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Old Oct 05, 2012, 05:03 AM
Let me Fly please :^)
Paul-RC's Avatar
Montreal,Canada
Joined Mar 2003
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Originally Posted by efflux RC View Post
I like playing with dollys.

This one has a steerable nose wheel, and it own rx, bound to the tx, on rudder channel.
That is amazing! good idea for the RX control .
Mine looks very close to it but it was setup as a tail drager with a free wheeling tail wheel.
It did work well but I like your idea much better.
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Old Oct 06, 2012, 02:13 PM
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United States, MO, Warrensburg
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Originally Posted by Prof100 View Post
Whalleyboy,

Looks as fast as mine on a 5S. Yes, the weight does add up. I am going to use a Sapac MB1 and fan on 4S and it puts out about 1100 watts. On a 5S about 1800 watts.

I just ordered a 100 amp Hobbywing Platinum Pro which is right at the max amps of the SAPAC MB1 on a 5S.
I have an MB-1 fan/motor sitting around I think I might use if I buy the airframe only version. I dont think the MB-1 comes with the motor mounting tabs attached. Just curious how you were going to mount the motor? Hot glue?
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Old Oct 06, 2012, 04:36 PM
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Canton, Michigan USA
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Originally Posted by Jetnfast View Post
I have an MB-1 fan/motor sitting around I think I might use if I buy the airframe only version. I dont think the MB-1 comes with the motor mounting tabs attached. Just curious how you were going to mount the motor? Hot glue?
I would make the tabs, JBWELD in place and screw it in. I have CF the right thickness. I have done it before.
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Old Oct 06, 2012, 07:08 PM
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United States, MO, Warrensburg
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Originally Posted by Prof100 View Post
I would make the tabs, JBWELD in place and screw it in. I have CF the right thickness. I have done it before.
Sound good, I figured it was something along the lines. I just ordered my airframe only version, so I guess I got some reading to do!
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Old Oct 06, 2012, 07:34 PM
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Originally Posted by Jetnfast View Post
Sound good, I figured it was something along the lines. I just ordered my airframe only version, so I guess I got some reading to do!
Here is a Sapac fan with tabs added for a Squall installation.
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Last edited by Prof100; Oct 06, 2012 at 07:41 PM.
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Old Oct 06, 2012, 08:09 PM
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Thanks prof, looks good! That JB weld stuff is pretty strong I guess? I have never used it, but the install pics give me a good idea of what to expect if I go with the MB-1.

The MB-1 is good for around 1100w if I remember correctly? It definitely pushes my Sapac T-45 around with authority, much better than my comparable eflite F-86 which is a dog on takeoff. The stock eflite setup is around 800w, so that should be a nice boost just by using the MB-1.
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Old Oct 06, 2012, 08:47 PM
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Originally Posted by Jetnfast View Post
Thanks prof, looks good! That JB weld stuff is pretty strong I guess? I have never used it, but the install pics give me a good idea of what to expect if I go with the MB-1.

The MB-1 is good for around 1100w if I remember correctly? It definitely pushes my Sapac T-45 around with authority, much better than my comparable eflite F-86 which is a dog on takeoff. The stock eflite setup is around 800w, so that should be a nice boost just by using the MB-1.
KV on the stock Habu and MB1 are the same. The difference is the Sapac Fan.
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Old Oct 06, 2012, 09:18 PM
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Originally Posted by Prof100 View Post
KV on the stock Habu and MB1 are the same. The difference is the Sapac Fan.

Sounds good.
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Old Oct 06, 2012, 09:24 PM
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Canton, Michigan USA
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Originally Posted by Jetnfast View Post
Sounds good.
Let's say the two motor's KV is the same. The two motors are inherently different. The stock is an inrunner and the MB1 is an outrunner.

Consider balancing the fan on your prop balancer. It will make more power and preserve the bearings.
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Old Oct 10, 2012, 08:08 PM
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Canada, BC, Surrey
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I finally got my first CS 70mm 10 blade so I stuffed it into my H2 today, mounted and balanced with the edfhobbies 2950kv motor.

I so badly wanted to slip some milar into the exit duct but I couldnt figure out how. The i.d. of the duct is smaller than o.d. of the fan. So basically I couldn't open the rolled milar tube wide enough to tape around the fan. It appears that I would need to bore out the foam that makes up the duct so that the roll can expand enough to fit the fan.
I went without it for now so I could run up some numbers on the fan in the jet.

With the three various pack sizes I had on hand here is my results:

5s 3300mAh 30C
15.59vm
106.9ap
1787wp
3 min fly time


4s 3500mAh 35C
13.11vm
82.96ap
1130wp
2.52 min fly time

Auw
5s 2200 1.6kg / 3lb9oz
5s 3300 1.8kg / 3lb13oz
* 22grams in the tail needed to balance
4s 3500 1.63kg / 3lb9oz
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Old Oct 10, 2012, 08:11 PM
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Here is what I am looking at when trying to slip in some milar
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I think maybe I can ream a little more foam out so it's tapered to the o.d. of the fan shroud. Maybe even cut slits into the cone to fit over the fan. Then tape it all up?
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Old Oct 10, 2012, 08:29 PM
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A soup can wrapped with sandpaper or a "3M Flap wheel" may help.
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Old Oct 10, 2012, 08:36 PM
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Originally Posted by efflux RC View Post
A soup can wrapped with sandpaper or a "3M Flap wheel" may help.
Thanks Gary, I will try that.
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Old Oct 10, 2012, 08:58 PM
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WhalleyBoy - what motor and shroud are you running with that CS fan?
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Old Oct 10, 2012, 09:25 PM
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Im using the Edfhobbies 2950kv motor

http://edfhobbies.com/index.php?rout...product_id=176

I paid the extra bucks for them to mount and balance the combo for me so that is was a drop in upgrade without fuss. So it is the Changesun shroud thats being used now.
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