Hi Randy,

I just bought a RX8 Gen two and Pro4HD 4300KV motor combo to run in our EP8 class at the local track, where we run 2 cell over 5 minutes. I was wondering if you could recommend a setting for that combo, I need a little more punch and top end and was thinking about putting a little Boost into it. The motor is coming off at about 165 degrees and the speedie at 130 degrees. the gear ratio is really good it winds out to about 1/2 down the straight and has good punch so I don't really want to change the ratio unless I can get more out of the motor/speedie..

thanks

Tod

Hey Tod, we actually don't want the motor winding out at all. We want the motor pulling hard until you have to lift for the following corner. I don't know your gearing, nor the size of the track but hearing your comment I'd suggest gearing up.

A little off topic, but didn't know where else to ask. I changed bearings in my pro 4 4000kv motor, and now with the slightest touch of throttle it is like full throttle. I made no other changes, rx8 gen 1 esc. I tried recalibration the radio, changing sensor wires,,,don't know what else to look for

Big shout out to Team Tekin!!
Sent them an absolutely destroyed rx8 gen 2 speedo, they sent me a brand new one ,no questions asked.

I didn't expect a new speedo, they took the time to explain how to possibly avoid the problem in the future.

In today's marketplace... that kind of customer service/support is a rarity!!

THANKS TEAM TEKIN!!

I had that happen once when I accidentally hit my throttle expo on the radio. I'd suggest making sure your radio is the same. I would reset the radio and recalibrate the esc to the radio.

Hi all!
I just installed a Teking RX8 Gen2 and a Pro4HD in my SCT410.1, all great and I love the new HD motor!

I use Tekin in all my Off-road cars and will not shift to anything else in the near future

However, I also bought the new Hotwire thinking this was a Bluetooth/ WiFi connecting to the Android app for easy peasy use on track for quick adjustments, But not, a bit disappointed about that but no biggie.

But, taking out the small fan connector every time you need to connect hotwire is a fiddly (At least initially when you set up a new system). So I was thinking making a y-lead/ straight lead and use conventional connectors.

So my question is:
1. Have anyone done this with luck?
2. If so, can you still have fan connected in a y-lead setup while in hotwire interface on android or PC? (Don't want to fry anything and heard that some had issues with fans?)

3. If not one of the above, a straight lead should still work if you disconnect the fan, this will make it a bit easier disconnect the fan and connect the hotwire when you can pull a connector on a longer lead. Its all about 5 min of soldering...

Any thoughts?

Erik

Thanks, I'll give that a try

The solution to your problem (designed specifically for this issue) is something called a "Castle Quick Connect": http://www3.towerhobbies.com/cgi-bin...?&I=LXZYU2&P=7

You plug the ESC lead that would go to the receiver into one end of the Quick Connect, the short lead from the Quick Connect into the receiver, and the extra lead from the quick connect is used when you want to program the ESC. You no longer need to use the programming port on the RX-8.

Even though this is a Castle product, it should work with any ESC that can be programmed through the receiver connector. I have personally used it with other Tekin ESCs, though not yet with the RX8 Gen-2. So long as the Gen2 can still be programmed through the RX connector, it should work.

On my 1/8th setups, I always put the Quick Connect unit in the receiver box (yes, I still use receiver boxes) and just have the long lead come out and be taped down until I need it.

I had to remove your URL at TH, as I am not allowed to post URLs yet, I though you would get rid of that as an Tech member? I don't see any reason for being that anymore then... Anyway:

Hey, that would work!
And it happens to be that I have that one from Castle for my external BEC's I use on older Tekin ESC's that don't support 7.4V.

I will check out your solution and see how it goes.

But I just think I can use a extra lead that goes to the fan port on the ESC and then just ordinary connectors on the Tekin fan, simply put just an extension that are more easy to disconnect to then connect the hotwire without fiddle with that small fan connector all the time..

Like this, cut of connector of Tekin fan, re-solder on a servo lead, put new servo lead back in to tekin fan/ hotwire port and the install a ordinary servo connector on the other end of the new lead. If that make any sense lol...

Thanks man!

You can't install a "Y" connector. A trick I use from time to time is a thin piece of tape on the connector about 3/4" long to use as a "handle" on the connector. I don't make a ton of adjustments since I know what I like, but during testing I do this.

I've also seen guys use shrink wrap to grab the part of the connector that sticks out to "stiffen" the program and fan harness a bit again to aid in grabbing it.

Did you get the Android App and Hotwire to work?

Hi Randy!

Could you explain me how timing advance works in RX8.
TP1: 0* Timing Advance
TP2: 20* Timing Advance / RPM Range 5443-20,016
TP3: 40* Timing Advance / RPM Range 5443-20,016
TP4: 60* Timing Advance / RPM Range 5443-20,016
TP5: 80* Timing Advance / RPM Range 5443-20,016

Is it so that timing advance starts from 5443 rpm and continues to 20016? What if I use motor that revs 40k? Whats the point to set timing back to normal when motor is higher than 20016rpm?

OR is that so that timing is 0 degrees from 0 to 5443 rpm and then timing will increase to xx* degrees linearly and reached xx* at 20016rpm and then stays there?

You are correct in that the esc starts adding timing at 5443, then linearly adds more until the 20016 where I will be at 40* and continue to max rpm.

I was always told don't run timing in 4 pole motors

The timing spec for those profiles is not in degrees. It is a percent of max timing (which I believe is 30 degrees).

Can you confirm this. That 80 degrees sounds like mad timing anyway

How much timing you use with tekin 4 pole motors and how much timing motors like Hobbywing 4pole 4700kv motor?