Are we still talking about the DLE120? ......My experience with the tapered/seat muffler bolts that DLE uses has been nothing but great!......how about everyone else? .....

Originally Posted by ccpdx

Thanks for the advice guys. I understand the tendency for manufacturers to recommend props that won't overload their engines, but it seems their range is outside of what's considered reasonable, even for a break-in prop. How come?

"Suggested Propellers: 26 x 10, 26 x 12, 27 x 10, 28 x 10"

I wish Xoar made a laminated 29x9. I do like the idea of wood laminate for some reason. I think it looks better, especially at a distance. I'll be new to giant scale - somehow if carbon is the only good option it seems kind of constraining. Maybe it's a mental thing. Wood is also cheaper and easier to justify playing around with different sizes.

Anyone try a Xoar laminated 29x10?

it will work, but doesn't spool up like a 28/10. I have one that I use as a back up.

Originally Posted by tbilotti

Anyone try a Xoar laminated 29x10?

The issue I have with wood props is the compression of the hub due to the screws, and loosening up. The CF props don’t have that problem.

Originally Posted by ghoffman

The issue I have with wood props is the compression of the hub due to the screws, and loosening up. The CF props don’t have that problem.

^^^^^^^^^^^

Originally Posted by ghoffman

The issue I have with wood props is the compression of the hub due to the screws, and loosening up. The CF props don’t have that problem.

If you use a torque wrench that is not an issue at all. I used to use wood props and never a compression issue. Some friends of mine at some of the clubs I belong to use wooden props on their 100cc planes and they have been on there for years. If you over torque the wood props, you will have issues. If you torque the prop properly, you won't

Heck, i still have a Falcon wood prop for my 120. But I like the 27X11 Falcon more so I use that instead.

Where do you find the proper torque values?

Originally Posted by tande

Are we still talking about the DLE120? ......My experience with the tapered/seat muffler bolts that DLE uses has been nothing but great!......how about everyone else? .....

Good results here also.

Originally Posted by iflyrvs1

Where do you find the proper torque values?

I usually use the values DA puts in their manual. But at this point I would email the prop vendor or manufacturer.

Originally Posted by Truckracer

Good results here also.

Seems like the conical bolt has increased surface area, which should be a plus. But also seems like, when you fully seat it, it doesn’t want to turn any further, and I wonder how that effects torque. Gut feeling is that clean threads, proper application of RTV and lock tight, along with a balanced prop (and spinner) and an engine that has not been damaged by a prop strike or crash; all go a long way toward keeping everything together.

Originally Posted by RTK

I don't use any gaskets, also make sure both mating surfaces are flat and true.

Yep. me too. I use some stuff called "Indian Head gasket maker." Brush some on the muffler then the head. Let it tack then tighten down.

Re: “Indian Head gasket maker.”
From the Permatex site....
“The original quality formula, a hard setting, economical sealant. Seals all common gasketing materials in low temperature and low pressure applications. Temperature range -65°F to 350°F (-54°C to 177°C); resists diesel fuels and most shop fluids.”

Its actually listed as a ‘gasket sealant’, not a ‘gasket maker’.
Its intended use is to seal the surfaces to the actual gasket, not create a gasket.
So, make sure you are using a gasket with it.
Just wanted to clarify.

Originally Posted by Demetri

Re: “Indian Head gasket maker.”
From the Permatex site....
“The original quality formula, a hard setting, economical sealant. Seals all common gasketing materials in low temperature and low pressure applications. Temperature range -65°F to 350°F (-54°C to 177°C); resists diesel fuels and most shop fluids.”

Its actually listed as a ‘gasket sealant’, not a ‘gasket maker’.
Its intended use is to seal the surfaces to the actual gasket, not create a gasket.
So, make sure you are using a gasket with it.
Just wanted to clarify.

+1, I remember using this sealer many decades ago and it worked well. Not a replacement for many of the modern gasket maker sealants. I remember the Indian sealer being messy and stinky .... but it worked as advertised ....... much like the original Permatex gasket sealant. Now there are whole lines of gasket makers / sealants based on the Permatex brand name and I doubt the original product is even still available. Today it is important to read the product application literature to determine if a product is suitable for our intended use. 50 years ago, only a few products were available where today, there are probably thousands spreads across many brand names.

Anyone ever change the bearing in one of these ?

Originally Posted by fc227a

Anyone ever change the bearing in one of these ?

Yup.. What would you like to know?