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I`m sure I have seen a thread where the MSC wires was replaced but I can`t find it.
Might be a part of a bigger resto project thread.

Reason for asking is that I have a bunch of hacked MSC`s that I want to restore back to orignal look.

Sounds like a fun & useful thing to do in the forthcoming cold & dark

Searching my RC folder for "MSC" suggests I've done this any number of times to all sorts of MSC, and not just Tamiya … though Frog 3-step/2 resistor setups seem to figure prominently - probably due to "rubber bag" issues

Can't point you to any particular thread, but I seem to have spend all afternoon typing up the following so I hope it's useful  

Motor connectors are 3.9mm "Japanese bullet", you need the female or socket variety, and the insulators also need a tool for crimping them - look at product codes JS, JSI and MP71 at www.vehiclewiri...ucts.co.uk for example. 

I tin the ends of the wires, fit the insulators, then crimp the terminals, then solder. I have three soldering irons that I use regularly, a Weller 40W that is a bit crude but good for the heavier end of RC work (though not tags on NIMH cells), a cheapo 60w temperature controlled one that I got recently for fine stuff & seems good so far, and a unbranded 25w one that is somewhere in the middle, but really outperforms its modest status.

Good 60/40 multicore solder is essential, I often twist several strands together with the aid of a cordless drill to form more of a stick to melt more at once & avoid overlong heating times.

I wouldn't bother trying to crimp your own JST connectors (used for BEC power) as they are silly fiddly & require a specific (and more expensive) tool, much easier to buy the complete connector with leads already attached.

The leads on premade battery connectors (7.2v Tamiya) can be a bit short so I tend to make my own, they need a narrower tool for crimping, something like "D1" at VWP.

Resistor connectors are usually 4.8mm 0.8mm female "spade" or flat terminals, as with the bullet connectors they're pretty much only available in brass now. From memory some resistors might use 6.3mm spades, and some of the last have much narrower ones, on the order of 2mm.

Rewiring a typical 3-step MSC with either two, 2-prong resistors or a single, 3 prong, I'd suggest 22awg (7A rating) or 20AWG in purple and blue PVC for the resistor(s), and 14 or 12awg (15 or 20A) in red, black, green and yellow PVC. Most other MSCs use the same colour coding and thickness IIRC. You could use silicone as bit of an upgrade. SRBs use 14 AWG in white silicone & 24 AWG in red PVC again IIRC, apart from the Superchamp. Bigwigs have braided insulation on the battery wires. I know I've used "AWG" throughout rather than conductor count/conductor diameter (e.g. 21/0.20 & so on), but I don't think you can get too prescriptive & still hope to get the correct colours. You also need to think about outside diameters, the "big" wires often have fit through 3mm holes, the "small" through 2mm.


You'd also need some threadlock, & I think the main thing is to get everything as clean as possible so you don't set any grease burning when you unsolder connections  

Thank you so much for the tips JR!

If my memory serves me right I think the person used a 7 pole trailer cable as it has the right colors for the main wires.

I do have JST connectors and the special crimping tool that also do servo connectors 
Also have the bullet connector and even the tool that came in the old bullet package.
Some time ago I also ordered the spade terminals for the resistors. 
Also have the braided wires to do the Bigwig MSC.
I also have battery connectors and the tool to do it.

So it is really down to order the wires.
I did find a multi color combo of 24awg wires online and nearby I have a store that sells car parts incl trailer cable so I`m almost set.
Not long ago I bought flux for the first time and why in heavens name I have not used that stuff before is beond me! Soldiring now is a breeze! I usually coat wire and the spot to fix the wire with flux using a small brush.

Threadlock is something that I`ve always used. My Locktie 243 bottle must be 10 years old by now, I use it regularly. Especially on crawlers, mostly on wheel barrel nuts as those has a tedency to back out while driving.
I also have the Tamiya Gel type and the normal one in a tube.


And yeah this is a perfect winter project.

You might ask how many MSC`s do you have?
Well..... This is not all of it, but 90% or so....

caprinut wrote:

...
If my memory serves me right I think the person used a 7 pole trailer cabel as it has the right colors for the main wires.

 

That sounds like a very eddrick thing to do

HEY!!! I have pile just like that!!!!! 

tamiyabase.com/...t=20#58522

Jonny wrote:

tamiyabase.com/...t=20#58522

There it was!!!
Thank you so much!