Quad Pedal Car - 2025 late Xmas/early Birthday present ?

Blue for me on desktop and mobile (wifi or 5g).
I (and indeed anyone) can't interact with posts I can't understand because large pieces of it are missing.
 
That's the worst part - If they were really gone from postimage, NONE of us would see the, right?
The selective availability is really crazy.
 
Ok so the car on it's usual training/mum run has had a catastrophic failure [ definition by me ' unable to pedal it ' ]

Going up a hill about 1.5 miles from destination the pedals suddenly went floppy and were unable to move the chain for forward motion.

Looking at the BB I could see the left hand sealed bearing had come out of the BB shell and the pedal had dropped to one side ! SH*T :cry: :cry: 👎

So I grab the car as best I could and pulled it 1/4 mile to the top of the hill , hoping on a flat piece up there I had enough tools to fix it.

Nope these multi-tools I have carried for years and years and miles and miles are just rubbish , the M4 Allen key was to short to get the body off the spanners to puny to get the wheels off and there was no M8 Allen key to get the crank off nor a hammer to get the bearing back in.

Living in a hill area and having just climbed one the upside is quite often there is also a downhill.
I found with much clunking and graunching i could get it to move slowly on the flat and combined with free wheeling made another 1.5 miles before another 1/4 mile pull to reach her house. Sadly after dad's passing there are no useful tools left in the house except for a hammer which I dearly wanted to use ;)(y)

I called a friend who arrived with a unusual assortment of mismatched tools that turned out to be sufficient for the job.

Now the 6 bolts and the body comes off was a blatant lie and after much struggling in the blazing sun I sat inside the car and gave the front a might boot , it was then free , we got the crank off hammered the bearing back in and as a precaution took off the chain side as that one had also started to creep out.

Gingerly I set off home unsure if I was going to get a repeat performance , realising the engineer's place was on the way I stopped there for his verdict.....
Well when he had stopped laughing he told me a load of spacers were missing from the BB axle that should allow to 2 M8 bolts to squeeze it all together ? no idea never seen a splined BB axle in my life.
I may have found some in the box of spares that came with the car , I will show him tomorrow.

Worked on body when I got back now it comes off with just 3 bolts each side and I have some more of it's markings on.

Please no more drama's with the thing , time is slipping through my fingers with all the stuff I know I have to do without all this impromptu failures that all to me look like DNF if they happen on a race day.

Paul
 
Is the bb on the right way? It would want to undo if welded in the wrong way.

Sounds like an Octalink bb. The arms can go on 8 ways rather than the square taper 4 ways and the arms come off via the m8 screw acting on a stop that is often also the cover. The m8 still only hold the arms on though, they are screwed into the bb shell like any BSA.
 
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Is the bb on the right way? It would want to undo if welded in the wrong way.
yes and no !
Sounds like an Octalink bb. The arms can go on 8 ways rather than the square taper 4 ways and the arms come off via the m8 screw acting on a stop that is often also the cover. The m8 still only hold the arms on though, they are screwed into the bb shell like any BSA.
s-l1600.jpg

No it is one of these , called a BMX bottom bracket although it has other uses and they come in a variety of axle sizes.
So the bearings just press into a tube with a inner spacer then those washers take up the gap between the inner race and the rear of
the crank arm and the M8 bolts [ missing from this picture ] clamp the whole assembly together.

Yes new to me also and I have absolutely no parts except the car came with 1 more axle and one crank arm [ un-shortened ] in the spares box.
Although I think I have also identified a bag with the missing washers in , needs further investigation.

Paul
 
Yep mostly blue images for me, except 341,345,356,370. It seems our pictures go into a cache area on 'Postimage site' then get moved and purged, clue here.

"Due to the technical nature of our system, images get purged from CDN cache at most in about 30 minutes after being deleted (although usually it occurs much faster). If you still see your image after that, it has been probably cached by your browser. To reset the cache, please visit the image and press Ctrl+Shift+R."
That's to do with deleting images but it shows images get cached then I think moved(?) later or disappear.

It's ok if you repost images as soon as they disappear, they seem to stay put then.

The pedal car looked OK when I saw you on Friday. I was on my way to Darley Moor with 3 machines. Quest on top of the roof, Aerotrike and Carbon bike inside my car. Had good fun, but need to sort a very greasy chain and sprockets from chucking chain off idlers. It feels great in a velomobile so quiet and a smoooth ride while blowing 25mph+ wind outside, really cozy. Can't wait to race it.
 
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So, I had to look that up - It turns out there are 4 types of BMX bottom brackets !
Do you know which style you have?
Seems I have a bastard marriage of an axle from a sealed screw in cup bottom bracket and bearings same/similar to the BMX style with no idea what if anything is inside the tube acting as a BB shell.

So the best my engineer/bike builder and I could come up with was I made some washers to fit between the crank and the inner race of the bearings and see what happens.
BB-washers-DSCF9646.jpg

Now the rusty tubing is slightly to big a diameter , however if cut with the tube cutter shown it slightly compresses the tube and so then with some nifty file work it is a good as I can get it. I made 2 one is shown on the right resting on a cable tie.

So now I need to ride the bejeebers out of it to see if it can still find a way to fail ?

Paul
 
Ok so wanted to transport my pedal car on the roof of my current car , sadly the bonnet/windscreen/roof is to short and steep and the pulleys under the car want to dig into the windscreen and roof.
car-not-on-roof-DSCF9648.jpg

Not in the mood for ramp building and so it will have to go on top of the trailer [ again ! ] bummer.

Paul
 
More body work done , just the ' Z ' marking for Solo driver to add.
front-body-markings-DSCF9651.jpg


tried a new top on [ removable ] which was not clear as the original and came closer to me.
possible-top-DSCF9655.jpg

Crikey did I hate it ! can no longer see the pedals to clip in , can't see the wheel anymore without leaning out and only have a vague idea where the front is. Maybe using clear plastic as it first was is not a bad idea after all.

I was telling DannyC raising the floor at the front has led to the left shoe brushing the Corrox on EVERY pedal stroke , wow that noise could turn me into a Psycho killer in short order , so SWMBO caught me in the garage using a disc sander to trim the back of my shoes !
I think the phrase ' I hope they weren't expensive ' about covers it , of course it's racing we do whats needed ;) :)(y)

Paul
 
This has gone on for some time now, so I've forgotten -
You telling me ...
Have you considered the idea of shorter crank arms?
Maybe you have and dismissed it for various and numerous reasons ....... Probably.
They are already 145mm :D it's shorter feet I need.
Some of the 2 wheel stream-liners especially if they are only for short duration speed runs [ look up Battle Mountain ] buy shoes 1 or 2 sizes to small to reduce the space they need.
I know one of the UK guys had to cut off the toes of his shoes ;)

Paul
 
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