Ixtrim

Perfect!!!
Photo 1 : i will close the inlet of the cooler
photo 3: isolate the carbs totally. the second one will get to hot.... and if the inlet of the carb is to near the cowling, you can cut it down.
Photo 4: for better cooling you can install a spoiler so the air get sucked out!

all install is perfect!

peter w h

Hi Guys,

[QUOTE=Salte;11957318]Nice Do you have more info on the PPG Liquid metal?

I think this is the product.
http://www.automotivepaintandequipme...quid_Metal.pdf



DrScoles - Your Mustang looks fantastic ! Good to see the Firgelli actuator worked out for the canopy.

Ixtrim - What is the base colour of your P47 "Snafu" I am assembling a CompArf P47 and will be doing the same scheme.

Peter H.

Ixtrim

Olive drab and neutral grey!

kimhey

Thanks a lot Lxtrim! I will follow your "instructions".

Two questions:
1. When you say isolate the carbs completely, do you mean that I should wrap them in heat reflecting material, or isolate them so that they get their own "air in/out" system? If heat reflecting, maybe this can be used (photo attached at bottom)?

2. The formost exhaust pipe sticks out a bit too much to my liking.... Can I cut it flush with the cowling, or are there resaons not to do this?

Kim

Ixtrim

This is the Isolation material is perfekt! Own Airflow is not needed. Look aT facebook:
https://www.facebook.com/pages/CARF-...43851622437295

this Cooling was made by me.

Tomorrow when i back in Office i Send You photos of mY exhaust.
I did 20mm Pipes On the Original an they go Out on the right side. They Only look 1mm Out of the cowling. So no problem so far....

DrScoles

My Feedback: (18)

Kim, The Spit looks awesome! It looks like you have more room than I did in the mustang. Wondering if the scale of the Spit is slightly larger than the mustang? I really wanted to do the spit, but now that the mustang is painted, I'm happy with the decision. I would like to do the spit some day though.


And Tom, why didn't you share that FB site earlier!!

Ixtrim

Sorry doc i forgot
a cool guy from Swizerland. He came to me for Building the cooling becaus his first Test destroyed the engine.
The Scale exhaust is a big Desaster. Don't do this... To expensive. To much work And problems.

All you planes are awesome. My Spitfire is sold And i Wait for my Mustang!
You can see our planes here:
https://m.facebook.com/profile.php?id=269947066511026

or Visit my on facebook:

https://m.facebook.com/profile.php?id=100004747412364

DrScoles

My Feedback: (18)

I wanted to try the scale exhaust, but the electric starter would make it near impossible. So, I'm still going to use them, but just for looks. I'll grind off the backs of them and glue them to cowl. At the time, I really thought the scale exhaust would be cool, then once I figured out how much work it would be…. not so cool anymore ;-) All thats left on my mustang is the checkerboard, then the decals….

Ixtrim

Think about the Very high Temperature of the exhaust pipes.... Glue will be not enough. Because of Isolation, the endpipes get extremly hot.
After one flight you have to Wait about half an Hour because the Heat under the cowl is to high for the carbs.
but.. Of course it is cool

DrScoles

My Feedback: (18)

Makes sense. Once they're cut flush with the bottom of the cowl, you aren't gonna see the two exhausts in flight, or even on the ground for that matter. I think I'll have the plane ready for Summer, hopefully by spring.

kimhey

Ok Lxtrim (are you Thomas Gass?), here are my modifications..... tell me if there are things I still need to change

I may have over-done the heat protection, but I can remove some if I need to adjust any needles. The spoiler is 2cm into the airstream, but I wonder if the angle is correct.

Is it an option to cut out openings in the side panel, to supply the carbs with fresh cold air? (and cover the holes with metal mesh)?

My "air out" exit hole is bigger than the photos I saw on the FB site you referred to, but that is ok? (just not very scale like).


Kim

Ixtrim

Hell Kim (yes im Thomas )

your installation looks good. cut out the adjust-needles. will be easier to handle. you can also isolate the exhaust-pipes. will be less arm unter the Cowl.
your spoiler also looks good!

fresh air for the carbs i did in my spit with IL135. but, don´t make holes... make little intakes. i will search for Photos of it.
also i show you how i did with the exhaust pipes. i don´t like the first pipe in front of the cooler...

Ixtrim

inside i had a little piece of litho, whitch routed the air directly to the carb.

kimhey

Thank you Thomas, I am so greatful for your willingness to share your knowledge and experience )


Kim

Salte

Wery nice Kim:-) are you going to Fagernes with this spit?Geir

kimhey

Haven´t check my work schedule yet, but will be there if I´m off work!

20.-22. Mars, is it?

Salte

Yes 20-22 mars:-)

kimhey

Guys, Is this ok, or am I way off in some way?

There are 30mm aluminium tubes glued to the side panel, sticking just inside the extra part mounted/screwed on to the carbs (my Moki does not have one mounted). The cut out in the side panel is bigger than the opening inside the carb, so there should be enough air supply to the carbs.....I hope.

Some will think I have ruined the scale look, but I am ok with this. Compromises .....


Kim

Ixtrim

if you don´t like the openings... close it. you will not need it... it works also without.

kimhey

Thanks

Craig B.

Hi Guys, some great info on this thread.

One question.....why not duct incoming cool air over the carb side of the engine and exhaust the hot section on the other side to the carbs? that way the carbs are always in the cool airflow side of the system.

kimhey

Craig, I have been thinking the same during my cooling construction/build. I just got back inside, after my very first testrun with my Spitfire/Kolm 135. I tested both without the cowling completly closed, and with the side plates off. I took some video/photos as well (incl telemetry data), and will edit it before posting later today

kimhey

Ok, here is the video/photos. Please comment.....it seems the engine runs fine after 2 minutes, but rich after 3+. I thought engines usually run leaner when getting hotter?

https://www.youtube.com/watch?v=01gjVVzO70s

Temp 1 is sylinder... yes 1, and temp 2.... you get it
Some photos showing how the sylinders cool down (side panels kept on during cool down):

Salte

Wery nice Kim the spit is a wery good looking airplane! Starting to regret selling mine

DrScoles

My Feedback: (18)

Kim, can you redo the video in fahrenheit...;-) :-) ... So you got 250 on one cylinder, is that an acceptable temp? 50 degree difference from front to back, that seems tolerable. It will probably be a few months before I get mine back together, still a lot of finish work to do. Thanks for sharing the video and your experience with it. I read that these motors were broken in at the factory can that be verified??