fhollahan

Correction. I have kit #221, looked on the box.

reznor

My Feedback: (4)

For the sliding canopy linear servo:

I see an L16 35:1 140mm 6V and a 63:1 140mm version. Which one are you guys using?

Speed-RCU

My Feedback: (5)

I see that the spinner from Hangar 9 is on back order and not due until early May. If you did not get one of the units available ( that were fewer in quantity than the number of kits made) what are you using? Tru-Turn, other?

David

speedbrake

Speed-RCU: I bought a Vortech spinner and plan to paint it myself. Just a little more work but leaves me with more money for other goodies for the mustang.

Flying Fiz

Hi,
I have just acquired this model and was going to put in the DLE 55RA as well.

Roger, are you saying that the stand-offs that come with the model are the correct size for the DLE 55RA? That is 12mm? I thought people were talking about 56mm standoffs as working with the 55RA. Sorry if I have it all wrong, but I just want some clarity before I buy the engine. I also haven't measured the stand-offs that came with the kit (ARF) but they look longer than 12mm.

Thanks in advance,

ForcesR

Hi Flying Fiz; sorry about the confusion, I thought I had corrected and made the statement more clear but I must have forgot to save the changes in wording when I reposted and I didn't validate the changes.

The DLE 55RA standard standoffs are 68mm in length; discard the standard DLE 55RA 68mm standoffs, use 12mm shorter standoffs (56mm) that is needed for the H9 P-51 installation; there will be 9mm distance between the muffler and firewall after engine installation.

Roger

Flying Fiz

Got it, perfect thanks Roger.

I'll put in an order for the DLE55RA now.

Cheers.

aehaas

I had a DLE55RA, bought it from my LHS. It would have been a huge job to make it fit. They took it back and gave me an OS GT60. I just put it in, no modifications needed. But I ordered the JTEC rc custom muffer designed for this aircraft and this engine, $129. It is supposed to be a correct fit and stay inside using a PITTS style wrap around design. I should get it shortly. I used the [TABLE="width: 100%"]
[TR]
[TD="align: left"]1" to 1-7/16" Red Engine Standoff Kit SWB 100STOF.
Shown is the unit with a spare 5 inch spinner base I used for centering:
[/TD]
[TD="align: left"][/TD]
[/TR]
[/TABLE]

aehaas

The actuator for the canopy I used was:
a firgelli L16 36:1 140 mm
I am not a video person but I can say it is smooth and the right speed.

aehaas

Flying Fiz

That is great information, and based on fact as well, thanks for posting. I'll go the OS GT60 and the OS 31.8mm stand-offs.

Cheers,

Phil

ForcesR

aehaas; what huge job are you referring to fitting the DLE55RA? The DLE55RA will drop right in using 56mm standoffs, no modification of any kind needed.

Roger

Flying Fiz

Hi Roger,

Can I ask, are you basing that statement on having fitted a DLE 55RA to this model?

marksp

My Feedback: (9)

will the DLE55RA exhaust can clear the firewall when using 56mm stand offs? Any pics to share?

Cheers

Flying Fiz

Marksp

What has become clear to me reading the main threads on this plane is that to this point in time no one has actually fitted a DLE 55RA with or w/out muffler to this model.

We have lots of guestimates and "should fit" comments, but only one person has actually tried and tested the theory. And he has stated that it involved a lot of modification to fit, such that he went to the trouble of swapping his DLE 55RA for a OS GT60, which fitted perfectly, so that will do me. Actual facts and not conjecture.

Maybe the DLE 55RA will fit and if that is what people have then they will have to carry out such modifications, but for those of us who are still waiting to buy the correct engine this factual information is gold! Also with all warbirds, a bit of extra weight up front never seems to go astray.

cordell staker

I have a brand new set of century jet retracts for a 60 ( two stroke) size or larger P-51 Mustang. ( wingspan scale probably 60 to 65 inches.) for sale, NIB.

ForcesR

Hello Flying Fiz; it was not my intention to mislead anyone on the installation of the DLE 55RA. I hope Aehaas posts again in this thread to explain what is preventing the DLE 55RA with 56mm standoffs from fitting and what has to be modified to allow it to be installed. I plan to purchase the H9 P-51D 60cc as soon as I complete the assembly of two other fighters I currently have on the assembly table.

I would be very disappointed with myself if I actually find out that I am responsible for steering people in the wrong direction in purchasing an engine that will not fit the H9 P-51D 60cc Mustang.

My claim that the DLE 55RA with 56mm standoffs will fit is based on the following: I reviewed photos of the H9 firewall mount, and I reviewed photos of other engine installations in the H9. I reviewed the engine installations instructions and photos in the H9 assembly manual. I then used my TF P-51D as an engine installation mock up platform and installed my DLE 55RA with muffler in the TF Mustang. All measurements were taken using the engine mounting space available from the H9 Mustang assembly manual. The mock up installation of the DLE 55RA with 56mm standoffs revealed there would be 9mm distance between the back of the DLE muffler and the H9 firewall.

When aehaas posted that the DLE 55RA would not fit unless a modification was done, I went back to my mock up installation and remeasured the installation and the results stayed the same, there would be 9mm distance between the back of the DLE muffler and the H9 firewall.

I hope aehaas returns to this thread and explains why the DLE 55RA will not fit and what modification has to be done to allow it to fit.

I have reviewed aehaas's photo of his OS GT 60 installation and these two photos, one of a DA 60 installation and the H9 firewall engine mount. I cannot see anything in these photo that I missed that would prevent the DLE 55RA with 56mm standoffs from being installed in the H9 without having to do a modification first.

Roger

fhollahan

I ordered a DA-60 for mine that is shown above in Roger's pics. I am using a Jtec wrap around muffler designed for the TF/H9 P-51 which is well below the firewall. I spent some time looking into the DLE-55RA. It looked tight to the firewall lip to the point that the rear muffler was to close for my comfort and I did not want the heat that close to the firewall. You'll need to get shorter stand-offs made too. Here is a view of the DLE-55RA dimensions. No muffler on it but when I looked at one at the LHS the back of the muffler looked almost in-line with the carb.

vertical grimmace

My Feedback: (1)

I have one of these on a 1/5 FW 190 bird. You can effect the speed if you have servo speed in your radio. At least to slow it down. so you could go with the highest gear ratio, then slow it down to what suits you.

Speed-RCU

My Feedback: (5)

Just a couple of pictures of the OS GT60 installed in the plane with the muffler. Notice that the standoffs are recessed in the motor box. Maybe this is why the measurements for the DLE 55RA don't reflect reality. The muffler of the DLE 55RA hits that lip. Just taking the lip off would not have been enough. Will post more pictures after the cowling has been cut to fit the head and the muffler. No cutting on the side of the cowling will be required.

Flying Fiz

Hey Roger,

I know you didn't mean to mislead but you did. I nearly followed your advice and almost bought a DLE 55RA, thank God I had to do something in the meantime otherwise I'd have one on its way to me. I have now ordered an OS GT60 and I know it will fit, based on actual fact.

It's funny how some people like to help out by pushing their untested theories on others. I for one would have been really pissed if I purchased the 55RA and had the fitment issues that people with the actual engine and actual plane are discovering as opposed to photos, guessimates, mock-up plans and theories.

So Roger, please keep your untested theories to yourself they aren't helpful, in fact their dangerous, particularly when they are stated as fact. Statements made as fact are usually taken by the recipient as having solid evidence behind them, otherwise they would be misleading!!

aehaas

Also, GR7Racer
wrote this on post #581:

"I haven't installed a 55ra in the mustang, but I did hand hold one in place and eyeballed it to see what would be necessary. I have a smaller muffler on mine than the stock one and it looked like it would maybe need a little work on the motor box to get the muffler to fit. It looks like you would either need to shorten the motor box and relocate the firewall back some, or possibly trim the bottom of the firewall and then recontruct the bottom of the box too."

This was my thought exactly.

I can tell you I BOUGHT the DLE55RA just for this model thinking it would fit by the numbers but when I played with it the amount of carving required led me to look elsewhere. The LHS just happened to have the GT60 on hand and suggested I borrow it. It fit, and I bought and installed it.

aehaas

speedbrake

Just wondering why the DLE 55 side exhaust isn't being considered? The stock muffler can't be used but a slim wrap-around one will fit...similar to the one used on the TF mustang.

Flying Fiz

Probably because it looks terrible hanging out the side of the cowl, WAAAY better if its a subtle exhaust out the bottom.

speedbrake

It doesn't hang outside the cowl. Have you tried it? Wow. Misinformation is flying around the thread

Flying Fiz

'
You know I havent tried it, I was saying "probably"...stating an opinion....I don't like side exhausts on warbirds. I like the look of the one or two down pipes centred under the plane. The only side exhaust I've seen on this plane was outside the cowl and it looked terrible, but we all know it wasnt attached to a DLE 55RA. And surely it must stick out of the cowl somewhere, on one side down the bottom I guess.