1999 yamaha g16

[cgtech]

Well , 3.45 is 69% throttle (theoretically speaking). In reality, most 0-5k controllers consider 4500-4700 ohms "full throttle". Thats why im wondering about that 25% thing you were saying. You may be able to adjust the throttle linkage some, but beware, go too far and it will jump when the pedal is pressed (or refuse to go).

[lilvampshark]

I said 25% as a wild guess. When I had the pot disconnected I tested the readings and it went as low as .35 and full turn was 3.45 which I assume reads as 3400k.
Giving me the impression I'm not getting a full reading at 0 and full .

[cgtech]

Aha. Are you sure its a G22 one? And have you tested it now that its hooked to the actual throttle linkage. Twisting the sensor while its not installed is a terrible test method.

[lilvampshark]

Heh yeah and I tried both methods and the readings are the same this pot came off a used g22. I tested my old pot and it read 0-1k as it should have. I did find out that my controller is a 5k-0 I used the blue wire instead of the black and it works . Just with the low speed. If I got a pb6 would it work by swaping the wires? (Random idea if my pot is bad)

[cgtech]

Your throttle already has a way to wire it for 5k-0. But it doesnt go above 3450 ohm anyway, its damaged. If you tried all the possible wire combinations on the pot, you already figured that out.

[lilvampshark]

Well dang. I should have tested it before i bought it. I assumed it would be ok since it came off a newer cart. I assume it's no way to fix it? Would I have any issues with a pb-6?

[cgtech]

Pb-6 there are 2 versions available, one is china copy. I think one has 3 wires from pot, i forget which. The holes pre-drilled in throttle bracket dont get perfect throttle geometry for 0-5k range. Throttle arm hangs down to get snagged on stuff. It can be modded to work, nowhere near as nice a solution as the oem sensor.

[lilvampshark]

Thanks again for all your help! I finally got it running ok after playing with all of micro pots. But new problem, it's takes off fine and is soso up hill. but the top end is still low. Could it still be a throttle issure? I don't fully understand 5k-0 throttles. My pb6 reads ~5.00 at no pedal and 0.03/0.02 at full. How sensitive is the controllee? Would a .03 variance effect my speed that much?

Second question after I save some cash I plan to throw this controller into my old club car and buy a new controller. I saw two deals for controllers. I'm not sure which one to get. A altrax 4844 400amp or a curtis 1204M 500amp. I want the most bang for my buck would the 500amp curtis be better than the 400 amp altrax?

[cgtech]

I have not installed a 500a version of the 1204m model, but it should be more powerful than a AXE 4844 (but i would be looking at the SPM, not the AXE, the SPM400 can be cranked up to 460a). The Curtis is programmable with their expensive programmer, the alltrax is programmable with your PC and a cord available at radio shack for $15 or less (software is free). Your numbers sure look like they should be getting 100%. Theres an easy way to check, find a safe stretch of fairly flat road or trail where you can reach top speed. You will need some clips for your voltmeter. First, clip the meter to controller terminals B+ and B-, drive to steady top speed, record voltage while at top speed. Now repeat that test with the leads hooked to B+ and M-. It would be great to see results within 1v of each other, but i have seen some really lame controllers as far as 4v off. On a 36v system, each 9v lost equals 25% reduction in top speed, and each 3.6v loss equals 10% loss of top speed.

[lilvampshark]

Thanks again. Well I got a good multi meter. AND did my tests pack voltage 38v. Selinoid out about the same and m- 25 freaking volts it felt like it too. I checked the throttle and it's 4500 to 0.00 full throttle it seems like that's working so I can blame the controller ?