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Soccerjay · 02-27-2014, 02:34 PM

I want to get the best tail authority on a wild bl nano. The kit is from AD and is coming in monday....so what is the longest i should go for the tail boom and main blades???

I know of the lynx 95mm but would any longer be worse and cause bogging?

And ive heard of 125-130mm tail is good but is longer going to help or hurt for hard 3d flight.... Ive got a 2ft cf rod i can cut down to whatever ideal length to eliminate tail kicks.

Sent from my Goblin 125 using SAB

Soccerjay · 02-27-2014, 02:50 PM

Quote:

Originally Posted by Soccerjay

I want to get the best tail authority on a wild bl nano. The kit is from AD and is coming in monday....so what is the longest i should go for the tail boom and main blades???

I know of the lynx 95mm but would any longer be worse and cause bogging?

And ive heard of 125-130mm tail is good but is longer going to help or hurt for hard 3d flight.... Ive got a 2ft cf rod i can cut down to whatever ideal length to eliminate tail kicks.

I also saw one guy have 134mm from the frame to motor mount....not including the part within each part respectively....im not sure around 145mm would be all that good???

Sent from my Goblin 125 using SAB

Sent from my Goblin 125 using SAB

JEBSi · 02-27-2014, 06:15 PM

Basically you want to keep the center of gravity at the mainshaft. You can check the COG by holding the top canopy pins with the battery installed and see if it tilts forward or backwards. It should be level which means that it is balanced.

If you vary the length of the tail boom it will change the COG.

A good mechanical setup will cause minimal tail kick, like a new mainshaft with freshly oiled bearings. A new tail motor or even a 7mm tail motor with longer tail blades will probably help the most for tail kick on pitch pumps. Some use a v-curve for the throttle. On a side note...I like to set my rudder travel to 150% which makes it rotate faster. I also set my throttle curve to 87% which seemed to work best for my wild.

Have fun!

ToddMcF2002 · 02-28-2014, 07:05 AM

Just FYI the Lynx stretch tail isn't 95mm, that is the measurement of the Lynx Stretch main Blades. The Lynx Stretch solid boom is identical in length to the hollow MCPX V2 tail. I believe it is +15mm compared to the stock Nano boom.

That puts it at about 122mm (stock is 107mm). If you use staggered small sections of shrink tubing to hold the wires on the solid boom like I did swapping out the carbon fiber portion of the boom assembly takes about 30 seconds. The shrink tubing slides on and off even fully shrunk. So you can easily try a 135-140mm and work your way back to 122mm if you have to.

Your motor is going to be way more powerful than mine so I'd start at 140mm and work backwards.

Soccerjay · 02-28-2014, 07:12 AM

Quote:

Originally Posted by ToddMcF2002

Just FYI the Lynx stretch tail isn't 95mm, that is the measurement of the Lynx Stretch main Blades. The Lynx Stretch solid boom is identical in length to the hollow MCPX V2 tail. I believe it is +15mm compared to the stock Nano boom.

That puts it at about 122mm (stock is 107mm). If you use staggered small sections of shrink tubing to hold the wires on the solid boom like I did swapping out the carbon fiber portion of the boom assembly takes about 30 seconds. The shrink tubing slides on and off even fully shrunk. So you can easily try a 135-140mm and work your way back to 122mm if you have to.

Your motor is going to be way more powerful than mine so I'd start at 140mm and work backwards.

Yah i was referring to blades at 95mm

I have a spare mcpx boom I'll try and if i think its worth it i'll try starting at 140 and slowly going backwards until i like it...

Sent from my Goblin 125 using SAB

Slack · 03-05-2014, 11:35 AM

Quote:

Originally Posted by Soccerjay

Yah i was referring to blades at 95mm

Sent from my Goblin 125 using SAB

Increasing the main blade length to 95mm would degrade tail authority further, would it not?

Soccerjay · 03-05-2014, 11:43 AM

Quote:

Originally Posted by Slack

Increasing the main blade length to 95mm would degrade tail authority further, would it not?

Maybe, maybe not. I have the stock blades with a 135mm tail boom and the tail holds pretty well on indoor pitch pumps inside at 100% for a little while but I'll have to 3d test it outside...

Sent from my Goblin 125 using SAB

JonJet · 03-12-2014, 06:24 PM

I simply use the stock mCPX tail on the Nano CPX...

I measure 130mm from the end of the tail motor to the front of the boom

I've tried the extended mCPX boom and didn't think much of it...although you could use it and cut it down to get a solid tail boom

NCcraig · 03-12-2014, 06:55 PM

The stock mCPX tail boom, the boom itself, is 125mm.

JonJet · 03-12-2014, 07:09 PM

Quote:

Originally Posted by NCcraig

The stock mCPX tail boom, the boom itself, is 125mm.

+1

02-27-2014, 02:34 PM	#1 (permalink)
Soccerjay Registered Users Join Date: Jun 2013	Longest i can stretch a nano cpx wild I want to get the best tail authority on a wild bl nano. The kit is from AD and is coming in monday....so what is the longest i should go for the tail boom and main blades??? I know of the lynx 95mm but would any longer be worse and cause bogging? And ive heard of 125-130mm tail is good but is longer going to help or hurt for hard 3d flight.... Ive got a 2ft cf rod i can cut down to whatever ideal length to eliminate tail kicks. Sent from my Goblin 125 using SAB __________________ "I fly because it releases my mind from the tyranny of petty things." Jay • Helifreak number: 189,781

02-27-2014, 06:15 PM	#3 (permalink)
JEBSi Registered Users My HF Map location Join Date: Feb 2013	Basically you want to keep the center of gravity at the mainshaft. You can check the COG by holding the top canopy pins with the battery installed and see if it tilts forward or backwards. It should be level which means that it is balanced. If you vary the length of the tail boom it will change the COG. A good mechanical setup will cause minimal tail kick, like a new mainshaft with freshly oiled bearings. A new tail motor or even a 7mm tail motor with longer tail blades will probably help the most for tail kick on pitch pumps. Some use a v-curve for the throttle. On a side note...I like to set my rudder travel to 150% which makes it rotate faster. I also set my throttle curve to 87% which seemed to work best for my wild. Have fun! __________________ Get high on a Chopper! Do it inverted!

03-12-2014, 06:24 PM	#8 (permalink)
JonJet Registered Users Join Date: Feb 2013 Location: Fargo ND (Home of the NDSU Thundering Herd)	I simply use the stock mCPX tail on the Nano CPX... I measure 130mm from the end of the tail motor to the front of the boom I've tried the extended mCPX boom and didn't think much of it...although you could use it and cut it down to get a solid tail boom Attached Thumbnails

03-12-2014, 06:55 PM	#9 (permalink)
NCcraig Registered Users Join Date: Mar 2011	The stock mCPX tail boom, the boom itself, is 125mm. __________________ Team Newb pilot All my helis and quads were lost in a tragic boating accident.

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02-28-2014, 07:05 AM	#4 (permalink)
ToddMcF2002 Registered Users Join Date: Sep 2013	Just FYI the Lynx stretch tail isn't 95mm, that is the measurement of the Lynx Stretch main Blades. The Lynx Stretch solid boom is identical in length to the hollow MCPX V2 tail. I believe it is +15mm compared to the stock Nano boom. That puts it at about 122mm (stock is 107mm). If you use staggered small sections of shrink tubing to hold the wires on the solid boom like I did swapping out the carbon fiber portion of the boom assembly takes about 30 seconds. The shrink tubing slides on and off even fully shrunk. So you can easily try a 135-140mm and work your way back to 122mm if you have to. Your motor is going to be way more powerful than mine so I'd start at 140mm and work backwards.

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