thumper_008

Hi everyone,,, Iam about to built an OMP Edge (46 size) and was going to use an OS 46FX but have seen some references to the Irvine engines. Their cubic size is bigger but can anyone comment on their power output, throttle transition smoothness and user reliabilty compared to the OS46FX? Do the Irvines weigh more?
look forward to your comments.
Regards
Thumper

dhooks

My Feedback: (24)

Good engines, cant go wrong with them. I would get a .53 instead of a .46 though.

southern_touch9

My Feedback: (3)

I have had two of the .46's. They seemed to take forever to get to start. I was using the same fuel/plug/method for break in that I used on my TT .46's. BUT I am a four stroke guy so I didnt really spend much time on getting it to run, I just sold them.

HighPlains

My Feedback: (1)

I ran a Irvine .36 for over 160 hours, over that time ran couple dozen gallons of fuel and used two glow plugs. Great motor, fantastic throttle response, light weight. Irvines start easy, just open the throttle wide open, choke while pulling over twice, flip twice, close throttle and put on plug drive, then flip once and it's running. I like the first one so much, I bought three more.

Irvines have a lot of displacement choices, and have some engines that have a lot of displacement for the case size and weight. They have a .39 (replaced the .36) in a .25 sized case, the .53 in a .40 sized case and so on. They are also pretty tollerant of different prop sizes.

CopperheadAV

I have had several Irvine's. I like the 53 the best. They do not like High Nitro and love the wide APC's. If you get one, Make sure you loc tite the nut that holds the end of the muffler on. The always fall off if you don't. Great motor for the money.

grnd0

My Feedback: (4)

I have a .53 on a Kat40 swinging a 13-4 wide APC. Love it!!!!!!

Larry

CopperheadAV

Perfect Prop for the motor in my view

Monkey Gutz69

My Feedback: (5)

Was also thinking of using the .53 Irvine. I have a TT pro .46.. good lil engine,but heard through the forums that the Irvine .53 was a high rev monster. Does anyone know where I can purchase one at? thanks, MG

McFlyboy

I must have real bad luck with engines, my irvine is a nightmare to start. It's side-mounted in a profile at the moment, and its a "starter applied for a very long time" job to get running. Amusing point, when the bearings were shot, it hand-started inverted, now that they're fixed it won't hand start upright[:@]

Don't get me wrong though, once it is running(I've normally got grey hair by this time) it's a cracker, doesn't stop unless I tell it to, and it spins that 12.25 like no other(I like the little prop, get 'er spinning quicker)

zx32tt

My Feedback: (9)

I got mine from Just Engines in the UK, a couple of years ago. With the exchange rate now, it would cost a lot more. I think Sig handles them here in the US. My .53 has be very reliable.
Z

j.duncker

My Feedback: (2)

Not all Irvines are the same. OS make Irvines in China now. It remains to be seen if the qualities of the Irvine 53 remain the same.

But the old one would be near the top of my list for a plane of that size.

JoeAirPort

My Feedback: (41)

I have the Irvine 53 on a Kat 40 profile, perfect engine. I run an APC 12.25 x 3.75 and it turns around 12,300 RPM. I tried the APC 13-4W and it was a dog. The APC 13-4 (not wide) is pretty good but the 12.25x3.75 is better, rev's up faster.

The Irvine 53 weighs 14 ounces bare. With the 4 ounce muffler it's 18 ounces. It has significantly more power than a 46fx/ax.

TimC

Z, I just visited the Sig web site poking around and there are just 3 Irvines listed. None of them the .53.

Razorback58

My Feedback: (8)

When I first start my Irvine engines (I have two 53's) they seem to like to be very wet before I put the starter to them. Prime them until they are good and wet, then stick the starter to it. Both of mine will crank right up at that point.