13.5 and 1s LiPo

Gazza Mon May 17, 2010 5:29 am

Hi All
Im Gary. . . the chap with the 1s LiPo running a 13.5 Brushless

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But I will first give you a run down of my Model car history . . .

I started racing model cars way back in the 70's which was a 1/8th Mardave
I.C car with a Veco engine but cut it short I could not get on with it .

so went back to the Model shop ( Modelcraft in blaby if you can remember it )
and did a swop and got the then mardave 1/12th and then raced all over
England in the then new 1/12th scale electric's we raced on wooden floors
with tyres coated in Silicone to give us the grip we needed and this was also
an art to get right otherwise you came no where . . . .

Then there was the NiCads and the cells to have in them days were
SAFT 120% again if you did not have them you came no where.

Then the Motors again there were a few you could use some better
than others all silver can types the one I used was a so called a Parma
renualt I think blue in colour and wires out the back and tamper proof.

Then the cost went up on the motors and NiCads so I quit electric
after about 10 or 15yrs then went back to I.C cars and the PB with an
OPS engine and the engine's were so much better than the old Vecos
in them days I was then into I.C cars big time untill 2 yrs ago I was
involved in a Real bad car crash ( rear ended by a 17yr old male) I was
stationary and he hit me at about 65 to 70MPH . .

So this ended my IC racing and I moved back to electrics only
because of Marshling I cant move to quick and the 30 minute finals I
cant stand that long 5 mins is all about I can take now [You must be registered and logged in to see this image.] So Back to my
old favorite the Mardave. . .

It had changed quite a lot from when I last used one and now only
4 cells and the G2 Motor Now after a lot of testing and running this little
car It still gives me a buzz and for the life of me I cant get the power out
of this motor like some of the others and no matter what I done / did I could
never win a Mardave club meeting at top level
There was then talk about Mardave bringing out a Brushless system [You must be registered and logged in to see this image.]
YES about time some thing that would put us all on a level playing field
But alas I could not get this to work as well as the others so I abandond
it and went back to the G2 [You must be registered and logged in to see this image.]
Then early on in this year the rumors started re the 1s LiPo [You must be registered and logged in to see this image.] well this got
me well intrested as I thought a 1s and a 13.5 would be about the same as the G2

Now this 13.5 brushless will only work with the 1s LiPo combination. . . .
dont go trying to run it with a 4 cell or even thinking about a 17.5 and 4 cell
they are NO WHERE NEAR the same as a G2 powered Mardave and 4 cells

I wanted to run a 1s LiPo in a Mardave with a Brushless system that WOULD
be the same as a G2 motor . I tried a few combinations and they all failed like
Way to fast to slow motors burning out speedos cutting out etc so I have done
all the hard work for you all and the 13.5 with a 1S LiPo with the Smart boost is
all that is needed

Below the Smart boost on top of my servo with a 5p peice

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Well before you all ask why am I doing it well its simple . . . . .

Most clubs used to have around 3 or even 4 heats of Mardave's and as
the top blokes got better the new comers stood no chance of catching
them and it was the same people in the finals week after week even I could
not catch a good G2 car with top cells
( oh look we are back to cells and motors again like we did in the 80's )

This Now brings the Mardave back into the 21st Centuary but you only
need 1 battery and no more water dipping and running comm drops etc
The cost is Less than a 4 cell racing EG
normal days racing say 3 rounds and 2 finals

1. 5 packs of Cells at a cost of £40 a pack ( £200 for 5 packs 4600mAh)
Thats just your cells now dont forget you will need a few spare motors a
discharge tray etc etc so lets say another £100 so thats a total of £300
I have not included the motor cleaner . . the cotton buds and numerous other things
Now the 13.5 1s set up

2. 1s LiPo £56
3 1 smart boost £25
4 Motor combo 13.5 with speed control £95 total for the items 2 / 3 & 4 is £176
Now if you are just starting out with a Mardave dont worry . . .
Get a standard set up and say 2 packs of cheap cells to start off with If by
the end of a Month you like it go the 1S Lipo route you wont regret it and this
in My Honest Opinion (MHO) will bring back Mardave racing BIG TIME

So today we raced at Hinckley and I took POLE in the Group of the 2 heats
on 21 laps with Mark on 21 laps
( Mark is one of the top men to beat with a G2. I have no idea why he is SO FASST but he is and down the straight we were level pegging poss mine a nats faster )
So in the first final I was to hold back and wait for Mark to see what
would happen but the 2nd Bend there was a crash and as I waited for him
I lost the lead to Nick
Then on the Last final I noticed that Nick and Becky
( yes young Becky Wilson was oh so fast with a G2 ) that I decided to now
PUSH MY 13.5 1s LiPo to full stretch

( note I also have added 25Grams to bring the weight up to 1002Kg )

Well some 2 Minutes into the race Becky and My self swoped first place
about 3 or 4 times and I must admit beckys G2 powered Mardave did have
a little more speed than mine down the straight and it goes to prove that
we are evenly matched but a good G2 still has the edge on power BUT. . . . .
Next week the motor may die off and my 13.5 will still be the same in a few
months time and thats what I'm after Consistancey

no more running in motor brush's and water dipping cleaning the comm and
doing the charge discharge with your cells oh yea my 4900Mah pack

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took 16 minutes to charge and I only used about 1400mah in a 5 minute race
the motor and speedo were warm NOT HOT and the battery stone cold
So want some fun with a Mardave again. . .. you have yours in the loft . . ..
so tell the Mrs and you Kids tell ya parents what you want for Christmas
yep a Scalextric set [You must be registered and logged in to see this image.]

Edit results Look at leg 2 close finish or what
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Till next time have fun
Gary Crisp aka Gazza

dazzzza Thu May 20, 2010 3:44 pm

This is very interesting we run 7.4 lipos but goign to look at this once i have the money

Tomo Wed Apr 13, 2011 2:25 am

Now that the 13.5 1s lipo seems to be out there abit more it would be great to have some feedback and see what people have found and whether they prefer it over g2 4cell etc etc etc.

Shepp33 Thu Apr 14, 2011 7:27 am

I have recentley converted from brushed to brushless and im so glad that i did. Im using a novak gtb with no lipo booster and it is working fine. I find that with brushless you can concentrate alot more on your car set up rather than trying to make your car faster. its nice to know that your car will always be quick everytime you race instead of worrying about battery and motor maintenece. The rules meaning you carnt use a esc with varible timming or turbo make sure that the cars are very close and also means a very expensive speedo is not required. if you are racing brushed but just cant get the best from your batteries and motor then its worth spending your money on a brushless set up rather than new cells and g2 motors.

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