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[luke1993]

hi
currently I have  2 x 600 motors on 2.5-1 belt drives in my trent
I can only run them on 6v as I have 2 x hunter 6v escs the motors are rated to run at 7.2v
I run them on 2 x 6v 3700 nimh batteries the question I would like to know is as I can only run at 6v due to the speed controllers is,
would I get better speed making them direct drive and taking away the belt drives ?
the speed I would say is not to bad but feel it should have a bit more speed .
I was going to put higher rated esc to run more volts but the hunter escs seem superb
any advice appreciated
cheers   

[john44]

what size props are you using? they may be too big for direct drive from
your 600 size motors.

john

[luke1993]

35mm 4 blade props
cheers

[luke1993]

sorry just checked there 45 mm 4 blade
cheers

[john44]

Hi Luke, I don,t know what type of 600 motors you are using, ECO,Turbo,etc.
but I think the 45mm props are too big for direct drive from a 600 motor.
I will be corrected if I am wrong but I don,t think I am.
You would be better fitting 800,850s if you have room but then you loose out
on running time.

john

[luke1993]

I don't know about the motors just know there 600s nothing special
I was going to change them to graupner speed 600 7.2v motors  ?
cheers

[john44]

Doing it that way you can at least keep the same set up
but if your old motors are higher revving than the Graupner
your boat will run slower.

[luke1993]

was thinking of the speed 600 race motors 7.2v ones there 22000 revs I am certain mine are not that powerfull .
cheers

[rnli12]

Hi Luke,
On mine I had 2 x ECO 600s direct drive @ 8.4v on 45mm props with action electronics gear, came onto the plane nicely and had about 20 mins.
On the Tamar I have dropped to 35mm props, 2 x ECO 600 direct drive.
Regards,
Rich

[pipster]

Hi Luke,
 
To add my twopenn'orth, I'm using 600 Ecos direct drive on 9.6v with 35mm props.  I was using 40mm props but dropping prop size increased run times with no appreciable drop in speed.  However, the motors are hot after a run, so water cooling would not be a bad idea.
Phil

[luke1993]

cheers for answers but I see everyone using more than my 6v
ill have to have a think and see if its worth my while to get rid of my trusty 6v hunter sytems escs
and get some 12v mtroniks or something so I can up my voltage , spoken to hunter few weeks ago and he said do not put more than 6v through my escs
so have to get some costs me thinks     
cheers