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Raptor E550 › Post crash frame question
12-08-2008 08:13 AM  8 years agoPost 1
HeliMan Dave

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Suburban Chicago

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Well guys,

Had a little oops (first one with the E550) several weeks ago. I came out of an inverted hover a little too close to the ground and didn't have enough altitude to recover. I'm finally in the rebuild process.

The only part of the frame (plastic upper half that holds swash bearings) that appears to be cracked is the post that the canopy mount stud screws into. I have weld-bonded the broken mount right back into it's place and was going to reinforce it with a small piece of CF glued to the inside of the frame. It seems really strong now (without any reinforcement).

My question is... Would this be ok? If not, I have 1/2 of my original frame that I could swap in but I don't know if there are manufacturing tolerances that require you to keep/replace frame halves in pairs?

So it's either A) go with the glued stud and keep the matched frame pair or B) swap in the old frame if there would be no tolerance issues.

Of course option C would be to buy another complete frame if A & B are not recommended. I just didn't think it was necessary since the only thing that appears broken is the canopy mount stud.

What would you guys do?

Thanks!!!

Dave

Logo 700 / 600 / 500 V-Bar NEO / Blade 180CFX / mCPX BL / Nano / V-Control

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12-08-2008 09:32 AM  8 years agoPost 2
helinutz

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Bournemouth, Dorset, UK

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I would definitely go with the repair.
No need to spend the money if it seems strong enough.

>>>>>I'm so broke, I cant even pay attention!<<<<<

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12-08-2008 11:29 AM  8 years agoPost 3
Ben-T-Spindle

rrProfessor

Central Illinois

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The repair might work ok – time will tell.

After a crash you should check the bearings for damage. The main shaft bearings are sometimes damages. You should take them out and make sure they are smooth and well lubricated. A crash can damage the balls and the bearing will feel rough when you turn it with a little pressure.

... BTS

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12-08-2008 11:26 PM  8 years agoPost 4
lugnutz

rrApprentice

trenton,nj

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i've done the same thing and never had the conopy come off yet even in backwards flight it should be ok just check it from time to time and make sure you give the weld enough time to cure

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12-09-2008 03:53 PM  8 years agoPost 5
HeliMan Dave

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Suburban Chicago

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Thanks lugnutz, Ben, helinutz.

I will check the main shaft bearings when I put the replacement main shaft in. They felt ok when I tested them before pulling the shaft but I will confirm. It was actually an $80 crash not including blades which puts it at about 150.00

Just glad I didn't total it.

On a side note, what motors would you guys recommend as a replacement for the Tonic-X 1110? I have had a tail twitch from the beginning and never could get rid of it even after grounding the whole heli. I read recently that at a certain RPM range that motor and ESC (Castle Phoenix 85HV) can act up like that.

Dave

Logo 700 / 600 / 500 V-Bar NEO / Blade 180CFX / mCPX BL / Nano / V-Control

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12-09-2008 04:38 PM  8 years agoPost 6
Ben-T-Spindle

rrProfessor

Central Illinois

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A Scorpion HK4025-890 would be a good choice. Use a 13t pinion with a 6s LiPo or 14t for short flight hard 3D.

The nice thing about that motor is you can upgrade to a 8s LiPo and use the same motor. With a 8s LiPo use 9 to 10t pinion. It also has enough power for 600/620 mm blades if you want to upgrade in the future.

... BTS

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12-09-2008 11:03 PM  8 years agoPost 7
lugnutz

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trenton,nj

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a friend of mine uses the tonic-x in his trex 600 and has no problems with it but he does use an Align 100 amp esc,

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12-10-2008 12:18 AM  8 years agoPost 8
Ben-T-Spindle

rrProfessor

Central Illinois

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a friend of mine uses the tonic-x in his trex 600 and has no problems with it
Those are good motors but Scorpion motors are well worth the slight extra cost. If you already have a tonic-x just fly it until it quits then upgrade to a Scorpion.

... BTS

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12-10-2008 12:53 AM  8 years agoPost 9
lugnutz

rrApprentice

trenton,nj

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you are correct that a scorpion is better,but why buy when you can fly what you have already,i wish i learned this sooner,i would have alot less stuff

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12-16-2008 07:38 PM  8 years agoPost 10
HeliMan Dave

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Suburban Chicago

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Thanks Ben.

I was thinking about Scorpion. I see their new ad showing a HK-4025-740KV but I don't see a 4025-890

I'll have to check further.

The other one I'm looking at is the Hacker A40-8L

What do you know about that one?

Dave

Logo 700 / 600 / 500 V-Bar NEO / Blade 180CFX / mCPX BL / Nano / V-Control

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12-16-2008 08:42 PM  8 years agoPost 11
Ben-T-Spindle

rrProfessor

Central Illinois

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12-20-2008 07:52 AM  8 years agoPost 12
HeliMan Dave

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Suburban Chicago

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Thanks Ben.

I see they suggest oiling the bearings on that Scorpion motor every 5-6 flights. I'm surprised as I thought I'd read NOT to oil the bearings in the Thunder Tiger OBL or Tonic-X brushless outrunning motors.

Am I missing something?

Dave

Logo 700 / 600 / 500 V-Bar NEO / Blade 180CFX / mCPX BL / Nano / V-Control

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12-20-2008 11:15 AM  8 years agoPost 13
Ben-T-Spindle

rrProfessor

Central Illinois

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The trend on Scorpion motors seams to be to replace the bearings before you use it the first time. Get some good quality sealed bearings (rubber seal or ultra seal) from vxb.com or bocabearings.com. That way you will be good for 1000 flights with zero problem or oily mess.

I have over 100 flights on one motor with no problems but this does sound like a good upgrade and it gets rid of the messy oil. I am in the process of converting to sealed bearings over the winter. Scorpion motors have an excellent design that makes changing bearings and other maintenance very easy. The longer you own them the more you appreciate the quality and design. They are sure engineered better than Align, Z-Power, or Neu motors.

... BTS

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12-20-2008 06:55 PM  8 years agoPost 14
HeliMan Dave

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Suburban Chicago

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Wow, I didn't know that. For such an apparently great motor, you'd think they would put better bearings in it in the first place.

Oh well. I think that's probably the route I'll take.

Thanks Again!

Dave

Logo 700 / 600 / 500 V-Bar NEO / Blade 180CFX / mCPX BL / Nano / V-Control

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12-20-2008 08:20 PM  8 years agoPost 15
Ben-T-Spindle

rrProfessor

Central Illinois

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Wow, I didn't know that. For such an apparently great motor, you'd think they would put better bearings in it in the first place.
Like I said I got over 100 flights with no problems and lube the bearings about every 25-30. Just look as it as another optional helicopter upgrade.

Sealed bearings will make any motor better but none of the manufacturers that I know use them. It would only slightly increase the cost of a motor. Last time I changed the bearings in my Neu motor I used sealed bearings. One of the main causes of bearing failure is dirt. Oil attracts dirt and some have said that oiling every few flights may actually cause early failure because of the dirt that gets flushed in with the oil. It probably depends a lot on where you fly. When I lived in California dust and dirt was a problem but hear in the Midwest that’s as much of a problem.

You could just fly until the bearings get loose if you like. If you don’t fly that much they would probably last all season or more. I am just doing the upgrade as part of my winter maintenance. This winter I am also putting sealed bearings on the main shaft, tail shaft, and main blade grips.

... BTS

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12-26-2008 06:46 AM  8 years agoPost 16
HeliMan Dave

rrVeteran

Suburban Chicago

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Thanks Ben.

I will continue with this motor issue in a couple months. I test flew the E550 Raptor a week ago and it flew great (other than needing a minor tracking adjustment). I have now put my (3) 6s Lipos in storage charge mode until spring.

I just bought a T-Rex 250 (first Align heli) to fly indoors this winter. I'm awaiting a few parts and then will get started with the build.

Hopefully I won't have any of the "tail issues" that have plagued some.

Merry Christmas!

Dave

Logo 700 / 600 / 500 V-Bar NEO / Blade 180CFX / mCPX BL / Nano / V-Control

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