START HERE |
|
Register | FAQ | PM | Events | Groups | Blogs | Calendar | Mark Forums Read |
Unregistered
|
Mikado Logo 800 Xxtreme Mikado Logo 800 Xxtreme Helicopters Discussion |
|
LinkBack | Thread Tools | Display Modes |
04-01-2012, 12:27 PM | #1 (permalink) |
Registered Users
Join Date: Apr 2005
|
Logo XXtreme, Tail gear mesh advisory.
Please watch this video in regards to front gearbox mesh on the XXtreme
[ame]http://www.youtube.com/watch?v=9epekKHN_DA[/ame] |
Sponsored Links | |||
Advertisement |
|
04-01-2012, 03:55 PM | #2 (permalink) |
Registered Users
Join Date: Aug 2007
|
When I saw the first thread about stripping the front tail gears, I knew the cause had to have been the gear mesh was incorrect (somehow, someway), and had nothing to do with the design being at fault.
We have too much experience with the design (with the proper mesh), as being totally reliable, durable, and requiring little to no maintenance, to believe the gears just magically stripped under normal 3D stresses and use. That's just not been our experience, after a 1100+ flights with three XXtremes. (-: Dave |
04-01-2012, 08:27 PM | #3 (permalink) |
|
Thanks a lot for the video Mr.Mel, I just took apart my XXtreme and found I had quite a bit of play. All set now... Luckily I did not strip any gears...
Rob |
04-01-2012, 11:21 PM | #4 (permalink) |
Registered Users
Join Date: May 2006
|
Thanks mrmel
I beleive i did it that way but i will take it down and do it again. Any word on the tail box end ? My tail drive gear (key's into the TT ) will pop back and forth a bit. Back being to tight when turned (can really feel the high spot) and far too loose when set into the boom fully (gear towards pod) Thanks , martin
__________________
Logo XXtreme 800 8917 / 256HV VBC Logo XXtreme 700 on 14s 8917 / 256HV VBC NEO Logo XXtreme 770 14s 8917/9188 VBC Logo 600 8917/ 9188 4035-500 VBC NEO |
04-02-2012, 01:37 AM | #5 (permalink) |
Registered Users
Join Date: Jan 2010
|
at 1:15 you said loosen this setscrew, whilst you ment to say tighten??...
__________________
Designing/Building the HEX Helicopters Sponsored by Gens Ace Batteries, Gryphon Rotorblades, RCbearings.co.uk, |
04-02-2012, 01:38 AM | #6 (permalink) |
Registered Users
Thread Starter
Join Date: Apr 2005
|
Yeah, You caught that
Baseline: Push together while tightening. No play = good, Play = bad. |
08-28-2015, 06:46 PM | #7 (permalink) |
Registered Users
Join Date: Jan 2014
|
Just found this thread. Maidened yesterday. Checked my gearbox by trying to wiggle it in the heli. Can't feel any play but just wondering if it needs to be removed in order to feel the play?
__________________
Logo 500, Scorpion 4020-1100, YGE90LV, Savox SC1257, vBar mini, Futaba R7003SB Logo 800 XXTREME, Pyro 800-40L, YGE200HV, Futaba BLS174SV's & BLS276SV, Vbar Silverline, Futaba R7003SB |
08-28-2015, 10:45 PM | #8 (permalink) |
Registered Users
Join Date: May 2006
|
I've watched this video way back when it came out ('12) and did double check to see if I had an issue. Turns out I had it right.
Little update that covers the next few years ... Logo 800 stripped/melted front set at 115 flights. It wasn't a hard 3d flight , actually I was just running out a pack. Allergies were bugging me so I was puttering around and did a light backflip onto it's backside , loaded up and crashed. Did my best inverted auto. $1400 in repairs. No dryfluids used. Logo 700 stripped/melted front set at 136 flights. Just took off , so about 1 min into flight. Popped up , punch out , flip and roll , fast piro to a hard stop then it let go into a piro. Auto'd the best I could , about $400 in repairs. No dryfuilds either. Both have been rebuilt now , and I'm using the dryfluids on the gears , I reapply every so often also. So for so good but I get a little nervious as im getting around the 100-150 flight mark. Not much info to be had on this subject as there's not too many failures out there that are on the forums. Ive heard of a few others but that's all. I wish there was a clear answer here. Thoughts .... regular dryfuilds treatments .. replace gears at 100 flights ... all of the above ? Martin
__________________
Logo XXtreme 800 8917 / 256HV VBC Logo XXtreme 700 on 14s 8917 / 256HV VBC NEO Logo XXtreme 770 14s 8917/9188 VBC Logo 600 8917/ 9188 4035-500 VBC NEO |
08-28-2015, 11:18 PM | #9 (permalink) |
CHC Benefactor
Join Date: Feb 2006
Location: Singapore
|
Almost wished you hadn't found this thread
I can't remember if I had play or not. Got me worried now. Wondering how you can even attempt to check from the outside? I can't even touch the end of the little shaft it is so protected from access. I'm thinking, it's less about too tight and more about too loose because play should mean tendency to loosen rather than tighten. RcMarty, how do you refresh the application of dry fluids on the front gears? Do you take it apart? |
08-28-2015, 11:49 PM | #10 (permalink) |
Registered Users
Join Date: May 2006
|
Mrmels video is focussing on a vertical play scenario.
The error would occur if one of the setscrews were catching and or tight during assembly of the top/bottom plates. By following the video there isn't any up/down play in the gear. Any play would cause the gear to go down therefore making the mesh looser and increasing the possibility of stripping. I've got some ocd wiring and assembly issues and found that I didn't have any play in my 800 , like wise my 700 was built on the same long timeline. Sadly it didn't prevent the stripping/melting (more melting than a stripping issue) on both machines very close to the same amount of flights (possibly too close to be coincidental ?) Checking while assembled I'd think would be tough. I'd get some long rods in there and see if you can move the gear up or down. If it's tight then you should be good. I'm now using the dryfluids gear lube on the gears. It's hard to apply to the front set as there if there deep but the gear lube come with a little paint brush. So I put a small blob on the brush then turn the gear slowly and swipe onto gear. Make your way around then you can take the little brush and brush the stuff into the gear. I tend to be a but generous on the stuff as access to the TT gear isn't going to happen , need to rely on the vertical gear transferring it. The rears are much easier to 'paint' on lube so I use much less. I've also started marking the mesh of the gears with a silver felt marker. put a mark on both gears before taking apart so that they go back togeather the exact same way. Don't know if it helps or not. Theory is the teeth of the gears are seated to one another , changing it could cause hot spots or stress and a failure. Weather that's a stretch or not I don't know. Also worth noting I don't recall taking apart the 700 (800 had been recently apart) Hopefully this is of some help. I wish I knew more about it. Martin
__________________
Logo XXtreme 800 8917 / 256HV VBC Logo XXtreme 700 on 14s 8917 / 256HV VBC NEO Logo XXtreme 770 14s 8917/9188 VBC Logo 600 8917/ 9188 4035-500 VBC NEO |
08-29-2015, 12:42 AM | #11 (permalink) |
Registered Users
Join Date: Jan 2014
|
Thanks for the propmt response people. Only have a single flight on mine so going to play the (I've got at least 100 flights up my sleeve) card while I wait for my just ordered DryFluids to arrive. Can't hurt !!!
While installed I took a small flat head screw driver an gently instered it under the gear. Try and take any preasure of the gears by making sure the head and tail can move freely. IE not in storage mode with blades all folded up. Then wiggle gently up and down with the screw driver feeleing for play. At least thats what I did. But like RCMarty, the OCD is biting and I'm tempted to take it apart and satisfy myself further....
__________________
Logo 500, Scorpion 4020-1100, YGE90LV, Savox SC1257, vBar mini, Futaba R7003SB Logo 800 XXTREME, Pyro 800-40L, YGE200HV, Futaba BLS174SV's & BLS276SV, Vbar Silverline, Futaba R7003SB |
08-29-2015, 01:22 AM | #12 (permalink) | |
Registered Users
Join Date: May 2006
|
Quote:
Time or Money . I find of you pull the tail servo out , and didn't wire thru the holes in the back of frame the whole box comes out easy. After the head and gears , 20-30 min you will have it on bench. Martin
__________________
Logo XXtreme 800 8917 / 256HV VBC Logo XXtreme 700 on 14s 8917 / 256HV VBC NEO Logo XXtreme 770 14s 8917/9188 VBC Logo 600 8917/ 9188 4035-500 VBC NEO |
|
08-29-2015, 01:45 AM | #13 (permalink) |
CHC Benefactor
Join Date: Feb 2006
Location: Singapore
|
Interesting idea on remembering the mesh. That assumes an exact same number of teeth on both sides of the mesh. Hadn't thought about that.
|
08-29-2015, 01:49 AM | #14 (permalink) | |
CHC Benefactor
Join Date: Feb 2006
Location: Singapore
|
Quote:
It's great stuff and I plan to use it on the Extreme as well. |
|
Thread Tools | |
Display Modes | |
|
|