csc
Senior Heliman
Location: Nampa, ID
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| Clark,
I have been thinking of converting a Shuttle that I have hanging around not doing anything and ran across this thread. Nice job on your conversion! I liked it so much that I just ordered the motor mount that you show in your pics. A couple of ??? though, did you change the pinion gear? If so, to what number of teeth? Where do you get Kontronic motors? Do you know what other motors that might work? How do you connect the motor to the clutch/fan assembly? Is there a special adapter that you need? Can you do aerobatics with your shuttle (not hard 3D)? Sorry for all the ??? but this something I have been thinking about for a while now. TIA for your responses!
FB
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Hey FB,
Thanks for the comments!
First, nope, can't change the pinion, you're stuck with the stock unit. So, for calculations, your gear ratio is 9.625:1. An adapter for your clutch comes with the motor mount. The mount is actually very nice and works perfect. Being that you will be using the stock clutch, you won't need to use the soft start function in the ESC. It will soft start all on it's own. Works like a champ.
I selected the Kontronik Tango 45-08 Motor solely based on others that have done this conversion. I am sure there are other motors that you could use but I stuck with what I was sure would work. Being that these motors are expensive, I didn't really want to experiment and they are very good, you won't be disappointed. Their reports were very approving of the motor specifically for this purpose and some were running 6s (3s x 2) and others 8s (4s x 2). They were attaching the batteries to the outside of the frames, which I did not want to do.
Initially, it was my intention to run 8s but I couldn't find an 8s battery to fit the frames they way I wanted it to and I really did not want to run two batteries at at time (4s x 2). I found the Thunder Power TP4600 6SXL battery (Size mm [LxWxH] 195 x 46 x 36 - Weight (grams) 671) which fits within the frames perfectly.
I think the 45-08 motor's sweet spot would have been with an 8s setup but it runs fine on 6s. There is lots of power in this motor. However, based on my real world experience of 50 or so flights on this setup, I am going to try a Tango 45-10 motor in my other Shuttle RG that I am converting right now. It has a higher Kv which will yield a little higher RPM on the 6s setup for a given throttle setting.
You want to hit your target headspeed (I use 1550rpm) at approx. 75 percent throttle. My 45-08 (on 6s) isn't hitting the 1550 until about 88 percent throttle. However, I am dragging around a Roto-Pod training gear worth 1.3 lbs too. Once I can lose this, the performance will rise considerably. At any rate, this is not a problem with my flying style (hovering, basic circuits) but I would like a little more headroom for the governor. So, I think the 45-10 will be perfect on 6s in this application.
Being that I am still learning, I cannot do aerobatics yet, but there is more power available in this motor/setup than with the OS .32 I had before. So, I don't see any reason this baby can't do anything it's fueled counterpart could.
Tower Hobbies sells the Kontronik Motors 45-08. If you wait for one of their sales where you can take $30 off any order over ~$225, you can get a good deal on them. That is what I did. Every penny helps, lol.
Now that I have my setup dialed-in, I run a timer and set it for 9 minutes. This keeps me well within the 80 percent rule so my packs will last. Again, once I lose the training gear, flight-time and performance will rise significantly.
Hope this helps, let me know if you have any other questions. PM if you prefer. Let me say this is not a cheap solution but it is really nice once done and performs great. Last, it is clean!
Clark
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Shuttle RG
Shuttle RG/M
eShuttle |
Anyways, Found this great combo deal on a Hyperion Motor and ESC for $199 !! 
