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United States, MN, Minneapolis
Joined Nov 2015
23 Posts
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My first 30% and gasser and I've been out of the hobby for a number of years and building a Hanger 9 Carden Xtra 300 with a DLE 55 and a canister. Question is on mounting the engine as the current build thread on the site has a reference to someone else with one, but no details on it.
So I am I correct that I need to get standoffs that will result in the carb ending up 1" away from the firewall? Also the motorbox (firewall) currently is drilled and has blindnuts installed for a DA60 which should be the same. I assume I need to remove the blindnuts, but most likely will leave larger holes than will be needed for the standoffs. Will this be an issue in mounting/alignment or neglible? Great thread for a newbie Thanks ** Update ** Mounted my current standoffs to the engine and measured that are 68mm long and measured the length from the standoff to the hub face. I then mounted my cowl and measured from the firewall to the front of the cowl which was 6" on the short side. I Still had room for the carb, but my standoffs are about .5" or 12mm too long so I figure I need a 56mm standoff, this will leave me with about a 1/8 - 3/16" between the cowl and the spinner backplate. Now the trick is to find something that will work and bolt up in this size. |
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United States, TX, Garland
Joined Jan 2016
16 Posts
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How Tight is Too Tight?
Mounting a prop on my DLE 35RA and while tightening the prop mounting bolts in an "X" pattern, the lock washers broke and slide out from under the bolt. I'm no gorilla, but I didn't think the bolts were that tight when the washers broke. Is there an issue with these washers, because I replaced them and the new washers tightened down fine.
This is my first gasser with multiple prop bolts. My smaller gassers all just have one prop nut on the crankshaft. McD |
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you may want to consider using a torque wrench and tightening them to the specs.
It would be in inch pounds. In general, you can tighten carbon fiber props more compared to wood props. Although, what you are describing is unusual. |
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For those that do not speak sticks and figures, here's a translation... "Chinese products are not cheap , the quality is far more than most American products ... The main problem lay in where Americans want cheap , do not want to pay for quality ...... supply and demand, if you want cheap , you get cheap will decide ...... however, from the description of the product reconstructed Chinese junk , because you are poor notification. Thank you"
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What strength of thread lock do most folks use on their prop bolts, Medium? McD |
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I have always used lockwashers. Now I use Nordlock/Dynalock washers. I also always use a torque wrench. I picked up a neat little one at Harbor Freight years ago. On wood props I generally use around 62 in-lb torque. Seems to work. With wood props you should check them for the first few flights and keep snugging up the bolts until the wood is fully compressed.
I've been using these instead of a washer+lockwasher on most everything with a bolt lately. Really work well: https://www.microfasteners.com/dynalock-washers.html |
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McD |
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