Castle Aux + shift servo on same channel

[angrchair]

I have an Axial bomber with stock radio and receiver at the moment.

I have done lots of upgrades and recently went to a Castle Mamba X and 2850kv slate.

I have the aux wire currently set up using Castle Link on my 3rd channel and have it function, bottom button is crawl mode 100% drag brake, top button switches to rack race with no drag brake.

I just ordered a 2 speed kit and shift servo, and want this to work together one channel, mainly because one button to shift and go to rock race is the most convenient, and I don't have to upgrade to a 4+ channel setup yet, but plan to get a DX5C eventually, but it's not really needed or in the budget quite yet.

I know it's possible but I'm not sure how it's going to have to be set up to work properly. I know I will need to plug a Y adapter in to my 3rd channel and plug in the shift servo and aux wire.

3rd channel is going to have to dictate the end points for the shift servo, so how to I tell the ESC aux wire that those end points should be crawl/rock race mode?

If anyone has set this up, please chime in! thanks

 

[mikemcE]

Send a PM to Robert at Castle


Hang up and Drive

 

[DavidH]

...
3rd channel is going to have to dictate the end points for the shift servo, so how to I tell the ESC aux wire that those end points should be crawl/rock race mode?

The esc dictates the endpoints; get the rr/crawler mode and drag brake where you want them, then adjust the shift servo linkage for throw. Get a servo-saver-type horn with lots of holes in it.

You may need a servo reverser to get the shift servo to move in the correct direction (rr mode in high gear, crawler in low).

 

[nedmo]

You might also need a signal reverser, depending on which way you trans switches. What I needed on my Twin Hammers.

 

[angrchair]

You might also need a signal reverser, depending on which way you trans switches. What I needed on my Twin Hammers.

If so I'll do it the hard way, flip the wires in the servo to the motor and pot.

 

[thewildblue77]

I didnt need a servo reverser with my bomber and 2 speed so you might be alright.

 

[DavidH]

The need for a servo reverser depends on your servo's default rotation (clockwise or counterclockwise), or if you can't flip the servo horn to the other side of the servo.

I wouldn't mess with the servo when you can get a reverser module (ie Expert Electronics) with integral y-harness for $10.

 

[thewildblue77]

The need for a servo reverser depends on your servo's default rotation (clockwise or counterclockwise), or if you can't flip the servo horn to the other side of the servo.

I wouldn't mess with the servo when you can get a reverser module (ie Expert Electronics) with integral y-harness for $10.

Thanks, I wasnt aware of this....Im still a noob...lol :mrgreen:

 

[angrchair]

Send a PM to Robert at Castle


Hang up and Drive

I don't know who that is or what is username is to do that.

 

[durok]

I don't know who that is or what is username is to do that.

The guy that posted this post (he's one of the Castle Creations reps that frequents this forum):

http://www.rccrawler.com/forum/electronics/597307-castle-link-card-sidewinder-4-a.html#post5817754

 

[angrchair]

The guy that posted this post (he's one of the Castle Creations reps that frequents this forum):

http://www.rccrawler.com/forum/electronics/597307-castle-link-card-sidewinder-4-a.html#post5817754

Thanks.

I got it shifting good now just have to make it play nice with aux. I sent him the following message;


I will keep this as short as possible:

Axial Bomber Tactic 3 channel stock tx/rx
castle Mamba X ESC with aux on channel 3
2 speed transmission shift servo Y to channel 3 also.

Independently both function properly.

I can set the channel 3 endpoints to min/max wit the servo arm disconnected, and successfully switch from crawler mode to rock race mode. However these end points do not work for the transmission.

I can set the end points for the servo and shift properly, but I lose the aux functionality and have no drag brake/crawl mode toggle.


What do I need to do to get this working as others have done?

 

[DavidH]

Thanks.

I got it shifting good now just have to make it play nice with aux. I sent him the following message;


I will keep this as short as possible:

Axial Bomber Tactic 3 channel stock tx/rx
castle Mamba X ESC with aux on channel 3
2 speed transmission shift servo Y to channel 3 also.

Independently both function properly.

I can set the channel 3 endpoints to min/max wit the servo arm disconnected, and successfully switch from crawler mode to rock race mode. However these end points do not work for the transmission.

I can set the end points for the servo and shift properly, but I lose the aux functionality and have no drag brake/crawl mode toggle.


What do I need to do to get this working as others have done?

Reconfigure the third channel for 2 positions, then

http://www.rccrawler.com/forum/elec...aux-shift-servo-same-channel.html#post5820901

 

[angrchair]

It's really dumb that you can't change the end points for the aux. That should totally be adjustable. The aux should match the servo not the other way around. I don't have an infinite supply of links and servo savers to find one that works with the super long end points that are set for the aux to toggle crawl/rr.

Still feel like I'm missing something

Buying a dx5c Tuesday when the lhs is open to be done with it.

 

[DavidH]

It's really dumb that you can't change the end points for the aux. That should totally be adjustable. The aux should match the servo not the other way around.

Keep in mind that this is only the first iteration of this feature; Castle has hinted at further changes and additional options in future firmware releases, such as the ability to reverse the "throw", eliminating the need for an external reverser for those that require it.

I don't have an infinite supply of links and servo savers to find one that works with the super long end points that are set for the aux to toggle crawl/rr.

Still feel like I'm missing something

You probably only need a $10 reverser module/harness and a hole drilled in the server horn closer to the axis.

Buying a dx5c Tuesday when the lhs is open to be done with it.

Nice radio. Note that if you are using AVC, there are only three channels (steering/throttle and 1x aux) as two aux channels are reserved for AVC adjustments.

 

[angrchair]

Keep in mind that this is only the first iteration of this feature; Castle has hinted at further changes and additional options in future firmware releases, such as the ability to reverse the "throw", eliminating the need for an external reverser for those that require it.

You probably only need a $10 reverser module/harness and a hole drilled in the server horn closer to the axis.


Nice radio. Note that if you are using AVC, there are only three channels (steering/throttle and 1x aux) as two aux channels are reserved for AVC adjustments.

Robert@Castle told me I can use the drag brake % adjustment on the Basic tab to adjust the threshold for toggling between crawler/racer and thus work with the throw of the servo, and it will not effect drag brake amount in rock race/crawler mode on aux. Finding the sweet spot is a bit of a challenge, been at it for an hour with no progress. Still have drag brake all the time.

Luckily my servo goes the correct direction and reverser isn't needed(something I was worried about)

Good to know about the AVC, I would definitely not be using on my Bomber, but maybe other vehicles in the future.

 

[robert@castle]

On this chart the yellow line is the amount of drag brake you are getting depending on the input from your radio.

The Mamba X has datalogging that shows what value it seeing. Connect the ESC to castle link and clear the datalog then drive a little bit in each gear. When you reconnect it to Castle Link and download the datalog it should show the AUX wire value.