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Search: Posts Made By: JohnJ80
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Forum: Road Cycling
09-26-20, 04:06 PM
Replies: 86
Views: 4,151
Posted By JohnJ80

sure looks like it is to me. She looked like she...

sure looks like it is to me. She looked like she hit either a road imperfection or something on the road when the bars jump. Thatís a classic ďimpulse responseĒ from control theory and it looks to me...
09-22-20, 09:47 PM
Replies: 167
Views: 13,414
Posted By JohnJ80

Itís actually quite dangerous to cross in front...

Itís actually quite dangerous to cross in front of them. This is a situation where you have a right of way vehicle stopped in a place that drivers behind are not expecting to see a stopped vehicle. ...
09-22-20, 08:12 PM
Replies: 167
Views: 13,414
Posted By JohnJ80

Where I live and ride, Iíve noticed a distinct...

Where I live and ride, Iíve noticed a distinct improvement in rider and pedestrian behavior with a flashing day light. That means more safety for both me and the other guy. Tough luck if itís...
09-21-20, 08:34 PM
Replies: 167
Views: 13,414
Posted By JohnJ80

.... which wouldnít have become a think if people...

.... which wouldnít have become a think if people didnít wander all over the path and ride two abreast on a narrow bike path - never mind the collisions. And itís just getting worse with the...
Forum: Road Cycling
09-19-20, 01:59 PM
Replies: 61
Views: 2,680
Posted By JohnJ80

Indoor? Likely sweat. Just about as corrosive...

Indoor? Likely sweat. Just about as corrosive as it gets. A few drops would work itís way around the chain fast.
Forum: Road Cycling
09-18-20, 07:01 PM
Replies: 61
Views: 2,680
Posted By JohnJ80

Itís now got 2750 miles, no appreciable wear,...

Itís now got 2750 miles, no appreciable wear, itís been ridden in the wet and there is no rust.

I donít know what you did to your chain, but alcohol wonít rust it - it evaporates too fast. Itís...
Forum: Road Cycling
09-18-20, 09:52 AM
Replies: 61
Views: 2,680
Posted By JohnJ80

no, itís a liquid wax in an alcohol carrier. ...

no, itís a liquid wax in an alcohol carrier. When the carrier evaporates, it leaves the wax based lubricant behind. The carrier gets it to wick into the rollers. Thereís a lot of information on...
09-09-20, 04:34 PM
Replies: 167
Views: 13,414
Posted By JohnJ80

1 and 4 are - far and away - the biggest problem....

1 and 4 are - far and away - the biggest problem. I now ride with a camera and contact the police with video evidence. The cops call the drivers up and educate them in lieu of giving them a ticket.
...
09-09-20, 04:24 PM
Replies: 8
Views: 412
Posted By JohnJ80

^this. Get a carbon soled shoe. Theyíre so...

^this.

Get a carbon soled shoe. Theyíre so stiff they simply wonít bend. If they donít bend, then the arthritic toe canít bend and the joint wonít hurt.

I have some shoes that are for...
Forum: Road Cycling
09-09-20, 04:09 PM
Replies: 86
Views: 4,151
Posted By JohnJ80

Very good point about wheel balance. If the...

Very good point about wheel balance. If the system is underdamped or resonant and that wheel imbalance hits the right frequency, it would probably set off the wobble behavior. Silca makes some...
Forum: Road Cycling
09-07-20, 06:27 PM
Replies: 86
Views: 4,151
Posted By JohnJ80

Hereís a long discussion by Lennard Zinn on bike...

Hereís a long discussion by Lennard Zinn on bike geometry issues related to wobble and mechanical resonance.
...
09-06-20, 08:50 PM
Replies: 7
Views: 305
Posted By JohnJ80

disagree. I use an Apple AirPod in my right...

disagree.

I use an Apple AirPod in my right ear and I cannot distinguish a difference with it in or out. There are many earbuds that work, itís not limited to none conduction vs in ear canal.
09-06-20, 02:31 PM
Replies: 7
Views: 305
Posted By JohnJ80

The apple ones work the best for Siri. I have...

The apple ones work the best for Siri. I have both the Airpods II and the Airpods Pro and I’d say they both work equally well. The Pro, with it’s ability to do active noise cancellation can work...
Forum: Road Cycling
09-06-20, 02:17 PM
Replies: 4
Views: 312
Posted By JohnJ80

I very picky about my shoe fit for cycling shoes...

I very picky about my shoe fit for cycling shoes and I have a hard time getting a fit thatís right. On line suppliers have a lot more inventory and choice than do local bike stores typically. The...
Forum: Road Cycling
09-06-20, 10:11 AM
Replies: 28
Views: 1,182
Posted By JohnJ80

Anywhere around the Twin Cities but out of the...

Anywhere around the Twin Cities but out of the city. We have more gravel roads and paved quiet country roads than almost any place Iíve been. Western Wisconsin is also another good place. Back in...
Forum: Road Cycling
09-06-20, 10:00 AM
Replies: 86
Views: 4,151
Posted By JohnJ80

I’m an electrical engineer with a background in...

I’m an electrical engineer with a background in control system and semiconductor, but the concepts in a mechanical system are the same (and so is the math). Basically, any time you have an...
Forum: Road Cycling
09-05-20, 09:10 AM
Replies: 61
Views: 2,680
Posted By JohnJ80

Well done. Exactly right. Melting paraffin on a...

Well done. Exactly right. Melting paraffin on a burner, especially gas, is highly dangerous. If youíve ever seen a house fire from ignition, you know just how little time between a small fire and...
Forum: Road Cycling
09-05-20, 06:23 AM
Replies: 61
Views: 2,680
Posted By JohnJ80

Actually, we do. What youíre advocating is...

Actually, we do. What youíre advocating is needlessly dangerous and itís not funny.

J.
Forum: Road Cycling
09-04-20, 10:14 PM
Replies: 86
Views: 4,151
Posted By JohnJ80

correct. I donít agree. the range of uses...

correct. I donít agree.

the range of uses is so wide, the variance of users also so wide, the virtually infinite variation of road surfaces and conditions are impossible for a manufacturer to...
09-04-20, 11:53 AM
Replies: 26
Views: 1,713
Posted By JohnJ80

you can connect an external HRM to your Apple...

you can connect an external HRM to your Apple Watch which will significantly reduce the battery consumption. Wahoo makes a nice HRM that you put around your upper arm. Iíve had them for years and...
Forum: Road Cycling
09-04-20, 11:51 AM
Replies: 86
Views: 4,151
Posted By JohnJ80

Not sure I agree with that. Itís a classical...

Not sure I agree with that. Itís a classical mechanical resonance or under damped issue where some repetitive frequency at the right frequency sets up the wobble. Depending on whatís wobbling - top...
Forum: Road Cycling
09-04-20, 11:27 AM
Replies: 61
Views: 2,680
Posted By JohnJ80

^this. After the first ride, you can take a...

^this.

After the first ride, you can take a toothbrush and brush off any left on the chain. You can use a paper towel with alcohol on it and hold against derailleur wheels to get off any buildup....
Forum: Road Cycling
09-04-20, 11:21 AM
Replies: 15
Views: 820
Posted By JohnJ80

Very high probability this is your problem. The...

Very high probability this is your problem. The sciatic nerve runs under the piriformis muscle (used to rotate the leg) and can get irritated either by cycling or so itís noticeable while cycling. ...
Forum: Touring
09-02-20, 04:35 PM
Replies: 40
Views: 2,082
Posted By JohnJ80

great write up - thank you! Iíve stored this in...

great write up - thank you! Iíve stored this in my offline archive for future reference.

j.
Forum: Touring
09-02-20, 08:58 AM
Replies: 40
Views: 2,082
Posted By JohnJ80

I generally need about 60-70 liters of capacity...

I generally need about 60-70 liters of capacity for long time touring. The Radical Design Cyclone has more than enough at 100 liters and with my Orucase Airport Ninja bike case bag gives me my two...
Forum: Touring
09-01-20, 07:45 PM
Replies: 40
Views: 2,082
Posted By JohnJ80

Not if you do it correctly. The Bob Yak will...

Not if you do it correctly. The Bob Yak will disassemble and fit with all your gear in an Ortleb Big Zip that meets airline baggage size limits. The Big Zip, if you use it correctly can also be the...
Forum: Touring
08-31-20, 04:01 PM
Replies: 40
Views: 2,082
Posted By JohnJ80

Glad to help. The overwhelming percentage of...

Glad to help. The overwhelming percentage of touring cyclists use panniers, but there is really no overriding reason to do so and it boils down to personal preference and cost. When you factor in...
Forum: Touring
08-31-20, 01:23 PM
Replies: 40
Views: 2,082
Posted By JohnJ80

I would. Weight is weight and if you have to haul...

I would. Weight is weight and if you have to haul it up over a hill, it doesn’t matter if it’s on the bike, on you, in your trailer or on your rack.

We’re going to go to trailers instead of...
Forum: Road Cycling
08-12-20, 02:10 PM
Replies: 14
Views: 443
Posted By JohnJ80

Fascinating and entertaining story here about...

Fascinating and entertaining story here about designing Zipp carbon wheels for Roubaix which ultimately had a big impact on racing. There is an anecdote here that they kept blowing up wheels and...
Forum: Road Cycling
08-12-20, 12:04 PM
Replies: 14
Views: 443
Posted By JohnJ80

I've found Silca's tire pressure calculator to...

I've found Silca's tire pressure calculator to work extremely well for me. Takes into account road surface, rider weight, bike geometry etc...

Goes without saying though, you need to make sure...
08-02-20, 03:12 PM
Replies: 16
Views: 1,029
Posted By JohnJ80

^this. Aftershokz Titanium...

^this.

Aftershokz Titanium (https://aftershokz.com/products/titanium) for entry level or Aeropex (https://aftershokz.com/products/aeropex). Both work fine with sunglasses and helmets. I've used...
Forum: Road Cycling
08-02-20, 02:31 PM
Replies: 24
Views: 1,015
Posted By JohnJ80

The Effetto Mariposa Carogna works tape...

The Effetto Mariposa Carogna works tape exceptionally well and is simple to use. I've been using it since it came out. Lennard Zinn now says that's all he uses on his tubulars. There is no way it's...
Forum: Road Cycling
07-23-20, 08:41 AM
Replies: 8
Views: 478
Posted By JohnJ80

That's incorrect. Enve specs the 3.4AR for...

That's incorrect. Enve specs the 3.4AR for 28-32c tires specifically - not a minimum 32mm tire width.

https://www.enve.com/en/products/ses-3-4-ar/
Forum: Touring
07-14-20, 08:15 PM
Replies: 21
Views: 1,918
Posted By JohnJ80

Tailfin. Expensive but worth it. It's...

Tailfin. Expensive but worth it. It's specifically designed for performance road bikes but it will handle pretty substantial weight. We've used them since the launched several years ago. Top end...
07-14-20, 08:12 PM
Replies: 17
Views: 844
Posted By JohnJ80

I've had it. Did PT but it kind of worked itself...

I've had it. Did PT but it kind of worked itself out on it's own. Apparently that's a lot of how this goes according to my PT. Part of the "getting older just sucks" lesson that you get to...
Forum: Road Cycling
07-14-20, 08:10 PM
Replies: 22
Views: 891
Posted By JohnJ80

THere's a number of bike apps available on...

THere's a number of bike apps available on smartphones but the biggest problem is that they won't connect on ANT+ so you'll have to be careful about what sensors you select. The Stages PM does do BT...
Forum: Road Cycling
07-14-20, 07:59 PM
Replies: 22
Views: 891
Posted By JohnJ80

I presume you're going to use some sort of phone...

I presume you're going to use some sort of phone app instead of a bike computer?
Strava just changed all that in the last 30-45 days. They do have a page that describes what you can do with it ...
07-14-20, 04:38 PM
Replies: 39
Views: 16,949
Posted By JohnJ80

The radar doesn't even have to be particularly...

The radar doesn't even have to be particularly level and it doesn't even need to be visually available to the road behind. I had the original Varia that was horizontal and it was always hitting my...
Forum: Road Cycling
07-12-20, 08:42 AM
Replies: 38
Views: 1,781
Posted By JohnJ80

You're right, having a couple of wheel sets all...

You're right, having a couple of wheel sets all ready to go with different tires gives you a ton of flexibility with the right frame. I run everything tubeless for the ride and the reliability but...
Forum: Road Cycling
07-03-20, 08:10 PM
Replies: 56
Views: 3,981
Posted By JohnJ80

if your doc felt your condition warranted a...

if your doc felt your condition warranted a cardiac stress test, the LAST thing Iíd do is delay getting that done - COVID or not.
07-01-20, 10:41 AM
Replies: 11
Views: 869
Posted By JohnJ80

Glad to help. Hope you like it. Itís a...

Glad to help. Hope you like it.

Itís a pretty cool little product at no real price premium for a speed sensor.
06-29-20, 04:17 PM
Replies: 27
Views: 2,730
Posted By JohnJ80

We have an inreach Mini that we use for off grid...

We have an inreach Mini that we use for off grid activities. It will transmit your location to the inReach website where you or your wife can follow your progress. You can set the reporting interval...
06-29-20, 01:11 PM
Replies: 11
Views: 869
Posted By JohnJ80

Actually, no. My Garmin connect login is a...

Actually, no.

My Garmin connect login is a anonymized email address and ties back to nothing else. Besides that, read the terms from Garmin and Google and you'll find some stark differences.
06-29-20, 10:53 AM
Replies: 11
Views: 869
Posted By JohnJ80

This is why I have switched all my bikes over to...

This is why I have switched all my bikes over to the Garmin Speed Sensor 2. It records time, speed and distance so if something happens to the bike computer, you can get this all out via Garmin...
06-29-20, 10:04 AM
Replies: 26
Views: 3,493
Posted By JohnJ80

Sorry I didn't get to this yesterday. It's...

Sorry I didn't get to this yesterday. It's raining today, so I had some time to mess with this.

My wife and I ride with the Terrano XT version. We also had the X version for years but last year...
06-28-20, 05:15 PM
Replies: 52
Views: 12,377
Posted By JohnJ80

I wouldn't hold my breath on that one. Garmin did...

I wouldn't hold my breath on that one. Garmin did release a radar without a light though. That is interesting to me since you can stash it on the frame somewhere or even in your jersey pocket, and...
06-22-20, 06:06 PM
Replies: 12
Views: 988
Posted By JohnJ80

or a BT speaker. Audio TbT on a bike computer is...

or a BT speaker. Audio TbT on a bike computer is a game changer. To my knowledge only the Karoo can do that. Garmin and Wahoo only have a little buzzer and no BT audio capability.
06-22-20, 10:58 AM
Replies: 12
Views: 988
Posted By JohnJ80

Hammerhead Karoo can give audio turn by turn...

Hammerhead Karoo can give audio turn by turn directions.
06-15-20, 05:37 PM
Replies: 98
Views: 13,648
Posted By JohnJ80

That sort of is what my experience with ANT+...

That sort of is what my experience with ANT+ light networks was. Itís kind of a ďSimon saysĒ kind of thing. Itís not in the ďjust worksĒ category of tech products I own. Now that daytime running...
Forum: Road Cycling
06-08-20, 04:29 PM
Replies: 22
Views: 783
Posted By JohnJ80

In my experience, itís most likely holding the...

In my experience, itís most likely holding the bars incorrectly or putting too much weight on your hands due to either bike fit or core issues. But start with proper hand placement.

your hands...
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