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Old 01-27-2012, 12:21 PM
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stevehookem's Avatar
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Program flow rate Sullivan Skywriter/DX8

Does anyone have a guide for programming the flow rate of a Sullivan Skywriter smoke pump with a Spektrum DX8?

My pump is currently on/off only set to the gear switch. It's smoking like crazy but dumping out way too fast!

I can't figure out how to reduce the flow rate on the DX8.

Please help!
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Last edited by stevehookem; 01-31-2012 at 10:20 AM.
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Old 01-31-2012, 09:56 AM
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Any ideas?
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Old 01-31-2012, 10:30 AM
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United States, OH, Lebanon
Joined Jan 2006
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You have to slave the channel your pump is on to the throttle. For instance on the 10x only one of the pre-programmed mixes has a throttle curve tied into being able to combine with another channel. I tie gear to throttle for this.

I'm not sure on the DX8 if it has that specfic mix but that is what you need to find.....where you can change points along a curve mixed with throttle. Then your pump you will find never needs to run more than half its max speed to get plenty of smoke.
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Old 01-31-2012, 11:08 AM
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Revelstoke, BC
Joined Dec 2009
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I just figured out how do that with my new 9503 using a TME, but I think they may set-up very similar.

I slaved Aux4 to throttle on Mix3 and reassigned the switch to a more convenient one.
P0: +72 on top,+100 on the bottom.
P1: -125 and +125.
Offset: zero
Thro Stk: 11

I adjusted the "on" EPA to +15%, and left the "off" EP at -100.

Hope this helps.
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Old 01-31-2012, 11:09 AM
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I can't figure out how to do this on the DX8. I'm sure this is correct--but how?
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Old 01-31-2012, 11:26 AM
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Revelstoke, BC
Joined Dec 2009
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Maybe the 8 has a totally different menu, but my DX7 shares similar programming features with the 9503. I do know that with the Spektrum/JRs Mix 1 & 2 are "stickied" to certain surfaces, ie rudder/ail etc.
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Old 02-01-2012, 12:53 PM
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It must be different. I can't find a way to do anything with slowing down the flow rate.
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Old 02-02-2012, 01:44 AM
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Mikecam's Avatar
Winnipeg Manitoba Canada
Joined Jun 2009
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Should be in the end point adjustments!
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Old 02-02-2012, 01:48 AM
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RTV on the gear switch
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Old 02-02-2012, 09:22 AM
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Quote:
Originally Posted by Rick1999 View Post
RTV on the gear switch
Sorry, I'm dense this morning. What does this mean?
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Old 02-02-2012, 09:23 AM
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Quote:
Originally Posted by Mikecam View Post
Should be in the end point adjustments!
So I go into the gear menu and lower the travel's high value end point to lessen the flow?
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Old 02-02-2012, 09:26 AM
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Revelstoke, BC
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Quote:
Originally Posted by stevehookem View Post
So I go into the gear menu and lower the travel's high value end point to lessen the flow?
Yes...I had to lower mine 85%.
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Old 05-04-2012, 08:24 AM
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United States, NY, Richmond County
Joined Nov 2006
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I just installed a sullivan smoke time for the first time, can someone tell me how to program my Futaba 12Z to regulate the amount of smoke as you are doing with the Spectrum or JR radio?
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Old 05-04-2012, 08:48 AM
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Joined Jun 2008
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They all program the same way, in that you make a mix were throttle is the master and another channel is the slave i usually use the gear channel. then after that set up the travel curve so it runs on hi at wot and ramps down to next to nothing at idle.
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Old 09-03-2014, 10:13 AM
1-1/2D Pilot
Joined Aug 2014
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Somebody needs to write up how to control the Sullivan pump on the DX8. All this stuff you guys are talking about sounds familiar, I can find some of it in the radio but putting it all together is tough when you haven't done this before.
I did get m Skywriter working but way too much and nothing I put in the throttle mix seems to do anything about it. I should also note that in the instructions it shows the check valve with the grooved end towards the muffler. I fought this thing all night and finally filled the smoke tank more and noticed it blew bubbles in the tank when I got it to run. Turned the check valve so the end with the grooves is towards the tank and poof! More smoke that I can see through.
My problem now is controlling it.
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