CJSM2

[NackerNed]

Anybody can help change the program in my CJSM2? Just had it fitted to my chair and the fastest profile is 3.8mph which is dangerously slow when trying to cross busy roads. I have the high torque motors on my Quickie Q500R and will pull a train but surely I can squeeze a little bit more top end out of it? I realise a dongle is required but seem quite difficult/expensive to get a hold of. Anybody in the Southport/Liverpool area that can help out please?

[Burgerman]

Programming is held in the power module. Not joystick. But yes you need a dongle.
Depending which motors you have it may already be set to 100% forwrd speed. It depends what motors were ordered with the chair. If it is possible to speed it up then it may or may not be easy.
There are a bunch of different 2 and 4 pole 6kph motors used on sunrise chairs.

Depends on how it was "turned down". If it was. In some cases its done by the NHS or rather the supplier of the chair when ordered. This will need some walls changing and need OEM level programming tools.

Quite apart from speed in order to make the thing able to hit the side of a barn you will want to reprogram its turning parameters anyway.

[NackerNed]

It is NHS so I'm guessing tuned down. However it handles fine for me just need to check that Max speed parameter if anybody can help?

[Burgerman]

NHS supply 4mph/6kph chairs. Its probably not possible to speed it up. Also I am very surprised that you could possibly be happy with the way it steers as stock!

[Burgerman]

These are the motors you can get on that chair. NHS generally order the 6kph 2 pole. Thats 3.75mph... Thats what you are seeing?

IF you have the Heavy Duty 4 pole motors, they are 8kph, which is 4.9mph. But when these are supplied which is very unusual unless you are bariatric, they are reprogrammed down to 4mph when supplied to the NHS without lights. In this case you can gain a small abount to 4.9mph if you find somone with the knowledge and the OEM programmer needed.

[NackerNed]

They are bariatric and 4 pole. How can I check to see if it is maxed out as even to get to 5mph would make a huge difference?

[Burgerman]

Plug in programmer. Check to see that it isnt voltage limited or speed limited, etc in about 4 places. Or send me a copy of the settings file and I will have a look. Again needs a dongle.

[NackerNed]

Thank you. Where is best to obtain said dongle?

[daveonwheels]

You mostly cant get them

[Burgerman]

Any wheelchair dealer will sell you one. For e.g any sunrise dealer online or high street will sell you a dealer version and I can give you a part number and a price. Around £280 uk from memory. That can work as an OEM one with a small workaround.

Highlighted below with part number.

[NackerNed]

Anyone able to help, even just as a loan?

[Burgerman]

I have OEM but am a million miles away from you or I would. And its not easy to replace as OEM version if lost in mail. So wont do that. But there are people much closer.

[NackerNed]

Thanks, hopefully somebody will turn up to help. I managed a 7 mile trip out today but crossing roads is genuinely terrifying. Unless there is a dedicated crossing, 3.8mph is suicidal

[Burgerman]

Do you think 4.9mph if its actually possible will make much difference?
One option is to find a faster ebay chair. NHS say 4mph is all they will provide for indoor use.

[NackerNed]

Not a huge difference no but as is at 3.8 is equivalent to a fast walking pace. I couldn't lose a couple walking whilst out on a long road the other day which seemed comical at the time so maybe that little boost will help

I've always had a manual chair with power attachment (Triride/Batec/TH); and they can travel up to 30mph but are obviously no good for practical reasons. Hence the 3.8 limit is soul destroying.

Sadly I'm now no longer in the financial position to purchase another chair after being scammed last time.

[NackerNed]

These are my motors if anyone knows the max speed of them.

[Burgerman]

Those are 8kph maximum. They are deprogrammed down to 4mph when ordered by WCS or when sold with chairs that dont have lights. They are 4 pole, but with lower gearing used where weight is a concern. So 4.9mph.

120 rpm
14 inch wheel.
14 x 3.142 = 43.9 inches diameter.
43.9 div by 36 = yards per revolution. So 1.22 yards.

1.2x 120 rpm = 144 yards per min. Which is 8640 yards per hour.
8640 div by 1760 yards per mile = 4.909 mph.

But thats unloaded. It will never actually reach that while pushing a chair along. So maybe 4.5mph?
And thats at 24V nominal. Your chair will be et to deliver 21.6 probably to allow some headroom for steering and to keep speed cponstant as attery voltage drops in use. Thats the figure most sunrise chairs are set to. So youmight not actually get 4.5mph either.

[NackerNed]

New motors then

[Burgerman]

The 10kph 4 pole ones ones are the best especially if you are heavy. They are 6.2mph. The 13kph ones are weak, have very noticibly less torque even with the 120A controller. Been there, got the T shirt. They eat batteries too, and the extra current causes rollback of power when its warm.

The NHS will only supply 4mph. They supply chairs for indoor use. If you want faster then thats not the route to use.

[NackerNed]

Well I'm 150kg so using the right motors. I'd still like to squeeze that last bit of top end out tho, however little.
Finding anybody with the facilities is proving very difficult, especially in the North West

[Burgerman]

Go to a few local dealers. See if any offer servicing etc. 1 mph is not much but its better than not having it...


Call sunrise, ask them which dealer nearest to you can do it. Literally a 5 minute job. Takes longer to start the laptop up. Changed half a dozen parameters on my daily chair today.

[NackerNed]

Thanks, been trying all day but no luck.

[ex-Gooserider]

Not a huge difference no but as is at 3.8 is equivalent to a fast walking pace. I couldn't lose a couple walking whilst out on a long road the other day which seemed comical at the time so maybe that little boost will help

I've always had a manual chair with power attachment (Triride/Batec/TH); and they can travel up to 30mph but are obviously no good for practical reasons. Hence the 3.8 limit is soul destroying.

Sadly I'm now no longer in the financial position to purchase another chair after being scammed last time.

Actually it's more of a slow jog speed, or VERY fast walking... Normal walking speed is about 3mph - walking distances are figured at 20 minutes / mile, which translates to 3mph x 20min / mile = 60 minutes...

Many years ago an acquaintance and I had to cover a mile or so to get to an event we were running late for... He was maintaining the fastest pace he comfortably could, and I was still having to slow down a little from the maximum my 4mph chair's max speed...

ex-Gooserider

[NackerNed]

Makes sense. One of my other downfalls is my weak bladder and can suddenly need to go very quickly. The faster chair would help here also

[Burgerman]

The NHS only supply indoor chairs. To suite clinical requirements. Being disabled isnt cheap. I suggest buying something else for outdoor use. Yes thats expensive. But it is what it is. Thats what most people do if they want good outdoor mobility. There isnt a lot of choice. Its the NHS indoor chair or a self funded outdoor chair. Or a compromise where you pay the extra for a chair that does both.

[NackerNed]

Thanks for the advice.

[Burgerman]

Not sure if you claim it but this is what the "mobility component" is supposed to be for. Its currently 71 a week. Or £284 a month. You can use it for getting around. That means taxis, private hire, buying a scooter/powerchair or towards a car. You decide. Beer if you want.

[NackerNed]

Yes, that pays for my WAV.

[Burgerman]

Well I bought mine outright after saving my mobility allowance for half price van in 2006. Its still as good as new almost. 17 or 18 years later. To get it at half price I bought in canada when there was a good exchange rate. And its left hand drive. With a set of wheels, and better spec than the UK version. And I have been saving and spending that 280 quid a month mobility allowance on ever since. It amounts to 58k over the life of 1 van saved. Its free money I wouldnt have had if I had used motability...

And that doesent even include the additional 20 to 40k deposit needed to get a "drive from wheelchair" side entry vehicle too. I would have had to add this every 3 or 5 years on top! 17 years of that also adds up to as much again.

I decided 2 vans ago, and 26 years back, that leasing a mobility vehicles made no sense for me as the numbers were astronomical in comparison to buying and iporting from US and canada and looking after for yourself. Literally 100k plus difference over the life of a couple of vans. Which pays for a few wheelchairs and ...

3 years ago I posted pics, I had a cheap carpet fitted on top of the factory one to protect the still virginal original one. Looks the same today. https://www.wheelchairdriver.com/board/ ... 35#p118437
There are ways... Yes its not easy. But I am in this for the long term and so plan long term too. Its not easy to do this on gov handouts but it can be done if you plan things well and think about costs long term. Doesent help you right now though. It might in the future.

[NackerNed]

Good advice and when you work it out like that it makes a lot of sense.
As it happens, this will be my first WAV via Motability and I was supposed to take delivery next week but they won't let me have it until I've had driving lessons with the AA. Apparently to familiarise myself with hand controls

Back to the original topic. If anyone with the programming facilities is willing to help, I will be able to travel hopefully next week. Ideally somebody close to West Lancs/Merseyside.
Even if just to put this to bed and I will know either way my next plan of action.
I was actually bricking it crossing roads today and it's putting me off using the chair at all