B/W Stratus landed!

[tucfaz]

Hi,

What does it mean when you say "Dailed" in to less then 0.001??

I'm running a os 90 sz, smooth as silk. Got a friend to balance the fan perfectly and its great. Unfortunately, the governer magnet has fallen out so its not so perfect anymore.

I have a maryland machine fan that i ordered waiting to be installed. A bit lazy so will eventually get around to it .

Dialed in to less than 0.001 and it will be as smooth as smooth can be, alternatively, you can try the maryland machine fans, they tend to be smooth off the shelf if you (like me) cant get the balance / runout perfect.

As for not balancing the fan, thats not an option with MA Stuff. Had the same problem with my Tempest and it was cured by balancing.

If its stiff accessively rich, then don't worry about it till you lean it out to operating speed.

Do a search on RR for balancing the stratus fan, i believe there is a video floating about. The guy uses cups of ice in place of a fancy balancer, pretty ingenious.

Also, as you are breaking in the engine, check for screws that may be vibrating loose. This is only a problem during break in. After that, you are golden.

Regards,

Pars

[CKS]

Meaning the degree of roundness (i may be wrong) of the fan had been checked using a dial indicator http://en.wikipedia.org/wiki/Dial_indicator

Hi,

What does it mean when you say "Dailed" in to less then 0.001??

[edmond22]

hey CKS,

very normal, I had the same thing with my OS91SZ. Let the bugger run in. It will settle in gradually. But just lookout for loose screws and whatnots too. I had a lot of those happening during the "vibe period".

[CKS]

Kindof scary.. especially the loose screw part
how long did it take? after how much gallon of run in?

hey CKS,

very normal, I had the same thing with my OS91SZ. Let the bugger run in. It will settle in gradually. But just lookout for loose screws and whatnots too. I had a lot of those happening during the "vibe period".

[edmond22]

I can't really recall the exact dates lol. but one thing for sure is,

I added shims to make it 0.02 for 30%. This lessened the temp a great deal and allowed me to lean out a lot. I would say maybe like 5-7 gallons or so. My mates who flew with me will know my complaints as I was desperately trying to figure out the vibes, seems like it happens to everybody in Runryder lol.

[tucfaz]

Thank You.

Meaning the degree of roundness (i may be wrong) of the fan had been checked using a dial indicator http://en.wikipedia.org/wiki/Dial_indicator

[Parsifal]

I stopped worrying about loose screws after the first gallon but still check randomly after each flying day. You can basically stop worrying when you have gotten the engine to run perfect / or as close to perfect as you think it will ever get.

Just to put your mind at ease, none of mine loosened up during the breakin period or anytime after so far (touch wood).

Another thing to look out for after every flying day is those stupid servo horn (gold) screw things. I had one loosen up after about 6 gallons or so, lucky to have checked, cleaned it up and a spot of blue threadlock again and its been tight ever since.

You are right about the dial indication.

Hope you have a good flying weekend ahead.

regards,

pars

[shauntot]

cks - bro, just an added one since your heli's gonna be shakin' a lot during break-in while that engine is still a virgin and rich

don't forget to re-tighten those bolts on your muffler right after the flight when the engine and muffler are still hot, the metal tends to expand so re-tightening the muffler bolts will ensure that your muffler won't come off in flight.

didn't happen to me, but almost did. somehow i only tightened 3 of the 4 bolts on the hatori that's mounted to my twister, when i went to re-tighten them after a break-in flight, one was coming off almost already, the 3 were still holding on though. not a biggie but if the nut backed off completely from the bolt, it could have rattled and induced a metal-to-metal interference which could have caused a failsafe.

[Mazon]

Finally with a canopy.

[CKS]

Thanks for the pics Adrianli & Mazon
One of the thumb screw (to secure canopy onto the frame) went missing in flight
All other screws are still secured though .. how did u guys get the thumb screws to hold when they've to be taken out on every flight?

[Parsifal]

I have lost a total of 3 of those damned thumbscrews. I now tighten them reaaaaaaal tight, with a allen wrench.

[Parsifal]

Er... why do you take them out for every flight?

[CKS]

Yea.. damn thumbscrews!
em.. i prefer to manually connect/disconnect the lipo to regulator instead of going through a switch.

I read on RR that slipping fuel tube onto the canopy mount to create some 'compression' can get the thumbscrew to hold better.. will be trying that

[Parsifal]

Ah... ok.. i guess that might work.

Get a heavy duty switch dude! It becomes a real pain in the ass to be taking the canopy off every flight given the thumbscrews (i used a glow ignighter, i was doing that before i got the switchglo and it drove me to get the switchglo.

regards,

Pars

[Heli_fanatic]

WOOOooooT

CKS ! Now you can sell off one of your 50s

just kidding .

Must join you some time with your 90