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HelicopterThunder TigerOther › Worth rebuilding?
12-02-2005 09:46 PM  12 years agoPost 1
Wazowski

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Portland, Oregon USA

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Well I finally did my first succcessful auto but it was a forced one. I have been running my Raptor with the stock TT39...had it really running sweet, but I had just switched to 20% nitro fuel. After making a few minor high needle adjustments (had gone lean with the new fuel or so it seemed) I was making a few FF passes and was heading back to the pits when I experienced a suddend loss of power. I managed to get stablized and hit the throtlle hold for a fairly in control auto (only one bounce!). I just knew she had over heated but checked the back plate and all was well! I noted lots of smoke before the problem occured so....what the hey? When I got back to the pits I tried to restart but she turned over 270 deg. and seized. I just knew I burned it up. I tore it down at home and found pieces of the back bearing cage throughout. A piece had gone up the intake and wedged itself between the piston and sleeve jamming the ring in the proccess. A new piston and ring fron Heliproz is $37 and a bearing set is another $19. This may seem like a dumb question but is the TT39 worth rebuilding? It would cost $140 to replace with anything else. What say you all?
Wazowski

Any sufficiently advance technology is indistinguishable from magic

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12-02-2005 09:50 PM  12 years agoPost 2
Brownie001

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Sydney, Australia

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Dont waste your time rebuilding, you can a new one for not much more.

Dave

If It can fall.... It probably will

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12-02-2005 10:24 PM  12 years agoPost 3
unklpunk

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alberta canada

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dont waste your time and money rebuilding get your self a new (replacement) one, this would be a perfect time to do a 50 upgrade,.. even to a tt50,.. heliproz usually sells take out tt50 for cheap. or the os .37, or toki 40 looks interesting,.. tuned pipe and all.

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12-02-2005 11:05 PM  12 years agoPost 4
2Can

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Norway

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Go with the OS37!

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12-03-2005 05:39 AM  12 years agoPost 5
ManuelCJr1

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Sun City, Arizona

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I say go with an os 50 hyper (don't forget to change the gearing) Then there will be no need for a upgrade later. Unless your just intrested in figure eights and basic aerobatics. Then the os37 will be good, and alot more fuel efficient.

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12-03-2005 11:32 AM  12 years agoPost 6
NitroJunky

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Rockhampton QLD Australia

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This was the time I decided to upgrade mine to a 50. The upgrade kit is relatively cheap. I chose an OS 50SX-H simply because one was available 2nd hand to me at the right price. I have since fitted the 50 SX-H Hiper. WOW, what a difference. My advice, don't bother with the TT, I have always had bearing trouble with them (I have had three, 36,39,50) and the move to the 50 has to happen sooner or later, so why not now.

If you ain't crashin', you ain't tryin' 'arrrd enough

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12-03-2005 06:31 PM  12 years agoPost 7
Wazowski

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Portland, Oregon USA

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Good Idea nitrojunky...now may be a good time to upgrade but i firgured out how to get the bearing out so for now I'll rebuild...give the TT one more shot and let it go if she blows up again, Thanx

Any sufficiently advance technology is indistinguishable from magic

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