I got a [link=http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXBCKA&P=ML]O.S. GT33 Gasoline Engine[/link]. I had a very important project at work and didn't get to touch it until Saturday. I got it mounted on a PSP backplate and today I ran it.
I could not use my starter. The starter would start the MLD-35 fine, but not this puppy. Too much compression. I had to hand start it. And I REALLY don't like to do that. But it wasn't so bad after all. Only took about 6 flips after I started in earnest and not just practicing. I had heard that you couldn't hand flip these things. The ignition appears to be made by Rcexl now. I used an Rcexl tachometer with no problem using a Y adapter between the sensor and the ignition. So nice being able to see the RPM's without using a hand-held tach.
This engine is well made. it is definitely a quality engine. Some things concern me. I have read that people have broken the backplate using an electric starter. With the compression so high I can see how a low of pressure is needed. I'm going to get this starter [link]http://www.sdshobby.net/super-big-starter-can-use-for-80cc-gas-plane-p-2149.html[/link] even though shipping on it is a little expensive as it is still less than anything I have found in the US.
It is extremely smooth running even though it is not broken in and now only has 24 ounces of fuel through it.
Only thing that concerns me is the top end. Even when the MLD-35 was brand new, it would turn 7500-7800 with a Xoar 18x8. The GT33 is *****g out at 6000 with a Xoar 18x8. The MLD-35 is Schnuerle ported and unless the case is hiding it, the GT33 is not. It may just need breaking in as others report better performance. But the GT33 is running much better.
I got the [link=http://www.sdshobby.net/rcexl-single-ignition-for-ngk-cm610mm-p-2388.html]Rcexl Single Ignition for NGK CM6-10MM[/link] for the MLD-35 this week and will be trying it. If the MLD-35 out-performs the GT33 and starts running well, I may go with it on the P-51. I'm leaving the GT33 on the test stand until it is broken in.
I have to sheet Quickie wings today and work on web sites, so I have limited time the rest of the day.
BTW, AirBorne Models has a few minor flawed P-51 Mustang G.S. planes that they will sell as Scratch and Dent for $200 plus shipping ... Call Steve at 925-371-0922 ... Call before I do
