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View Full Version : Traxxas Spartan Prop Selection?


djmaincheese
01-31-2011, 12:35 AM
I posted this in the Prop Forum Section but it might be better suited here..

You may have seen that I upgraded the Motor and ESC in my Traxxas Spartan
I installed the Leopard 3674 1300KV Motor and Sea King 120A ESC,

I tried the running the Grim Racer 42mm X 55mm but she seems kinda sluggish. I switched back to the stock 42mm X 59mm and it was a little better.

Im wondering what you guys think I should possibly try, granted it may take a couple to find the sweet spot but at least I have a motor and ESC that can push this 36" hull with no heat issues.
Should I try the Prather 225 or the Octura X445, or something a little bigger?
Any help would be greatly appreciated.

'Im running 2 Venom 3S2P 6400mah Batteries so they are a bit heavier than the normal 5000mah lipo's out there that most people seem to be running.

Here is a short clip of some passes....., until i get a gps or radar gun I have no idea but I know it's not even pushing the 50mph mark

http://www.youtube.com/watch?v=thYgeQ_dpfI
Make-a-Wake
01-31-2011, 12:54 AM
Did you temp it after a good run????

Try an x442.....or an x640
Brushless55
01-31-2011, 06:40 PM
Did you temp it after a good run????

Try an x442.....or an x640

I think he is after something bigger :spy:
his motor and esc were only 63-64*
Make-a-Wake
01-31-2011, 06:50 PM
Yeah, I was trying to interperet what sluggish meant. The x640 actually has more total pitch than an x445 and I thought it may work better as wobbly as the Spartan is, more thrust, less diameter.
Brushless55
01-31-2011, 06:55 PM
It took me a while to get what that ment to..
Rumdog
01-31-2011, 09:26 PM
36" boat = more diameter needed. I'd be worried about the 120 amp esc though.
Make-a-Wake
01-31-2011, 09:30 PM
For more diameter, a 445 would be a step up but I'd try the M series
Brushless55
01-31-2011, 10:32 PM
36" boat = more diameter needed. I'd be worried about the 120 amp esc though.

I think right now he is only pulling about 30amps :smile:
djmaincheese
02-01-2011, 03:02 AM
Im going to order the Octura M445 and the Prather S225, hopefully get them in time for the weekend :)
Make-a-Wake
02-01-2011, 07:55 AM
The S225 is ALOT of prop...................almost 47mm and aggressive pitch................it's too much prop in my opinion............try the M445 first.
Brushless55
02-01-2011, 09:30 AM
Im going to order the Octura M445 and the Prather S225, hopefully get them in time for the weekend :)

Oh man! :rockon2:
tomjr
03-10-2011, 02:00 PM
Must the prop be balanced and sharpen ?
I can see there is a big difference in price....
Can we just use the normal not balanced not sharpen props ?
Please advice
stjupau
03-10-2011, 07:40 PM
Must the prop be balanced and sharpen ?
I can see there is a big difference in price....
Can we just use the normal not balanced not sharpen props ?
Please advice

I would definitely have the prop balanced and sharpen, for peek performance:thumbup1: and minimum stress on your "Drive System" (Motor, Bearings, and Flex cable).