RC Tank Warfare community hobby forum

I'm upgrading the MFU in my King Tiger and after some deliberation the new board I have decided on (Clark TK24) has proportional smoker output built in.
Hence, I no longer need the proportional output from my Tarr Mk 4. I could just buy a Mk 2 of course but it seems to me that it should be a simple enough matter to bypass/remove the proportional regulator board that sits between the Tarr and the motors on the Mk 4 (and Mk 3) version.

Can anybody offer a little guidance/advice on this?

Cut the two wires from TARR to the regulator and join them.

Although I've not tried it.

Thanks Mr Tankbear, I kinda thought that was the way to go, but not having taken the lid off I wanted to be sure. Actually I thought I might install a plug with a jumper, that way I can plug the regulator board back in if I swap things around again later on.

For the TARR heater element I found a little voltage step up is nice tweak the smoke output levels. I like between 8.5-9 volts.

How do you step up the voltage? I'm presently using 6 cell NiMh (5000mh) and full charge it only makes about 8.6v with a quick drop under load (nominal around 7.4v). To utilise the proportional output from the TK24 I obviously have to take the smoker output off the board (I think this is around 7.2v - 7.4v max) so how do I step it up?

Little step up that you can up the voltage with from the 7.2 (holds the power more steady too) most of these little audio amps like 12 volts so I use it for that too.



SUNKEE LM2577 DC-DC Adjustable Step-up Power Converter Module

Price:$6.95 Free Shipping for Prime Members

Output voltage: continuously adjustable (4-35V)
Output Current: 2.5A (MAX)
Module size: 49 (mm) x26 (mm)
Input mode: IN + input positive level, IN-input negative

Tankbear wrote:Cut the two wires from TARR to the regulator and join them.

Although I've not tried it.

I've tried it and it works fine.

Thanks Del, good to know it works ok.

Tao, thanks, I been buying the Sunkee step-down boards for years and didn't even think about them also making a step-up board

Anyway, found the board on the Uk site no problem but it's about twice the US price and no Prime shipping. However I did find this:



Cheaper and free shipping, also has display for easy tinkering - do you think this one will be ok too?

They all should work. I used that one..and display helps but I also double check with a little volt meter too.

Dohh, I'm getting old timers disease I think - got the board the other day and found it to be an experimental voltage stabilizer/regulator not a step-up. It is however a really nice board and I don't have one so it's all good as they say.

Got a proper voltage step up now but one thing occurs to me; the board outputs a steady voltage (up) regardless of the source voltage (as long as it is less than the target voltage). But if this is the case it will over-ride the proportional output from MFU as this is controlled through voltage output to the smoker?