Discussion Submicro Walkera 4#3 FP - 4 channel piccoz sized heli!

[manoftoy]

Originally Posted by barney 69

Thanks a lot , i think i will try this mod.

Can you tell if tail motor give enouth power for the 2 main motor power ?

Bye

Yes it does, but I never tried it with the stock tail boom, as I took a longer tail boom (1,5 cm longer than the stock one) to support the tail motor power. This works excellent til now...

I use the 703 TX (walkera), where I can programme a negative expo rate for the rudder, this is helpful for flying narrow circles very easy.

Happy modding!

[gravityKills]

Originally Posted by johnIn2SonAZ

when i first got my 4#3 i was just trying to hover it inches off the ground and found it almost impossible to fly. i did this for hours at a time. then i just got daring and nailed the throttle and jumped it to shoulder height and found it very very easy to fly. it's so small the in ground effect it is very unstable.
once it is 4ft. or so off the ground it fly's very well.
just a pointer.
-john

Confirmed. Once you get away from the ground, it gets oh so much easier, but also breaks easier... Have patience, learn to hover tail-in with trims off, learn to trim then the sky is the limit

I got my hands on a 4#3 with servo holes in the inner position today, and didn't like it at all. Now I must say that I fly my bigger EP 100s with flybar weights off, on other words, the typical stick travel for smooth indoor flying is about 1 mm in every direction. You get used to it, and it gives you the authority to save the day, when something nasty happens.

There are like 20 or 30 mods to this heli on this thread, but my next 4#3 (which is in the mail) will get a reinforced rotorhead into the spare parts box, maybe (only if needed!) the swashplate mod and that will be all for a while.

My current 4#3 is a beaten-up piece of junk, but I realized today that - given that both servos actually work, which happens occasionally - it hovers hands-off for five or six seconds, and that's enough.

[johnIn2SonAZ]

Originally Posted by shagrug

Hello All,
Tonight I've been test flying a 4#3 put together from parts only, and ran into a servo problem or two.
If you've ordered a replacement set of servos (like I did) and received a set with the short stubby control horn shown in photo (left, stock arm on right)....you will find the servo arm travel is also different, about half what it should be.
This is because these are not 4#3 repacement servos, but H05 glider servos, I learn today from a close inspection of each. I'm lucky enough to have a H05 handy to compare...and I never really noticed the difference in travel until today. I had thought only the arms were different.
Now I'm having to set this parts heli up with the control rod balls in the outermost holes rather than inner, to get enough proper swashplate movement. I just could not control it with balls in innermost holes.
Also worth noting, because of the lower/different gearing inside the servo, it does not respond near as fast.
End result is this 4#3 feels different when flying...I notice a good bit less responsive than stock. Now I have a really "tame" one.
I'm thinking others may be having the same problems with replacement servos-I think just replacing one of them on a heli would cause a mismatch (one quicker than the other). I've see a couple other people in this long thread mention building a 4#3 up from parts, and would like to know if they had this same issue?
Shag

thanks for mentioning that. i too have those servos but both had defective plugs. the ones i got from bphobbies were the wrong servos theywere p#HM-5G6-Z-19. the correct ones are HM-4#3-Z-24 Servos.
-john

[sketchaholic]

Originally Posted by shagrug

Hello All,
Tonight I've been test flying a 4#3 put together from parts only, and ran into a servo problem or two.
If you've ordered a replacement set of servos (like I did) and received a set with the short stubby control horn shown in photo (left, stock arm on right)....you will find the servo arm travel is also different, about half what it should be.
This is because these are not 4#3 repacement servos, but H05 glider servos, I learn today from a close inspection of each. I'm lucky enough to have a H05 handy to compare...and I never really noticed the difference in travel until today. I had thought only the arms were different.
Now I'm having to set this parts heli up with the control rod balls in the outermost holes rather than inner, to get enough proper swashplate movement. I just could not control it with balls in innermost holes.
Also worth noting, because of the lower/different gearing inside the servo, it does not respond near as fast.
End result is this 4#3 feels different when flying...I notice a good bit less responsive than stock. Now I have a really "tame" one.
I'm thinking others may be having the same problems with replacement servos-I think just replacing one of them on a heli would cause a mismatch (one quicker than the other). I've see a couple other people in this long thread mention building a 4#3 up from parts, and would like to know if they had this same issue?
Shag

Shag, that's also the servos they use for the 5#6/5G6 too. Perhaps you were accidentally sent the wrong ones?

oops, John beat me to it.

[sketchaholic]

On another note. I think I jumped the gun with the connectors. They are slightly better, but would be nice if they were as snug as the battery connectors. For some reason they also changed the flybar lengths. They are really long, measure in at 75mm. Just a rough measure since I didn't want to take off the flybar connectors. They also changed the flybar paddles. They made them wider with more surface area.

[johnIn2SonAZ]

Originally Posted by sketchaholic

On another note. I think I jumped the gun with the connectors. They are slightly better, but would be nice if they were as snug as the battery connectors. For some reason they also changed the flybar lengths. They are really long, measure in at 75mm. Just a rough measure since I didn't want to take off the flybar connectors. They also changed the flybar paddles. They made them wider with more surface area.

funny you say that quite a few posts back i said they shortened the flybar length. my recient order had the shorter length. my oem heli's had the longer 75mm rods.
look back and you'll see my post.
-john

[sketchaholic]

ah, I missed that.

[boren]

I tried 75mm the other day. I tried 55mm, stock was 65mm so I was curious how 75mm would do. It really damped the helicopter down, but response was too slow for my tastes. I didn't have the larger paddles though.

[shagrug]

Thanks to John and Sketch- you are both right.....I just dug the parts bag out of the trash and I see the servos are for the 5G6.
I'll have to order the right ones (again, BP fouled up my order) now that I understand my problem. I can wait having others to fly.
BTW- does the right 4#3 servo set include the right length arms?
Again thanks! Shag

[malcr001]

Originally Posted by sketchaholic

For some reason they also changed the flybar lengths. They are really long, measure in at 75mm. Just a rough measure since I didn't want to take off the flybar connectors. They also changed the flybar paddles. They made them wider with more surface area.

Have they done anything about the rotor head since thats the first thing they should of looked at on improving the heli.

[sketchaholic]

Just a few posts ago someone mentioned that the rotor heads are of softer material. I never took my older rotor head off until it was broken so I don't have any thing to compare too, but it sounds like it may have been improved by using plastic with more give.

[johnIn2SonAZ]

Originally Posted by shagrug

Thanks to John and Sketch- you are both right.....I just dug the parts bag out of the trash and I see the servos are for the 5G6.
I'll have to order the right ones (again, BP fouled up my order) now that I understand my problem. I can wait having others to fly.
BTW- does the right 4#3 servo set include the right length arms?
Again thanks! Shag

sure thing man! i just e-mailed bphobbies to tell them they are selling people the wrong parts. on their site i ordered the right part but they combine 3 different servos togather and send just one-the wrong one for the 4#3!
if you order again from them who knows if they will send the right part or not??
-john

[boren]

This is a normal problem with bphobbies. Their 5g6 parts are the same way, and I've emailed them about it twice. They list some 5#6 parts as 5g6 parts. I guess they are trying to save stocking more things? For some parts it's ok, for others it's plain wrong and some really annoying.

Examples:

1. 5#6 skids do NOT work on a 5g6

2. The 5#6 flybar does not include the linkage, the 5g6 one does. If you order a 5g6 flybar from everywhere you get enough to replace the one you lost. If you order from bphobbies make sure to add on the linkage pack too! ($4 more too)

3. bearing set for the 5g6 contains an extra bearing.

4. Gear sets contain bearings in the 5g6

etc

[shagrug]

Right- I just took a long look at my recent order form from BP Hobbies, along with the website......they list the servos to fit all three helis. I don't think they know there's a difference. (yet)
I've e-mailed them too, and will see if they respond.
Anyone know who does have the right servos in stock?
Thanks yet again,
Shag

[jasonkc25]

I feel like a living billboard for rotorfever.com.

Regardless, it looks like Sketch as them in at www.rotorfever.com.

J