R/C Tech Forums - Spektrum

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I did do a search but did not find anything....

I need to know the part number or who to call to get a case replacement for the SR3001. The case got hit and broke.

capacitor on the micro receiver (SR3500)

Hi,
Just get one of these tiny receivers, quick question, do I need to use a capacitor as on a SR 3000 or SR 3001 (pro) receiver????

thanks,
al

Quote:

Originally Posted by rampal

Hi,
Just get one of these tiny receivers, quick question, do I need to use a capacitor as on a SR 3000 or SR 3001 (pro) receiver????

thanks,
al

If you had to before then you will need to with this one as well

Quote:

Originally Posted by rampal

Hi,
Just get one of these tiny receivers, quick question, do I need to use a capacitor as on a SR 3000 or SR 3001 (pro) receiver????

thanks,
al

All 4 cell 1/12th racers running without a Rx pack need a cap as the pack voltage can get low on power late in a run and this will make the recived failsafe.

All BL mod racers running 4/5/6 or LiPo need a cap. If you punch the throttle hard with a low turn BL mod motor you can drop a 6 cell pack or 7.4V LiPo pack's voltage low enough to trigger a fail safe. A cap will prevent this.

Anyone have pics of the spec. antenna mod into a ko propo helios?? Thanks

I've run a 4.5 Novak in 12th without any cap on the receiver. No problems at all. The personal will stop counting before I failsafe with a Novak GTB. This was without a receiver pack.

If you try running without a cap I would recommend that you bind the receiver so that the failsafe has a bunch of brake in it. There's nothing worse than shutting down at the end of the straight without having any brake set on the failsafe.

Quote:

Originally Posted by redman

Anyone have pics of the spec. antenna mod into a ko propo helios?? Thanks

anybody???

Quote:

Originally Posted by redman

anybody???

Search the forum, or this thread, or both. It's been posted before.

Hi,

Couldn't find an answer on the thread so here is my question:
I'm putting a telemetry system in a nitro car. In the manual, the connecting cable from the telemetry unit goes into the battery port on the receiver. But then what with the battery cable? Do I use a Y split?

That (Y cable) or you put the battery on the 3rd channel on the receiver.

can i use the high speed mode on my helios if im using a spektrum pro??? its the switch located at the back of the module slot. tnx!

I was told the roll out configures in the manual are wrong can anyone tell me what it really is?

Quote:

Originally Posted by tooofast

I was told the roll out configures in the manual are wrong can anyone tell me what it really is?

From Spektrum tech support:

Quote:

There is an error in the manual regarding the roll out calculation for computing the speed from the rpm.
For method A in the manual you are to measure how far the car moves in inches in 10 revolutions of the item being used to measure the rpm by the sensor (this would be the spur gear, flywheel, etc), then divide by 10 to compute the roll out. There is one step to add to that calculation however, you must convert the measurement in inches to feet. So for this method measure how far the car rolls in 10 revolutions of the spur gear, flywheel, etc, in inches, then divide that measurement by 120 (12 times 10). So if for instance the car rolls 43 inches in 10 revolutions, divide 43 by 120 to compute the roll out value to store in the handheld unit which would be .358 which would round up to .4 .

For method B, you first compute the circumference of the tire by measuring the diameter of the tire in inches and multiply by pi (3.14), then divide that number by the internal gear ratio of the vehicle. Here again however this must be converted to feet. So as an example, say the diameter of the tire is 2.5 inches, if the internal gear ratio of the car is 1.83, multiply 2.5 by 3.14, then divide by 1.83 which comes out to 4.29, divide this number then by 12 to convert to feet and you get .3575, which again rounds up to .4 .

Thanks Nitrohigh your help was greatly appreciated. :cool:

Has anyone had any better luck with these things? I just bought one and am itching to get it setup.

Thanks again Jeff

Quote:

Originally Posted by chicmagnet

can i use the high speed mode on my helios if im using a spektrum pro??? its the switch located at the back of the module slot. tnx!

Yes, I have my Z-1 in the High-Speed mode and it works fine.