Storm 4 Xplore retrofit

[Burgerman]

The WHEEL (the rim) is 6 inch.

The stock tyre is 3.00 x 6 so is 12 inches diameter.

The low profile tyre is 9 inch diameter so loweres the chair at the front by 1.5 inches. And allows the centre footrest to move back around another inch and a half. Which was why I wanted to do it.

[shirley_hkg]

Good deal with rover220.

Its my turn to retrofit now.

[Burgerman]

You will need to find a way to make it work first. I couldnt!

[stevelawiw]

Are you going to take the motors apart? I'd love to see inside one

[shirley_hkg]

Shirley, for yu to study. Notice the battery options, and other options here. But the MOTOR RPM and temperature, no of poles is greyed out. !

Is it non-user-adjustable ?

Highest speed when Chair Speed is @ 10 , and Forward Speed @ 100% ?

Are you going to take the motors apart? I'd love to see inside one

Steve, did you gain any speed using the Wizard ?

[Burgerman]

Yes. It wont go more than 8mph.

But to get enough turn acceleration and enough turn deceleration you need to increase the TURN ACCEL SCALER setting. Or it steers like a pig on stilts.

[stevelawiw]

Steve, did you gain any speed using the Wizard ?

Yes, a little, you very soon get into the trade off between top speed and not being able to turn My top speed I think from memory is 9mph with 95% for speed and 5% to turn, but it turns like an oil tanker.

But bear in mind your chair is next gen to mine. I've never had a play with those motors, or the controller, it's all new to me, hence my interest in whats inside!

I have Sin/Cos drive working on the bench with my motors and Robotec HBL2360A currently up to 12mph and more importantly smooth from 0mph. But this is only on the bench.
I need to get it in a chair and that's some time off, I'm bogged down with Arduino problems at the mo

Edit: I should have said the 12mph is at 48v

[shirley_hkg]

That means I won't achieve 220 rpm in real world straight. Right ?

3.50-8 wheels @220 rpm means 9.8 mph already .

[shirley_hkg]

I have Sin/Cos drive working on the bench with my motors and Robotec HBL2360A currently up to 12mph and more importantly smooth from 0mph. But this is only on the bench.
Edit: I should have said the 12mph is at 48v

You succeeded in feeding GB's sinusoidal wave signals to Roboteq new controller ?

Congratulation .

[Burgerman]

The only way to get 9.8mph would be to have no steering headroom. Since at 25V thats the speed a wheel/ motor rotates. So every time you steer or correct it slows. And only one wheel. So steering becomes vague and weak.

[stevelawiw]

You succeeded in feeding GB's sinusoidal wave signals to Roboteq new controller ?

Congratulation .

Thanks!

[shirley_hkg]

Trying to relocate a retractable joystick to the right, I found this mounting pole is not left/right interchangeable .

Am I missing something ?

[Burgerman]

No its a stupid setup. You need a welder.

[foghornleghorn]

I have joined the Storm 4 X-plore club. Saw one advertised that was too cheap to ignore.

2015. Brushless. Electric lift, tilt, recline. Turned out to have been hardly used as previous owner lost confidence with health deterioration.

For me it will just be an outdoor chair for distance. Battery compartment looks cramped compared to my current chair so may need to find some new cells rather than just swap the lithium over.

Made some changes to the seating / arms / replaced stupid headrest mounting so far, still need to do something instead of sticky-out footrests.

Woody kindly provided me with a lead to program it. Need to make some adjustments to get it driving right.

Done 21 miles testing the range on its no-name batteries. Speed seems to be 6mph judging by how long it took. Is there something really obvious I am overlooking in the wizard that is reducing the top speed?

[stevelawiw]

Is that your first brushless chair, How are you liking it?
Using it for outdoor use only you will get better economy, indoor stop/start eats up batteries with GB motors.
You should be able to get 8mph out of it, can you post the Wizard output so we cam have a look?

Edit: What size batteries are you looking for I can recommend a suppliers for 80ah cells that are 170x130x36

[foghornleghorn]

wpr renamed as zip

storm4ascollected.zip

(51.79 KiB) Downloaded 154 times

It's quiet is the main thing I have instantly noticed. Not sure it enjoys going uphill but my idea of uphill / downhill is usually steeper than most people will attempt

That cell size sounds like what I already have - need to look for the data sheet and check.

[shirley_hkg]

Stock tyres are undersized .

[foghornleghorn]

I was expecting 7.5mph due to the tyres being the same as my 4.5mph / 130rpm motor chair. 6mph seems lacking.

Fitting bigger tyres is going to raise the COG and make it unstable on the sorts of roads I will be on.

Have you been using your new chair yet Shirley?

[shirley_hkg]

Mine is pneumatic 14" knoby stock tyres. It doesn't seem only 6mph .

Have caster shake that day , and felt like 7.5mph .

Front tyres arrived.

[foghornleghorn]

We solved the caster shake on mine by tightening the bolts under the black covers.

I agree mine felt fast but actual time to do a mile is longer than expected.

[Burgerman]

Suggestion. Set TURN ACCELERATION to 70. Set TURN DECELERATION to 100. And then set lower down in page, TURN ACCELERATION SCALING to 35.

Turn DAMPING to 20 or whatever feels more accurate.
That sorts out its vague steering feel.

Then set FORWARD DECELERATION to anything that is a LOT lower!
If INPUT DEMAND SCALER is set to 75 to 85 thats 6mph. If set to 100 thats 8mph.



Then try it.

[shirley_hkg]

Edit: What size batteries are you looking for I can recommend a suppliers for 80ah cells that are 170x130x36

It has 255mm width only.

Going to be a major surgery , if to fit 16 EVE-105 cells.

[stevelawiw]

I can't see anything obvious that's affecting your top speed, I thought they were supposed to be able to do 8mph in standard trim.
My back wheels are 10" tubeless split rims so that will give me a little bit more speed but less torque.

[shirley_hkg]

Yours is 7mph.

[Burgerman]

With stock 14 inch wheels they do actually do 7.8mph one way, 8mph the other way. My street. I had a storm 3 here and storm 4 here at the same time for 4 months. And a GPS phone... I raced them in my street against my carer. Both exactly the same. Both stock 3.00 x 8 rear tyres. The later taller 110/70 -8 tyres made it microscopically faster! About .2mph.


Pics, bigger tyres, andersons 12 + 12V, centre footplate, and rearward seat, lights moved inboard, wheels widened. 8.1mph GPS... And stock with a carer sleeping and skinny tyres etc.

[Burgerman]

Nice chair once programmed, and seat moved back, all the push handles and headrest scafolding chopped off, sensible tyres fitted, lights moved inboard, andersons etc. Smooth ride, great for long distance range but absolutely MURDERS batteries indoors. Cheap too. I paid 6k and a tiny bit.

Shame it doesent actually WORK!

[stevelawiw]

Yours is 7mph.

Err, no
With my 10" wheels (17" diameter with the tyres) I'm going a few more inches with every revolution of the wheels

[foghornleghorn]

Not got around to fiddling with any of the settings yet as want to do it on a nice day when I can change stuff in little steps and test in between.

One thing I would like to view is the service data. Spanner button gives some very basic info.

There is a plugin called DX2 Power Module Service Data Manager that in the wizard manual gives stats on usage and battery data. Can't seem to get it to download anything from the chair. Is there a different plugin required for the DX-GB2 power module / REM550 joystick?

[Burgerman]

No idea. Also not sure what you will gain from it?

[foghornleghorn]

Just an idea of previous use.

With your love of numbers I'm surprised you weren't in there with your storm 4 looking at the battery stats.