Good point Gerrit - I live on a steep-enough hill (steep enough to give me pause to consider your comment seriously.) My kangaroo-like thighs and 21 gears can manage the up just fine, but going down might be plenty exciting!
Trouble with a bike is unlike a car, tractor or truck you cant leave it in a low gear and use the engine as a brake.
All your braking effort on the bike has to come from those little rubber pads on the rim.
Consider heat generation and the rubber failure to grip as it gets hot and your last bit down the hill could see you wear the iron bathtub around your legs.
Hopefully any hills you come down dont have a sharp corner at the bottom. Be interesting, for with your coupling so high up on the bike frame I suggest the swing forces at the speed you will be travelling at will tip your bike up and over quite easily.
Jeeze Gerrit - now I'm beginning to lose my nerve! I might just call in a carrying firm to take the old barrow down to the town and stay home wrapping myself in cotton wool! Better still, I'll jump on and see what happens. I will report back.
Thanks Suz - it's been a great day so far. I'm just about to head off down hill. The trailer has self-applying brakes that have managed a 200 kg weight before today on the hills of Dunedin. To date I've only ridden the bike-trailer unit around the flat streets of Invercargill advertising a local body candidate. Today's down hill dash will be a test for me. I was tempted to lash it to the unicycle and go dam-busters, but the tiny sensible region in my brain kicked in in time!
I'm back (safely!). Piece of cake (crumbs!). The hill and the right-angle turn at the bottom were as nothing. Campervans tooted their support as I rode the main road into the village and as I neared my delivery-destination, some pedestrians applauded! Coming home was no sweat and though the final climb did burn my thighs a little more than usual but I cruised in. I could go twice the weight I'm sure. I'm loading up the unicycle now to head down to the rugby field for some practice. Eventually I'll put the two together :-)
Gerrit - one of my sons has the mind of an engineer and is presently signing-on for a course at Dunedin, talking about building human-powered refrigeration machines, hydrolic this and that, levers and jacks that could tip over a shipping container - that sort of thing. You and he think similarily (on those topics) I think. He's just finished his can-opener-inspired direct seeding machine. It works a treat - he could do a rugby field in an evening, he says.
15 comments:
Could you haul one of these?
http://shundamumble.blogspot.com/2011/01/mega-fauna.html
Good to see the brakes on the trailer wheels. Wonder how you were going to stop one of these on a down hill stretch but that answers the question.
Mind you getting up a hill to go down the other side might be the bigger problem.
How many gears?
Good point Gerrit - I live on a steep-enough hill (steep enough to give me pause to consider your comment seriously.) My kangaroo-like thighs and 21 gears can manage the up just fine, but going down might be plenty exciting!
Shunda - I'd love one of those!
I can see though, why your wife might baulk at collecting an armload of wood for the fire.
Better to burn coal :-)
What about a birthday cake?
Trouble with a bike is unlike a car, tractor or truck you cant leave it in a low gear and use the engine as a brake.
All your braking effort on the bike has to come from those little rubber pads on the rim.
Consider heat generation and the rubber failure to grip as it gets hot and your last bit down the hill could see you wear the iron bathtub around your legs.
Hopefully any hills you come down dont have a sharp corner at the bottom. Be interesting, for with your coupling so high up on the bike frame I suggest the swing forces at the speed you will be travelling at will tip your bike up and over quite easily.
Wider axlewidth on the trailer would help.
Jeeze Gerrit - now I'm beginning to lose my nerve!
I might just call in a carrying firm to take the old barrow down to the town and stay home wrapping myself in cotton wool!
Better still, I'll jump on and see what happens. I will report back.
Birthday wishes Mr G...hope it's not your last given the perilous journey you have planned.
Thanks Suz - it's been a great day so far. I'm just about to head off down hill. The trailer has self-applying brakes that have managed a 200 kg weight before today on the hills of Dunedin. To date I've only ridden the bike-trailer unit around the flat streets of Invercargill advertising a local body candidate. Today's down hill dash will be a test for me. I was tempted to lash it to the unicycle and go dam-busters, but the tiny sensible region in my brain kicked in in time!
Robert,
Just making comments from an engineeribng perspective, you make the decisions to ride or not.
Maybe you could fit Honda 50 wheels onto the trailer and use their hub mounted brakes.
Just to throw a figurative spoke into the physical spoke wheels.
Can the trailer wheel spokes handle the weight of the load plus the braking effort?
And if the trailer breaks free how save is your posterior from having the trailer towing arm penetrate where it might hurt a great deal?
Hehe, are you going to have video taken as you get to the bottom of the hill?
Could be an entrant in "destroyed in seconds" TV show (hopefully not).
Please strap a camera on your helmet so we can see facial expressions! hehe.
I'm back (safely!).
Piece of cake (crumbs!). The hill and the right-angle turn at the bottom were as nothing. Campervans tooted their support as I rode the main road into the village and as I neared my delivery-destination, some pedestrians applauded!
Coming home was no sweat and though the final climb did burn my thighs a little more than usual but I cruised in.
I could go twice the weight I'm sure. I'm loading up the unicycle now to head down to the rugby field for some practice. Eventually I'll put the two together :-)
Gerrit - one of my sons has the mind of an engineer and is presently signing-on for a course at Dunedin, talking about building human-powered refrigeration machines, hydrolic this and that, levers and jacks that could tip over a shipping container - that sort of thing. You and he think similarily (on those topics) I think. He's just finished his can-opener-inspired direct seeding machine. It works a treat - he could do a rugby field in an evening, he says.
If only I had read your blog sooner. I just signed up with "4 pups and a worm".
They are very good.
They tie. They fly. They tow. They even mow.
I can't compete with that!
Tonight, I loaded up 5 bikes and got no where. The front wheels were touching the ground.
This crew puts us to shame!
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