my longest ride on a folding bike = 87.5 miles. the aero bars helped as the well as the clipless pedals.

Tell us a little about your bike. I see it's a Zisso. What model? What gear range does it have? Did you find the low gears good for hills or were you struggling on them?

This was mostly a flat course.

Zizzo Liberte
Chain ring = 58T, original 48T
Gear set = 11-32T, 8Speed
MKS clipless, quick release, pedals
Red Shift quick release aero bars
Ergon gp5 Rohloff
Tires, smooth 1.25-inch, original 1.5-inch

I've gone 75 with panniers. So you're ride is definitely damn good.

Ya know what you eat after a long ride?

Whatever the [expletive deleted] you want to!

I had a problem. After that long ride, one bite a food and I had to run to the bathroom as my bowels evacuated. Is that common?

I've never did a ride as long as what you did (my top is 50) but it's never happened to me. It sounds like more of a gastrointestinal issue caused by something you ate along the way?

No, it seems that if I exceed 65 miles or so. I have to watch it. I need a better recovery routine.

I try to keep it under 10 miles, round trip. But, I rode 50 miles, round trip, on my Dahon, when my road bike was hospitalized.

I prefer a full-size bike for longer rides, as they are faster. But I’ve done some 70-80km rides on my Moulton. It runs a Dura-Ace/XTR 11 speed Di2 driveline, with a Dura Ace 7700 crankset. I’ll be using this bike for the Rainbow Bridge ride here in Tokyo in December.

The Dahon seems comfortable and practical, while the Moulton is a true piece of artwork.

I have never heard of that. I suspect that is uncommon.

My folding bike has 24 inch wheels, rides as well as a full size bike, so I can't compare my folder to yours.

My longest ride this year was 90 miles, most of that was on gravel, that was on a full size heavy duty touring bike. Last year rode two 200k brevets on my rando bike. And last year on my bike tour with full camping gear load (four panniers) did two days of 80 plus miles and two days of 70 plus miles, and plenty of shorter days on my two week tour. And all of this included plenty of hills.

Maybe if you do more endurance riding, your intestinal situation will resolve itself. Your body may have been quite stressed if you don't do many multi-hour long rides.

I’ve been doing OMAD (one meal a day) for the past six months to lose weight and maintain it. That may have been a factor. OMAD seems to be working since my weight is now steady at 165 lbs (75 kg). I’m 6 feet tall and applying for Medicare this year. I plan to spend my SS money on bikes.

A man (I assume) who's got his priorities straight.

THAT'S a small wheel bike where it's a feature, not a bug, even on long rides. A big clear Zipper fairing used to be de rigueur on racing Moultons, was supposed to be lower drag than full-size bikes, but not sure against modern 700c race bikes.

I rode a Dahon Mu XL to work and back on "Bike-To-Work Day", a total distance of 94 miles. I overshot home by 3 miles on the way back so it would be a Century. Not a sustainable form of commuting.
A few years later, I rode my then-new Tern Verge S11i on a fund-raising Century for the Leukemia and Lymphoma Society, from Highland Park, IL, to Woodstock, IL, and back. There was a fair amount of climbing. I switched out the stock pedals for a pair of SPDs so I could wear shoes with cleats, which was a great help.
A folding bike, properly set up, should be fine for reasonably long rides.

I was going to try for a century this year on a Zizzo but I am running out of daylight hours. I fly to my bike course, and I don't like to fly at night. I purchased some new derailleur gears for my M310 because I noticed some drag. Maybe they will work?

https://www.amazon.com/dp/B0CG48KWZG...sin_title&th=1

Night is the BEST time to fly!
Less traffic better weather, better views (so many stars)
Peaceful and magnificent.

Larger pulleys are usually quieter, but would reduce the ground clearance, which is a problem for folders

(smile)

Brompton.85 miles in a day is my max so far.

Back in the '90s, a sales rep from several companies that were suppliers, he flew a nice Cessna single, can't remember which one. He was IFR rated but said he didn't fly at night, even VFR, because if he had to set it down, you just can't see a thing. Not if a field is hard or plowed or planted, not wires over a road, sometimes not even the road if in a rural area. Once seen, landing lights can help, but again, can't see the road to find it, nor the wires if you did.

Congrats. It is hard work and takes a lot of will power to reduce weight by calorie reduction.

I fly a single-engine airplane, and I usually declare an emergency before taking off since it only has one engine.

Derailleurs for indexed gears have two different jockey wheels. If you look at a derailleur that is not installed on a bike, you can move the upper jockey wheel side to side by a small margin. Lower jockey wheel does not move side to side.

I have no idea if that kit with new wheels is built that way. If not and if your jockey wheels do not allow that extra play for side to side motion, if your drive train becomes a bit noisier or if the shifting does not work well, that could be the reason.

If you have not changed them yet, you can check this on your existing setup.

During a night flight, if you have an engine failure and MUST land off airport at night, turn on the landing light for illumination.
If you don't like what you see.... turn it off.

Ceramic derailleur cogs. They seem to work on a Zizzo with a 58T front chain ring, but they make more noise than the plastic they replaced.

Altus cogs: 15T lower, 13T upper

da spin movie....
https://photos.app.goo.gl/8vnVgryrvJ1Pyh4h9