Question about Drive Medical Drive Phoenix 4 wheel scooter *Free Batteries/Free Home Delivery!

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My scooter is too slow,the battery charges,but only drives at a very slow speed.While going backwards drives at a good speed.Can you tell what to do??Many thanks Diana Donald

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Hi dianaidonald

I have owned my own business for 3 years and have been working on scooters and powerchairs for 15 years. I know exactly what the problem is. Your problem is the throttle pot or somtime called the engager. or the speed pot.
1.. Replace the throttle pot and or (speed pot most likely the problem).

Good Luck

Posted on May 02, 2011


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When I put my mobility scooter in reverse it does nothing for a few seconds then it suddenly shoots backwards which is scary and dangerous can anyone tell me what is happening with it, the make is mer

The speed control is defective. Its going to full speed without the slow start. Get it checked by a local specialist.
Before you do that make sure the speed setting control is set properly.

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Scooter won't move

Things to check: Drive/Free wheeling switch, brake release lever (this activates an internal micro-switch that enable power to the drive system, battery box connectors (condition of contacts - corroded, missing, loose. etc.); main control cable (corrosion. lose or missing pins, etc). If all these are OK, could be controller or drive control potentiometers (speed, forward, backward) on the handle-bar (tiller).
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My scooter is too slow,the battery charges,but it only drives at very slow speed,while going backwards it goes fast.Can you tell me what to do?

I have owned my own business for 3 years and have been working on scooters and powerchairs for 15 years. In the future give as much info about the scooter as possible.
1. Replace the throttle pot and or the speed pot.
2. Sometimes even batteries that take a charge are not strong enough to run the scooter. Have them load tested at an auto parts store to make sure. If you have bad batteries that will make you scooter do what you say it's doing. Don't forget your reverse speed is only 1/2 as fast as the forward speed on all scooters.

Good Luck

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1 Answer

Just bought this from an individual who knew nothing about it. Scooter is in excellent condition however it has been sitting for a bit. The problem is the scooter only goes forward when in the High speed...

This model Drive Phoenix 3 wheel is found for sale at pharmacies and is subject to floor model abuse.

Most common abuse is not recharging batterys and letting them sulfate thus
reducing life of of charge.

I have found that the foward and back-up levers have been bent
by people sitting and squeezing both levers at the same time. the resulting misshaping of the levers results in a very slow speed comand to the controller because of limitted movment of speed control. The result is that main control (turtle/hare) must be advanced to fast (hare) position to get scooter to move.

I have had success straightening levers by carefully bending them in opposite direction on my Phoenix 3W ( which was a clearence item with no warranty.)

The real (legal)solution is ordering a new lever having a technician
replace it so as not to void warranty.

Hope this helps....jth1939

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Batteries are fully charged. Scooter goes at full speed for approx. 1 block, then will slow to 1/2 speed and back up to full then back to 1/2. We have new batteries, checked for voltage at end of run, one...

Based on your description you have a bad throttle potentiometer or speed potentiometer. Remove the covers of the front console and check the resistance throughout the range of both pots at the connector. It should be even throughout the range with no dead spots. The newer CTE throttle pot is more reliable than the older model Celebrity scooter with the 5K ohm potentiometer. I usually replace the throttle and speed pots as a pair since they are connected electrically in the console.
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If you have clean brushes, you can still have a large amount of conductive brush dust in the motor and armature. Blow out the dust with compressed air. Check the motor and brake with you meter. The motor coil resistance should be less than 1.5 ohms and the brake should read between 40 to 60 ohms. Hope this helps.

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1 Answer

My shoprider cobra loses speed when I am on top speed.

Hi. Does the machine do this more soon after removing the machine off the charger? When a mobility scooter is going down hill, the controller feeds the voltage generated by the motor back into the batteries. When I an testing machines here at the workshop, I have seen cases where 10 to 12 amps is going back into the batteries on a down hill run. If the batteries are fully charged or unable to take much current, the controller slows the scooter right down to limit the higher voltage generated.
It might pay to check the battery leads and connectors as well, and get the batteries tested.
While you are driving along, try moving the speed lever slowly up and down, not in and out as you normally use it. Sometimes a faulty speed pot ( wig wag ) will cause the speed to change.
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I have a Pride Legnd..the scooter started loseing speed, I would adj the speed pot and the unit would stop, adjust back down and unit would run, but slow. I left the speed speed controller alone and unit...

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