Hobbyking R2 Speedometer for RC Car

 Amaury 230 points

Yeah, no problem

 hells angel 110 points

will this work on sensorless system

 Robert Padron 67 points

No mate *(

 hugo 8 points

Raumund, this work only on eletric cars, mensuringo by eletrical discharges.

 hells angel 110 points

how about for sensorless system?

 philominus 364 points

you need sensored ESC and motors

 shmuel 106 points

I had the same problem. connect 1k ohm resistor between the alligator clamp and one of the 3 wires (iron one of the 3 wires direct to the resistor) of your esc and it will work. good luck

 jvalen 2 points

christos, can you please put some details about the setting, how you calculate the Ratio parameter ? regards

 christos 1 points

example spur gear 80 motor gear 20 gear ratio is 4.

 jvalen 2 points

christos, you are talking about tooth ? then my slash is 54 tooth spur and 11 tooth pinion ... then the ratio is : 4.9, right ?

 christos 1 points

yes.i wish that helps you.

 jvalen 2 points

ok I will try and send my results .... regards

 Adam 36 points

only works with brushless, see detail on file

 sgchuco 25 points

It says 3~24V(7.4 recommended) but only has pins for 7.4V LiPo so you probably can't unless you mod the insides.

 bananabender 130 points

thx i have the unit was just wondering how to wire it , it does say its really just suitable for 2s but can take upto 23v at users risk but how to wire up i dunno

 sgchuco 25 points

Assuming the leads on one side are balance leads, you can connect the positive to positive & negative to negative. There is still always a safety concern, I've plugged things in to the wrong places & had a few small fires, just burned the devices luckily.

 monkeyman20 2 points

what your phone number,i would like to no when i mite get my order. thank you john Davis

 monkeyman20 2 points

how does the speedometer connect to your r.c. motor electric,i have only got one ware that i no of.help

 bananabender 130 points

john look just up above under files tab theres some instructions i still havent hooked mine up sorry

 monkeyman20 2 points

yep but need more than two ware,don,t you,i have the Banditan i up greaded to a biger motor brushless,now i kind of like to no how this thing will go,some body help.

 monkeyman20 2 points

I just now seen where it comes with out connecting wares,where in the heck would you get the wairs i need at,help one more time somebody.

 bananabender 130 points

john if your using 2s lipos in ya bandit it should be great set up as is, mine came with all the wires for 2s lipo battery to suit deans battery connectors what battery u use ? did you get no wires with the unit ?

 monkeyman20 2 points

Is it Bananabender,i am using the battery that came with car when i bout it,but i went to the brushles motor seem to be fast,i use two battery,not at one time ,two so i can run a bit longer,now getting back to wires,i only see two that i no of,hay thank for your help,but if i need more than two wires where do i get them from to hook this thing up,some one get back to me ok.

 bananabender 130 points

hi john mine came with deans battery connectors from memory which is what i use in saying that i can use it for 2s set up as is , ive not used it yet though , but you can find deans connectors here or maybe even the traxxas style if thats what your using , you will need to learn how to solder and buy the decent solder iron etc or i highly recomend maybe going to local hobby shop and asking for some help they often will solder up battery etc for small charge also youtube is very handy for learning about rc stuff look for squirelod he has some handy tips on soldering etc but like i say im yet to try my 1 of these ile also add hobbyking dont seem to have deans connectors no more they recomend using xt60 battery connectors and i think thats a good idea if you plan to buy other rc toy maybe think about changing all battery connector to xt60 style plug or traxxas have a look here on h/k up on left side in index of items under battery accesories or adapters etc

 rivera 13 points

A que te refriere glow por que El Baja no tiene glow plugs ese tipo de motor USA spaksplugs simestas hblando de El speedometer solo VA conectado a tu battery pack te recomiendo no de 6 voltios con 1600hm minimo y para q El sistema Lee a Los rpm o velocidad connect o setealo a tus spur gears o fly wheel algunos lo setean al rim to do depends uqe Baja o tip de carro ten as y done esten colocados El motor y transmicion por eso algunos lo setean al rim para CAda carito es in seteo diferente solo una tu imaginacion de igenieria y es lo bueno de este hobby cuando no tiene que disenar cosas espero que te ayude end al go

 eliasin 12 points

Exelente. me puedes decir como conectarlo al spurgear o a las rim? para medir las rpm

 rivera 13 points

Es mejorr al spur gear por que recuerda tendra variacion porque Las ruedas vibran y El spur gear es mas steady

 eliasin 12 points

Me puedes enviar una foto a mi correo para ver como lo instalaste en tu coche?

 rivera 13 points

Si quieres a tu email o la voy a poner end este web the hobbyking

 eliasin 12 points

sabroso_elias*hotmail**** saludos y mil gracias

 Thiago dos Santos 145 points

envia para mi tabien thiagomax*pop****.br

 martiman 174 points

I don't have one but it seems to be that all the other wires are just so it can measure the battery voltage and motor RPM (which is probably why you need to hook it up to one of the motor wires.
Can you guys just try powering it up with a seperate 2S pack (if yu are using more than 2S)and not connect the other wires and see if it works?
It should act like a GPS and record your speeds. If this indeed works without having to connect the other wires then this is a cheaper alternative to the Garmin Forerunners.

 rivera 13 points

si lo es es compatible con todos RC cars trugys buggy trucks solo que cada no tiene in seteo diferente solo dejate llevar por Las instrucciones y un poco de imaginacion y lograras setear

 eliasin 12 points

Hola entonces para uno de glow se le puede adaptar suponiendo que la bateria de los glow es de 4.5 volts? saludos

 jvalen 2 points

rivera, puedes poner la informaicon en el sitio de hobbykin, no entendi como calcular el parametro Ratio, en un slash 4x4 gracias

 rivera 13 points

yes will work but may variality on how the water move or wind but so far work

 monkeyman20 2 points

does this speedometer come with instrucking ,i hope so.

 monkeyman20 2 points

How about some out their in r.c land tell me about the speedometer,how does it work an how do you conect it to your r.c.car,i have the low class car the one call bandit,does it need wairs to conect to this speedometer are what. help

 Carlos 23 points

my answer is this work this my boat r/c!!! ok im need the exactly calculte speed to go my boat but y complement my boat with esc 120amp turnigy and the motor 3660 3060kv but my boat fly and y need see exactly speed for y much expense for this boat!! thanks for acept my bad english

 Will 9 points

Because it's based on motor RPM, gear ratio and tire diameter it's pretty much impossible to make it work with a boat. You need to know the slip percentage of the propeller which is pretty much impossible to calculate without already knowing the speed. In an off road car it'll be off by a fair amount too since tires will balloon a lot at high speeds and change the diameter substantially.

 bananabender 130 points

it measures speed based off what gearing you put into it so you need to know your gearing and tyre dia. etc speedwise its taking a punt maybe read the files tab above but basically i would get a pushbike speedo for a scooter , i got this i dont use it i may in the future its recomended really for 2s 7.2volt batteries it does say it can take 23volts but read the instructions in file tab will explain how it works

 Tomas 2 points

it measures voltage only for 2s batteries

 ALEXSANDER 9 points

only 2S

 Smoth 5 points

No, look into Files folder, there´s the manual.
Direct batterie wiring, you have to take port " 2s" and www.link

 clyde m 33 points

i think its used on electric car,clamp white wire to one phase of motor.(one of 3wires cumming out of motor).

 Daniel 5 points

there are no wires 'cumming out of the motor' comeing is a more accepable word!

 WIDELOAD 38 points

You mean coming and acceptable www.link

 phdpasso 101 points

All my RC's cars are very MACHOS . However, it seems that I can't use this device, because there are no "cumming wires" from motors.

 clyde m 33 points

this is discussion about the product.(r2 speedometer)NOT MY SPELLING.!!!!!!!

 phdpasso 101 points

You're right! I do apologize. It seems to be a nice device. Price is a bit high, but if works, it's OK. Best feature is that is tiny, not bulky as some portable GPS.

 monkeyman20 2 points

can any body tell me if this speedometer come with conecion wares,to go to where thay go to.

 Mauro 1 points

This item is for electric motors or can be used also in nitro engines.?