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I need help with a V-Max 7

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I need help with a V-Max 7

Old 06-08-2005, 07:33 AM
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Default I need help with a V-Max 7


I recently purchased a brand new V-max 7 to replace my worn out V-6. I broke it in as per the instructions but now I can't get my heli to fly. I have tried everything from 2-7 washers. It will fly for about 30 seconds then overheat and sink to the ground. I have had it close with 4 washers but it would gurgle and want to die out if I punched the throttle. I have richened the needle to a point where it no longer is held in place by the ratchet tab and has fell out in flight. I have also blown out 4 plugs(is this normal?). I am using new 20% omega Castor fuel and 4-6 grips. Temp's in my area are about 70 deg's.

Any Ideas???

I would appreciate any help as I am extremely frustrated.
Old 06-10-2005, 07:34 AM
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Default RE: I need help with a V-Max 7

I have had several Norvels,,my LMH came with a worn out .061 and a brand new .074,,I put the .074 in it and broke it in (4 tanks) with cool power (with added castor,%20 nitro) and 8 shims and it had plenty of power,,you may have inadvertantly bent the con rod so it is running out of time,,it should have plenty of power with the needle 2-3 turns out...Rog

its also possible the cylinder got scored and you've lost compression during breakin...I've never replaced the glow head yet....
Old 06-10-2005, 07:45 AM
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Default RE: I need help with a V-Max 7


I attempted to run it again last night and when I filled the tank I noticed a steady drip near the fuel line nipple. I removed most of the fuel and it still leaked so there must be a hole at the bottom of the tank. I now wonder if I am sucking in air causing a lean mixture. Is this possible with a non-pressurized tank?
Old 06-10-2005, 07:19 PM
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Default RE: I need help with a V-Max 7

Yes it is,,it would be the same as having a crack or pin hole in the fuel line,,and its also probably right on the seam where the tank joins together, this is very common on the LMH tanks,,some guys have tried other tanks like 2 oz dubro ,,I did that but ended up having the muffler burn a hole in it,,so I ordered another LMH tank.....then I lent the whole thing to a friend and he still has it...Rog
Old 06-20-2005, 11:35 AM
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Default RE: I need help with a V-Max 7


A new fuel tank fixed it. Three washers and it runs like a charm...

Thanks

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