CoronaL
04-23-2008, 06:54 PM
My buddy and I each got TT 53 redlines for our 600N builds. I have an OS hyper 50 in my other 600N non pro, but wanted to try the Redline in my 600N pro build after reading the hype about the power etc...
Mine I got working fine. Actually started and ran great on wildcat 30% and although it was pig rich made very good power. Was pretty easy to tune. When I switched to Wildcat 30% CY blend(higher oil content) it ran like poo until I spent a fair amount of time adjusting the main and low end needles. Then just as I was about to throw my hands up after about 5-6 tanks of chasing the tune, it started to run GREAT and make tons of power. I mean ALOT of power. Near my 600E type power, as when I flip and roll my 600E it takes alot to bog the head on that, and I'm very poor with my collective management in the infancy of my heli flying. My head temps are 210-220F after fast FF and very very mild 3d in 70's F weather. No bogging now, and I'm happy except for one hiccup in the motor that scared me on my last flight durning a high speed high G bank with about 1/3-1/2 tank left(no header tank). My clunk is fine, so I'll chaulk that up to maybe still a new motor.
My buddies motor though ran like poo since the first start. Needed about 2turns out on the low needle just to start, and the transition was almost unable to be tuned between low and high needles. We always seem to be "chasing" a tune with his motor and we can get it close, but it either seems to turn rich or lean within seconds or minutes. Finally after 3 sessions of trying to tune the motor he pulled it. Alot of endplay can be felt in the crank, you could pull it in and out about 1/4". Taking the backplate off you can see where the crank pin is/was rubbing on the backplate. Also the carb just seeminly wouldn't tune. Tried a new OS #8 and we could start the motor with the low needle flush with the carb but it was way lean and found ourselves at the previous settings of 2 turns out on the low needle. Chasing the tune just never got fair power out of the motor and hunting between pig rich or lean popping :(.
Now at face value if I was an outsider I would think the poster of this thread and his knucklehead friend didn't know how to tune a nitro motor. However, I've been tuning nitro planks for 20+ years, and he's been flying nitro heli's since the early 90's. He's pissed off at TT and probably at me too for following my lead on the TT53 redline. We fired off an email to TT last night and to give them credit they responded within a couple hours. Wanted some pics of the motor which he supplied. And now he's in the "we will get back to you" phase.
Anyone have experience with how long it takes to get a TT motor serviced. He didn't buy this heli to stare at it on the bench. I'll probably loan him my Spare OS50hyper I bought used off the forums for the inevitable bearing exchange(I hate downtime).
Also, is this just a bad luck case. I read alot of threads on tuning issues at the "other site" that he linked to me. It gives me a headache to try to read that forum though as the text and organization of that site is just "backwards" to me, ie not well done.
Mine I got working fine. Actually started and ran great on wildcat 30% and although it was pig rich made very good power. Was pretty easy to tune. When I switched to Wildcat 30% CY blend(higher oil content) it ran like poo until I spent a fair amount of time adjusting the main and low end needles. Then just as I was about to throw my hands up after about 5-6 tanks of chasing the tune, it started to run GREAT and make tons of power. I mean ALOT of power. Near my 600E type power, as when I flip and roll my 600E it takes alot to bog the head on that, and I'm very poor with my collective management in the infancy of my heli flying. My head temps are 210-220F after fast FF and very very mild 3d in 70's F weather. No bogging now, and I'm happy except for one hiccup in the motor that scared me on my last flight durning a high speed high G bank with about 1/3-1/2 tank left(no header tank). My clunk is fine, so I'll chaulk that up to maybe still a new motor.
My buddies motor though ran like poo since the first start. Needed about 2turns out on the low needle just to start, and the transition was almost unable to be tuned between low and high needles. We always seem to be "chasing" a tune with his motor and we can get it close, but it either seems to turn rich or lean within seconds or minutes. Finally after 3 sessions of trying to tune the motor he pulled it. Alot of endplay can be felt in the crank, you could pull it in and out about 1/4". Taking the backplate off you can see where the crank pin is/was rubbing on the backplate. Also the carb just seeminly wouldn't tune. Tried a new OS #8 and we could start the motor with the low needle flush with the carb but it was way lean and found ourselves at the previous settings of 2 turns out on the low needle. Chasing the tune just never got fair power out of the motor and hunting between pig rich or lean popping :(.
Now at face value if I was an outsider I would think the poster of this thread and his knucklehead friend didn't know how to tune a nitro motor. However, I've been tuning nitro planks for 20+ years, and he's been flying nitro heli's since the early 90's. He's pissed off at TT and probably at me too for following my lead on the TT53 redline. We fired off an email to TT last night and to give them credit they responded within a couple hours. Wanted some pics of the motor which he supplied. And now he's in the "we will get back to you" phase.
Anyone have experience with how long it takes to get a TT motor serviced. He didn't buy this heli to stare at it on the bench. I'll probably loan him my Spare OS50hyper I bought used off the forums for the inevitable bearing exchange(I hate downtime).
Also, is this just a bad luck case. I read alot of threads on tuning issues at the "other site" that he linked to me. It gives me a headache to try to read that forum though as the text and organization of that site is just "backwards" to me, ie not well done.