What tires and rims do you run and a suggestion as to where to purchase?
Thanks to everyone for all of your help.
Got mine on ebay. They are great but they are only 20.5" which is good for torque but not so much so for top end. I can still hit 40 but my motor is spinning fast and I’m not sure if it would survive that speed long term. Also, with my 2002 the low sidewalls ride very harsh. I would love to find a 22" tire that would fit on this rim but so far I’ve not been able to find one.
I am very happy with the quality of the product and the seller was great to work with.
Installed the MM today - gained 4 mph. I have the controller programming software and was wondering if anyone can offer assistance on what to change to increase speed?
Also what are the jumpers on Dave’s MM and what do they do? I am on stock tires and 12: 1 gears
Don’t know about the MM. If you have a reprogrammer, I don’t know that you need it. Dave can clarify. Settings for more top end are below. Be careful though as you may be over-revving the motor and bad things might happen. Below is from the T4 manual which I’m assuming you have the T4. PM your email addy and I will send the manual over.
FUNCTION 7 MIN FIELD CURRENT
This function allows the adjustment of the field
weakening level in order to set the top speed of the
motor. This function is used only when Mode 0 is
selected.
Range 0 to 20 amps
Set 51 to 195
Resolution 0.15 amps per set unit
Example Setting of 73 = (73-51) x 0.15
= 3.3 amps
CAUTION: Do not set this function to a value less
than 51.
Important Note: The function is used to optimize
motor and control performance and this setting will
be determined by GE and OEM engineers at the time
of vehicle development. This setting must not be
changed by field personnel without the permission of
the OEM.
I forgot to add. Most find the best balance between 60-65. Higher is safer so I would start at 65-70 and work down only until you get the result you’re looking for and no lower
The mm outputs a fraction of the pulses it receives.
With no jumpers it output 15/16. Or 15 out of every 16. Not much change.
The 3 jumpers are additive in binary progression.
With p1 only 14/16 (-1)
p2 only 13/16 (-2)
p3 only 11/16 (-4)
p4 is not accessible (-8) but it would be 7/16. About 1/2 speed from actual.
Jumpers as it comes 1+3 (15-5)= 10/16 speed reading.
To fine tune speedometer:
Remove j1 for slight adj.
Move j1 to p2 to move slightly the other way.
A switch can be used for normal and high speed if wanted.
At one time I used an rfid device so it only increased speed with a keyed driver. 
Can you add facial recognition instead of the key so it only goes fast for me? LOL
Lowering this setting enables higher RPM.
HOWEVER: This is causes a corresponding reduction of available power. (torque)
Therefore set it no LOWER than it takes to get the speed desired. Mine is set to 65 on my 2 seater.
Rodney, my understanding is that the field weakens only after the cutoff point and so the loss of torque is only after that cutoff. Essentially preserving the torque at lower speeds but possibly hindering high speed hill climbing, etc… Is that your understanding?
So the jumpers are for adjusting the calibration - not limited speed, correct?
Hand in hand.
A speedometer reading of 25mph tells the controller to plug “limit the speed”.
So telling the speedometer that your going 20mph will increase the actual speed limit ~5mph.
So all jumpers in to get max.sperd and the move to kph to show true miles?
Jumpers 1 + 3 moves the limit to 40mph.
Reads correctly when set to kph.
No jumpers moves the limit to about 28mph
It comes that way, Right?
Yes it does…
I received the programming software today and to play with function 7 - was set at 65, slowly went down to 60 - really did not see a difference on the top end… With Dave’s MM - it stays right at 30/31… I would like to get to 35/38 without loosing torque as I am in a hilly area.
Change to 10:1 as mine is 12:1 - RFF motor? Like my factory tires.Thoughts?
Below is my factory T4 Config
ControlType : 353T4
SoftwareID : GL
RevisionID : 5Q
Extended RevisionID :
Setting Details
F.No. Function Description Counts Value Units
28 Fault Counter Pointer 22 22 Cnts
33 Fault 1 82 82 Cnts
34 BDI 1 39 39 Cnts
35 Hourmeter 1 (Tens/Ones) 2 2 Cnts
36 Hourmeter 1 (Thousands/Hu 0 0 Cnts
37 Fault 2 82 82 Cnts
38 BDI 2 39 39 Cnts
39 Hourmeter 2 (Tens/Ones) 22 22 Cnts
40 Hourmeter 2 (Thousands/Hu 0 0 Cnts
41 Fault 3 45 45 Cnts
42 BDI 3 39 39 Cnts
43 Hourmeter 3 (Tens/Ones) 22 22 Cnts
44 Hourmeter 3 (Thousands/Hu 0 0 Cnts
45 Fault 4 0 0 Cnts
46 BDI 4 0 0 Cnts
47 Hourmeter 4 (Tens/Ones) 0 0 Cnts
48 Hourmeter 4 ( Thousands/H 0 0 Cnts
49 Fault 5 0 0 Cnts
50 BDI 5 0 0 Cnts
51 Hourmeter 5 (Tens/Ones) 0 0 Cnts
52 Hourmeter 5 (Thousands/Hu 0 0 Cnts
53 Fault 6 0 0 Cnts
54 BDI 6 0 0 Cnts
55 Hourmeter 6 (Tens/Ones) 0 0 Cnts
56 Hourmeter 6 (Thousands/Hu 0 0 Cnts
57 Fault 7 0 0 Cnts
58 BDI 7 0 0 Cnts
59 Hourmeter 7 (Tens/Ones) 0 0 Cnts
60 Hourmeter 7 (Thousands/Hu 0 0 Cnts
61 Fault 8 0 0 Cnts
62 BDI 8 0 0 Cnts
63 Hourmeter 8 (Tens/Ones) 0 0 Cnts
64 Hourmeter 8 (Thouands/Hun 0 0 Cnts
65 Fault 9 0 0 Cnts
66 BDI 9 0 0 Cnts
67 Hourmeter 9 (Tens/Ones) 0 0 Cnts
68 Hourmeter 9 (Thousands/Hu 0 0 Cnts
69 Fault 10 0 0 Cnts
70 BDI 10 0 0 Cnts
71 Hourmeter 10 (Tens/Ones) 0 0 Cnts
72 Hourmeter 10 (Thousands/H 0 0 Cnts
73 Fault 11 0 0 Cnts
74 BDI 11 0 0 Cnts
75 Hourmeter 11 (Tens/Ones) 0 0 Cnts
76 Hourmeter 11 (Thousands/H 0 0 Cnts
77 Fault 12 0 0 Cnts
78 BDI 12 0 0 Cnts
79 Hourmeter 12 (Tens/Ones) 0 0 Cnts
80 Hourmeter 12 (Thousands/H 0 0 Cnts
81 Fault 13 0 0 Cnts
82 BDI 13 0 0 Cnts
F.No. Function Description Counts Value Units
83 Hourmeter 13 (Tens/Ones) 0 0 Cnts
84 Hourmeter 13 (Thousands/H 0 0 Cnts
85 Fault 14 0 0 Cnts
86 BDI 14 0 0 Cnts
87 Hourmeter 14 (Tens/Ones) 0 0 Cnts
88 Hourmeter 14 (Thousands/H 0 0 Cnts
89 Fault 15 0 0 Cnts
90 BDI 15 0 0 Cnts
91 Hourmeter 15 (Tens/Ones) 0 0 Cnts
92 Hourmeter 15 (Thousands/H 0 0 Cnts
93 Fault 16 0 0 Cnts
94 BDI 16 0 0 Cnts
95 Hourmeter 16 (Tens/Ones) 0 0 Cnts
96 Hourmeter 16 (Thousands/H 0 0 Cnts
27 Hour Meter Minutes 38 38 Cnts
29 Hourmeter 10/1 22 22 Cnts
30 Hourmeter 1000/100 0 0 Cnts
31 Hourmeter Auxilary 10/1 0 0 Cnts
32 Hourmeter Auxilary 1000/100 0 0 Cnts
113 Secure Hourmeter (Tens/On 22 22 Cnts
114 Secure Hourmeter (Thousan 0 0 Cnts
115 Secure Aux Hourmeter (Ten 0 0 Cnts
116 Secure Aux Hourmeter (Tho 0 0 Cnts
22 Handset Monitor/Not Used 0 0 Cnts
97 N/A 0 0
98 N/A 0 0 Cnts
99 N/A 0 0 Cnts
100 N/A 0 0 Cnts
121 OEM Use 0 0 Cnts
122 OEM Use 0 0 Cnts
123 OEM Use 0 0 Cnts
124 OEM Use 0 0 Cnts
125 OEM Use 219 219 Cnts
126 OEM Use 5 5 Cnts
127 OEM Use 0 0 Cnts
128 OEM Use 0 0 Cnts
117 Reserved 4 4 Cnts
118 Reserved 5 5 Cnts
119 Reserved 6 6 Cnts
120 Reserved 0 0 Cnts
1 MPH Scaling/Not Used 0 0 Cnts
2 Creep Speed 8 8 Cnts
3 Controlled Acceleration 10 10 Cnts
4 Max Armature Current Limit 245 245 Cnts
5 Plugging Current Limit 128 128 Cnts
6 Armature Deceleration Rate 20 20 Cnts
7 Minimum Field Current 65 65 Cnts
8 Maximum Field Current 255 255 Cnts
9 Regen Armature Current 245 245 Cnts
10 Regen Maximum Field Curre 255 255 Cnts
11 Turf Speed Limit 110 110 Cnts
12 Reverse Speed Limit 200 200 Cnts
14 IR Compensation/Not Used 0 0 Cnts
15 Battery Volts 72 72 Cnts
17 Pedal Down Field Rate Gain 5 5 Cnts
19 Pedal Down Regen Decel Rate 255 255 Cnts
20 Pedal Up Regen Decel Rate 255 255 Cnts
F.No. Function Description Counts Value Units
21 MPH Overspeed/Top Speed Regula 244 244 Cnts
23 Error Compensation 10 10 Cnts
24 Field Weakening Start 85 85 Cnts
25 Monitor 0 0 Cnts
26 Ratio of Field to Armature 100 100 Cnts
13 Rolling Radius in Inches 102 102 Cnts
16 Gear Ratio in Tenths 124 124 Cnts
18 Pedal Down Field Rate Offset 64 64 Cnts
101 Spare 0 0 Cnts
102 Spare 0 0 Cnts
103 Spare 0 0 Cnts
104 Spare 0 0 Cnts
105 Spare 0 0 Cnts
106 Spare 0 0 Cnts
107 Spare 0 0 Cnts
108 Spare 0 0 Cnts
109 Spare 0 0 Cnts
110 Spare 0 0 Cnts
111 Spare 0 0 Cnts
112 Spare 0 0 Cnts
Keep field current as high as you can to keep good torque and motor cool.
What voltage are you running?
72v , tried extra batteries. Not hitting any hard limits. Just need more motor and /or batteries.
Going to try more options on the controller.
your not going to get much more out of your setup . As i mentioned the mm gives you your higher speed , reprogramming isn’t going to get you much more . Lowering field current will get you a little more top speed on a level road but you give up some torque so maybe a disadvantage . We live in a very flat area , for customer carts with lead will lower # 7 to 59 and get them a little higher top speed . they give up a little torque but its worth it . On lithium conversions i run set them back at 65 , we have all the top speed we need so set it to get torque back and for that wooo weee acceleration . As you can see the factory settings are almost at max so reprogramming wont get you much in that area . It is good for all the other stuff . you need more power . best wat to get it is lithium . a R4fun motor or any 7hp motor will give you more than your 5hp but you probably still wont be happy and your range will be bad . Lithium is the only way your getting to where you want to go .
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