Cycling UK Forum

Anyone have experience/ recommendations with tyre seating tools
I have a hybrid bike, a Brompton and a road tourer and I really struggle with tyres.

Jdsk wrote: ↑16 May 2021, 4:03pm

ClappedOut wrote: ↑16 May 2021, 3:54pmWhen did petrol motor assistance get outlawed?

In the UK? AIUI never. The category with the lowest permitted power and speed is the moped. But the requirement for pedals was removed in 1977.

https://www.gov.uk/ride-motorcycle-mope ... quirements\

Jonathan

In the immediate post war years there was a motor that sat on the rack above the rear wheel and drove through a friction wheel.
There was also the BSA Winged Wheel https://cyclemaster.wordpress.com/page- ... ourt-show/
Would these now be considered to be mopeds?

zenitb wrote: ↑27 Apr 2021, 6:56pm

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Thanks for that. The bike does predate 2008.
Your suggestion seems a good start. Even if it doesn't work I will be less that twenty quid out of pocket.
I found this on ebay https://tinyurl.com/cdr5xhya

horizon wrote: ↑27 Apr 2021, 11:52am I manage without one. What were the chainring sizes supplied with the Subway?

The arrogance of that first sentence doesn't deserve an answer.
To the second 42, 32

zenitb wrote: ↑26 Apr 2021, 1:29am Its crucial to find out which of these two it is ... DCB I dont want to teach granny to suck eggs here ? are you sure the bike has a 7 speed CASSETTE at the moment ? Or is it a traditional 7 speed screw on FREEWHEEL block ?

When i rotate the bock the inner splines rotate with the cogs which I think means that it is a cassette???

And is it possible to mix sprockets from two (or more) blocks to get the gears you want. or is it a case of "one cassette indivisible?

iandusud wrote: ↑26 Apr 2021, 1:45pm Funnily enough I dragged my mountain bike out this winter for the commute when the snow came only to discover that my son who had been using it had broken the front shifter. So I just put it on the middle ring and ran it with its 11-34 cassette. TBH the gearing is perfect for commuting. An 80" gear is perfectly high enough and a low gear in the 20s low enough even for the short stretch of 20% I have to tackle each day. So with electric assist no need for anything else IMO.

A man who understands me! Even with non assisted road bike I find that once you get below 1:1 you might as well getf of and walk. It might be a tad slower but, as my old mentor back in the sixties used to say, "A change is as good as a rest". And with walk assist on an electric you don't even have to push the bike, just hold it upright and walk alongside it.
And a top in the low eighties tops out at over twenty mph so sit back and enjoy the ride. 3:1 range is plenty.

horizon wrote: ↑26 Apr 2021, 11:06am This is above my pay grade but just giving it a quick thought, I'm not sure that even an 8 speed 11 - 34 will give the OP the gears he wants

Do keep up. In my OP I stated that in an ideal world I would put on a seven cog 11 - 34.

horizon wrote: ↑26 Apr 2021, 10:57am Without knowing the full details and being an aficionado of triples and low gears, my own guess is that putting on a triple and matching it to a Megarange (34T) might even have obviated the need for a motor!

I doubt that putting on a triple front ring would provide the extra 250 watts of input that a motor provides.

Then last year, for simplicity, I took the front changer off and replace the crank with a single 36 which I got from Evans for a fiver.

My second thought was why do this when you could get a front chainring down to 22 and really notice the difference? I would have thought even a single chain ring would be available smaller than 36T

I would concentrate on the front end, but that is just my layman's take on it.
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I am a glutton for simplicity. Multiple front rings are a pain: trying to remember where the next gear is; up at the front down three at the back; or is down at the front and up four does my head in.. And a single 22 would give a ridiculously low top gear.

You don't need close ratios on an electric but I would like a range of rather more than 3:1. If I could lay hands on an 11-34 seven speeds I would be delighted.

Hi. New on here but I have been cycling since before I was born in 1948
And a member of CTC for nearly forty years.

About ten years ago I bought a Carrera Subway trail bike from Halfords. 2 x 7 gears more than adequate.
Two or three years ago I electrified it with a conversion kit - front wheel motor and the rest of the gubbins.
Then last year, for simplicity, I took the front changer off and replace the crank with a single 36 which I got from Evans for a fiver.
It is a nice setup: one hand for the electrics and one hand for the gears.
But the range is a bit narrow: 12 - 32 7 cog cassette. In an ideal world I would just change the cassette for a 7 cog 11 - 34 but they don't seem to be made anymore. So I have to go up to 8 or 9 cogs and my bike shop tells me that my wheel won't take more than seven.

So is this right? I need a new rear wheel with a nine speed cassette and a new shifter to replace the grip shift. Will I need to replace the SRAM-sx4 mech?