UL-1 Connectors and solder problems

[RandyatBBY]

Reciently I have had a customer that has been having UL-1 Connectors and solder problems. They are melting the solder in a one mile race oval on the 1/6th mile course during the fifth lap. Any one else having this problem?

[detox]

This is a common problem. Replace the thin factory connectors for beafier 5mm bullets.

[JimClark]

are the ul motors the ones that have coatings on the wires and are a bear to get connectors soldered to them?

[RandyatBBY]

Interesting

[twofford71]

Dont cut the deans off. You have to desolder then resolder 5.5 bullets on

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[RandyatBBY]

Dont cut the deans off. You have to desolder then resolder 5.5 bullets on

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I had all ready done that. it is the motor couplers solder on the wires that are melting.

[detox]

DO NOT CUT THE MOTOR WIRES! The coating on the motor wires will make it very difficult to resolder. Simply desolder old connectors then resolder on new beafier ones. The thin factory 4mm motor connectors heat up too easily causing them to unsolder themselves from motor leads.

[wayne middlemiss]

This is a common problem. Replace the thin factory connectors for beafier 5mm bullets.

bullet connectors are the go, those deans ones look better in the trash can

[RandyatBBY]

Ya know the old connectors and solder on the early (first) UL-1 motors were fine never any problem (on the smaller boat). The SV27 solder and connectors always had to go and I would just hard solder and prewire wrap the connection. I guess the bean counters thined it down on both in the end.

[pescador]

I had cold solder joints on the motor connections on my first gen UL-1.
Basically just the heat shrink holding them together but I swapped them out and it's still going strong.

[m4a1usr]

Reciently I have had a customer that has been having UL-1 Connectors and solder problems. They are melting the solder in a one mile race oval on the 1/6th mile course during the fifth lap. Any one else having this problem?

I think the problem, along with the cold solder joints, is that Chinese/ Overseas factories have standardized on RoHS materials and are not either using skilled labor to complete the soldering task or the workers are in a hurry and not inspecting their solder joints. Cold solder joints using lead free solders look much different then soldered joints using lead solder. Make sure you "wet" the wires with 60/40 lead solder and with some flux before you insert them in to the new bullets. Or if your just going to reuse the old connectors, just melt and dump out the RoHS solder the factory is using. I really hate that carp. Good ole 60/40 will do the job even with the smaller bulets.

John

[RandyatBBY]

I put in the old UL-1 motor in my SMJ 30 (Short for Smoken Joes 30 inch) and on the fifth lap they melted the solder. I hard wired and wrapped with several strands of lead wire. In all test the 5 year old ESC and motor are just fine. I sorta inner weave all the strands from the motor to the ESC then wire wrapped it and shrink wrapped the connection.

[ray schrauwen]

I put in the old UL-1 motor in my SMJ 30 (Short for Smoken Joes 30 inch) and on the fifth lap they melted the solder. I hard wired and wrapped with several strands of lead wire. In all test the 5 year old ESC and motor are just fine. I sorta inner weave all the strands from the motor to the ESC then wire wrapped it and shrink wrapped the connection.

Smart, less resistance too. I'm doing this more on my boats. P-mono, Q-mono 4-sure.