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HelicopterThunder TigerOther › tt 50 engine trouble
01-23-2007 09:02 PM  10 years agoPost 1
mickeyapples

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England

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Flying at weekend. engine went through two glow plugs then when i started her on the second glow plug she ticked over then cut out with a pop. Then she would not turn over like a fuel blockage, when i unjamed the engine there was no compression as i could turn her over with my fingers.

Taking head and bottom plate off engine, there was some brown around the head but the bolts where tight the head gasket looks ok, cleaned carb put her back together and she had some compression but not as much as before.

When i try to start her she sits on the edge of starting not quite getting there.
I have changed the clunk line by-passed the the header tank still the same.

I am taking the engine apart all the way to see if the piston ring or somthing has gone.

Should i buy a new engine.

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01-23-2007 09:33 PM  10 years agoPost 2
mbkite

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usa

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Open up the low side at least 1 full turn.

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01-23-2007 09:36 PM  10 years agoPost 3
mickeyapples

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tryed that playing with both jets still the same. When i took the engine out there was a lot of fuel around the front skid area.

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01-23-2007 09:48 PM  10 years agoPost 4
mbkite

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usa

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Brown means lean running hot
But the fuel around the front must mean a leak are the head bolts tight that will make it run lean and if you are going through glow plugs and also ck muffler bolts.

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01-23-2007 09:51 PM  10 years agoPost 5
mbkite

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usa

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Have you ck your fuel filter i have found lint in mine at times. ck carb also for debris.

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01-23-2007 09:54 PM  10 years agoPost 6
mickeyapples

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England

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The head bolts did not snap open and i have had a problem with muffler coming loose from day one and its had about a 150 flights

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01-23-2007 10:07 PM  10 years agoPost 7
mbkite

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usa

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What i did with mine was to file it flat with a big wide file a few passes will tell you right away if the muffler is flat. I also had trouble and added longer bolts with lock nuts and i don't use a gasket or silicone or any thing to seal it just metal to metal has been working good for 2 years now..

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01-23-2007 10:08 PM  10 years agoPost 8
mickeyapples

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England

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I have by-passed filter but still will not start.
Just taken out piston and there seems to be a dent like some debry and gone down the side, maybe part of the glow plug

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01-23-2007 10:13 PM  10 years agoPost 9
mickeyapples

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England

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as for the muffler i have tryed two but both come loose even with gaskets or no gasket, longer nut and bolts

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01-23-2007 10:25 PM  10 years agoPost 10
JAGNZ

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Auckland, New Zealand

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Try the Loctite gasket sealer between the muffler/engine and also put a bit on the threads of the muffler bolts before putting nylocks on them. The heat bonds it and it will come apart cleanly if required. Works perfectly for me. I used to use epoxy but too hard to clean off for a smooth mating surface. Sounds like the TT50 is stuffed. Time for a Hyper. It is a HUGE step up in performance. I will never go back to TT engines now...


Jason Greenwood

www.3dheli.co.nz

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01-24-2007 01:27 AM  10 years agoPost 11
baby_zyklon

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Singapore

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Have you checked the ring or bearing? It sounds like a bearing fragments killing ring situation, at least the pop seems to be so. You can open the engine up to check if you want or you can run it first. If you choose the latter, you will find that with a bad ring(i.e. cracked or broken), you have no compression. The idle will be at a much higher rpm where the clutch is actually appearing to be dragging already. If you do get it started, you will find that there is lots of smoke but no power. These are symptom of a bad ring.

You are not tightening the muffler enough. I used to have loose muffler issue too. Later I found that the screws have to be on quite tight and a nut furthur ensures it.

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01-24-2007 12:52 PM  10 years agoPost 12
mickeyapples

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England

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I have desided the engine is dead. I have a damaged piston so i have desided to go for the os 50 sx-h engine from modelshopleeds.co.uk for £129 hopfully it will be installed for a weekend of runing in.

Thanks for the help guys.

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01-24-2007 06:41 PM  10 years agoPost 13
JAGNZ

rrProfessor

Auckland, New Zealand

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Ouch! £129?????

http://rc-mushroom.com/product_info...roducts_id=3315


Jason Greenwood

www.3dheli.co.nz

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HelicopterThunder TigerOther › tt 50 engine trouble
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