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ESM P-51B-Impressions

Old 12-17-2009, 02:04 PM
  #26  
Loopman
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Default RE: ESM P-51B-Impressions

mimoore67,
Yes, we are not comparing apples to apples. I would still be interested in finding out how you come out with the 4 blade as I may want to go that route on my Saito 1.80 which is on my Spitfire.

Happy Flying!

Loopman
Old 12-17-2009, 02:26 PM
  #27  
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Default RE: ESM P-51B-Impressions


ORIGINAL: Loopman

mimoore67,
Yes, we are not comparing apples to apples. I would still be interested in finding out how you come out with the 4 blade as I may want to go that route on my Saito 1.80 which is on my Spitfire.

Happy Flying!

Loopman

The Saito won't work either, it not a geared engine! Just like your gas engine!
Old 12-17-2009, 04:14 PM
  #28  
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Default RE: ESM P-51B-Impressions

The protoype Spitfire was flown on the 91cd version, not the in line SP, the 91 was thought sufficient for an out of box build,

the MK14 Spit carried 5 blades, and i believe this set up is still available from KMP, If you go the SP route, it is IMPERATIVE that you consider the cooling, it needs ducting air over the head, DIRECTLY onto the fins, seeing as the fins are not in line with the normal airflow, then some thought has to be given to this, remember, any air that goes past ANY engine, and does not get to the fins, is wasted cooling air, whatever you do, make sure the in, is 3 times smaller than the out,

Old 12-17-2009, 04:45 PM
  #29  
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Default RE: ESM P-51B-Impressions

Alanc,
do you know if anyone has used the ASP 180FS in the Spit? Or is that engine too big for hte 73" range?
Old 12-17-2009, 05:31 PM
  #30  
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Default RE: ESM P-51B-Impressions

not to my knowledge, but the Spit has been the best seller of the fleet, if we can get someone shoving a DA 50 in our smaller hurricane, anything is possible!! (yes, this happened, by the way) the spit does not need the 180 power, you would be cruising around at low throttle,
Old 12-17-2009, 07:56 PM
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Default RE: ESM P-51B-Impressions

AlanC,
I put the Saito I.80 in because that is what I had. It fit well with very little cutting of the cowl. The stock muffler worked well too. I was surprised that even with the 1.80 I still ended up with the Rx pack and some lead on the engine mount. Adding the weight is no big deal, as it was more important getting the CG where it needed to be.

Happy Flying!

Loopman
Old 12-18-2009, 02:48 PM
  #32  
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Default RE: ESM P-51B-Impressions

...I thought about useing the ASP180 in a 120 bird until the engine is broken-in. Otherwise, with a 16x8 the Spit should fly very fast
I guess, the ASP 180 would balance the plane well.
Old 12-18-2009, 04:47 PM
  #33  
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Default RE: ESM P-51B-Impressions

Nose weight does not surprise or bother me,

if there was no weight up front, it would be a film covered, flat plate tailed model, cant have that, can we???
Old 12-20-2009, 10:36 AM
  #34  
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Default RE: ESM P-51B-Impressions

Hey Everyone,
Well I'm moving forward with the build on the ESM P-51B. Installed the RCGF 26cc rear carb engine. Used a set of stand offs from PSP mfg. along with the stock OEM stand offs. I had to cut down the stock ones to get the distance correct from the firewall to the back of the drive washer, 156mm. I used a bellcrank and 2-56 rod to construct a manual choke linkage and it works as smooth as grease on a pig,wish I had camera to show it. I reversed the carb and I reversed the throttle arm on the carb as well. It all still functions as before but just in mirror image. The needles are now accesible from the top of the fuse cowling. It looks like I will have to mount the ignition module inside of the forward fuse as there is no room on the exterior firewall. I'll use industrial strength velcro and attach the module to the inside sidewall of the fuse, the 2000mah 4.8v ignition battery will be velcro'd to the back of the firewall. I always keep all of the electronics for the ignition, including the battery well forward and away from any of the radio components. The spark plug cable exits the bottom of the fuse about 2 inches behind where the cowling meets the fuse. I'm also using a fuel "T" and fuel dot from PSP as I do not like fueling valves or three line systems (just my personal choice).

As for a muffler, I used the RCGF rear dump and ended up doing surgery on it. I removed the raised manifold section on the muffler in order to get it inside the cowl a little more. This got the muffler about 1/4 inch closer in but I still ended up cutting the cowl significantly to get a proper fit. In retrospect, if I had used a Saito 1.50 or 1.80 I could've retained the sidewalls of the cowl virtually intact. Oh well, what's done is done. The RCGF rear dump also required that some indents be made in the lower firewall to clear the exhaust tubes, still no big deal but all in all installing a gas engine is a PITA compared to a 4 stroke!

Happy Flying!

Loopman
Old 12-20-2009, 11:45 AM
  #35  
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Default RE: ESM P-51B-Impressions

Why are there still no pictures in this thread?
Old 12-20-2009, 02:47 PM
  #36  
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Default RE: ESM P-51B-Impressions

Hey Guys,
I got an old SONY MAVICA at a yard sale today, works with 3.5" floppy discs, cost was $15! Here are a few pics of my engine installation. One other pic shows where I have now removed the plastic tube support in preparation for installing fibreglass pushrods for the rudder/tailwheel and elevator. If you have any questions on these just yell. I'll post more now as I go through the rest of the build.

Happy Flying!

Loopman
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Old 12-20-2009, 07:02 PM
  #37  
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Default RE: ESM P-51B-Impressions


ORIGINAL: Evil_Merlin

Why are there still no pictures in this thread?

I guess ask and you shall receive ! LOL

Nice work keep em coming
Old 12-20-2009, 09:16 PM
  #38  
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Default RE: ESM P-51B-Impressions


ORIGINAL: Loopman

Hey Guys,
I got an old SONY MAVICA at a yard sale today, works with 3.5'' floppy discs, cost was $15!

Happy Flying!

Loopman

Good old camera!
Old 12-20-2009, 09:32 PM
  #39  
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Default RE: ESM P-51B-Impressions

Mounted my SV-26cc. Have yet to get the ignition mounted, but plan on the same type set up as Loopman.
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Old 12-20-2009, 10:17 PM
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Default RE: ESM P-51B-Impressions

that's a nice looking little engine there KC is that the Keleo muffler or the one that comes stock with the engine, by the looks of it you will have only a small amount of cowl to cut away.

I have a couple of items to sell off but I would like to pick up one of the ESM planes soon.
Old 12-21-2009, 05:41 PM
  #41  
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Default RE: ESM P-51B-Impressions

Not a whole lot to show here. I included another shot of the engine install from the top and one that shows the choke linkage. Of course, I had to include a shot of "Big John", a fitting pilot for this sky sled! I would show some pics of the wing but not much to see, typical joined wing. The wood in the retract area looks pretty good though but I'll still add some medium CA to harden it up a bit. No work today, too darned cold in the garage.. er, the workshop!

Happy Flying!

Loopman

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Old 12-21-2009, 05:59 PM
  #42  
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Default RE: ESM P-51B-Impressions

Wanting to swing a big 4-bladed prop, has anyone considered a diesel converted engine??
I've never heard of a gasser being thus modified but, I do know that Davis Diesel has an OS 34cc BGX-1 conversion......hmmm....
Old 12-21-2009, 06:46 PM
  #43  
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Default RE: ESM P-51B-Impressions


ORIGINAL: bigtim

that's a nice looking little engine there KC is that the Keleo muffler or the one that comes stock with the engine, by the looks of it you will have only a small amount of cowl to cut away.

I have a couple of items to sell off but I would like to pick up one of the ESM planes soon.

That is the stock mufler that comes with the SV26 engine. Not sure if Keleo makes a muffler for the SV26, but they do make one for the Aerovate 26. Thomas at VQ Warbirds has them. And they come with stand offs that are just the right length for this bird.
Old 12-21-2009, 07:07 PM
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Default RE: ESM P-51B-Impressions

man its hard to keep track of all these little engines, thanks for the clarification

it would be interesting to compare the exhaust ports of the different engines to see if the exhaust headers are interchangeable having the carb in the rear of the engine is a real plus,part of the reason I switched from a small gas engine on my P-47 to a 120 4stroke.

from the looks of the keleo pipes it has a pretty slim profile coming off the cylinder head
Old 12-21-2009, 07:47 PM
  #45  
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Default RE: ESM P-51B-Impressions

I agree.....I wish that all manufacturers would set some standard. I have looked at the specs for a number of engines and they mostly all differ a very small bit on the exhaust port dimensions. It looks like the Keleo is the only muffler out there that really doesn't require you to cut the cowl of these narrow warbirds. It is a costly muffer though.
Old 12-22-2009, 12:27 AM
  #46  
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Default RE: ESM P-51B-Impressions

A little late, but as Johnny Zero said, it's the stock muffler. I like the Duke pilot. I was going to get one for a P-40, but seeing as I tend to have unhealthy results with P-40's for some reason, I never did buy him. I'll be getting a set of Tony Howard Scale exhaust to replace the vacuformed ones provided stock. I had a set on a RichModels P-51D and they looked great. I think they will add a lot to this fine looking warbird. [link=http://www.pacific-scaled-aircraft.com/Jim%20Sewell%20-%20Richmodel%20120.jpg]PHOTO[/link]
Tomas and I talked about the Keleo exhaust and the difference in the bolt pattern was a hair off, so I'll be stuck with the one I have.
Old 12-22-2009, 01:33 AM
  #47  
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Default RE: ESM P-51B-Impressions

how was it you decided to go with the SV26 Vs the aerovate , price, rep, just happen to have it handy.

the pics that thomas posted looks as though the aerovate fits right in there, the appeal of gas is really calling me, I am really attracted to the FW 190, got to hold off till after the new year though
Old 12-22-2009, 06:36 AM
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Default RE: ESM P-51B-Impressions

KC,
I e-mailed Tony Howard two weeks ago and he replied that he did not have a set of exhausts that would fit the ESM kit. I was tempted to get one of his kits though and modify it but decided against it. If you get one please post pics of your modification and install. BTW, your engine install looks first class.

Happy Flying!

Loopman
Old 12-22-2009, 12:10 PM
  #49  
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Default RE: ESM P-51B-Impressions

Unfortunately the ESM Mustang is an unusual scale and thus one that I have had very few requests for exhaust kits for in the past. The next size larger kit I have is too large and the smaller too small to be easily adaptable. The 'scale' problem is compounded by the cowl having a pre cut opening for the exhaust shrouds. That means the shrouds must either match the opening or the pre-painted cowl needs to be modified.

One customer bought and fitted a larger kit to his KMP Mustang (which I understand to be the same kit as the ESM?) and is shown in the picture below. It appears that he filled in the cowl opening and then surface mounted the shrouds which are larger that the original cut out.

I'd like to work up a kit in this size range eventually, but I have some other pressing projects to finish first including new molds for several of my kits.



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Old 12-22-2009, 01:18 PM
  #50  
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Default RE: ESM P-51B-Impressions

Well, that solves that issue, not how I wanted it to be solved, but solved none the less. If anyone ever does do a Mustang in a scale that Tony Howard exhaust fits on, I highly recommend them. They are easy to put together, and a with a little paint, they look great. Now what to do? I still dislike the vacu-form plastic ones included. Maybe make my own? A little balsa, epoxy and some copper tubing.........

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