Below quick comparison of costs for LPG and Economy 7 Electricity. The comparison is based on a KW/h of energy from both sources. I have not factors in efficiency of end use.
Economy 7
We get our electricity from Ecotricity. Their economy 7 rate is 13.32p/KWh.
LPG
We get our LPG from FloGas. They charge 68.00p per litre.
1 litre of LPG weighs 0.51kg.
1kg of propane = 14.019 kWh
Price therefore approx 7.14p/KWh
Discussion
You could add 10% on to the cost of LPG, as even a very efficient boiler is not 100% efficient.
However, it is likely that any use of economy 7 energy will require some form of storage:
Thermal Store
Power Wall (Battery)
Storage Heater
These will "leak" heat in to the home / office when it is not needed (at night) and as such there are some losses to consider there.
So for heating Economy 7 will be more expensive than LPG.
For appliances with delayed timers such as dishwashers, or washing machines any loads you can delay so they fall within the off-peak period, will make a saving.
Hello happy humans. Despite already having way too many bicycle tyres I just bought some more. I think I may have a problem. Lots of photos here, and video below if you would rather:
In my quest for a high volume tyre with reasonable rolling resistance, and excellent puncture protection. I have gone for a pair of these Schwale Pick-Up Tyres in 26 x 2.35 size. 559-60 in euro sizing.
Th tread pattern is quite smooth centre knobs, with textured shoulder knobs. The knobs themselves are quite shallow so tyre hum is not overly evident when riding on roads.
I have owned around 10 sets of schwalbe tyre over the years and they have all had very good moulding quality, they have (with one exception) all run straight with no wobbles or such like.
These tire were measured quite thin compared to their advertised size. This is a bit annoying as I quite wanted them to be the size that is printed on the side of the tyre (60mm) but they are in fact 56mm, on 25mm rims. Had similar trouble with Super Moto-X tires.
Fine with mudguards shown here with SKS bluemels P65s.
I use these tyres for out and about country riding, on gravel tracks, roads, and light offroad. The main reason I went for these tyres is the "super defence" puncture guard. I am not a huge fan of "green guard" as it affects the feel of tire.
Schwalbe (c) Owned image of super defence. Which looks like a double thick carcass. This also gives the tyre a very very firm feel when riding. Not firm as in hard, but firm as in reassuring. I should imagine (i am guessing) the structure of this tire is more similar to automotive tyres.
More pictures of tread. The side knobs / texturing are quite good when riding in wheel ruts. The big apple tyre in particularly slips very easily when trying to get out of a wheel rut ion a track for example, as it has very little shoulder grip.
More pictures of tread. . . .
. . . and more.. . . .
The tire has various markings and the side, and a reflective sidewall. The tire indicates it is e-bike ready.
The tyre is made from Addix-E compound: "The newly created Addix E-Compound is specially optimized for maximum durability, low rolling resistance and exceptional grip even at high speed." This tyre shown is 2.35" version but you can get 2.15" in most versions.
The tyre will go up to 4.5bar which is quite high for a wide tyre.
Errrrr . . . I like the colour of the writing. . .
So hopefully many many more hassle free rides to come. With hopefully not many puncture. Or I will be going back to big apples. In summary these are a really nice tyre, but better if they had been measured properly.
Update 09/12/2021: I have ridden this now for about 200 miles. It is not as light to pedal as the biggle apple, but is is better than I expected. It certainly rolls better than the super-moto-x. However, I have found that I cannot inflate to full pressure and still enjoy the ride. 4.5 bar on a tire of this width is crazy hard. It makes ride too uncomfortable.
Update 20/01/2023
Below are some pictures of the Schwalbe Pick Up Tire Mounted on a cargo bike, I hired in the Netherlands. I suppose this is what they were built for. We did about 100 miles in 3 or 4 days. I think I would have pumped them up a bit harder, but I had no pump (ergo pressure gauge) to check what pressure they were running at.
The front tire os 20" size. I don't really have much to say about that. I couldn't see it from where I was sitting.
As you can see I was carrying all of the families luggage, and for some stretch, my son sat on the rear rack and we put his small bike on the front. So we really loaded these tires up and they were very well behaved.
