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Old 10-18-2019, 11:33 PM
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White Rose titanium axle

I had a quick question. I’m looking at purchasing a set of the white rose wheels and I also see the titanium axles that they sell. Is there any special reason that these are so much better than the regular axles?
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Old 10-19-2019, 05:47 AM
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I think it's just that they are considerably lighter being made out of titanium, and not using wheel collars. I can't think of a way to make a lighter axle. Titanium is also a lot harder to machine. And of course way stronger. Would love to have some but for me they are in the category of diminishing returns for the money.
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Old 10-19-2019, 07:21 AM
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The White Rose wheels are the best ever and that is all I use, but the axle are only
1/4 oz lighter per set than Dubro and I have had a keeper let go of a wheel in flight and the
other side broke on take of (of all places). I have zero trouble using larger Dubro axles
and Ace hardware collars (they are much better than any others collars out there).
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Old 10-19-2019, 07:25 AM
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Have been using the same set of WR TI axles on my Carden Pro since 2013 without a single issue. Well over 1000 flights at this point. An axle is only as strong as your landings are hard... lol
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Old 10-19-2019, 07:31 AM
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The WR axles are a very cool design. I've used them on a few airframes. No wheel collars and very light weight. The downside is, titanium more brittle than steel. It is stronger, but it will snap when steel will bend.
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Old 10-19-2019, 08:43 AM
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I like the WR axles over Dubro for the fact that the hole being drilled into the gear is way smaller. WR is about a 3/8” hole drilled into the gear compared to about 1/2” for the dubro. Most 40% carbon landing gears are tapered to around 1-1/2” down by the axle mount area. Most of my iMac 40% planes are WR axles, 4.5” dubro wheels and J&J direct drive titanium tail wheel assembly.
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Old 10-19-2019, 10:54 AM
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Quote:
Originally Posted by eheliflyer View Post
Have been using the same set of WR TI axles on my Carden Pro since 2013 without a single issue. Well over 1000 flights at this point. An axle is only as strong as your landings are hard... lol
Ya but 4 flights in six years don't count!!
Besides, there is a thread on FG somewhere about all the shortcomings of the wr axles..
(and it wasn't from a hard landing.....you believe me right?)
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Old 10-19-2019, 11:07 AM
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Over a 1000 flights is over a 1000 flights no matter how long it takes... LOL Besides that, I have seen you "IMAC" guy's land... LOL

I will say that if you do not have your wheel as close to the hub as possible you will increase the chance of having a failure.
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Old 10-19-2019, 02:00 PM
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I use white rose wheels on everything but I have only used one set of axels... everything else I use 1/4-20 Allen head bolts... grade 8 of course... but I haven’t had an issue with them in nearly 10 years. I can get a “box of axels” from McMaster 100 for $6
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Old 10-19-2019, 02:26 PM
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Titanium alloys have higher notch sensitivity than spring steel. This simply means that it will fail at a sharp edge, such as when a sharp groove is machined in to the titanium alloy axle for the retainer. Spring steel will fail at a notch, too, but it is more resistant. For me, the trivial weight savings of titanium axles doesn't offset the increased failure risk. I don't much like wheels falling off. The wheels are really nice, though.

Super Rookie - thanks for the ACE hardware store tip on the wheel collars.

FWIW, I do have a pair of WR 5" spiral spoke wheels that came with a used plane. They are too large for any of my current planes. They can definitely stand being polished up. PM me if you are interested. I have been too lazy to post them for sale.
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Old 10-19-2019, 07:36 PM
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Originally Posted by RCAddiction View Post
Titanium alloys have higher notch sensitivity than spring steel. This simply means that it will fail at a sharp edge, such as when a sharp groove is machined in to the titanium alloy axle for the retainer. Spring steel will fail at a notch, too, but it is more resistant. For me, the trivial weight savings of titanium axles doesn't offset the increased failure risk. I don't much like wheels falling off. The wheels are really nice, though.

Super Rookie - thanks for the ACE hardware store tip on the wheel collars.

FWIW, I do have a pair of WR 5" spiral spoke wheels that came with a used plane. They are too large for any of my current planes. They can definitely stand being polished up. PM me if you are interested. I have been too lazy to post them for sale.
I could perhaps be enticed on your 5"ers
520-954-0021
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Old 10-19-2019, 10:48 PM
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I could perhaps be enticed on your 5"ers
520-954-XXXX

Sold to Randy!!
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Old 10-20-2019, 06:33 AM
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I'll go against the grain and say I've bent several sets of 3/16 WR titanium axles, but I'm using them on a 100cc. Nothing but butter smooth landings, I switched to DuBro 3/16 axles with the old faithful White Rose wheels.
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Old 10-20-2019, 07:03 AM
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Quote:
Originally Posted by Carruthers43 View Post
....(snip)... everything else I use 1/4-20 Allen head bolts... grade 8 of course... but I haven’t had an issue with them in nearly 10 years. I can get a “box of axels” from McMaster 100 for $6
Exactly!
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Old 10-20-2019, 08:17 AM
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Never an issue here with WR axles and tires(have worn out a few sets of tires) or any other WR product on my 40 and 50% planes
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