Wonder if the Spark uses the DJI Snail Racing Propulsion Motors?  Anyone know?

That would be interesting.

I believe they are not the same. Quick look at the ESC used for the snail system could give a good hunch base on the battery used for the spark. Maybe they are an iteration of the snail system. Even by comparing flight times they are quite different systems.  

No, it's not the same tuned propulsion.

i have dji snail motors... what happens if i connect them to spark by removing the current ones? As far as i see, esc is under the motor in spark and i can directly connect snail motors. By using 6 or 7" props (may be extending the arms a little) am i going to able to fly with long flight time ? is this a good idea or not ?

ekolik3 Posted at 2017-8-10 14:06
i have dji snail motors... what happens if i connect them to spark by removing the current ones? As far as i see, esc is under the motor in spark and i can directly connect snail motors. By using 6 or 7" props (may be extending the arms a little) am i going to able to fly with long flight time ? is this a good idea or not ?

Why don't you try it out and let us know how it works.

it is just a plan, what do you think about its feasibility?

ekolik3 Posted at 2017-8-10 14:06
i have dji snail motors... what happens if i connect them to spark by removing the current ones? As far as i see, esc is under the motor in spark and i can directly connect snail motors. By using 6 or 7" props (may be extending the arms a little) am i going to able to fly with long flight time ? is this a good idea or not ?

Well, you will have to re-program the flight computer as the extended arms will affect flight characteristics.

is it possible to program flight computer ? i actually can not decide whether it is a reasonable attempt or not

ekolik3 Posted at 2017-8-11 09:49
is it possible to program flight computer ? i actually can not decide whether it is a reasonable attempt or not

I think I read somewhere that the Spark OS was an Android variant. I would think someone that is fluent in Android would be able to hack it.