Arked Motor, now will only move 1 inch. What next??

[Volt_Ampere]

You can try replacing that transistor. (and resistor) Mauser, Digikey, Newark will have them for a few bucks. You might get lucky. Worth a shot. It looks like it will be easy to do. Look for damaged traces on the board too.

[mallardw]

From what I can tell the resistor is 33ohm 5%. It has 4 bands orange, orange, black, gold. Its hard to tell if they are orange or red. I tested the ohm on one next to it and it comes to around 34. The bad one is 600-700. Is there a big difference if i can only find a 35 ohm resistor?

The transistor has 75645p on it. Looks to be a 75a, 100V. Is there any other specs i need to be concerned with when purchasing one?

Amazing the amount of knowledge on this forum. Thanks guys.

[Sergio]

These should work and for the price get an extra one...

Mosfet:

http://www.mouser.com/ProductDetail/...vn5iE4Qw%3D%3D

Resistor:

http://www.mouser.com/ProductDetail/...fEiDThyLMzE%3d

[Volt_Ampere]

Sounds like 33 ohm. THey are probably all the same there. Replace it with a 33 ohm. Look very carefully for blown traces around that resistor and mosfet. You can repair the board too if it's damaged but that may be a little more work. Look for other damage when you are doing the repair and you may get lucky and have it back running for only a few bucks.

[rib33024]

interesting read about the Curtis controller, With pics


http://ferromit.com/controller.html

[trainsafe]

Originally Posted by rib33024

interesting read about the Curtis controller, With pics


http://ferromit.com/controller.html

Cool project there. It is interesting that the Curtis controllers are so universal.

It still looks like a lot of putzy work.

[mallardw]

Parts are ordered, should be here Monday. Really hope $3 worth of parts solves the issue.

Step 1 complete.

If it does not however, what would you guys suggest I get?

Right now the cart runs 30-32. Upgraded motor. Stock controller and solenoid.

Larger tires and lift kit possible in a year. Rear seat already installed with HD leaf springs. I use the cart to pull a small trailer around the yard and also pull a dual axle trailer when necessary.

Thanks.

[jjance]

It looks good. There is only one thing I would suggest. It is a solder sucker to clean those mounting holes out good before you try to install the new components.

http://www.walmart.com/ip/Desolderin...619170&veh=sem

Google it. Walmart was just a suggestion.

[mallardw]

Funny you said that. I'm going to get one before Monday. I asked the guy at RadioShack for one but he said "nah you don't need one." I knew I should have gone with my gut.

[teecro]

Originally Posted by mallardw

Funny you said that. I'm going to get one before Monday. I asked the guy at RadioShack for one but he said "nah you don't need one." I knew I should have gone with my gut.

Wick-Up or what ever it may be called works good too... Its a braided flat wire that soaks up molten solder...