Which Engine? DPM Ultimate
01-11-2007, 07:10 AM
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Which Engine? DPM Ultimate
DPM Ultimate 120 Biplane. What flavor will be best? The new OS 120 AX, OS 120 surpass w/pump, or Saito 125 four stroke. I am looking for dependability as well as power. Easy starting and smooth running! Thanks
01-11-2007, 09:39 AM
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RE: Which Engine? DPM Ultimate
The specs on the os 120 surpass show much less horsepower than the 120AX, should this be a concern for the DPM ultimate and also what fuel is best with the 120 surpass 4-stroke? Thanks
01-11-2007, 09:48 AM
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RE: Which Engine? DPM Ultimate
Nothing less than a Saito 180 or YS 160 DZ IMO. Keep it simple, keep it light with lots of power. Do a search in the ARF forum, lots of tips there.
01-12-2007, 01:46 AM
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RE: Which Engine? DPM Ultimate
The YS 120 AC would be the best choice if you're determined on running a 1.2 ci. four stroke in the Ulti. This plane weighs in at 12-13 lbs and there is a lot of drag being a bipe. A 1.2 will fly it, but not with authority. A YS 140 would be a better choice, but the 160 DZ would be the ticket.
If you wish to use a two stroke I would go with an OS 160 FX or a 1.8 Moki.
I have a Saito 180 in my Ultimate. I believe it weighed in at 12 Lbs-12 oz. It does fly quite well with very good vertical performance, but slow to pull out of a hover with a APC 18 x 6. If I had to do it over again I would go with 160 DZ.
If you wish to use a two stroke I would go with an OS 160 FX or a 1.8 Moki.
I have a Saito 180 in my Ultimate. I believe it weighed in at 12 Lbs-12 oz. It does fly quite well with very good vertical performance, but slow to pull out of a hover with a APC 18 x 6. If I had to do it over again I would go with 160 DZ.
01-12-2007, 07:26 PM
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RE: Which Engine? DPM Ultimate
ORIGINAL: Pepe J
The YS 120 AC would be the best choice if you're determined on running a 1.2 ci. four stroke in the Ulti. This plane weighs in at 12-13 lbs and there is a lot of drag being a bipe. A 1.2 will fly it, but not with authority. A YS 140 would be a better choice, but the 160 DZ would be the ticket.
If you wish to use a two stroke I would go with an OS 160 FX or a 1.8 Moki.
I have a Saito 180 in my Ultimate. I believe it weighed in at 12 Lbs-12 oz. It does fly quite well with very good vertical performance, but slow to pull out of a hover with a APC 18 x 6. If I had to do it over again I would go with 160 DZ.
The YS 120 AC would be the best choice if you're determined on running a 1.2 ci. four stroke in the Ulti. This plane weighs in at 12-13 lbs and there is a lot of drag being a bipe. A 1.2 will fly it, but not with authority. A YS 140 would be a better choice, but the 160 DZ would be the ticket.
If you wish to use a two stroke I would go with an OS 160 FX or a 1.8 Moki.
I have a Saito 180 in my Ultimate. I believe it weighed in at 12 Lbs-12 oz. It does fly quite well with very good vertical performance, but slow to pull out of a hover with a APC 18 x 6. If I had to do it over again I would go with 160 DZ.
Malcolm
