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-   -   The Cave of Bad Ideas (https://www.bikeforums.net/classic-vintage/1310342-cave-bad-ideas.html)

jolly_codger 11-28-25 03:37 PM


Originally Posted by Fredo76 (Post 23651200)

That is a thing of garage-engineering beauty! :love:I have to remember the use of valve stem caps as finishing nuts; just freaking awesome.

USAZorro 11-28-25 11:10 PM


Originally Posted by Kevin7 (Post 23569677)
Another 'Not a hack per say, but mounting a thumbie inboard with inverse brake levers causes gear change when braking. :innocent:
Actually, if it shifted to a lower gear it would be better. But it doesn't..so it's not. :crash:


https://cimg1.ibsrv.net/gimg/bikefor...f0579e330d.jpg

Is there a way to mount it so it's outboard without having to re-do your bar covering? That way it would interfere AND give you the auto downshift.

USAZorro 11-28-25 11:28 PM


Originally Posted by pastorbobnlnh (Post 23570283)
Here's a picture of my 54-speed Cannondale.

I recently switched out the bars that I bought from Velo Orange. While browsing their site I spotted this front rack at a great price of $40 something. It's designed specifically for a certain type of bars which have four mounting points. I thought I could make it work with a bit of creativity.
https://cimg5.ibsrv.net/gimg/bikefor...af8d9d4109.jpg
https://cimg0.ibsrv.net/gimg/bikefor...b24a7cbc39.jpg
At the bars I used two of VO's handlebar water cage mounts. However, it still needed support from below. I had the struts from an unused rear rack, but where and how would I attach them to the frame or fork? The Headshok suspension presents challenges. The brake bosses were not an option.





Egad!

Why? Why is that headlamp set where it will illuminate the back of what you have on the rack, but not the road ahead? https://www.bikeforums.net/images/smilies/biker1.gif

jPrichard10 11-28-25 11:28 PM


Originally Posted by ShannonM (Post 23651515)
Now this, Ladies n' Germs, is what I'm talkin' aboot! From the whatever-in-hell-that-thing-is eyebolt thing, to the "use anything round with a hole through the middle" washer stacks used to square up the rack, and the pièce de résistance... or maybe coup de grâce... the presta valve caps as safety caps for the cut ends of the allthread. (That stuff can cut the crap outta ya!)

And Bella? Funky? Bella is funky enough to be George Clinton's bar bike.

--Shannon

I agree, the presta valve caps are really the icing on the cake here.

noglider 11-29-25 06:45 AM

This thread is an eye opener, literally. I have widened my eyes with every post. I can't decide which I love the most. But ShannonM, I'm disappointed you don't show us pictures of the bad front derailleur idea.

Bad idea 97: There was a bike parked outside in my neighborhood for a couple of years which had a tree limb as the handlebar.

Bad idea 48: Once, I put a centerpull brake caliper on the rear a ladies bike. I routed the brake cable in the normal way, looping up from the top tube to the caliper. I anchored the cable end to the seat lug somehow and installed the cable stop/adjuster to the yoke which operates the brake. It looked weird but worked fine.

pastorbobnlnh 11-29-25 08:04 AM


Originally Posted by USAZorro (Post 23652156)
Egad!

Why? Why is that headlamp set where it will illuminate the back of what you have on the rack, but not the road ahead? https://www.bikeforums.net/images/smilies/biker1.gif

At the time I took the picture, just after assembly, I was going for a ride in the daylight and transporting nothing on the rack. The light was there for a visual clue to approaching automotive drivers, i.e. it was there for safety reasons and not illumination for after sunset riding.

In the long term I plan to make a leather bag for the rack and mount an appropriate light to the eyelet at the bottom front of the rack. The light will then be located between the fender and the rack and will be unobstructed. Hopefully it will appeal to your sense of style and practicality. :thumb:

lnanek 11-29-25 09:55 AM

Tried to use electrical tape and carbon grip paste to protect a new carbon handlebar on my ancient 26" Trek MTB from the 90s:
https://cimg0.ibsrv.net/gimg/bikefor...e746d543bf.jpg
Worked terribly. Torqued to 5nm, the handlebars would start slipping, rotating down every week. The electrical tape just seemed to make things more slippery. The stem only having two bolts at the handlebar clamp instead of 4 didn't help.

Eventually it slipped on a long trip, I didn't have a torque wrench handy, over-torqued it in frustration trying to get it functional enough to ride home, and CRACK.

Kevin7 11-29-25 10:32 AM


Originally Posted by USAZorro (Post 23652152)
Is there a way to mount it so it's outboard without having to re-do your bar covering? That way it would interfere AND give you the auto downshift.

Nah, just a simple change in how you grip it if/when braking. It downshifts very smoothly. :)

Reynolds 11-29-25 01:08 PM

https://cimg7.ibsrv.net/gimg/bikefor...666ee1afef.jpg
https://cimg8.ibsrv.net/gimg/bikefor...4d1099f4c6.jpg
Made a mount for my Cateye with a MTB barend.

USAZorro 11-29-25 02:50 PM


Originally Posted by pastorbobnlnh (Post 23652215)
At the time I took the picture, just after assembly, I was going for a ride in the daylight and transporting nothing on the rack. The light was there for a visual clue to approaching automotive drivers, i.e. it was there for safety reasons and not illumination for after sunset riding.

In the long term I plan to make a leather bag for the rack and mount an appropriate light to the eyelet at the bottom front of the rack. The light will then be located between the fender and the rack and will be unobstructed. Hopefully it will appeal to your sense of style and practicality. :thumb:

We'd hate to lose you because an oncoming driver didn't notice you and drifted into your lane because the stack of hymnals on the front rack was blocking the light.

jolly_codger 11-29-25 03:44 PM


Originally Posted by Reynolds (Post 23652390)
Made a mount for my Cateye with a MTB barend.

Bar ends come in handy; here's a picture of how I mounted my Zwift Click shifters using an accessory bar & bar ends to put the shifters right at my thumbs when on the hoods:
https://cimg2.ibsrv.net/gimg/bikefor...fa71df6062.jpg

Duragrouch 11-30-25 01:32 AM


Originally Posted by pastorbobnlnh (Post 23651729)
Duragrouch , nicely done! I own a similar Dahon that I've modified several different times. It is currently set-up with drop bars and Shimano 105 gear. But my plan after the new year for a redux is to use these items I just ordered from Velo Orange.
https://cimg4.ibsrv.net/gimg/bikefor...f7cef0b4a9.jpg
I also ordered matching brake cables.

The microSHIFT Advent set will be paired with my SRAM DualDrive 3-speed IGH rear wheel and a dynamo front. I plan to keep it as a "Zero Bike" at my daughter's home in Knoxville and use it for rides in the Smokies foothills.

My being in that exact same area for a few years, is what made me change my 700c road bike from a (flatland) road double to a road triple, commuting up the mild grades on Pellissippi Parkway between knox and oak ridge. Had I known how to climb better standing at the time, I probably could have gotten by with the double. But I like having the option to spin when needed. And I needed that low when biking around Norris Dam. In fact, this pic circa 2005 has a map of that area on the bars for guidance:

https://cimg4.ibsrv.net/gimg/bikefor...d778873520.jpg

For serious hills like where I live now, even with the small 20"/406 wheels on the Dahon, a 52-30 low was not low enough. Fitting a wide double crank (50/34) was the best thing I ever did, stalled years before doing it, shouldn't have. But the IGH should get you there. I just preferred to avoid IGH for a number of reasons. I've seen several Dahon Speed TR ("touring") for sale, they have that setup, but on a long tour, I'd rather have all-external gearing, it's hard to find places on the road who can repair any IGH, and even in my town, all the bike shops refer folks to the one shop specializing in that.

What do you mean "zero bike"?

Aubergine 11-30-25 03:50 AM


Originally Posted by jolly_codger (Post 23651962)
That is a thing of garage-engineering beauty! :love:I have to remember the use of valve stem caps as finishing nuts; just freaking awesome.

I also appreciate it, but . . . a couple of p clamps to mount the rack ends to the seat stays would be simpler and more solid.

Doc Sharptail 11-30-25 04:39 AM


Originally Posted by Aubergine (Post 23652758)
I also appreciate it, but . . . a couple of p clamps to mount the rack ends to the seat stays would be simpler and more solid.

Castle nuts should be a staple of everyone's parts bins.

I can see it from a "Don't-Mar-The-Paint" perspective as well. I should take some related to this subject pix and post here.

ETA:
https://i.imgur.com/wS9WUTr.jpg

I actually prefer the Pletscher style rear racks. They can be hard to find at times. About all this one is good for is tying the U-lock to.
The S/S straps on this "rack" don't pass through, or around, the seat stays, hence the bending. For the light duty purpose intended, it works.


-D.S.

pastorbobnlnh 11-30-25 06:58 AM


Originally Posted by Duragrouch (Post 23652740)
My being in that exact same area for a few years, is what made me change my 700c road bike from a (flatland) road double to a road triple, commuting up the mild grades on Pellissippi Parkway between knox and oak ridge....

What do you mean "zero bike"?

My daughter and son-in-law (he is a native and UT grad) live about a 1/2 mile south on Rocky Hill just off of Northshore. Dangerous traffic in the area, but I'm told there is nice riding to the east of the TN River which requires, plenty of low gearing.

I'll probably limit myself to 20–30-mile rides, so I won't worry too much. I've had great luck with the DualDrive on my 2003 Cannondale. It has never given me any problems so I'm not concerned about reliability in this application..

I believe gugie came up with the term "Zero Bike." It is a bike which you store in a distant location for riding when you visit. Since it is not part of the "at-home" collection, it does not figure into the count when your SO tells friends, "Bob has 20 :eek: bikes!" I have limited storage space there so the Dahon needs to be folded when I'm not there and kept in a closet.

oneclick 11-30-25 09:32 AM


Originally Posted by ShannonM (Post 23651515)
From the whatever-in-hell-that-thing-is eyebolt thing,

Botormike hydraulic brake banjo bolt.

gugie 11-30-25 09:43 AM


Originally Posted by pastorbobnlnh (Post 23652798)
I believe gugie came up with the term "Zero Bike."

Technically my phone did.

And a clarification - although zero bikes typically reside far from the owner’s home, they could be ar a neighbor’s house. As long as your significant other doesn’t know about it and doesn’t count as part of your collection, it’s a zero bike.

bulgie 11-30-25 04:49 PM


Originally Posted by gugie (Post 23652870)
As long as your significant other doesn’t know about it and doesn’t count as part of your collection, it’s a zero bike.

haha Laurie has more bikes than I do, and she's the one currently shopping for another, while I feel like I have enough bikes. I know, "enough bikes" is blasphemy, sorry. I'll be getting another one soon enough, just not looking right now. When I finish doing braze-ons and painting this vintage Frenchie I'm working on, and assemble it into a bike, that counts as n+1 right? If frames and parts count as bikes, then I have more than she does, but n doesn't increment when I build one up.

There is some competition for the finite* number of bike hanging hooks, so we basically define n as the number that need hooks. But other than that she's happy when I get another bike. I think in her mind it kinda gives her permission to get herself another too. Not that she needs anyone's permission.

* I have ideas for where to add more bike hanging hooks, so though the curve appears to be nearing an asymptote, I don't know yet if it's actually finite.

Doc Sharptail 11-30-25 05:54 PM


Originally Posted by bulgie (Post 23653201)

the curve appears to be nearing an asymptote,

**Gurgle** :roflmao:
For a guy that considers himself at last knowledgeable on some words, this one's certainly a headscratcher.
Do enlighten us less edumacated rabble. ;)

-D.S.

bulgie 11-30-25 06:19 PM


Originally Posted by Doc Sharptail (Post 23653248)
**Gurgle** :roflmao:
For a guy that considers himself at last knowledgeable on some words, this one's certainly a headscratcher.
Do enlighten us less edumacated rabble. ;)

-D.S.

I ain't no mathemagician, but I use it as lay people do, with the second definition below (from Wiktionary):
asymptote
(1) (mathematical analysis) A straight line which a curve approaches arbitrarily closely as it goes to infinity. The limit of the curve; its tangent "at infinity".
(2) (by extension, figuratively) Anything which comes near to but never meets something else.
So, my number of bike storage hooks, graphed as a function of time, keeps getting larger. Does it approach some asymptote that it can never exceed, or is it in fact infinite? Logic suggests the former, since my basement is finite and there's a limit to how tightly you can pack bikes together. But we have our best minds working on a solution to that.

ShannonM 11-30-25 07:33 PM


Originally Posted by bulgie (Post 23653281)
I ain't no mathemagician, but I use it as lay people do, with the second definition below (from Wiktionary):
asymptote
(1) (mathematical analysis) A straight line which a curve approaches arbitrarily closely as it goes to infinity. The limit of the curve; its tangent "at infinity".
(2) (by extension, figuratively) Anything which comes near to but never meets something else.
So, my number of bike storage hooks, graphed as a function of time, keeps getting larger. Does it approach some asymptote that it can never exceed, or is it in fact infinite? Logic suggests the former, since my basement is finite and there's a limit to how tightly you can pack bikes together. But we have our best minds working on a solution to that.

If y'all solve it, patent it immediately. You'll have just invented an FTL drive, as well as a desert topping bike storage system.

--Shannon

noglider 11-30-25 07:33 PM

An asymptote is a curve that approaches a line without ever touching or crossing it.

Here is a graph of y = 1 / x

It approaches zero but is never zero.


https://cimg6.ibsrv.net/gimg/bikefor...be41883fab.png

ShannonM 11-30-25 07:36 PM


Originally Posted by noglider (Post 23653323)
An asymptote is a curve that approaches a line without ever touching or crossing it.

Here is a graph of y = 1 / x

It approaches zero but is never zero.


https://cimg6.ibsrv.net/gimg/bikefor...be41883fab.png

Isn't the asymptote the line, rather than the curve? (IOW, the value that can't ever quite be reached.)

--Shannon

RCMoeur 11-30-25 08:28 PM

I think there could also be an asymptotic curve involved in bicycle storage. In increasing density:

Bikes side by side with enough room to readily access them (typical non-aficionado storage).

Bikes nose to tail to fit more in laterally.

Vertically-hung bikes.

Bikes with removed front wheels.

Double-stacked bikes using holders, trays, or shelves. (most of my bike storage is somewhere in this range)

Dismantled bicycles. (several project bikes in the trailer are at this stage)

Cut-apart bicycles.

Bicycles run through a shredder.

I'm sure I missed some intermediate steps, but using the final option could get hundreds of bicycles in a single shed. Although it would take a very long time and possibly breaking the laws of thermodynamics to get one together for the morning's ride. But it is a theoretical solution for the storage problem.

Duragrouch 11-30-25 11:43 PM


Originally Posted by Aubergine (Post 23652758)
I also appreciate it, but . . . a couple of p clamps to mount the rack ends to the seat stays would be simpler and more solid.

Beat me to it.


Originally Posted by Doc Sharptail (Post 23652767)
I can see it from a "Don't-Mar-The-Paint" perspective as well. I should take some related to this subject pix and post here.
-D.S.

Rubber covered stainless steel P-clamps are very stable and don't mar the paint. In my town, they are available in multiple diameters at the commercial marine supply shop, in packages of like 10 for not much money. I'm sure they can also be had via McMaster-Carr or Amazon. Spend more for the stainless steel instead of just plated, it's worth it.


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