200 hp Javron

I do have a dyno report on my SAP engine. I even added an improved fuel servo to get 5 more ponies. So yes, I know exactly how much power my engine makes. Maybe that’s a handicap. If I didn’t have a dyno report I could make a number up.

Lycoming does have 215hp models of the 390. They use tuned cold air induction and a different RSA servo to get the extra 5hp. Superior’s IO400 base model makes 215hp but comes with tuned cold air induction and the exp version of RSA injection. With the upgrade to the API 200A servo mine made 220hp, which Superior says is plus 5 from the norm. My servo inlet temp on dyno day was 150*. So much for cold air. Dallas in August. Welcome to hell!

Does Continental run their exp engines on a dyno while in the test cell? I’ve bought a couple of reman engines from Continental and although they were run-in at the factory I never saw any reports from the test runs. The newest Carbon Cub engine is a Superior and is rated at 186hp. Are they providing dyno reports with each engine?

I few pics to show how we have made some progress in reworking the VANS O360 baffle kit. BTW - I have no current complaints as to the fitting of the VANS baffle product. Quality part. Hard to beat their pricing as well.
As you can see I have placed the scat tube heater flange low behind the #4 cylinder. Additionally, we will provide a cover plate over that air exit point flange during the summer months to maintain a volume of high pressure cooling air within the upper chamber transition.
The greater amount of work was done in building out the #3 rear baffle area to allow air flow. Most certified PA18 baffle sets already incorporate this design. Many on the site made this change after their first few flights to beat down CHTs.
Still many more close fitting corrections to do in order to tighten things up. Happy with the direction we are heading.

ELP - pardon the dramatic change in subject matter - I will be taking a no transponder Chief through your area next week. Last time through Approach was happy with us flying right up the reever, but we had a transponder. Are your controllers friendly, or should I plan on skirting under the class C to the north?

[FONT=&quot][FONT=&quot]Bob.

El Paso class C is very user friendly. There are a few ways you can transition the area. However, I would recommend doing something along the south side. Between I10 and the Rio Bravo (US MEX boarder). Stay below 5K. Call as you approach the outer ring. Or call the tower ([/FONT][FONT=&quot](915) 774-9408[/FONT][FONT=&quot]) at your prior fuel stop and discuss with them directly. I have never seen them turn someone a-way under your similar conditions.

[/FONT][/FONT]
[FONT=&quot][FONT=&quot]Hope your flying east this time of year. Or you might being moving backwards in a 11AC. Good luck. PM me if you have problems in ELP. Might be able to help you with a hangar overnight with advanced notice. Safe travels.

[/FONT][/FONT]
[FONT=&quot][FONT=&quot]Shep.[/FONT][/FONT]

Thanks! The phone # is in my flight planner. Yes, westbound. Not the first time Volkswagen Vanagons have passed me.

Interesting point made to me today by Jim "JB" Ball of Titan/Continental: the low compression builds of the X370 do not have counterweights on the crank. Nor do any of the X340 builds. Only the 9.6:1 X370's have the counterweights.
I'm intending to put a Titan IO X370 and a 2-blade constant speed prop - either MT Ultra or Hartzell Trailblazer - in our MOAC build. Was going to go with an X340 for the weight savings (about 12 pounds) until I heard about the "harmonics" or some such issue with composite props that the CC guys were having with the 340's. Am hoping the counterweights will make a difference in smoothness.

cgoldy said:

Actually, that's an interesting question for me. My motor (O-375 low compression from Bart) has rocker covers on it with "Titan" stamped on them. At the risk of sounding ignorant, what does that signify?

Goldy

Click to expand...

JohnnyR said:

Interesting point made to me today by Jim "JB" Ball of Titan/Continental: the low compression builds of the X370 do not have counterweights on the crank. Nor do any of the X340 builds. Only the 9.6:1 X370's have the counterweights.
I'm intending to put a Titan IO X370 and a 2-blade constant speed prop - either MT Ultra or Hartzell Trailblazer - in our MOAC build. Was going to go with an X340 for the weight savings (about 12 pounds) until I heard about the "harmonics" or some such issue with composite props that the CC guys were having with the 340's. Am hoping the counterweights will make a difference in smoothness.

Click to expand...

I didn't find the weight, but this may weight less than the extra 12 lbs of the counterweights.
http://store.balancemasters.com/osC...d=248&osCsid=ff555ca3289bcccfec4c3da5ccb42b58

I believe the counterweights weigh approx 6 lbs.
The 12 lbs referenced are largely from taller cylinders.

A magnesium flywheel saves about 3.5 lbs

EDIT: JB said there's about 12 lbs difference between the Titan 340 and 370, so perhaps 4-6 lbs in counterweights and ~6lbs in taller cylinders?

skywagon8a said:

I didn't find the weight, but this may weight less than the extra 12 lbs of the counterweights.
http://store.balancemasters.com/osC...d=248&osCsid=ff555ca3289bcccfec4c3da5ccb42b58

View attachment 59923

Click to expand...

I have a 370 low compression and had the counterweight crank added to the build as the whirlwind composite prop was supposed to have them. Believe i was told 4 pounds additional for Counter weights. If you do the weight addition from the 340 to 370 and the additional 7 hp difference the hp to weight ratio favors the 370. Additionally the torque on the 370 will exceed that of the 340. My O370 exp cub at 2300 pounds still outperforms my previous 150 hp cub at 1750 pounds in getting off the ground. Of course lots of different factors but big difference.

Counterweights are for the crank. The Balance Master is for the prop.

Does Titan offer a front governor mount on the 370?

Johnny, I own Jerry's ELP Javron Cub with the Titan X370, 9.6:1 pistons and counterweights. It's a very smooth running O360 based engine. I'm happy to answer any questions you may have, or if you're ever near Colorado Springs you can come fly it. I currently have a Catto 84x45 prop but considering a Sensenich ground adjustable STOL propeller.

Yes

stewartb said:

Counterweights are for the crank. The Balance Master is for the prop.

Does Titan offer a front governor mount on the 370?

Click to expand...