08-05-2010, 05:41 PM | #21 |
RCC Addict Join Date: Jan 2008 Location: Mount Juliet
Posts: 1,287
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Mine arrived about 30 minutes ago. They really are well done. Hopefully I will get them installed tomorrow. Kenny....that is a great idea to sleeve the inner tube. I may follow your lead on that.....may hit McMaster tomorrow on my lunch to grab a few lenghts of aluminum tube. Great idea. EDIT: Going to grab a 6' length of this tomorrow: http://www.mcmaster.com/#aluminum-tubing/=8a01xf Like I needed another excuse to hit McMaster. I needed material for attaching the new trim router to the soon to be coming CNC machine anyway. Last edited by xirtic; 08-05-2010 at 06:07 PM. |
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08-05-2010, 08:28 PM | #22 |
Quarry Creeper Join Date: Sep 2006 Location: Phoenix
Posts: 477
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That was fast. My tubes showed up today. Nice work... |
08-05-2010, 10:39 PM | #23 |
I wanna be Dave Join Date: Oct 2007 Location: 801
Posts: 2,941
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Great idea Kenny!!!! One reason I love the people in this community is they are always looking for a way to make a great product better!!!! I may have to implement that idea into the possible berg tubes on deck! |
08-06-2010, 07:49 AM | #24 |
Picky Fab'r/Acetal Junky Join Date: Jul 2006 Location: Arizona Desert/AJ
Posts: 3,073
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I see McMaster carries tubes in stainless, brass, and alum that's .2812" OD...that's only .0017" larger that the ID of the Bully tube. The .250 tube would be a touch too small. It should be easy enough to "bore" out the ID of the Bully tube that tiny bit so that the sleeve tubing will have a nice interference fit when you slide it in. |
08-06-2010, 09:16 AM | #25 | |
RCC Addict Join Date: Jan 2008 Location: Mount Juliet
Posts: 1,287
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I am leary about boring any material (although very slight) from these units. I just got back from McMaster with the 1/4" aluminum tube. There is a little bit of play, but I think that it will still be of a benefit in the event that the Delrin axle tube bends. I will try this method just as an added possible breakage prevention step. The .2812" material is probably the better choice. I will probably slightly flare the ends of this 3003 aluminum, and make certain that the aluminum tube just touches the bearing. | |
08-06-2010, 09:23 AM | #26 | |
RCC Addict Join Date: Jul 2009 Location: Reno, Nv
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08-06-2010, 09:35 AM | #27 |
I wanna be Dave Join Date: Sep 2005 Location: Houston, TX
Posts: 16,952
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08-06-2010, 09:53 AM | #28 | |
Picky Fab'r/Acetal Junky Join Date: Jul 2006 Location: Arizona Desert/AJ
Posts: 3,073
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.0017 is such a small amount. | |
08-06-2010, 12:15 PM | #29 |
Quarry Creeper Join Date: May 2007 Location: home
Posts: 369
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My thoughts are if you fall hard enough to break delrin you are gonna bend the aluminum.
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08-06-2010, 12:24 PM | #30 |
I wanna be Dave Join Date: Sep 2005 Location: Houston, TX
Posts: 16,952
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I am not sure why you guys are worried about the delrin tube. IMO, if anything is going to break, it will be where the tube mounts to the gear case. This was the same issue we had with the clod axles and why they required braces....
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08-06-2010, 01:47 PM | #31 |
I wanna be Dave Join Date: Jan 2009 Location: laying low
Posts: 2,508
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I don't think breakage is gonna be a big issue? We had one tube fail and it was on a really heavy rig that dropped off a ledge just "right" 1st thing to hit was the rear...I can tell you I have taken a few really hard falls...2 of of witch I would consider "big" falls at the rojo comp..mine did not break... I know in "comp" you don't want to touch of save your rig most times...and I do not save mine in "comp"...but while regular practice running I would suggest not letting your rig fall off a five foot ledge and you should be ok... These are strong tubes....but nothing that's plastic is bomb proof/cliff proof. |
08-06-2010, 01:57 PM | #32 |
Rock Crawler Join Date: Sep 2008 Location: Utah
Posts: 691
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08-07-2010, 02:49 PM | #33 |
I wanna be Dave Join Date: Sep 2005 Location: Houston, TX
Posts: 16,952
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I got mine in today....very nice work guys! |
08-07-2010, 06:58 PM | #34 |
RCC Addict Join Date: Jul 2009 Location: Reno, Nv
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08-07-2010, 08:11 PM | #35 |
I wanna be Dave Join Date: Sep 2005 Location: Houston, TX
Posts: 16,952
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08-09-2010, 08:42 AM | #36 |
Rock Crawler Join Date: Nov 2009 Location: Wildwood
Posts: 502
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I am also paypal ready for Berg tubes. You need testers, right?
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08-09-2010, 09:04 AM | #37 |
I wanna be Dave Join Date: Oct 2007 Location: 801
Posts: 2,941
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Finding testers is the easy part! |
08-09-2010, 09:06 AM | #38 |
RC Axle Master Join Date: Mar 2008 Location: Las Vegas
Posts: 517
| Not true, the delrin is going to break at the gear case unless there is a nice raduis between the flange and the tube. I have broke delrin wheels and the aluminum tubes were just fine.
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08-09-2010, 09:15 AM | #39 | |
I wanna be Dave Join Date: Sep 2005 Location: Houston, TX
Posts: 16,952
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BTW, I hear you on the broken delrin wheels. I've got two under my belt so far... Last edited by JeremyH; 08-09-2010 at 09:19 AM. | |
08-09-2010, 12:11 PM | #40 |
Quarry Creeper Join Date: May 2007 Location: home
Posts: 369
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I meant my comment like if you fall hard enough to break the delrin the aluminum will bend because i don't see the delrin breaking. It looks like its machined from a solid piece and would handle some major abuse.
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