Modifying 3G for better performance - Page 2

tgilton · 10-13-2010, 09:22 AM

@akamullen - Will-do on the pics. May not get to the bench tonight, but my Rex 500 needs some other attention and I will open the 3G sensor when I get the heli fixed before the weekend.

ForceFedDSM · 10-13-2010, 12:17 PM

Quote:

Originally Posted by tgilton

I think this is a dandy idea! It basically increases the mass of each of the three sensors and eliminates some of the vibrational modes by coupling them into a new shape. I don't like the way they cantilever the little boards out there to vibrate like saxophone reeds. I will be doing a version of this tomorrow using sticky clay instead of RTV.

I see you mentioned sticky clay, maybe sugru or the diy oogoo would work well.

mikejr718 · 10-13-2010, 01:43 PM

Modified one sensor yesterday, flew it today. WOW I am able to run crazy high ail,ele and tail gains compared to before. This is on a velocity 50. In fact I copied the setup from the screenshots at the beginning of the thread, I gambled it would not wobble itself to shreds on spoolup. No bobbles or wobbles no matter how hard I tried. Flips form fff stoped abruptly and without bobble, tic tocs held fine. It was kind of windy and no matter how fast I got it going it did not wobble or hunt once.

HiroboFreak · 10-13-2010, 03:38 PM

Can somebody please post some pics.

mikejr718 · 10-13-2010, 03:45 PM

I have another sensor to do. I will try to post pics in the next few days. If you look back a few posts I show a diagram based on a prev posted picture. I just filled in the area circled-probably a little more than is circled. I tried to push the sealer into the gaps around the sensors. I did not modify the case at all. The glob of sealer was a little below level with the two vertical sensors. Just open the sensor, apply the sealant, put it back together. I let mine dry overnite. I used Hondabond sealer as I have experience working with it and know it is a quality product and when dry still stays kind of rubbery. Thank you Leon for sharing a good idea.

Just a note- I struggled to eliminate enough vibration to get my gains as seen on the interface above the mid 50's now they are both (ail-ele) in the mid 90's tail gain went fron 70 to 78 on my jr 9303

jondabear · 10-13-2010, 05:07 PM

Here goes nothing.

jondabear · 10-13-2010, 06:06 PM

Used some stuff I was familiar with. First mod was done to the sensors , to join all 3. Next mod was done to underside of enitre unit. (Electronis board) THIS IS JUST AN EXPERIMENT! I cannot say how it will reacte in the air with this extra mod.
I can neither confirm nor deny any improvement in performance at this time.

This is on my 600 which is in pieces and I shall have her up and rebuilt by tommorrow or fri. I shall also B testing the 3g blades.

If my theory is correct, I should have the best flying 3g system that Ive ever had.

If this WERX.............IM GNA B PISSED! LOL. just kidding.

Thanx and praise to OUR MAN LEON LUKE

for recommending this!

Peace!

Hangarace · 10-13-2010, 06:32 PM

I can't tell from the pictures what you did....... is it possible to get some clear closeups.

jondabear · 10-13-2010, 06:47 PM

The shiny CLEAR stuff is the adhesive. Basically just laid some over the horizontal sensor untill it touched the other two vertical sensors. In essence glueing all 3 together.

Then i laid this adhesive on the back side of the electronics board. This attached the bottom of the plastic housing to the board. I put the cover back on and screws back in and voila.

The stuff I am using can be found in electronics stores and dries to a dense , yet pliable form after curing. . Hope this helps.

BTW this is a SELF LEVELING adhesive and lays much like an epoxy but DOES NOT harden. It remains rubbery and soft. PEACE!

Leon Luke · 10-13-2010, 07:53 PM

Quote:

Originally Posted by mikejr718

I have another sensor to do. I will try to post pics in the next few days. If you look back a few posts I show a diagram based on a prev posted picture. I just filled in the area circled-probably a little more than is circled. I tried to push the sealer into the gaps around the sensors. I did not modify the case at all. The glob of sealer was a little below level with the two vertical sensors. Just open the sensor, apply the sealant, put it back together. I let mine dry overnite. I used Hondabond sealer as I have experience working with it and know it is a quality product and when dry still stays kind of rubbery. Thank you Leon for sharing a good idea.

Just a note- I struggled to eliminate enough vibration to get my gains as seen on the interface above the mid 50's now they are both (ail-ele) in the mid 90's tail gain went fron 70 to 78 on my jr 9303

Glad you noticed an improvement!

ForceFedDSM · 10-13-2010, 08:43 PM

I just glued my sensors with some shoe goo and epoxied the pins in the white connector on my 250. I'll check it out tomorrow if I have time to see how it improves.

Jondabear, I have a set of the 3G blades on my 600 and they made a huge difference. They fly great. I was going to get a set of them for my 700 but I won a set of curtis fbl 710's, they also fly great, but make the heli feel a little dopey. I might try a set of the edge 693's.

Canadian Man · 10-13-2010, 10:11 PM

I did the same thing as Jondabear with silicone on the sensors and on the underside of the board. I hope to fly a bit tommorow and will report back. After I type this I am going to set my settings up as per the first photos from leon luke.

Cheers!

Corrari · 10-14-2010, 01:01 AM

What about glueing a small cube of foam between all three sensors? Is ca glue no good?

Does it have to be a certain type of silicon? I am a plumber and have plenty of roof and gutter silicone.

mikejr718 · 10-14-2010, 07:51 AM

DO NOT USE CA GLUE!!!! The fumes from the glue curing and the fumes released afterward are very corrosive. Some mfg's of esc's and other small rc car electronics have a disclaimer in their warranty regarging this

The foam block may interfere with the alignment pins in the top of the case. With silicone they just push thru and imbed themselves.

acidla · 10-14-2010, 09:26 AM

Is it safe to use shoe goo on electronics?

jondabear · 10-14-2010, 05:34 PM

About to fly 700 w new mod. NOT gna change anything in the settings so that I have a true reference to look back at.

malc1 · 10-14-2010, 05:40 PM

A good idea that.

Looking forward to hearing the results.

Good clear photos?

Corrari · 10-14-2010, 05:53 PM

Does it have to be a certain type of silicon? I am a plumber and have roof and gutter silicon and bathroom silicon on hand.

jondabear · 10-14-2010, 06:16 PM

No pics or vid YET.

BUT..............Holy son of a CRA%!

This mod is AMAZING on my 700. Didnt change a thing!

Heres a quick run down, Feels MORE locked in, ALOT more locked in. Helped with Cyclic movements. I make an input and....its THERE!.
Even helped with my PITCH. Thought I was just runnung a rich motor and didnt have alot of punch. With this mod AND my heli running 180 f i now have morre punch out than ive ever experienced.

THIS might be our holy grail guys!

Weird what a good sensor will do when its not fighting vibes!

VERY VERY happy with my results. wish I had tried this a LONG time ago. PEACE!

:YeaBaby :

Corrari · 10-14-2010, 08:23 PM

Your making me jelous....I just need to know if it has to be a specific type of silicon.
As i have said, i have roof and gutter silicon galore.

10-13-2010, 09:22 AM	#21
tgilton Registered Users Join Date: Mar 2010 Location: Boise, ID	@akamullen - Will-do on the pics. May not get to the bench tonight, but my Rex 500 needs some other attention and I will open the 3G sensor when I get the heli fixed before the weekend. __________________ Compass 6HV (Beastx, JR8717/Futaba BLS251) Atom 550 (mini-VBar, Savox) Trex 450 (BeastX, MKS DS92s/DS95i) Trex 250 (3gx 410/MKS DS95i)

10-13-2010, 03:38 PM	#24
HiroboFreak Registered Users My HF Map location Join Date: Sep 2005 Location: Central Coast NSW Australia	Can somebody please post some pics. __________________ T-rex 700n VBar 5.3 Pro \| T-rex 700e V3 VBar 5.3 Pro To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. \| JR DSX9 Limited Team RCBits \| Team Lynx

10-13-2010, 05:07 PM	#26
jondabear Registered Users Join Date: Apr 2008 Location: San Antonio tx.	Here goes nothing. Attached Thumbnails

10-13-2010, 06:06 PM	#27
jondabear Registered Users Join Date: Apr 2008 Location: San Antonio tx.	Used some stuff I was familiar with. First mod was done to the sensors , to join all 3. Next mod was done to underside of enitre unit. (Electronis board) THIS IS JUST AN EXPERIMENT! I cannot say how it will reacte in the air with this extra mod. I can neither confirm nor deny any improvement in performance at this time. This is on my 600 which is in pieces and I shall have her up and rebuilt by tommorrow or fri. I shall also B testing the 3g blades. If my theory is correct, I should have the best flying 3g system that Ive ever had. If this WERX.............IM GNA B PISSED! LOL. just kidding. Thanx and praise to OUR MAN LEON LUKE for recommending this! Peace! Attached Thumbnails Last edited by jondabear; 10-13-2010 at 06:16 PM.. Reason: missing pic

10-13-2010, 06:32 PM	#28
Hangarace Registered Users My HF Map location Join Date: Oct 2005 Location: Southern Oregon Coast...and loving it	I can't tell from the pictures what you did....... is it possible to get some clear closeups. __________________ MA Whiplash-BeastX Fusion 50 3G FBL Trex 700E 3G FBL Trex 600E 3G FBL (#1) MD500E fun scale Trex 600E 3G Trex 450 SE V2 Trex 450 SE (Night Flyer) *AMA# 50163* To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

10-13-2010, 01:43 PM	#23
mikejr718 Registered Users Join Date: Feb 2008 Location: Omaha, NE	Modified one sensor yesterday, flew it today. WOW I am able to run crazy high ail,ele and tail gains compared to before. This is on a velocity 50. In fact I copied the setup from the screenshots at the beginning of the thread, I gambled it would not wobble itself to shreds on spoolup. No bobbles or wobbles no matter how hard I tried. Flips form fff stoped abruptly and without bobble, tic tocs held fine. It was kind of windy and no matter how fast I got it going it did not wobble or hunt once.

10-13-2010, 03:45 PM	#25
mikejr718 Registered Users Join Date: Feb 2008 Location: Omaha, NE	I have another sensor to do. I will try to post pics in the next few days. If you look back a few posts I show a diagram based on a prev posted picture. I just filled in the area circled-probably a little more than is circled. I tried to push the sealer into the gaps around the sensors. I did not modify the case at all. The glob of sealer was a little below level with the two vertical sensors. Just open the sensor, apply the sealant, put it back together. I let mine dry overnite. I used Hondabond sealer as I have experience working with it and know it is a quality product and when dry still stays kind of rubbery. Thank you Leon for sharing a good idea. Just a note- I struggled to eliminate enough vibration to get my gains as seen on the interface above the mid 50's now they are both (ail-ele) in the mid 90's tail gain went fron 70 to 78 on my jr 9303

10-13-2010, 06:47 PM	#29
jondabear Registered Users Join Date: Apr 2008 Location: San Antonio tx.	The shiny CLEAR stuff is the adhesive. Basically just laid some over the horizontal sensor untill it touched the other two vertical sensors. In essence glueing all 3 together. Then i laid this adhesive on the back side of the electronics board. This attached the bottom of the plastic housing to the board. I put the cover back on and screws back in and voila. The stuff I am using can be found in electronics stores and dries to a dense , yet pliable form after curing. . Hope this helps. BTW this is a SELF LEVELING adhesive and lays much like an epoxy but DOES NOT harden. It remains rubbery and soft. PEACE!

10-13-2010, 08:43 PM	#31
ForceFedDSM Registered Users Join Date: Aug 2008	I just glued my sensors with some shoe goo and epoxied the pins in the white connector on my 250. I'll check it out tomorrow if I have time to see how it improves. Jondabear, I have a set of the 3G blades on my 600 and they made a huge difference. They fly great. I was going to get a set of them for my 700 but I won a set of curtis fbl 710's, they also fly great, but make the heli feel a little dopey. I might try a set of the edge 693's.

10-13-2010, 10:11 PM	#32
Canadian Man Registered Users Join Date: Aug 2008 Location: Calgary, Canada	I did the same thing as Jondabear with silicone on the sensors and on the underside of the board. I hope to fly a bit tommorow and will report back. After I type this I am going to set my settings up as per the first photos from leon luke. Cheers! __________________ Trex 700 velocity 50 trex 450

10-14-2010, 01:01 AM	#33
Corrari Registered Users Join Date: Mar 2010 Location: Pahiatua, New Zealand	What about glueing a small cube of foam between all three sensors? Is ca glue no good? Does it have to be a certain type of silicon? I am a plumber and have plenty of roof and gutter silicone. __________________ Compass 6HV, TotalG, BLS251, DX7S. Kasama Srimok, Scorpion HK-4525-520KV, TotalG, BLS251, DX7S. ...and the rest...

10-14-2010, 07:51 AM	#34
mikejr718 Registered Users Join Date: Feb 2008 Location: Omaha, NE	DO NOT USE CA GLUE!!!! The fumes from the glue curing and the fumes released afterward are very corrosive. Some mfg's of esc's and other small rc car electronics have a disclaimer in their warranty regarging this The foam block may interfere with the alignment pins in the top of the case. With silicone they just push thru and imbed themselves.

10-14-2010, 09:26 AM	#35
acidla Registered Users Join Date: Jul 2007 Location: Cyprus	Is it safe to use shoe goo on electronics? __________________ Michalis. Trex 700N LE V-Stabi - Trex 500 ESP V-Stabi - Henseleit TDR! ...and let the flying be second nature!

10-14-2010, 05:34 PM	#36
jondabear Registered Users Join Date: Apr 2008 Location: San Antonio tx.	About to fly 700 w new mod. NOT gna change anything in the settings so that I have a true reference to look back at.

10-14-2010, 05:40 PM	#37
malc1 Registered Users My HF Map location Join Date: Sep 2006 Location: EVESHAM,UK	A good idea that. Looking forward to hearing the results. Good clear photos? __________________ ---- Minicopter Diabolo Pyro750-56 Kosmik200 Vbar v5.3 ----- T Rex 700N YS120 Vbar v5.3 ----- T Rex 600N YS60SR Vbar v5.3 ----- MA Spectra `G`----- T Rex 500 Gyrobot 700 ---------- Vario Sonic ----

10-14-2010, 05:53 PM	#38
Corrari Registered Users Join Date: Mar 2010 Location: Pahiatua, New Zealand	Does it have to be a certain type of silicon? I am a plumber and have roof and gutter silicon and bathroom silicon on hand. __________________ Compass 6HV, TotalG, BLS251, DX7S. Kasama Srimok, Scorpion HK-4525-520KV, TotalG, BLS251, DX7S. ...and the rest...

10-14-2010, 06:16 PM	#39
jondabear Registered Users Join Date: Apr 2008 Location: San Antonio tx.	No pics or vid YET. BUT..............Holy son of a CRA%! This mod is AMAZING on my 700. Didnt change a thing! Heres a quick run down, Feels MORE locked in, ALOT more locked in. Helped with Cyclic movements. I make an input and....its THERE!. Even helped with my PITCH. Thought I was just runnung a rich motor and didnt have alot of punch. With this mod AND my heli running 180 f i now have morre punch out than ive ever experienced. THIS might be our holy grail guys! Weird what a good sensor will do when its not fighting vibes! VERY VERY happy with my results. wish I had tried this a LONG time ago. PEACE!:YeaBaby :

10-14-2010, 08:23 PM	#40
Corrari Registered Users Join Date: Mar 2010 Location: Pahiatua, New Zealand	Your making me jelous....I just need to know if it has to be a specific type of silicon. As i have said, i have roof and gutter silicon galore. __________________ Compass 6HV, TotalG, BLS251, DX7S. Kasama Srimok, Scorpion HK-4525-520KV, TotalG, BLS251, DX7S. ...and the rest...

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