GP Tigermoth 91 4 sroke enough??
06-05-2004, 08:11 PM
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GP Tigermoth 91 4 sroke enough??
has anyone flown the GP tigermoth with a 91? just wondering if its enough power. my Magnum 52 on my eindecker should really go balls to the wall and it doen't! the moth is pretty big and im wondering if a 91 will cut it.. thanks
06-06-2004, 08:51 AM
#2
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RE: GP Tigermoth 91 4 sroke enough??
If your talking about the Great Planes Tiger Moth ARF any .91 4 stroke is perfect for it. A friend of mine flies one with a Saito .80. No problems.
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06-06-2004, 09:01 AM
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RE: GP Tigermoth 91 4 sroke enough??
HI Airmaniac,
just read my thread "tiger moth maiden flight". My moth did fly with a fss91 surpass II from OS. Prop was a 14x6. The plane flew ok, very rea;istic, but sluggish...high wind and also the fact that I had done a new finish on it that was heavier than the monokote. To balance the plane, I had to add 8oz of lead on the engine mount. The plane flew at full power most of the time.
IT flew, so a 91 4 stroke is ok, and if you stick to the original finish, should be fine.
In my case, since the difference of weight between a 91 and a 120 (both 4 stroke) is 8 oz, and I had to put 8 oz of weight to balance the plane, I thought it would be better to put useful weight than dead lead. I can now turn a 16x6 prop, more scale size.
But I repeat, if you keep the weight in range, the 91 should be fine. Also, avoid ANY weight around the tail, so that you do not need so much lead in front. Make sure you balance the plane close o nose heavy, as the controls are somehow sluggish
Good luck
Al
just read my thread "tiger moth maiden flight". My moth did fly with a fss91 surpass II from OS. Prop was a 14x6. The plane flew ok, very rea;istic, but sluggish...high wind and also the fact that I had done a new finish on it that was heavier than the monokote. To balance the plane, I had to add 8oz of lead on the engine mount. The plane flew at full power most of the time.
IT flew, so a 91 4 stroke is ok, and if you stick to the original finish, should be fine.
In my case, since the difference of weight between a 91 and a 120 (both 4 stroke) is 8 oz, and I had to put 8 oz of weight to balance the plane, I thought it would be better to put useful weight than dead lead. I can now turn a 16x6 prop, more scale size.
But I repeat, if you keep the weight in range, the 91 should be fine. Also, avoid ANY weight around the tail, so that you do not need so much lead in front. Make sure you balance the plane close o nose heavy, as the controls are somehow sluggish
Good luck
Al
02-21-2005, 08:23 PM
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RE: GP Tigermoth 91 4 sroke enough??
I have noticed that all the post on the GP Tiger Moth are old. At least 6 months to a year. Has anyone had a recent experience with this plane? I am currently putting one together with a new OS 91 Surpass II and hope that it will balance with little or no weight added. I hope the factory picked up on the nose heavy situation and corrected it by now. If not I will use two batteries or one really large one. I hate adding useless weight to an airplane. Could also use heavy metal engine mounts like the ones that come with some ARFs. I would love to hear some fresh comments on this plane.
John 3:16
John 3:16
