Ok verdict in on the prop and speed

[skyhighdiver]

After a long day off and many runs of the MG I can report back to those than want to hear
I am running a stock MG motor and esc, I am running a Kinetic offset as of today and I love it! Had most of the wa wa tuned out prior but the offset cleared it all
2-Gens ace 5300mah 2S1P 7.4V 30C Lipo battery packs, 5.5mm bullets on everything motor esc batteries

PB 1.6 x 2.5 SS 27.5 max speed
X642 32.8 max speed
M445 36.8 max speed
All are run with the back of batteries 1.25 inches forward of the rear of stock battery tray
This makes the boat a little light in the front but if I run them all the way forward it is very slow out of the hole
My strut is about 1/8 below the flush level a little lower gives me better take of but we lose out in top speed

I averaged 9.5 minutes run time out of each battery set, this was a all out 9.5 minute run the prop size seemed to make no difference on the total battery time at all
The esc cut out within seconds of each prop
I do not have a temp gauge but nothing seemed overly hot
But after running 3 sets of batteries through with only time to change prop and battery the heat shrink was easy to pull on and off on the esc plugs but able to touch everything

Have 4 Turnigy nano-tech 4500mah 4S 45~90C Lipo Pac and a 447 detonged prop on the way so the next round of test will be done with 4s
Ill add the 447 to the list at the end as unsure if the esc will hold up to the 447 anyone who uses or has used one please reply here with you outcome

[dana]

27 sounds really slow, even for stock i would think 35 more likely "shrug"

[skyhighdiver]

The geko in the geico never lies

[skyhighdiver]

if the esc will hold up to the 447 anyone who uses or has used one please reply here with you outcome[/QUOTE] no one using this prop

[dana]

where is your strut depth?

[dana]

447 i wouldnt try. jmo

[CHIEFY_44]

i agree with dana them speeds seem real slow everything standard i was getting 37mph with a grim 42x55 prop, imo i also would not go to the 447 i would slap a m445 ans bump the timing up to 11.25 and if its still not fast enuff go all out bang a leopard 4074 in with a t-180 esc with a m445 and you will see the low to mid fifties no problem. Another thing to do is get a epoxy hatch from tiqueman as the original is not very strong

[d.a.v.e]

Your speeds line up pretty well with what I was seeing on my GPS.

[CHIEFY_44]

as a matter of interest what is your timing set at low or high ????

[d.a.v.e]

Mine was set on high. What are you using to clock yours with?

[CHIEFY_44]

i have 2 ways, one is eagletree and the other is a small garmin and they both come out the same speed which was 37.3 mph. the specs for the boat at that time is as follows:- proboat electrics motor and esc timing set at high turnigy nano tech 5000mah 45-90c in 2s2p with a grim 42x55 prop sharpened and balanced

[skyhighdiver]

have a 445 but cant change timing other than high or low as im using stock esc and program card I will try it on high to see what diff that makes
strut as stated is about 1/8 below flush with bottom seems best there any higher it cavitates even worse on take off, lower was better for getting going but lowed top speed by about 1-1.5mph

[dana]

have a 445 but cant change timing other than high or low as im using stock esc and program card .
strut as stated is about 1/8 below flush with bottom seems best there any highe rit cavitates even worse on take off, lower was better for getting going but lowed top speed by about 1-1.5mph

I dont own an MG but 1/8 below sounds too low for any cat. My cat strut is about 4mm above sponson bottoms.

[CHIEFY_44]

strut should be level with the bottom of sponsons thats where i run mine with a m445

[CHIEFY_44]

skyhighdiver thats how i had mine set with a grim42x55 prop and was getting 37.3