RunRyder RC
WATCH
 1 page 1135 views POST REPLY
HomeAircraftHelicopter
e-
Align
T-REX 450 › 450 Pro questions
05-09-2011 05:20 PM  7 years agoPost 1
kruuuzn

rrKey Veteran

Traverse City, MI

My Posts: All  Forum  Topic

I noticed my 450 was down on power and blamed it on the batteries. When I recharged the batteries that day they were lower than I've ever taken them to in the past. A friend offered me one of his Thunder Powers to see if I noticed a difference. There was a little bit of difference but nothing like I expected. Then when he put his battery on the charger it was down below 3.7/cell also. Is this a sign my motor is going bad?

Also, I've noticed the top half of my main gear is getting chewed up. Could this be caused by the pinion? Do they wear out also? Which pinion (number of teeth) is best to use on a stock Pro?

Thanks gang.

PM  EMAIL  GALLERY  Attn:RR  Quote
05-09-2011 10:19 PM  7 years agoPost 2
willanyone1

rrApprentice

Griffith, IN U.S.

My Posts: All  Forum  Topic

how old is your heli, there will be wear. is your pinon to tight?

PM  EMAIL  GALLERY  Attn:RR  Quote
05-09-2011 11:04 PM  7 years agoPost 3
kruuuzn

rrKey Veteran

Traverse City, MI

My Posts: All  Forum  Topic

I built it back in July but because it was my first CP I didn't start flying it steady until maybe four months ago.
I've always been careful setting the lash between the pinion and main gear by using a ribbon of paper between the two.

PM  EMAIL  GALLERY  Attn:RR  Quote
05-10-2011 12:46 AM  7 years agoPost 4
willanyone1

rrApprentice

Griffith, IN U.S.

My Posts: All  Forum  Topic

what brand of batteries are you useing?

PM  EMAIL  GALLERY  Attn:RR  Quote
05-10-2011 12:50 AM  7 years agoPost 5
kruuuzn

rrKey Veteran

Traverse City, MI

My Posts: All  Forum  Topic

I've been using G-Force 2200s but I had the same results with a fresh Thunder Power.

PM  EMAIL  GALLERY  Attn:RR  Quote
05-10-2011 12:58 AM  7 years agoPost 6
jac5304

rrNovice

Mount Juliet, Tn - USA

My Posts: All  Forum  Topic

Is there enough clearance between the main gear and the frame. Sounds like the gear may be rubbing the frame. There should be a spacer between the gear and the bearing block. This would rob power and drain the battery quickly.

TT Mini Titan, T-rex 500 ESP, T-Rex 600N

PM  EMAIL  GALLERY  Attn:RR  Quote
05-10-2011 01:24 AM  7 years agoPost 7
kruuuzn

rrKey Veteran

Traverse City, MI

My Posts: All  Forum  Topic

Yep, the little brass spacer is in there.
It's funny how the main gear has an angle worn on the top half of the teeth. When you look at the teeth straight-on the tops of the teeth are shiny.

PM  EMAIL  GALLERY  Attn:RR  Quote
05-10-2011 01:29 AM  7 years agoPost 8
willanyone1

rrApprentice

Griffith, IN U.S.

My Posts: All  Forum  Topic

do you or your buddys have a extra motor around and try it out. I would hate to see ya get a new motor and still have the same prob.

PM  EMAIL  GALLERY  Attn:RR  Quote
05-10-2011 01:44 AM  7 years agoPost 9
kruuuzn

rrKey Veteran

Traverse City, MI

My Posts: All  Forum  Topic

Yep, yesterday a buddy loaned me a 450 motor he had. I put it in (with my original pinion) and tried it out but it was so damn windy I only flew it for a minute. I thought I could bear the wind low enough so see if it made a difference but barely got it down in one piece. LOL
BUT, it only took that short flight to booger up my main gear again.
So now I don't know if I should put another new gear in it before flying it again to try out the different motor.
I seem to have a couple of different things going on here at once. I got to believe they're related though.
What's the life span of a motor? Do pinions ever wear out? What happens if/when they do?

PM  EMAIL  GALLERY  Attn:RR  Quote
05-10-2011 01:48 AM  7 years agoPost 10
jac5304

rrNovice

Mount Juliet, Tn - USA

My Posts: All  Forum  Topic

that gear has to by rubbing on something during flight if the top of each tooth is worn off. Is your pinion riding too high on the gear? Is the one way bearing pressed into the gear to the correct depth. Does the main shaft move up and down? Just throwing out some ideas.

TT Mini Titan, T-rex 500 ESP, T-Rex 600N

PM  EMAIL  GALLERY  Attn:RR  Quote
05-10-2011 01:57 AM  7 years agoPost 11
willanyone1

rrApprentice

Griffith, IN U.S.

My Posts: All  Forum  Topic

it could be the pinion but i would try to fly again and see how your buds motor dose. do you have any play with your motors pinion shaft?

PM  EMAIL  GALLERY  Attn:RR  Quote
05-10-2011 01:59 AM  7 years agoPost 12
kruuuzn

rrKey Veteran

Traverse City, MI

My Posts: All  Forum  Topic

I know I'm baffled too. I keep thinking I'm missing something obvious but I don't know what it would be.
The pinion has always looked to be the correct height in relation to the main gear.
I think the one-way is correct. Could it be incorrect and still be able to get the Jesus bolt in?
I've got all the end play adjusted out of the main shaft with two shims on top of the upper bearing.
Keep throwing those ideas out there!

I'm thinking maybe I'll toss a new main gear in it, adjust everything up, and try it again. It may take a few days though. I need to get some ordered.

PM  EMAIL  GALLERY  Attn:RR  Quote
05-10-2011 03:13 AM  7 years agoPost 13
jac5304

rrNovice

Mount Juliet, Tn - USA

My Posts: All  Forum  Topic

You normally take the up and down play out of the main shaft with the retaining collar that goes above the upper main bearing block and the swash plate. I'm not sure where you would use shims. And yes you can get the bottom bolt through the tail drive gear and main shaft even if the upper main gear is not in the proper position on the one way bearing. The main gear may not be pushed all the way down on the one way bearing. There will be a lot of gap between the upper main gear and the lower tail gear. This happened to me after I replaced the one way bearing. There should also be a shim between the main gear and the tail gear on the main shaft.

TT Mini Titan, T-rex 500 ESP, T-Rex 600N

PM  EMAIL  GALLERY  Attn:RR  Quote
05-11-2011 02:43 AM  7 years agoPost 14
Stephen Born

rrElite Veteran

USA

My Posts: All  Forum  Topic

retaining collar? My T-Rex 450 Pro didnt come with one. The main shaft has a edge in the middle of the shaft. This rests on the bearing.

PM  EMAIL  Attn:RR  Quote
05-11-2011 02:49 AM  7 years agoPost 15
kruuuzn

rrKey Veteran

Traverse City, MI

My Posts: All  Forum  Topic

Correct. And you use shims under the main shaft flange to adjust out any end play.

PM  EMAIL  GALLERY  Attn:RR  Quote
05-11-2011 02:51 AM  7 years agoPost 16
willanyone1

rrApprentice

Griffith, IN U.S.

My Posts: All  Forum  Topic

well if you have no play then its good to go.

PM  EMAIL  GALLERY  Attn:RR  Quote
05-11-2011 03:18 AM  7 years agoPost 17
Stephen Born

rrElite Veteran

USA

My Posts: All  Forum  Topic

Whew! When I saw this post, I thought Align forgot to send me the collar.

PM  EMAIL  Attn:RR  Quote
05-11-2011 04:21 PM  7 years agoPost 18
swoop_g

rrApprentice

Lake Charles, LA USA

My Posts: All  Forum  Topic

Double check your pinion where it meshs' with the main gear, make sure none of the teeth have any burrs or chips on it. Then spin the motor with your fingers and watch the main gear to see if it gets close to anything on the frame or tail drive assembly. If nothing there then grab the main gear and see if it has any play up and down on the shaft/one-way mechanism. Try to grab the main rotor grips and see if you can pull them up and make the main gear assembly move up into the frame. If not you have an invisible gear troll eating your gear cause he's hungry! LOL, J/K! I don't know, can you post a pic of your main gear both on the heli and off so we can see what is going on. That may help.

PM  EMAIL  Attn:RR  Quote
WATCH
 1 page 1135 views POST REPLY
HomeAircraftHelicopter
e-
Align
T-REX 450 › 450 Pro questions
 Print TOPIC  Make Suggestion 

 1  Topic Subscribe

Wednesday, November 14 - 8:50 am - Copyright © 2000-2018 RunRyder   EMAILEnable Cookies

The RC discussion world needs to consolidate. RR is now one choice for that. Its software is cutting edge. It hosts on-topic advertising. Help RR increase traffic buy making suggestions, posting in RR's new areas (sites) and by spreading the word.

The RunRyder Difference

• Category system to allow Rep/Vendor postings.
• Classifieds with sold (hidden) category.
• Classifieds with separate view new.
• Answer PMs offsite via email reply.
• Member gallery photos with advanced scripting.
• Gallery photo viewer integrated into postings.
• Highly refined search with advanced back end.
• Hosts its own high end fast response servers.
• Hosts thousands of HD event coverage videos.
• Rewrote entire code base with latest technology.
• No off-topic (annoying) click bait advertising.
Login Here
 New Subscriptions 
 Buddies Online