MegaSack DRAW - This year's winner is user - rgwb
We will be in touch
So the SS Pompetamine I built for my 12yo daughter is still very cool and lighter than a light thing (lighter than my other daughters Islabike Beinn 20).
The only tiny issue is the current 18t cog is good for riding around the flat back lanes at home it's a little tough for her when we go off-road and up some steeper hills. So could I fit a 19t cog alongside the 18 and simply swap cogs and use a Surly chain tug to adjust the chain tension?
I realise this would move the brake rotor out of the caliper a bit but I'm hoping it would still work.
Otherwise I suppose I could just fit whichever cog would be best suited for the days riding before we went out, or go for a Dingle setup.
Think that it would work but:
- your chainline would be a little off in one or maybe both of the gears depending how you set them up. I'm assuming you're using a geared hub with spacers.
- 18 to 19 isn't that much of a gap so there might not be much benefit.
An alternative would be to fit say 42T and 40T chainrings up front and 18T and 20T at the back. Also would allow you to change gear on the road
I may be typing out of turn here having never met your daughter, but aren't chaintugs slight overkill for a 12 year old?
Dingle-speed is the way forward.
Well I needed them on my bmx at around that age, or was your comment sexist?
I may be typing out of turn here having never met your daughter, but aren't chaintugs slight overkill for a 12 year old?
You may be right but I'm only using QR on the rear wheel and she has pulled the wheel forwards going uphill before now - she's almost as tall as Mrs SB 🙂
An alternative would be to fit say 42T and 40T chainrings up front and 18T and 20T at the back. Also would allow you to change gear on the road
yep, I think this might be the way forwards.
An alternative would be to fit say 42T and 40T chainrings up front and 18T and 20T at the back. Also would allow you to change gear on the road
This, I believe, is the answer.
You just need to work out the ratios that keep the same (or close-enough) chain length but give you a road and an off road gear.
Brompton Derailleur? Comes with its own chain tensioner. Needs two cogs on the back. Very light.
Sharkbait, didn't realise you were running a QR.
GW, I don't run them on my track bike which I sprint with on the track. Maybe you weren't strong enough to do them up when you rode BMX?
Have run mine as a dingle speed for some time in the way you've described. 16T for commuting and 20T for off-road hilly stuff with a 34T up front. I have small spacer in between the 2 cogs and the pulley wheel on the tensioner can be adjusted horizontally when I need to shift over to the other cog. Works just fine...
I used to swap mine between 42x16 and 38x18 on a flip-flop, without too much bother. Don't think I needed to touch the brake blocks, not sure.
i run my SS like this, no tensioner, just push the chain over to the other set of cogs. ignore the 11t cog, that is just for the lockring.
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You need, retro direct gearing...
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Is a Schlumph or Hammerschmidt at the front a little OTT?
I believe it's awesomist if we bring you into it GW 😉GW - Member
Well I needed them on my bmx at around that age, or was your comment sexist?
I ran a 15, 17,and 19 on the back with a 32 on the front for a while, there was enough movement in a slot dropout to take up each size.
Didnt really work out though, 19 too spinny for anything and I couldnt really get up anything in the 17 I could in the 15.
Find a gear she can ride 90% of the time and just relax when its too spinny.
double post
I suspect you're right Ian. Will put a 19 on and see how she goes before looking at dingle.