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Author Topic: CJ-3B  (Read 138782 times)

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Offline jpet

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Re: CJ-3B
« Reply #210 on: March 07, 2016, 11:13:46 AM »
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The rubber "Silent Blok" bushings� actually provide� greater flexibility than the modern urethane bushing.
... not on my jeep.� What are you basing this on?
Edit:� The urethane bushings do not have an outer metal sleeve like the conventional rubber ones so the urethane is thicker, plus they have urethane side flanges which allow for perpendicular flexibility, plus they are greasable.� It only stands to reason that they would be more flexible.
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....But the Silent Bloks will more readily be destroyed as compared to urethane bushings when used under adverse conditions.
That I can believe

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Flexed hard and often the "Silent Bloks" could certainly wear out (delaminate) within a years time.
In my experience, one hit with a "C" shackle against a rock and it's toast so the potential for them to have to be replaced is greater than 1 per year. ...... For regular trail riding where the "C" shackles are not susceptible to hard collision, I would agree they would be a better choice due to their longevity.� I think Bob has proven that his will be in harms way.
« Last Edit: March 07, 2016, 01:13:32 PM by jpet »
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Offline oldtime

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Re: CJ-3B
« Reply #211 on: March 07, 2016, 07:42:29 PM »
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... not on my jeep.� What are you basing this on?
Edit:� The urethane bushings do not have an outer metal sleeve like the conventional rubber ones so the urethane is thicker, plus they have urethane side flanges which allow for perpendicular flexibility, plus they are greasable.� It only stands to reason that they would be more flexible.

Well I thought it should be obvious that the rubber is softer quieter and has far greater memory than does urethane.
True that the urethane bushing is much thicker but the memory is no where the same.

Anyway I do agree that urethane will definitely give the best results on a� frequently and well flexed suspension system.

The rubber bushing is ok for normal use but becomes useless soon after the rubber tares away from it's metal sleeve.

« Last Edit: March 07, 2016, 07:43:02 PM by oldtime »
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Offline Bob W

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Re: CJ-3B
« Reply #212 on: March 07, 2016, 08:29:55 PM »
This past Saturday I drove over to PA for the Annual Redball Jim Thorpe Militaria & MV Parts Swap Meet. It is the first show of the year for me and gets the enthusiasm back up after the winter. I also stop by Walck's in Bowmanstown for a visit with Carl and Dan. I picked up a "new" NDCC tire for X98's spare at the show. Looks like it has never been on the ground, the rubber is soft, and is probably at least 20 years newer than my current spare tire.

« Last Edit: March 07, 2016, 08:30:46 PM by Bob_W »
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Bob W

Offline Bob W

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Re: CJ-3B
« Reply #213 on: March 10, 2016, 08:29:58 PM »
Progress. Got one "top bow" bent up today. Still need to bend another top bow and a front hoop. The tube bender really makes nice bends, thanks for loaning it to me Jeff!!!



« Last Edit: March 10, 2016, 08:30:58 PM by Bob_W »
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Bob W

Offline Bob W

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Re: CJ-3B
« Reply #214 on: March 11, 2016, 08:46:02 PM »
Slowly making headway. Made up another "top bow" today. Replaced the leaking water pump. So many projects, so little time.
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Bob W

Offline Bob W

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Re: CJ-3B
« Reply #215 on: March 12, 2016, 07:27:09 PM »
More work on the roll cage today. Made up some angle iron supports for the top of the rear wheelhousings. Trimmed the front top bow to length.




Did a little adjustment on one of the bends with my custom tube bender.




Starting to tack weld things together.




A bit of adjustment on the rear bow.




Test fit of the top on the bows. There are still a lot of missing pieces in the cage.

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Bob W

Offline garage gnome

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Re: CJ-3B
« Reply #216 on: March 12, 2016, 07:39:05 PM »
Looks good Bob. So going M606 style, eh?
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Offline Ryan_M

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Re: CJ-3B
« Reply #217 on: March 12, 2016, 07:43:15 PM »
Custom tube bender! WICKED DECENT!!
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Offline Bob W

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Re: CJ-3B
« Reply #218 on: March 12, 2016, 07:49:37 PM »
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Looks good Bob. So going M606 style, eh?

The canvas is actually an M-38 enclosure. I wanted something that is (relatively) easy to install and remove. That eliminates original CJ tops!
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Bob W

Offline Bob W

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Re: CJ-3B
« Reply #219 on: March 12, 2016, 07:50:46 PM »
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Custom tube bender! WICKED DECENT!!

Very inexpensive too  ;D
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Bob W

Offline jpet

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Re: CJ-3B
« Reply #220 on: March 12, 2016, 09:25:11 PM »
Looking good!  I like how you refer to them as "bows" since that is the idea. How wide are they at the top?
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Offline Bob W

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Re: CJ-3B
« Reply #221 on: March 13, 2016, 08:11:26 AM »
They are 57" wide at the top and taper in to fit inside the tub rails at the base.
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Bob W

Offline athawk11

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Re: CJ-3B
« Reply #222 on: March 14, 2016, 10:05:06 PM »
I really do like the way these "Bow Bars" are turning out.  Cool way to have it both ways. 8-)

Tim
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Offline aboyandhisdog

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Re: CJ-3B
« Reply #223 on: March 14, 2016, 10:27:02 PM »
Bob, I'm not sure how they attach to the tub.  I have to assume they are easy-off and easy-on.  Do you have a pic of attachment?  Why not just do an M-38 bracket?
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Offline Bob W

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Re: CJ-3B
« Reply #224 on: March 15, 2016, 08:41:20 AM »
This is primarily a roll cage to protect the occupants so it is not removable. A secondary feature is that it supports the canvas enclosure without the need for regular top bows. It uses conventional CJ roll bar style angle plates bolted to the top of the wheel house and the body side panels. It's not even close to being done yet, still have to make up a bunch of components and weld them together.
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Bob W
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