If it doesn't already have a mixture ontrol (or it's wired full rich), it's probably got a Stromberg carb. Mixture control doesn't do much for these. Maybe save up for a Marvel carb & STC along with the other stuff.
Some engines are prop-position sensitive & some aren't, so do some research before re-clocking it.

Very nice!

150 is mostly right about the carb. The stromburg is self altitude compensating and does a good job so the mixture control doesn't add much. However with your high elevations you will a benefit little from adding a mixture control. I only adjust the mixture if I'm over 10k; below that it doesn't really do much if anything. I really like the stromburg, I find it very efficient and has provided me with 500 hours of trouble free operation but there are a couple quirks to learn.

I've never had an airplane with the Stromberg so I'm just parroting what I've heard. Lack of effective mixture control & leaky needles is the two complaints I've heard most. Never heard the "self altitude compensating" feature attributed to them before. Seems like most folks with them would rather have a Marvel of they had a choice, but maybe the Stromberg is just as good or better once you learn the quirks.

Congrats,
A guy owns a 65 horse Cub at my field. He flies almost every evening, just beats around the pattern, playing. Sure looks like fun!

(If he needs to go somewhere, he pulls out the 195!!)

Mine has stormberg and its wired full rich - been doing as much research as possible. Definitely going to fly it as is for a while and consider carefully what to do. I have a hard time imagining that above 10-12k won't benefit from mixture control. It see,s most people talking about how it doesn't help really aren't flying the mountains and high da.

I just reread my previous post and it didn't read like I meant it to so I'll try again. The mixture control works and is useful above 6k. I only use mine above 10K unless I'm on a long flight and above 8K. I never see an increase in RPM when I adjust the mixture but fuel burn goes down a little.

One problem is that the mixture control arm on the carb is short which makes it difficult to make adjustments; the tiniest moment of the control knob can cause you to go from too rich to too lean. Best way to fix it is to make an extension for the arm, but you IA may not like that or install a vernier mixture control.

I think it is worth doing if you can extend the control arm or install a vernier mixture control.

My home base is at 4700, I frequent strips in the 4000 to 7900 range and regularly cruise above 10k. Not quite as high as your area but still up there a bit.

Follow progress here:

http://share.findmespot.com/shared/faces/viewspots.jsp?glId=0eTGA34gnKajUxCifjR0858ye0j3WFB9D

'soyAnarchisto

Sweet!! Don't forget some trip pics!!

She made it home safe. Tach died so I'm grounded - joys of ownership start immediately!

soyAnarchisto wrote:She made it home safe. Tach died so I'm grounded - joys of ownership start immediately!

Nice on making it home!

Hope your tach issues doesnt become a rabbit hole like mine did! Although, I am glad we found the things we found.

So have you flown it solo at all yet? I only have time in a super cub so front seat solo.

Any radios?

Cool! Glad you made it back home safe!

No solo yet - insurance requires 5 hrs of dual in make/model - I need another 3. My cfi ferried it home for me - I couldn't afford to take off work. I got one trip around the patch before putting her away.

I'm using a handheld sportys SP400 radio. Plane has an external antenna. Also has a microair mode-c xponder and a small battery, but no starter or alernator. Battery is dead and the xponder hasn't been inspected in past 24 mos too - so I'm triple grounded. Hopefully get it all sorted this week - hoping for no rat holes.

Plane has 350 hrs smoh, and 20 hrs since top. Metal McCauley cruise prop on the C-85. Cleveland brakes. Flys great.

When's the next fly-in?

soyAnarchisto wrote: My cfi ferried it home for me - I couldn't afford to take off work.

I'd be interested in the difference between the debit & credit colums!

NimpoCub wrote:

soyAnarchisto wrote: My cfi ferried it home for me - I couldn't afford to take off work.

I'd be interested in the difference between the debit & credit colums!

It's in the red. But I couldn't wait another 2 weeks which would be my next opportunity to go get it myself. He cut me a good deal, but I'm a repeat customer for him.

'soy, CONGRATULATIONS! Can't wait to see it. You'll breeze through the dual in no time--although keep an eye out for inconvenient TFR's in your neighbourhood

Re: your thought on mixture control, you've probably seen the extensive strings on www.supercub.org ; assuming a Stromberg. That's what was on my A-75 powered Luscombe in a land far ago and long, long away, and not sure if it was ever properly set up, but it did fine at 5000'MSL up. The key is to watch gross weight.

One thought, when I replaced the "creepy" mixture on the cubscout 'cub, I went with the "click-stop" style from ASI/Aircraft Spruce, which I believe are OEM on most Citrabias/Scouts. It allows pretty fine tuning of mixture with a positive detent, and is quick and easy to push in or out without the clunkiness or bulk of the verniers; plus it looks more original. Huge improvement for me (but of course on a Marvelous Slobber carb, on the my Supercub...).

Anyway, this is a great time to fly, have FUN!

Thanks. cubscout

Thanks cubscout, she's in the shop now having the 1940 original tach replaced so I'm grounded for the next few days. Hopefully will be in the air soon. It's killing me having a toy that I can't play with.

Congrats on the Cub! You'll love the 85! I've had a Stromberg on my Tcraft with an 85 since I bought it in '85 and love it! Like was said, it's not just like what most are used to, so some don't think it's doing anything, or what they want, when they want. Truth is, it's already done it by the time they think of it...with the exception of idle cut off and an accellerator pump. I wouldn't trade mine for a Marvell ever.
Enjoy that plane!
John

soyAnarchisto wrote:Thanks cubscout, she's in the shop now having the 1940 original tach replaced so I'm grounded for the next few days. Hopefully will be in the air soon. It's killing me having a toy that I can't play with.

Hope your keeping that original tach and going to try to get it rebuilt. I don't know why but I like original gauges.

29singlespeed wrote:

soyAnarchisto wrote:She made it home safe. Tach died so I'm grounded - joys of ownership start immediately!

Nice on making it home!

Hope your tach issues doesnt become a rabbit hole like mine did! Although, I am glad we found the things we found.

So have you flown it solo at all yet? I only have time in a super cub so front seat solo.

Any radios?

When I start thinking about the rabbit hole my airplane is, I go talk to a friend of mine who owns a boat. You know something, airplanes are CHEAP!!!!

Yes it went out today to be rebuilt. I'm conflicted. I kind of wanted a recording tach for record keeping but there are no drop in replacements.

whee wrote:Hope your keeping that original tach and going to try to get it rebuilt. I don't know why but I like original gauges.