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10-16-2008, 06:55 PM
| #1 (permalink) |
| Flyin' Around  Join Date: Oct 2008
Posts: 6
 |  Katana v2 70 with an os 61?!?
For Anyone out there with any experience with the katana v2 profile, I was looking into getting the 70 size katana, (why get a 40 when I can get one bigger) I have 2 os 61 2 strokes I can use, would a 61 really fly it good enough to hover or do the extreme aerobatics? I know it reccemonds a 61 but is it really enough for the plane? Let me know what you know So I can decide to get it or not. Thanks.
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10-17-2008, 01:23 AM
| #2 (permalink) |
| Bad-ass Super Contributer!   Join Date: Feb 2006 Location: New Zealand Age: 55
Posts: 791
| Re: Katana v2 70 with an os 61?!?
They fly okay with a .90/.91 2-stroke but I think a .61 would be marginal for hardcore 3D flying. The Kat 70s really seem to need a 15-inch prop to get any aileron authority in a hover (the ailerons don't come all the way to the fuselage) and I can't see a .61 turning any lumber that big.
__________________ When I'm not here, I'm at RC Model Reviews |
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10-17-2008, 04:19 PM
| #4 (permalink) |
| All I need is more talent   Join Date: Jan 2006 Location: Tauranga, New Zealand
Posts: 851
| Re: Katana v2 70 with an os 61?!?
91 2 stroke minimum, Better with a bigger 4 stroke.
__________________ www.rcmodels.co.nz |
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10-18-2008, 11:39 PM
| #6 (permalink) |
| Huckin somewhere under the sun  Join Date: Mar 2007 Location: Chattanooga, TN
Posts: 1,126
| Re: Katana v2 70 with an os 61?!?
Grab a Saito 100 an toss on it. It is a beast with the 100.
__________________ Florida Freestyle Aerobatics Association Chattanooga 3D Jam - July 31, Aug. 1 and Aug. 2  www.crccflyers.org |
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10-20-2008, 07:35 PM
| #8 (permalink) |
| Bad-ass Super Contributer! Join Date: Feb 2006 Location: New Zealand Age: 55
Posts: 791
| Re: Katana v2 70 with an os 61?!?
The problem with .60/.61 2-strokes is that they're really inferior from a power-to-weight perspective. Most of them only have a little more power than a good .46-55 (in a 40-wised crankcase) but weigh quiet a bit more. What's more, these days most .60-sized engines are also available in .90/.91 displacement which brings the power-to-weight ratio back to .46-.55 levels. Maybe for a warbird?
__________________ When I'm not here, I'm at RC Model Reviews |
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09-30-2009, 11:54 AM
| #9 (permalink) |
| Flyin' Around  Join Date: Sep 2009
Posts: 11
| Re: Katana v2 70 with an os 61?!?
I have a 70 size Katana with an OS 91 Surpass. I use a 15 x4 W on it. It would be a dog with a 61 on it. If you already have the 61 buy the 40 size plane. That would be a better choice for your motor.
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