Cycling UK Forum

Something else that has come to mine is i'll need a new stem to ride change my position. I can't signal with my left has anyone seen or used electronic signals, are they legal?

Jdsk wrote: ↑1 Dec 2023, 2:43pm

Revv wrote: ↑1 Dec 2023, 2:36pm

Jdsk wrote: ↑1 Dec 2023, 2:15pm
On our Dawes tandems a single lever with two cables activates both rim brakes.

You can achieve the same with a single cable from the lever to a widget that pulls two cables, eg:
https://www.sjscycles.co.uk/cables/prob ... oubler-12/

Of course a tandem differs from a solo in wheel loading under braking.

Can this be adjust to give bias to back?

First thought... the available relevant adjustments would be the design of the doubler and then cable lengths, mechanical advantage of the brakes and block material.

Jonathan

ok, if i understand correctly, the cable length would be what engages the back before the front?

Paulatic wrote: ↑1 Dec 2023, 2:33pm I had a coaster brake with a SRAM 7 speed hub. It stopped me well and I did enjoy it. Only thing to remember was stopping at traffic lights with the pedal in the right position. You can’t back pedal.

ok, this could complicate things but i could get used to it, does it lock the wheel imediately or gradually slow you down and the further back you pedal it eventually locks, if that makes sense? thanks for the info

Jdsk wrote: ↑1 Dec 2023, 2:21pm

Revv wrote: ↑1 Dec 2023, 2:19pm

Norman H wrote: ↑30 Nov 2023, 12:19pm
Presumably you'll be unclipping your good leg when coming to a halt but you may encounter problems on the rare occasions that the bike decides to topple the other way.

Will you be able as easily to unclip your weaker leg?

I have to kind of shift my body and hip to unclip, it's not easy and i will need to practice, the other option is use spiked pedals with a toe clip/cage. I've ridden a friends hybrid with toe clips, obviously not as secure but i think can work with its limits.

You could also use a toe shovel. That gives a fair bit of location with no special movement needed to release. For example:
https://www.sjscycles.co.uk/toe-clips-s ... toe-clips/

Jonathan

I like the simplicity of this, i'm thinking something i could tighten down a bit to prevent unwanted release on the back stroke

Jdsk wrote: ↑1 Dec 2023, 2:15pm

Revv wrote: ↑1 Dec 2023, 2:10pm...
i'm visiting a few bike shops next week to see if it's possible to have one brake lever for both that locks rear wheel first.
...

On our Dawes tandems a single lever with two cables activates both rim brakes.

You can achieve the same with a single cable from the lever to a widget that pulls two cables, eg:
https://www.sjscycles.co.uk/cables/prob ... oubler-12/

Of course a tandem differs from a solo in wheel loading under braking.

Jonathan

Can this be adjust to give bias to back?

Brucey wrote: ↑30 Nov 2023, 12:00pm one thing that hasn't been mentioned is the possible use of a coaster brake; such conversions [eg to a Nexus 8 hub] are not cheap [or easy come to that] but they do make it a bit more straightforward to put a safe/legal bike together.

Psamathe wrote: ↑30 Nov 2023, 1:41pm I've no experience of the customisations the OP is seeking but re brakes: I seem to remember some Dutcvh bikes have rear brake where you pedal backwards (or rather pressure pedals in reverse) to apply rear brake. Do such things still exist? are they practical? any possibility for OP?

Ian

Interesting, had no idea something like this existed. Going to look into this and see if i can try a bike with it fitted, will need to create new muscle memory to adapt but i probably have to do that anyway. Cheers

Norman H wrote: ↑30 Nov 2023, 12:19pm

Revv wrote: ↑29 Nov 2023, 3:47pm .... i'll use clip ins with MTB shoes to keep my foot in place.

Presumably you'll be unclipping your good leg when coming to a halt but you may encounter problems on the rare occasions that the bike decides to topple the other way.

Will you be able as easily to unclip your weaker leg?

I have to kind of shift my body and hip to unclip, it's not easy and i will need to practice, the other option is use spiked pedals with a toe clip/cage. I've ridden a friends hybrid with toe clips, obviously not as secure but i think can work with its limits.

rareposter wrote: ↑30 Nov 2023, 8:48am I was trying to find (unsuccessfully...) a pic I know I have somewhere of a mountain biker I saw at a cafe stop once who had a prosthetic left arm. He had a socket on the left bar that a ball joint on his limb popped into (it would release in an accident) and his right hand grip had two individual brake levers, set at a slight angle and one slightly inboard of the other. It meant he could use the inner/upper brake lever with his first finger and the lower/outer lever with his middle and ring finger. If I can't find the image I'll try and recreate the layout using some spare parts.

Gear shifting was a trigger shifter under the bar and he was running a 1x - something that might be worth considering if you're not going to be going super fast or doing big climbs is to swap out the current double Tiagra chainset (which from the link you posted has 34/46 chainrings) and replace it with a 1x at maybe 38 or 40T. No front shifter required and you can still get a range of gears to cover most riding.

Ah ok thats a good idea, i've seen there is a flat bar tiagra shifter that'll likely fit under bar so that should work and it's pretty cheap. i'm going to look into changing the front chainset as eliminating a front shifter would save me space for the brakes. I'm waiting for a reply from microshift to see if one of the front thumb shift will work with my chainset too. Di2 would be awesome but out of the question, i'm visiting a few bike shops next week to see if it's possible to have one brake lever for both that locks rear wheel first. The Hope Tech duo which was mentioned earlier just seems like an all in one package with minimal fuss, expensive but i have some time to put more funds aside for the project as it's too cold to ride at the moment and i'm in the process of designing the left bracket to hold my hand.

The idea i have is to use a system with similar function to a cleat but the release to be controlled by my right hand using a wire/pin, inspried by Tom Wheelers system. I looked into both the Paralymipians you mentioned but could find details of their bike set ups, you have any links?
I've also reached out to some charities so hopefully i'll be 3d printing some mock ups soon. If you're able to find the pic that would be awesome but i appreciate all the info non the less.

Tigerbiten wrote: ↑29 Nov 2023, 10:57pm I've only one hand since my accident with a Tiger so I've also looked in to one hand braking.
The main downside I found with 1 lever/2 cables setup is there is no variation in braking front to back.
So what works great in a straight line on a dry road is the opposite of what you need going around a corner in the wet.
I'm sure I could have worked something out on a bike but that was one of the main reasons I ended up on a recumbent trike.
A lot less of a risk of coming off when slowing down from a silly high speed run in all conditions.

It's taken some work/time to arrange the 4 controls needed in to the most ergonomic layout for me.
So you probably won't get it perfect first time, but as long as you're close you can work on it.

Luck ........

Yikes a Tiger?!

I've seen a video on yt recently where a guy that lost his arm had a road bike with one shifter for both which locks up the back before the front, i'm planning to visit a few bike shops in the coming weeks to see if something like this is possible

One of the first things i did after my stroke was look at recumbant bikes and it's still an option but i want to see how it goes with what i've got with minimal investment for the moment. i used to ride a motorcycle and i would love to get back into that too, obviously that comes with many more challenges but my logic is get back on two wheels, work on balance, arm mobility, adaptations, fitness and most of all get out there. I can feel that this process is going to take a some patience and persistence but i'm feeling pretty inspired to overcome the challenge.

Brucey wrote: ↑29 Nov 2023, 6:06pm FWIW microshift do various thumbshfters. In most cases a LH thumbshifter can be mounted on the RH bar inverted, where you may actually find it better than normal to use. [a long time ago my MTB used to run inverted thumbshifters on both sides] Anyway I think you might be OK with a pair of standard thumbshifters on the RH bar, but with one inverted.

This looks a great option, their site says they make a set for Shimano Tiagra 4700 and i have 4600 i think, i've sent them an email to see if its compatible, i've read there was some changes with the 4700 but i'm hopeful

While searching i came accross a few threads stating the Sram 11 speed shifters work with shimano 10 speed cassette as the shifting ratios both linear and so close that these just work together, have you heard of this before?

Thanks

Tigerbiten wrote: ↑29 Nov 2023, 5:43pm Flat bars will help a lot with regards to brake levers.
With brakes it's all depends on how road legal you want to be.
There are loads on single lever/dual cable options, but they are not road legal so don't crash.
I use a set of Tektro Auriga Twin, single lever to twin hydraulic disks, on the front wheels of my bent trike. I only use my back brake as a drag/parking brake and it's worked off a friction lever. But as it's independent of the front brakes, I'm road legal.
If you want to be road legal on a bike then there's the Hope Tech 3 Duo, twin levers to twin hydraulic disks. But it's expensive.

As for the hand, there's always Velcro. Sew a piece to the palm of a glove and stick the other half to the handle bar. You may have to experiment as to the amount and how well it lasts.

Luck .....

I think considering the circumstances i'd like to be legal. The hope system looks perfect but yes pretty expensive, you think it would be possible to use the levers only with my current friction calipers and disc?

I've seen some others use velcro for the hand but I have spasticity in my left hand which makes it close, so gripping is not an issue it's letting go, i have to use my right hand to lift its fingers off. If i come off the bike it's likely my left hand will still be connected. You have given me an idea though. I might 3d print a larger grip so my fingers don't go all the way round to full grip, use velcro on that so my hand stays on and I still have pulling power.

Cheers

Paulatic wrote: ↑29 Nov 2023, 4:57pm These might help you with your braking options viewtopic.php?t=148000

A lot of info to work with there, thanks!

Hi all,

Joined today with the challenge of finding a way back on my bike. I hope i'm posting this in the right place as i couldn't find an accesibility section. Please move it if required.

Suffered a stroke in 2015 leaving me with reduced use of my left hand and leg but i can still use my arm to control the bars and i'll use clip ins with MTB shoes to keep my foot in place. Since 2015 my bike has been on a dyno, i'm starting to find it boring and i'd like to get out and about. I'm a casual rider and happy with current bike which is a Norco threshold A2 which i got via the cycle scheme at work prior to my stroke, i used it to ride road and gravel. I'm not really clued up on bike parts so i'd like to pick your brains..

1) Its currently got drop bars and i'd like to swap them to flat bars for a slightly more upright position, choosing a bar doesn't seem to difficult however i'll need new shifters and brakes. I'm leaning towards a twist/grip shifter for the rear gears and a thumb shifter for the front, both to be placed on the right. It's got a 10 speed rear and i've found a Sram XX Grip Shift, Twist Shifter 10SP nos on ebay but i'm not sure if it'll be compatible. Ideally i'd like to keep the crankset and cassette the same however i'm open to changing them if required

Any recommendations for a thumb shifter for my current crankset?

After a bit of googling another option is to change the cassette to something like the SRAM NX 11 Speed X-Actuatuion Grip Shift with the Sram 1130 NX 11 Speed Cassette 11-42 or something similar. Would i need to change the derailiers and crankset if i do this, this seems it could be little pricey?

This is what i've found from a bit of googling but open to any other suggestions.

2) Brakes, i need them both to be on the right any recommendations for this, i did some googling but i must be searching for the wrong thing as i didnt find anything but i have seen it done?

3) Althought i can grip with my left i cannot let go on demand which is a little dangerous if i come off. I'm thinking to design a quick release mechanism like Tom Wheeler(MTB rider who lost the use of his right). I tried contacting him but was unsuccessful, if anyone knows of any solutions please let me know.

Another thing i'm considering is a steering damper

This is the bike i have: https://www.norco.com/bike-archives/2015/threshold-a2/

Cheers!