Rear Wheel Removal Tip

[PCeBiker]

Both your reasoning and the theory behind it are wrong. Maximum pressure .neq. lowest rolling resistance.

I don't understand?
My tire didn't explode,...

My tire would however have a higher "net explosive quantity" at 42 psi.

 

[PedalUma]

applies to fat tires inflated to 8 psi

As long as you are on the bike. It would be fun to try it both ways.

 

[PCeBiker]

Both your reasoning and the theory behind it are wrong. Maximum pressure .neq. lowest rolling resistance.

BTW, I did get a 50% off coupon for my next Schwalbe purchase, but with the tax, shipping and new import tarriffs I wouldn't save any money.
I can get a new Schwalbe tire shipped from England for less money than half off shipped from the USA.


And,.. I replaced my rear tire with a new Super Moto-X tire that I already had on hand, but I'm still using the front tire (which wasn't nearly as bad) inflated to 30 psi now.

That's still a little high, but a lot more reasonable than 42 psi.

 

[PCeBiker]

As long as you are on the bike. It would be fun to try it both ways.

I'm pretty sure that a squashed tire will have a smaller effective circumference and the extra would just be scrubbing along the sidewalk?

 

[stompandgo]

".neq." is an engineering/scientific abbreviation for "not equal to", but you knew that.

I use the Silca and Vittoria tire pressure calculators and end up somewhere in the middle to start. One is high, the other is low.

 

[GMA52]

When I first got the bike they were a 14lbs of air pressure. I found the bike got much more stable at or near 20. I do not like doing anything at or near it’s maximum as it wears it out quicker. A circuit breaker in a house should only be operated at no more than 80% of it’s rated value. I guess that is what started me on not running things at their maximum. Think about a person, how long before they really tire out at more than 50 percent of their ability (20 in my case )

 

[PCeBiker]

".neq." is an engineering/scientific abbreviation for "not equal to", but you knew that.

I didn't actually know that, but I assumed that was what it meant.

I use the Silca and Vittoria tire pressure calculators and end up somewhere in the middle to start. One is high, the other is low.

My tires are labeled 20-42 psi, so I guess I'm okay at 30 psi.

I wonder how standard nobby fat tires work with the pressure calculators?

My impression is that fat tires are kind of a whole separate kettle of fish, and the science and technology is different.

It seems like 26"X4" tires vary widely with their actual dimensions as @GMA52 found out with his first set of replacement tires.

My first ebike has CST Big Boat 26"X4" tires with street tread.
Someone joined the forum a while back with the same ebike and needed new tires.

My Big Boat tires have about 3 mm of clearance with the chainstay and I thought a standard 26"X4" nobby tire wouldn't clear the chainstay.

There were no 26"X4" tires with a street tread that I could find at the time, so he bought a set of standard 26"X4" nobby tires that not only fit, but had Way More clearance than the original CST tire.

So the 26"X4" sizing seems to be kind of arbitrary or something with all kinds of variations and measurements.

 

[PedalUma]

@PCeBiker, If you are on a Caribbean vacation, toes in the sand, a little steel drum or reggae in the background with the warm sun and light sea breeze, passing bikinis, the occasional sound of a distant blender, why is a Colada such a PINA?

 

[Gionnirocket]

When I first got the bike they were a 14lbs of air pressure. I found the bike got much more stable at or near 20. I do not like doing anything at or near it’s maximum as it wears it out quicker. A circuit breaker in a house should only be operated at no more than 80% of it’s rated value. I guess that is what started me on not running things at their maximum. Think about a person, how long before they really tire out at more than 50 percent of their ability (20 in my case )

That's my go to for most everything, especially electrical. 80% gives you a nice headroom cushion and adds a lot of reliability.
As far as tire pressure I always start in the middle of the min/max rating... and then feel it out. I typically end up very close to where I started.

 

[PCeBiker]

I do not like doing anything at or near it’s maximum as it wears it out quicker.

That's my go to for most everything, especially electrical.

Yeah, me too, and especially electronics, but I didn't do that with my tire pressure for some reason?
I didn't think it applied to tires?

I bought a 5 amp power supply to charge my batteries, but wouldn't turn it up past ~3 amps thinking that it would last forever.
It didn't work.
It crapped out in a year, so I bought a better one that was only 3 amps, but cost 25% more.

I feel a lot more comfortable turning it up to maximum but I still don't.
It starts getting hot and the fan turns on full blast blowing hot air.

 

[PCeBiker]

@PCeBiker, If you are on a Caribbean vacation, toes in the sand, a little steel drum or reggae in the background with the warm sun and light sea breeze, passing bikinis, the occasional sound of a distant blender, why is a Colada such a PINA?

I don't know.

I haven't seen the movie, and my leafy greens aren't from the Philippines,..

 

[GMA52]

Yeah, me too, and especially electronics, but I didn't do that with my tire pressure for some reason?
I didn't think it applied to tires?

I bought a 5 amp power supply to charge my batteries, but wouldn't turn it up past ~3 amps thinking that it would last forever.
It didn't work.
It crapped out in a year, so I bought a better one that was only 3 amps, but cost 25% more.

I feel a lot more comfortable turning it up to maximum but I still don't.
It starts getting hot and the fan turns on full blast blowing hot air.

Some cheap stuff from China using cheap components and being overrated not going to last no how much you baby it. Mostly cheap capacitors failing. It is hard today to find some things that are reliable. I hate it when something worked very well and lasted many years yet when you replace with the “same” item it is horrible. Back in the 1950’s and early 60’s stuff from Japan did not last long.

 

[PCeBiker]

Some cheap stuff from China using cheap components and being overrated not going to last no how much you baby it. Mostly cheap capacitors failing.

Yup. I had a thermistor and a capacitor overheat and crap out on me,..

I managed to get the part number off the thermisitor and replaced it, but it didn't work, so I smashed the power supply with a hammer to make sure that I didn't waste any more time on a cheap piece of crap.

Post in thread 'Uck1 display' https://forums.electricbikereview.com/threads/uck1-display.56535/post-660611

It is hard today to find some things that are reliable. I hate it when something worked very well and lasted many years yet when you replace with the “same” item it is horrible.

This is my new power supply,..

It's still made in China, but it's from DigiKey in the US where they guarantee their stuff so they don't sell crap.
If something gets returned too often, they stop selling it.

Back in the 1950’s and early 60’s stuff from Japan did not last long. Dad who was in the

My brother-in-law said that you could buy a brand new Honda car (I forgot the model name) for less than $3000 when they were first available in Canada. (In the early 70's I think? during the "Oil Crisis")

It was supposed to be an entry level "disposable" car (kinda like the Hyundai Pony) but it just kept going no matter how badly you abused and neglected it.
The reputation caught on and people started liking Hondas.

Then Honda evolved into a high end car with Acura.


I'm a little younger and don't remember the "Jap Scrap" days.
I always remember Japanese as being quality, especially with electronics like Sony that invented compact disks.

I had the first Sony discman in 1981or 82 that my dad picked up for me in the US for $500 during a trip because it wasn't available in Canada.

That thing just Blew My Fricken Mind !!!
It was just Amazing !!

It was a demonstration model that came with a Huge expensive power supply and a battery pack that used 6 C batteries that were dead in just a few hours. (The laser and drive motors weren't very efficient)

I remember when it was 10 years old and I was "wearing" it (the battery pack had a shoulder strap) and people commented that it was Huge.

They thought it was a cassette player but it was a ten year old portable CD player and they were still impressed with it.

I took a lot of electronics classes in high-school and computer class used Commadore PET computers with a Stunning 64 kilobytes of total computing power.

 

[GMA52]

My brother took electronics in High School then Electronic Engineering at University of Houston. I wanted to take Electronics in High School but you had to take the class first in 10th grade then they would allow it in 11th. I had to take some other required courses in 10th grade and no room for electronics. I took it in College instead. Were you able to repair the Power Supply? If so any other issues with it?

 

[Chargeride]

Subaru were THE japcrap cars, I had one ,the four wheel drive GLF with the same boxer engine from the Imprezza.

It completely collapsed, took it for its annual check and the front struts pulled the mounts out of the inner wing as they jacked it up and they dropped right out and ended up pointing to the floor.
The guy pulled the sills off by hand and showed them to me on the floor.
It was a fun car though, no centre diff, you just banged it into 4x4 off road, you couldnt drive in four wheel drive on tarmac, it would just lock up.