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Tunnel trans into early bus: center mount option?
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EverettB Premium Member
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PostPosted: Mon Jul 12, 2010 5:07 pm    Post subject: Reply with quote

Not sure if this applies here but from what I have seen, studs were used in locations where you would not want to be removing and installing a bolt, possibly multiple times, as it would fatigue the metal used.

Install a stud once and put the pressure on just pulling on the stud rather than both turning and applying torque at the same time.
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cdennisg
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PostPosted: Mon Jul 12, 2010 6:23 pm    Post subject: Reply with quote

Sounds reasonable to me. Thanks Everett.

Anybody know the torque value of the RGB to springplate bolts of the top of their head? I have things bolted in loosely right now, and I will be doing the brakes and rear axle seals in a few minutes. Then I will methodically go around and tighten and inspect things to make sure all is well. I installed a valve cover vent system today, too, mounted to the top of the trans with some home made brackets. I need to find the thread that shows the modification to the early parking brake cables to fit the later brakes.
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PostPosted: Mon Jul 12, 2010 6:33 pm    Post subject: Reply with quote

72-87 ft lbs.

From
http://www.thesamba.com/vw/archives/manuals/61guesswork.php
page 76-77
http://www.thesamba.com/vw/archives/manuals/61guesswork/page7677.jpg
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PostPosted: Mon Jul 12, 2010 11:08 pm    Post subject: Reply with quote

Thanks again Everett.

Trans is in. Bolts are tight, everything is adjusted. Brakes and cables will be dealt with tomorrow, then it's engine install time. I'll report back with any findings, discoveries, crashes, or maiming.
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PostPosted: Tue Jul 13, 2010 1:46 am    Post subject: Reply with quote

EverettB wrote:

Install a stud once and put the pressure on just pulling on the stud rather than both turning and applying torque at the same time.


Correct,
when installing the stud you put no stress on the aluminium/magnesium case.
when then installing a nut the case itself gets only pulling force.

With a bolt you pull and turn on the case, which will destroy the tread.
(unless you use a helicoil offcourse)
(I think in Englisch that is called shear pressure)
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PostPosted: Tue Jul 13, 2010 9:06 am    Post subject: Reply with quote

I got the mount installed yesterday, and I swapped out the studs for four longer ones. Thanks for all the help on that one folks.
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PostPosted: Mon Nov 15, 2010 5:24 pm    Post subject: Reply with quote

I was just reading this entire thread and enjoying every page. Then it stops dead on July 13th? What happened? How did it end?
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PostPosted: Tue Nov 16, 2010 8:12 am    Post subject: Reply with quote

krusher wrote:
happyhippo wrote:
cdennisg wrote:

Image may have been reduced in size. Click image to view fullscreen.


Not sure what that mount costs from GB, but I may try to fab one and not worry about the front mount on my future project. Worth a try anyway.


This pic looks like there is still a front mount with this whole setup. Is that still necessary? Also, this is a tunnel tranny into a tunnel tranny bus. Will this setup work for a tunnel tranny into an early split-tranny bus?



Is this gold one Berg, those welds are awful Shocked


it is a modified Gene Berg mount. the 2 verticle sides were cut at 90 degrees to pipe and was rewelded which do not match berg welds. i believe the guy lives here in san diego,ca-usa
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PostPosted: Thu Aug 11, 2011 1:08 pm    Post subject: Reply with quote

Andrew wrote:
chrisflstf wrote:
If you are worried about parts obsolescense, you should buy your spare parts now, rather than wait 20 years


Laughing I'm just saying I like planning for the future. Same reason I like disc brake kits that use off the shelf parts rather than custom made parts. If the (one) company that makes the parts goes out of business, what are you going to do when you need a new rotor? Parts are never lifetime parts...


of course you realize you can get Berg Rubbers from 1978 bus upper mount for trans?? used longer than the pad mounts that were replaced by mounts that do not use the cradle like 67 and older in old speed design.
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PostPosted: Thu Aug 11, 2011 1:13 pm    Post subject: Reply with quote

mightymouse wrote:
chrisflstf wrote:
Quote:
Yeah, the nose of the trans goes DOWN. The trans thinks you are backing up all the time. The reductions then convert that to forward motion. The pinion is trying to climb DOWN the side of the ring, not UP as in a Beetle based setup. Why do you think the rear end raises? or when you wheelhop offroad your apron seal ends up UNDER the rear tin? Because the engine goes UP.
OK... is that clear enough? (without being a super dickhead)


Movement in the nose cone is not limited to only 1 direction. In a design such as ours, the motor is cantilevered off the trans. The nose cone wants to see/saw up and down when you are on and off the gas. I'll stick with my Berg modified rubber center mount - I know it works as I drive it Very Happy


Yes BUT 90% of its force is applied down ( if your redux). as you drive forward most of the time dont you? lol. Razz


the only problem i see is the stupid front nmounts keep breaking. that is why i recommend using a berg type mount.
the quality of front mounts availible is not the same as was factory install in 1964 when my 65 bus was built. panels are the hotrod in vw buses while 21/23/windows & westies are the edsels of vw world.
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PostPosted: Thu Aug 11, 2011 1:53 pm    Post subject: Reply with quote

bill may wrote:
Andrew wrote:
chrisflstf wrote:
If you are worried about parts obsolescense, you should buy your spare parts now, rather than wait 20 years


Laughing I'm just saying I like planning for the future. Same reason I like disc brake kits that use off the shelf parts rather than custom made parts. If the (one) company that makes the parts goes out of business, what are you going to do when you need a new rotor? Parts are never lifetime parts...


of course you realize you can get Berg Rubbers from 1978 bus upper mount for trans?? used longer than the pad mounts that were replaced by mounts that do not use the cradle like 67 and older in old speed design.


I didn't realize it at the time, but somebody told me that afterward. Very good thinking on Berg's part. Very Happy
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PostPosted: Thu Aug 11, 2011 10:00 pm    Post subject: Reply with quote

OB Bus wrote:
I was just reading this entire thread and enjoying every page. Then it stops dead on July 13th? What happened? How did it end?


Somehow I missed this post. I used that mount in my 57 bus, backed by a nicely tuned 1776, for many thousands of miles, with no issues. No bent tranny horns, no broken studs, no fatigued bolts. It worked very well. I did have to re-tighten a few of the nut/stud combos on the nose cone after a few hundred miles, and I constantly checked the tightness of all fasteners. That bus is no longer in my stable, but the new owner drives the bus regularly and has had no issues that I know of.

I will be building another one soon, but it will be for a straight axle setup. There are a few design changes that I will incorporate. If I can remember to do it, I will post some pics in here.
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PostPosted: Fri Mar 30, 2012 5:19 am    Post subject: Reply with quote

Has there been another version since the last post? Any other options based on using or incorporating the original big donut mount? Just wondering. If I keep my '59 I'd like a nice non-hack option. Great thread by the way.
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PostPosted: Sat Jun 23, 2012 8:35 am    Post subject: Reply with quote

has anyone used the wagenswest lollypop adapter yet? it looks like it would work very well.
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PostPosted: Sat Jun 23, 2012 9:42 am    Post subject: Reply with quote

http://www.wagenswest.com/partstore/index.php/root...r-kit.html

That's pretty cool. I was just in Nate's shop back in March, I wish I would have know about these so I could have seen it first hand. I would consider this over the style that I made.
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PostPosted: Sat Jun 23, 2012 9:57 am    Post subject: Reply with quote

cdennisg wrote:
http://www.wagenswest.com/partstore/index.php/root...r-kit.html

That's pretty cool. I was just in Nate's shop back in March, I wish I would have know about these so I could have seen it first hand. I would consider this over the style that I made.


so is the horseshoe piece the only thing holding the donut mount in the hole?
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PostPosted: Sat Jun 23, 2012 9:58 am    Post subject: Reply with quote

It appears so. But that's how VW did it with split case trannies.
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PostPosted: Sat Jun 23, 2012 11:56 am    Post subject: Reply with quote

My only question is... how much noise does the urethane part transmit to the body?
Anyone experienced this part/has run this yet?
I like this and kens version both. Debating now which one to use.
Ill be putting a tunnel in my bus by years end and need to decide. Smile
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PostPosted: Sat Jun 23, 2012 2:37 pm    Post subject: Reply with quote

The problem i have with it is, it seems to only work with RGB's were the nose of the trans will want to dip down,whereas with straight axle kit the nose will want to raise up, were there is no rubber isolating it.
EDIT: I see the stock later model bolts hold it. It might be an alternative to the pricey Concept1 kit,which works well, i have that kit in my '57.
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PostPosted: Sat Jun 23, 2012 2:49 pm    Post subject: Reply with quote

i don't think it will work on my bus someone try to put a tunnel trans in before and did a bad hack job at it

Image may have been reduced in size. Click image to view fullscreen.


Image may have been reduced in size. Click image to view fullscreen.


but i really don't like this stupid bus boys mount either
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