has anyone tried spektrum telemetry system ?

if so how does the rpm sensor mount up ?

tj towne

Tj I have not used one myself but have saw a few guys use them. They mount the piece of reflective tape on the rear axle itself then mount the eye one the rear pod. You then do the math with your gear ratio and figure out your motor rpm. Hope this helps. Steve

steve
yes it does help I just wonder how acurate it is.. can you ask those guys what they think?
tj

steve
yes it does help I just wonder how acurate it is.. can you ask those guys what they think?
tj

I've been playing with the telemetry for 2 weeks ... rpm sensor, temp sensor, volt sensor, they all work GREAT!

Lap timer ... can't figure that one yet (it doesn't work right...) ... I sent an e-mail to Horizon about it ...

Steve.

PS. what is the most surprising to me about this telemetry package is that it weights an incredible total of only 9 grams (all sensors + telemetry case).

whats the lap timer doing?

tj

I have run it for two weeks and its Something new to look at, I agree with steve the Lap counter is counting laps under 2 sec. and misreading, The Information is great for tuning Motors for gearing with the Temp and seeing the rpm on the motor.

I mounted the Rpm sensor across the top plate on the rear pod so I can move it up and down with Shims for Different Size Gears

whats the lap timer doing?

tj

It registers inexistant laps ... 4.0-4.0-1.6-4.0-4.0-4.0-etc ... I'd understand it a little more if it'd split a lap in two, but it's not the case ...

I tried all possible ways in making it work (I think) ...

The only thing I haven't tried is mounting the lap trigger 8"-36" above the racing surface (like it says in the manual) ... mine was set down on the track ...

Steve.

I'm selling mine..brand new never used......I wasnt to impressed just reading the instructions.

The lap counter works great but the voltage reading is off and the temp sensor doesn't work at all. The rpm sensor was kind of tricky but it works great. I put it on the axle and place the sensor about 3/32 away. If it is too far away it won't register. The voltage is reading the rec voltage not the pack voltage for the electric car. I used the lead and soldered it to the main battery connector. As far as the temp sensor I tried taping the temp sensor to the top of the motor and then tried using the loop around the motor and nothing. Is it defective???

The lap counter works great but the voltage reading is off and the temp sensor doesn't work at all. The rpm sensor was kind of tricky but it works great. I put it on the axle and place the sensor about 3/32 away. If it is too far away it won't register. The voltage is reading the rec voltage not the pack voltage for the electric car. I used the lead and soldered it to the main battery connector. As far as the temp sensor I tried taping the temp sensor to the top of the motor and then tried using the loop around the motor and nothing. Is it defective???

Your lap counter works great??? Have you run on the track for like 4 minutes and look at the lap times for the entire run???

The voltage reading isn't off (here) ... you just have to use the proper sensor: receiver voltage or battery voltage.

There are (2) different temp sensors: one for electric, one for nitro (loop) ... you either get one or the other depending what telemetry kit you buy. My temp sensor works great ... and this particular feature by itself makes the complete package worth it: Live motor temp and alarm feature ...

Going back to the lap trigger ... I just don't get it why they recommend for the trigger to be set 8-36" above racing surface .... 3 feet in the air, why ... I don't get it!?!

Steve.

I had mine mounted about 12 to 15 inches off the track on the steps were the drivers stand is and it still Misfired.

I only used my lap counter for practice. I ran about 2 minutes each time to check my chassis changes. As far as the voltage reading, I soldered the lead to my main battery and hooked up the plug with 3 wires to the telemetry box and the single orange lead to my receiver. I purchased the electric kit and got a loop with white wire and a yellow ball on the end (about the size of those small caps we used to run on our motors).


I am thinking the lap counter needs to higher up than you think because the infared signal can dispurse a wider angle to catch the eye in the car. If you had a car on the outside of you as you passed the counter it may not read if it is too low. I tried it at about 6 in off the ground and had difficulty with it reading. About 10-12 seemed just about right for me. As far as the 36in off the ground recommendation is for those nights when the hacks are out there and you catch alot of air going down the straights!!

I only used my lap counter for practice. I ran about 2 minutes each time to check my chassis changes. As far as the voltage reading, I soldered the lead to my main battery and hooked up the plug with 3 wires to the telemetry box and the single orange lead to my receiver. I purchased the electric kit and got a loop with white wire and a yellow ball on the end (about the size of those small caps we used to run on our motors).


I am thinking the lap counter needs to higher up than you think because the infared signal can dispurse a wider angle to catch the eye in the car. If you had a car on the outside of you as you passed the counter it may not read if it is too low. I tried it at about 6 in off the ground and had difficulty with it reading. About 10-12 seemed just about right for me. As far as the 36in off the ground recommendation is for those nights when the hacks are out there and you catch alot of air going down the straights!!

The yellow ball IS the sensor ... tape it down to the motor can (you can check it's working right by squeezing it tight between your fingers).

Steve.

I just tried the temp sensor again and still nothing. I squeezed it and didn't get any reading. My RPM sensor doesn't read now. It worked Saturday. ???????

About the Lap Counter function,did you guys had to get the lap trigger separately or did it come with everything else? A friend of mine got his telemetry kit and was looking for the lap trigger to only find out it was an optional deal costing around $50. Boy,was he pissed!
-George

The great thing about the lap trigger is that if only one person has it at the track anyone using the telemetry would be able to use it also.

About the Lap Counter function,did you guys had to get the lap trigger separately or did it come with everything else? A friend of mine got his telemetry kit and was looking for the lap trigger to only find out it was an optional deal costing around $50. Boy,was he pissed!
-George

I beleive the reason it is sold seperately is that only one trigger per track is needed. I'm sure there are many racers not looking at purchasing the trigger knowing many local racers already have one set at the track.

Steve.

About the Lap Counter function,did you guys had to get the lap trigger separately or did it come with everything else? A friend of mine got his telemetry kit and was looking for the lap trigger to only find out it was an optional deal costing around $50. Boy,was he pissed!
-George

Yes the "the lap trigger" was optional, but it only need one on the track for everyone. But even if you have to purchase it the total cost is not bad for what it offer compare with the other telemetry or lap counting software.

And I have the same problem as everyone with the lap counter... Maybe I sold my Orion to fast ??? The min time lap, and race time lenght with the total lap exact time was a great function in the Orion lap counter that I was thinking will be on the Spektrum to. :confused:

CrazyRonny :dude:

Ronny & Steve-Thanks! Bad thing would be if you were the only one running the Telemetry in a practice session at the track & the other guy that has a Lap Trigger doesn't show up (or if you go to another track where nobody has the Trigger)-what to do then? I would probably haul out the AMB from the shop! LOL

I did testing at the track today and found out more on the lap timer issues ...

The problem isn't with the lap trigger itself since:

A friend held my handheld unit while I was practicing and he wrote down ALL the laps on a sheet of paper. Well, ALL laps were fine reading the handheld unit LIVE ... but when we scrolled through the laps after I was done practicing some laps (like 5 out of 40) were now below 2 seconds ... like 1.6 or 1.4s ...

I called Horizon and reported the issue to a technician ... the technician said John Adams (spektrum telemetry designer) is to call me back tomorrow.

Steve.

I did testing at the track today and found out more on the lap timer issues ...

The problem isn't with the lap trigger itself since:

A friend held my handheld unit while I was practicing and he wrote down ALL the laps on a sheet of paper. Well, ALL laps were fine reading the handheld unit LIVE ... but when we scrolled through the laps after I was done practicing some laps (like 5 out of 40) were now below 2 seconds ... like 1.6 or 1.4s ...

I called Horizon and reported the issue to a technician ... the technician said John Adams (spektrum telemetry designer) is to call me back tomorrow.

Steve.


Hi Steve,

Call Jocelyn at St-Roch. I talk with him yesterday and he said "Ben B. from Granby I think" found something about this problem... He tell it's should be the pressure we put on the button on the hand held unit when you try to look your record lap... I think he said to much pressure cause this kind of problem. I don't test it myself yet.

CrazyRonny :dude:

my beef so far ( can't hook it up ) is the length of the sensor leads. Hell, there's barely enough for a 10th scale, let alone a 1/8th trk. Gimmee a break !! :mad:

Can this be used with standard 75 mhz controllers, or do I have to buy a Spektrum radio?

Can this be used with standard 75 mhz controllers, or do I have to buy a Spektrum radio?
Spektrum .. you have to bind the telemetry to the Soektrum

The RPM funtion is the most important as it allows you to gear in the motor power range. Your dyno will tell you where your making the most power, now you can apply it to the track

Steve

I did testing at the track today and found out more on the lap timer issues ...

The problem isn't with the lap trigger itself since:

....

I called Horizon and reported the issue to a technician ... the technician said John Adams (spektrum telemetry designer) is to call me back tomorrow.

Steve.


Any new update with the lap timer issues ... ?

Thanks

CrazyRonny

Any new update with the lap timer issues ... ?

Thanks

CrazyRonny

Spektrum guys were in Fla ... they have the fix available ... my brother's and I systems were fixed and now work flawlessly.

I think they'll recall all defective systems ...

Steve.

Thanks for the information Steve... :)

And good job in Florida for you and your team :thumbsup:

Just got the telemetry. Where is everybody mounting the RPM sensor. Are you using the spur gear?? or the axle, hub? It says to stick the reflective tape on the spur gear, but you'd run out of reflectors after a couple spur gear changes.

My mph is way off. Is anyone experiencing this?? It says like 150 mph!!! I have the rpm sensor mounted below the axle with the chrome tape on the axle itself. Its real close to the axle. I entered 2.4 for the rollout.

hello everyone i have a brand new electric telematry and all i did was open the box to look at it. and then i just didnt want to use it cuase i could use the money. does anyone want to buy it off me? never used! pm me if you want!

My mph is way off. Is anyone experiencing this?? It says like 150 mph!!! I have the rpm sensor mounted below the axle with the chrome tape on the axle itself. Its real close to the axle. I entered 2.4 for the rollout.

You need to set rollout in feet, not inches.

Steve.

You need to set rollout in feet, not inches.

Steve.
Thanks, Steve, that makes sense. I thought that was the case, but the instructions aren't real clear on that.

racing steve,
how do you set it for feet? instructions give 2 ways to set it up but do not say
anything about inches/feet?
they told me to send my little module back because i was not able to read battery voltage with the three wire harness hooked to the car battery. only read 3.31 volts. they said i had it wired wrong. talked to tec at horizon, asked me how it was hooked up. told him and sent it back hooked up to the module same as in car. have not heard anything in 3 weeks. guess it got to them?
maybe i'll hear something soon!
anything you can tell me can only help, right?
later, willis.

racing steve,
how do you set it for feet? instructions give 2 ways to set it up but do not say
anything about inches/feet?
they told me to send my little module back because i was not able to read battery voltage with the three wire harness hooked to the car battery. only read 3.31 volts. they said i had it wired wrong. talked to tec at horizon, asked me how it was hooked up. told him and sent it back hooked up to the module same as in car. have not heard anything in 3 weeks. guess it got to them?
maybe i'll hear something soon!
anything you can tell me can only help, right?
later, willis.

If you set the RPM sensor on the rear axle (or spur) ...

Rollout in feet = tire diameter in inches X 3.1416 / spur X pinion / 12

Steve.

racing steve,
thanks i'll try that when i get my module back,
thank you, willis.

Called the spektrum guy yesterday. He said the manual is wrong. So it IS in feet. Also if you don't unsolder your batteries or unplug the telemetry, the unit doesnt reset. I wired a microswitch inline on the red wire of the voltage harness. You can then just flick the switch to reset it.

davz,
unplug to reset what?
willis.

racing steve,
got my module back today, said i had a bad voltage reg. works fine. gives correct drive batt. voltage and gives true MPH, without conversion # you said?
thanks for your help.
later, willis.

davz,
after reading your post, i have to ask, why would you not change batteries?
if you did you do not need a switch.
later, willis

I don't change the batteries in practice. I usually just bring the car in and nuke the same pack over and over for practice.

Anybody got a pic of how they got their rpm sensor mounted? i tried a few ways but it will only read if I put a light right behind the car.