycle Mechanics
05-09-24, 12:18 AM
Replies: 44
Views: 1,223
Posted By Duragrouch

I am not an expert on motor oil, but my...

I am not an expert on motor oil, but my understanding is, some additives are to reduce viscosity breakdown at elevated temperatures and duration, and (among others) there are anti-wear additives,...
Forum: General Cycling Discussion
05-08-24, 11:31 PM
Replies: 35
Views: 1,699
Posted By Duragrouch

In many industries in the past, once something...

In many industries in the past, once something was innovated, many major manufacturers jumped right into the same market. These days, I think the majors consider more carefully if they can do it...
Forum: Touring
05-08-24, 11:03 PM
Replies: 143
Views: 9,661
Posted By Duragrouch

I truly do salute the extensive research and...

I truly do salute the extensive research and factual debate above.

However, I gently and tactfully suggest the debate end, before the mods close the thread. It's a bit embarrassing the number of...
Forum: General Cycling Discussion
05-08-24, 10:38 PM
Replies: 98
Views: 3,652
Posted By Duragrouch

Chinese bikes: The government destroyed bicycle...

Chinese bikes: The government destroyed bicycle paradise; Used to be, owning a bike was a rite of passage to be married and have a family, the streets filled with all bicycles, people going to work...
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