Tweet
I want to order the cf45 prop but I`m confused. Do I order the grp2317.45? If not what is the product order #.
-
-
that is the correct part number...though considering the price and the cost of shipping...you might want to consider adding a 2317.42 & a 2317.48 as well(assuming that you are not ordering something else :))Still waiting for my boat to come in.it came in
Comment
-
Thanks Rex.
Comment
-
Hi Rex! I want to know how good is the cf42 and what is the equivalent to that of the metal props, let's say the octura props. I've got cf45's and cf48's. And they're really good.Comment
-
I would also order a 40mm one! depends on you setup!
x442 is exactly the same as K42 or DD42, remember that CF42 doesn't really mean anything precise, the CF (carbon filled) serie from Graupner has 3 differents "sub-serie"
K (p=1.4xD) M4 threaded
S (p=1.6xD) M4 threaded
DD (p=1.4xD) 3/16 hub boreComment
-
while they are not quite the same as the octura x4xx series(they'll be a tad slower if for no other reason than blade flex), they're close enough to give you a good idea as to how the boat would perfom with an octura prop. the cf 'k42' (and k-40) will be slower than the stock prop(good for icky water or those times when you really don't want to have to retrieve the boat).
note
the octura 440/3blade will give nearly the same performance as the stock prop(quicker off the line w/ a bit more top end
).
Still waiting for my boat to come in.it came inComment
-
This is something I just don't understand. I'm still dialing-in my Campbell hydro with the SV-27 power system and 4S1P. With an X438, my motor temperatures come in at 145º. That is hotter than I would like. With an X637, motor temps are 135º and speeds are around 42 mph. Mind you, I am still working on the setup, but the hull is running very loose at this point.
How can a V-hull push a bigger prop than the hydro at similar speeds without overheating?
Maybe I need to do some more work on my setup.
A nation of sheep breeds a government of wolvesComment
-
Strange - your results are not consistent with my experience...maybe you're over-revving...? how's the water-cooling flow, can you easily blow through the system?This is something I just don't understand. I'm still dialing-in my Campbell hydro with the SV-27 power system and 4S1P. With an X438, my motor temperatures come in at 145º. That is hotter than I would like. With an X637, motor temps are 135º and speeds are around 42 mph. Mind you, I am still working on the setup, but the hull is running very loose at this point.
How can a V-hull push a bigger prop than the hydro at similar speeds without overheating? Maybe I need to do some more work on my setup.
I run an SV ESC and Motor in my LSH (Aussie Cabover) with a 45-47mm prop for 10 laps and rarely see temps over 120, but blockage in my cooling takes my temps to 135-140.
I run the SV system in my SV27, my Topspeed2, my LSH, as well as my 1/10 scale hydro. All typically run props between 42 and 45 mm in races and the LSH is the only boat that gets any component over 110 (unless I pre-warm my lipos, which I rarely do). All boats run between 35-42 mph...guessing, but all very comparable and competitive.Comment
-
I have plenty of water flow with no restrictions, that is not the issue. One of the guys from Colorado runs this same hull/motor arrangement on an X438 and has about equal speeds as mine. I have been raising the prop, and that seems to get me going a bit faster and a bit cooler. I think I will continue to pull the strut up. This is counter-intuative to the normal "prop even with the sponson bottom" philosophy, but it seems to be working for me. Obviously, more testing is in order. If I can get temps down to the 120º range, I'll try an x640 that has been cut down to 37 mm (on the order of an X737).
By the way, all the props I am testing are de-tongued, which should help reduce the load on the motor.A nation of sheep breeds a government of wolvesComment
-
-
so far the 440-3 is fastest on my boat,, i have tested the CF45// x442 x440 2 blade the others i want to try are not in stock here,,,Comment
-
CF 45 works really well for me. The 48 is a bit much but fun to jump around with o ya and show off
My vote is the CF 45 all around.
Comment
Comment