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90 size engine on a Pulse XT 60

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Old 03-31-2009 | 11:05 AM
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Default 90 size engine on a Pulse XT 60

Hi All,

Has anyone had experience with a 90 size engine on a Pulse XT 60? This will be my second model after the NexStar. Am I getting too much power for a second model? Will the Pulse XT even accomodate a 90 engine?

Also, I know O.S. seems to be the gold standard, but since the 90 sized two strokes are $230, it also impacts the budget. I've heard good things about ThunderTigre 90s, but they are nearly $200 as well and don't come with a muffler. I've also heard mixed reviews about the ST 90 when searching this forum.

Can anyone recommend a good alternative to an OS 90 that is reliable and easy to start and tune?

Thanks.
Old 03-31-2009 | 11:14 AM
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Default RE: 90 size engine on a Pulse XT 60

Yeah.. the OS .75 AX. It will pull that 60 size plane around just fine. I have a Goldberg Skylark 70 and the OS .75 does wonders with that plane. AND, as per your request, it is just about the easiest engine I have to start. I fuel it up, prime it, hook up the glow driver, and whack the prop in the backwards direction (against the compression) and it starts up on either the first or second try. Then, once warm, well, it starts up on the first try each time, every time.

Fine engine.

CGr.
Old 03-31-2009 | 11:57 AM
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Default RE: 90 size engine on a Pulse XT 60

Saito .91 in mine.
Old 03-31-2009 | 12:22 PM
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Default RE: 90 size engine on a Pulse XT 60

Look at the magnum engines. The 91 was on sale not long ago for $100 and then $139 and regular price $159. I have no problems with my magnums both 2 ST and 4ST Very good engines and will pull that pulse around just fine
Old 03-31-2009 | 01:34 PM
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Default RE: 90 size engine on a Pulse XT 60


ORIGINAL: DenverJayhawk

Hi All,

Has anyone had experience with a 90 size engine on a Pulse XT 60? This will be my second model after the NexStar. Am I getting too much power for a second model? Will the Pulse XT even accomodate a 90 engine?

Also, I know O.S. seems to be the gold standard, but since the 90 sized two strokes are $230, it also impacts the budget. I've heard good things about ThunderTigre 90s, but they are nearly $200 as well and don't come with a muffler. I've also heard mixed reviews about the ST 90 when searching this forum.

Can anyone recommend a good alternative to an OS 90 that is reliable and easy to start and tune?

Thanks.
I had an OS 75AX on my Sig 4* and it flew it like a champ. The planes supposedly have similar flying charactgeristics and weight.

Dumb thumbed it in a couple of weeks ago.
Old 03-31-2009 | 02:17 PM
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Default RE: 90 size engine on a Pulse XT 60

I have a OS 90 AX in my Pulse. It runs fantastic and does not lack for power. In the Denver area
you should look at upping the power of any plane by from a quarter to a third. The power loss at that
altitude will be noticable when running stock power plants.

Old 03-31-2009 | 02:27 PM
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Default RE: 90 size engine on a Pulse XT 60

Tower Hobbies 75. Most bang for the buck.
Pulse XT 60 flys very nicely with this engine.
Old 12-31-2009 | 04:46 PM
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DG
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Default RE: 90 size engine on a Pulse XT 60

I have the OS .91fx. I figure I can always back off the throttle and it will probably be moved into my next plane. When that happens I will put the .61fx in for my son to fly. I am interested in what anyone else is running for props on this combination. I am considering a 15x8 but will have to change the landing gear. I dont know if they make an appropriate 3 blade.
Old 12-31-2009 | 06:58 PM
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Default RE: 90 size engine on a Pulse XT 60

Have a Saito 100 on my 60 size pulse.... IMHO the perfect engine for this airframe. Light, plenty of power, and love the four stroke sound.

My 2 cents....

Steve
Old 12-31-2009 | 07:58 PM
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Default RE: 90 size engine on a Pulse XT 60

Too much power= just about right!!!

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