Announcement

**Disc** · 03-05-2006, 10:47 AM

When the Thottle Jockey is "ON' your throttle curve won't
be an issue, so leave it as you have it.

When ON the TJP gives you the same headspeed no matter
where your pitch is. or at least it should!

**sparky** · 05-05-2006, 09:37 AM

hi still having a few probs understanding the set up of my tj pro.

im running 0 degrees pitch at centre stick in all flight modes. my basic throttle curve set up without the tj fitted would be:

0 25 50 75 100 in normal

100 75 50 75 100 in idle up

i would have then tweaked them to set my different head speeds. is this correct so far and would i leave them like that even once the tj is fitted to have a back up throttle curves?

next im not sure what they mean about the 25% minimum throttle setting in idle up. do they mean just to have the lowest curve position greater than 25%?

next comes to fitting. if the bracket is meant to go between the engine mount and frame then i cant get it to fit my shuttle as there is no room. or does it bolt on the outside of the frame?

hope someone can help me. been going it alone with learning to fly helis. can hover fine but im still not sure what different head speeds looks and sounds like, thats why i got the tj pro.

the heli is a shuttle zxx with futaba ff9 gear and a irvine 36.

thanks
mark

**Disc** · 05-05-2006, 10:09 AM

you need Ade.....

I only know what the throttle jockey will do....

Ade is at Clubman3D so if you can goto it with the Heli he is runing a
Free clinc fri/sat/sun it can help you there.

Also find a Club where you can get help.
Call several Clubs visit them and find one you like.

BMFA Club list is here:

http://www.bmfa.org/clubs/clist.php

Or someone esle

**Dedcalm** · 05-05-2006, 01:16 PM

Keep the throttle curves as you have them, i.e. the normal mode goes from 0 to 100 and the idle up is 100 50 100 or similar. The 25 minimum setting in idle up is because the TJ will disable below 25% throttle which is obviously not great whilst flying...

I run a TJ pro on my rappy 50 with a FF9, I have throttle curves configured as the TJ is clever enough to look at the throttle positions to try to look forward to your requirements thus keeping head speed as constant as possible. I also have some cyclic & collective to throttle mixes in place to aid with this forward looking algorithm.

As for sensor mounting, the mount should be put between the engine mount bolts and the engine. In other words the engine sits on the mount and the sensor mount is then situated on the top side of the engine mounting tabs with the bolts then going through the sensor mount, engine tabs and then into the mount. Hope that explains it, if not I can take a photo of my install tonight.

Where are you based ?

Rob

**chappers** · 05-05-2006, 09:13 PM

?

"I run a TJ pro on my rappy 50 with a FF9, I have throttle curves configured as the TJ is clever enough to look at the throttle positions to try to look forward to your requirements thus keeping head speed as constant as possible. I also have some cyclic & collective to throttle mixes in place to aid with this forward looking algorithm."

its not april 1st is it?

**Dedcalm** · 05-05-2006, 11:57 PM

No its the 5th of May... for another 7 minutes.

I take it you you dont believe/understand how the TJ works then... it does not just look at the rpm, at least if you believe the information about them.
I dont see any reason why the unit would not look at the throttle position to judge the impending load, obviously only a fraction of a second but thats also I guess why they recommend a fast servo. As the aim is to try to keep the rpm constant this would allow the throttle to be just ahead of pitch/cyclic demand.

I have recently upgraded from a 3001 to a 9254 so when I next fly it I will know

possibly.

Rob

**sparky** · 06-05-2006, 07:28 AM

hi,

if you could send me a pic of you tj pro install that would be great.

im based in reddditch worcester but i dont drive so thats why im teaching myself to fly.

i got a steady hover after 2 tanks with the training gear on then i took that off and just hovered without it. 3 tanks in total. a few sessions on the truflite sim before helped loads. i just cant fly around on the sim though.

so im guessing the tj mount sits on the outside of my shuttle frame with the engine mount bolts holding it on. the pic would clear things up though.

cheers
mark

**Dedcalm** · 06-05-2006, 09:10 AM

No problem I will see what I can sort out

Rob

**sparky** · 06-05-2006, 04:15 PM

cheers for that.

i have now heard that the csm revlock is much better as you dont need a tacho to set the correct head speed so i have put my tj pro on ebay to switch to the csm version.

but i see the mounting is the same so would still like a pic so i can see what im doing. just no sure which side of the frames the mount is meant to be.

cheers
mark

**Dedcalm** · 06-05-2006, 06:17 PM

You dont need a tacho to set up the TJ pro either....

As long as you know the gear ratio (e.g. Raptor 50 is 8.5:1) the you can calculate the value to use in the Tx.

Take a look at http://www.rchelicopterweb.com/TipsA...ttleJockey.xls for a spreadsheet that will calculate all the rpm's your heart could desire.

Think selling the TJ Pro without trying it is a bit drastic but thats up to you at the end of the day, I like mine and its never let me down yet.

Rob

**Dedcalm** · 06-05-2006, 06:24 PM

Take a look at the TJ instructions here,

http://www.modelavionics.com/docs/instructions.pdf

There is a nice photo of an engine on mount with the sensor in place which shows you how to mount it.

Do you not have a copy of the instructions ? Well now you have

One thing that I though I would mention is that the TJ Pro when configured to be controlled by the Tx (as I would expect with the FF9) is that you can have 3 modes for the governor, OFF, RPM 1 and RPM2. I have mine configured this way so I can have different head speeds for hovering and for circuit work. I dont believe (but could be wrong) that the CSM revlock cant do this, maybe thats why it is a cheaper device.

I notice recently that Model Avionics have changed their advice on the setup (they used to detail FF9 use!) and now say to use a tachometer... not the most helpfull statement in the world but the information is out there...

Rob

**sparky** · 07-05-2006, 02:59 PM

cool thanks for that.

the pic of the install really cleared things up.

i am going to take my throttle jockey off ebay and use it instead of getting the csm version.

now am going to be posting another help question with regards to my csm gyro set up with the ff9 tx.

thanks for all your help

mark

**Dedcalm** · 07-05-2006, 03:58 PM

If you have any further queries regarding the TJ install or setup please let me know. I used to have a CSM ICG400 with Hitec 5925 servo but I now fly a Futaba 401 with 9254 servo. I used to experience drift with the ICG400 but no longer have that problem with the 401.
I seem to remember that the setup of the CSM gyro was simple though

Rob

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