I'm getting exited for caveman and summer flying in general.
My new prop is supposed to arrive from Catto on Thursday. Its a 80" 50 pitch.
Catto says it adds 15% to the thrust over the stock catto 78" 54 that has been coming on Carbon cubs as the standard climb prop.
So thats 850 lbs static thrust on a 925 lbs plane should =
If anyones intersted i'll post a report after i try it out.
Blu

Does it have the NLE on it?

Ya its got the nickle leading edge just like my old one. Cant say enough good about that. I used it like a weed eater and theres not a nick on it.

Blu wrote:Ya its got the nickle leading edge just like my old one. Cant say enough good about that. I used it like a weed eater and theres not a nick on it.

Glad to hear that...what a pain that whole deal was. Looking forward to seeing how you like the new prop. I've heard good things about it and the new whirlwind.

Love to hear a report on it. Thats going on 0-340 right?

gdafoe wrote:Love to hear a report on it. Thats going on 0-340 right?

Ya, well CC-340....but yes.

Not sure I know the difference in power and performance. Maybe you can help me with that. I'm running a 340 in my Backcounty Cub and have been watching the Catto with interest.

gdafoe wrote:Not sure I know the difference in power and performance. Maybe you can help me with that. I'm running a 340 in my Backcounty Cub and have been watching the Catto with interest.

Basically think of it as a 340 with a half capacity, light-weight sump; electronic ignition (no mags), 180hp, and at some point, a light-weight accessory gearbox...that might be in production by now. I don't remember the weight difference but it was noticeable from a regular 340. Craig Catto makes great props, and if there's an issue with one, he'll take care of it. Though sometimes the timing is slow, since he's pretty busy and a small business.

So it sounds like it is a bit lighter weight ECI 340 ECI claims 177hp. Does the 180 HP rating mean anything in particular or is CC just rounding it off. Maybe a little more power because of the Electronic Ignition? So would it be right to assume that if the CC 340 would pull X lbs the ECI 340 would do the same?

gdafoe wrote:So it sounds like it is a bit lighter weight ECI 340 ECI claims 177hp. Does the 180 HP rating mean anything in particular or is CC just rounding it off. Maybe a little more power because of the Electronic Ignition? So would it be right to assume that if the CC 340 would pull X lbs the ECI 340 would do the same?

I'd say so. Basically ECI builds the 340, sends it to CC, they have another shop redo it with CC's parts. I don't remember the exact number, but it weighs less than 250lbs.

Tadpole wrote:

gdafoe wrote:So it sounds like it is a bit lighter weight ECI 340 ECI claims 177hp. Does the 180 HP rating mean anything in particular or is CC just rounding it off. Maybe a little more power because of the Electronic Ignition? So would it be right to assume that if the CC 340 would pull X lbs the ECI 340 would do the same?

I'd say so. Basically ECI builds the 340, sends it to CC, they have another shop redo it with CC's parts. I don't remember the exact number, but it weighs less than 250lbs.

Gdafoe what Prop are you running on your Cub Now?

I dont think the 180 hp means anything. In talking to Catto I think he figures 170-175hp is closer to what the 340 really makes. I can't recommend Catto strongly enough, easy to work with and really stands behind his product. If he has a fault its getting a little behind on shipping but they have been worth the wait. I feel like my plane really preforms well as it is, If this new one is even close to the preformance he is quoting it should be amazing. Hope to test it friday if it arrives on time.


FYI when I was ordering my new prop he told me they had just finished up i belive an 84' 42 pitch that on a 360 in head to head testing with the borer was like 20% better on thrust and 3% faster in cruise and of course way lighter and with the nickle steel incomparable more durable.

I have a Sensenich 80 x 42 on it now. It does everything I need it to do but........keep drooling over the catto and watching as he seems to keep dialing it in better and better for these airplanes. Ones of these days I'll upgrade the prop. Now if he'd just develop a ground adjustable for a real reasonable price.

FWIW Aerosport Power (Bart) sez 175hp for his fixed pitch O-340 & 185 for the c/s. Does he build the 340 for CC?
Does anyone know what type of prop was on the Glasstar that (apparently) threw a blade in Cladwell ID last week?

hotrod150 wrote:FWIW Aerosport Power (Bart) sez 175hp for his fixed pitch O-340 & 185 for the c/s. Does he build the 340 for CC?

Yes he does. The CC340 comes from ECI, then goes to Bart with CC custom parts, Bart does the changes and tweeks and sends it back for installation at CC.

Well its on the plane taking out for a test drive in the morning

Which length and pitch Catto would you recommend for a 160hp cub for a climb prop?

Prop update

Put the new prop on, it was very quiet and made a lot more thrust at any given rpm all good..... But it would only turn 2350 rpm static and i felt like that was to low and not delivering all the takeoff it could.

I talked with Craig and he agreed that it was a little to low and offered to repitch it and try for about 2500 rpm static.

Got it back and took it to caveman and found myself in the crappy position of getting just what i asked for and not liking it.

It turned right at 2500 rpm like id asked but it was much louder (even at the same rpm) and just didn't "feel" right to me or deliver the extra climb i had expected.

So talked to Craig @ Catto somewhat sheepishly last night . Once again i was blown away by his commitment to customer satisfaction and just raw enthusiasm for his product.

He didnt try and tell me i was wrong or that it was doing what i asked so "sorry".
He was concerned, listened to my very vauge explanation of it not feeling as powerful and smooth as before and decided that the repitch had not worked out. So he is sending me a new prop, a 80"x49 no charge and letting me keep the old one until it arrives.

I'll let everyone know how the new one is once it gets here .

But just wanted to relay the story of what i felt was a great example of how a good business should be run.

Craig just sent me some photos this morning of the 80", looks nice.

Well i got the new prop on, its great!

added back 7-12 mph depending on rpm its very smooth and it climbs 1500' per minute at 6000' on a hot day.

But even more than that it has a great feel and just works with the plane.

I had it dynamically balanced but it only needed a couple grams on the fly wheel and i couldn't feel much difference.

Really confirmed my thoughts that the repitch didn't work for whatever reason.

The old 78" 54 pitch was a good prop but i think this is an improvement.

Can't wait to go on a little trip with it.

Guess i should also add it was very pleasant to work with Catto on this. So nice these days to have someone back their product and make things right.