Home » Public Forums » GMCnet » Rear control arm material
| Re: [GMCnet] Rear control arm material [message #353738 is a reply to message #353737] |
Sun, 12 April 2020 15:24   |
Emery Stora
Messages: 959
Registered: January 2011
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You should be working on an electric drive for the rear wheels. They make electric hubs strong enough to power the GMC. Combine that with batteries and a small diesel generator to fit in the engine compartment and it should work.
Emery Stora
> On Apr 12, 2020, at 1:23 PM, Les Burt via Gmclist wrote:
>
> Hal,
> I’ve been thinking hard for some time about how to make a rear drive TZE. The rear suspension arms appear to be the biggest obstacle.
>
> Rear diffs are an easier obstacle to overcome. Have you seen the 9” pass-thru Diffs produced by Differential Engineering? They make an IRS version that might be interesting for driving all 4 rear wheels.
>
> https://images.app.goo.gl/aL6osQQHZeQDwB829
>
> https://images.app.goo.gl/jjitTwd82T1BawQs5
>
> www.differentialengineering.com
>
>
> Les Burt
> Montreal
> '75 Eleganza 26'
>
>
>> On Apr 10, 2020, at 5:48 PM, Hal StClair via Gmclist wrote:
>>
>> Johnny Bridges wrote on Fri, 10 April 2020 15:36
>>> Fab a replacement?
>>>
>>> --johnny
>>
>> Yea. 2 1/2" x .50 D.O.M. tube for the spindle should be the start.
>> Hal
>> --
>> 1977 Royale 101348,
>>
>> 1977 Royale 101586, Diesel powered,
>>
>> 1975 Eleganza II, 101230,
>>
>> 1974 Eagle Bus 45',w/slideout,
>>
>> Rio Rancho, NM
>>
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| Re: [GMCnet] Rear control arm material [message #353739 is a reply to message #353737] |
Sun, 12 April 2020 15:54 |
Hal StClair
Messages: 971
Registered: March 2013
Location: Rio Rancho NM
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GMC.LES wrote on Sun, 12 April 2020 13:22Hal,
I've been thinking hard for some time about how to make a rear drive TZE. The rear suspension arms appear to be the biggest obstacle.
Rear diffs are an easier obstacle to overcome. Have you seen the 9" pass-thru Diffs produced by Differential Engineering? They make an IRS version that might be interesting for driving all 4 rear wheels.
https://images.app.goo.gl/aL6osQQHZeQDwB829
https://images.app.goo.gl/jjitTwd82T1BawQs5
www.differentialengineering.com
Interesting, wish they had a little more information on their site.
I have a 9.75 Ford IRS pumpkin (nice low mile limited slip unit). I'd have to flip it but it is quite a chunk, a little over 12" tall which gets the ground clearance a little tight unless it moves up into the cabin. With new 7" frame rails, 1" floor that means about 5" under the chunk-might be too close.
Fun exercise though.
Hal
Les Burt
Montreal
'75 Eleganza 26'
> On Apr 10, 2020, at 5:48 PM, Hal StClair via Gmclist wrote:
>
> Johnny Bridges wrote on Fri, 10 April 2020 15:36
>> Fab a replacement?
>>
>> --johnny
>
> Yea. 2 1/2" x .50 D.O.M. tube for the spindle should be the start.
> Hal
> --
> 1977 Royale 101348,
>
> 1977 Royale 101586, Diesel powered,
>
> 1975 Eleganza II, 101230,
>
> 1974 Eagle Bus 45',w/slideout,
>
> Rio Rancho, NM
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
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"I enjoy talking to you. Your mind appeals to me. It resembles my own mind, except you happen to be insane."
1977 Royale 101348,
1977 Royale 101586, Diesel powered,
1974 Eagle Bus 45',w/slideout,
Rio Rancho, NM
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| Re: Rear control arm material [message #353742 is a reply to message #353597] |
Sun, 12 April 2020 17:51 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
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Emery, what do the wheel hub motor assemblies weigh? If you could fit them on the existing bogire without a lot of grief, you'd have pretty much free rein as to where the engine went. For weight control, I wouldn't mess with batteries, run it like a locomotive. And just blush about the unsprung weight.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: [GMCnet] Rear control arm material [message #353746 is a reply to message #353742] |
Sun, 12 April 2020 19:19 |
Emery Stora
Messages: 959
Registered: January 2011
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Here’s one at 79 pounds.
https://www.powerelectronics.com/markets/automotive/article/21864197/inwheel-motor-systems-will-propel-ev-performance
Emery Stora
> On Apr 12, 2020, at 4:51 PM, Johnny Bridges via Gmclist wrote:
>
> Emery, what do the wheel hub motor assemblies weigh? If you could fit them on the existing bogire without a lot of grief, you'd have pretty much free
> rein as to where the engine went. For weight control, I wouldn't mess with batteries, run it like a locomotive. And just blush about the unsprung
> weight.
>
> --johnny
>
> --
> Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
> Braselton, Ga.
> I forgive them all, save those who hurt the dogs. They must answer to me in hell
>
>
> _______________________________________________
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| Re: Rear control arm material [message #353754 is a reply to message #353597] |
Mon, 13 April 2020 07:19 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
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If you replace the steel wheel with an 18 inch aluminum one you'd reduce some of the unsprung weight. Again, a diesel engine and generator up front, skip the battery weight. There was an outfit in Texas, Fort Worth I think, which made power systems for the Navy's riverine boats. A big engine driven alternator, rectifier pack, and 60Hz inverter. They ought to scale up. I put one set in a promotions van, 350 Econoline. We got 5 or 6KW AC out of it at 1900 engine RPM (Don't remember the pulley sizes but nit as great as a 2:1 step up).
The concern is how much change would be required to fit 18 inch wheels in place of the current 16s and how would this affect handling. Interesting concept.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: [GMCnet] Rear control arm material [message #353757 is a reply to message #353755] |
Mon, 13 April 2020 07:56 |
Olly Schmidt
Messages: 1265
Registered: February 2014
Location: Germany and Scottsville, ...
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On 13.04.20 14:46, Bruce Hislop via Gmclist wrote:
> I suspect payback time, if any, would approach infinity.
I am pretty sure that ROI is rarely on the mind of anyone that is as
crazy when it comes to getting things done, as Hal S. is :-D
--
Best regards
Olly Schmidt
PGP KeyID: 0x4196BF22
'76a 26' Eleganza II - Virginia, US
'73 23' Sequoia - Schleswig-Holstein, Germany
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Best regards
Olly Schmidt
PGP Key ID: 0x18a9 3a1f 4196 bf22
'76a Eleganza II, VA
'73 Sequoia, SH, Germany
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| Re: [GMCnet] Rear control arm material [message #353763 is a reply to message #353757] |
Mon, 13 April 2020 10:33 |
Hal StClair
Messages: 971
Registered: March 2013
Location: Rio Rancho NM
Karma: -12
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Olly Schmidt wrote on Mon, 13 April 2020 06:56On 13.04.20 14:46, Bruce Hislop via Gmclist wrote:
> I suspect payback time, if any, would approach infinity.
I am pretty sure that ROI is rarely on the mind of anyone that is as
crazy when it comes to getting things done, as Hal S. is 
--
Best regards
Olly Schmidt
PGP KeyID: 0x4196BF22
'76a 26' Eleganza II - Virginia, US
'73 23' Sequoia - Schleswig-Holstein, Germany
But there are limits and this discussion spin up is far above mine 
Hal
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"I enjoy talking to you. Your mind appeals to me. It resembles my own mind, except you happen to be insane."
1977 Royale 101348,
1977 Royale 101586, Diesel powered,
1974 Eagle Bus 45',w/slideout,
Rio Rancho, NM
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| Re: Rear control arm material [message #353770 is a reply to message #353755] |
Mon, 13 April 2020 12:15 |
 |
Richard RV
Messages: 631
Registered: July 2012
Location: Full-timer for 12 years, ...
Karma: -17
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RF_Burns wrote on Mon, 13 April 2020 05:46
I suspect payback time, if any, would approach infinity.
If someone measures in dollars, yes, payback time approaches infinity. But if they measure their life in dollars it's likely that come infinity (getting planted) payback time might be a bitch!
Richard
'77 Birchaven TZE...777;
'76 Palm Beach under construction;
‘76 Edgemont waiting its turn
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| Re: [GMCnet] Rear control arm material [message #353772 is a reply to message #353763] |
Mon, 13 April 2020 12:35 |
Olly Schmidt
Messages: 1265
Registered: February 2014
Location: Germany and Scottsville, ...
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On 13.04.20 17:33, Hal StClair via Gmclist wrote:
> But there are limits and this discussion spin up is far above mine :lol:
Let's see wat happens in the next couple of years. Sometimes limits just
evaporate :-D
--
Best regards
Olly Schmidt
PGP KeyID: 0x4196BF22
'76a 26' Eleganza II - Virginia, US
'73 23' Sequoia - Schleswig-Holstein, Germany
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Best regards
Olly Schmidt
PGP Key ID: 0x18a9 3a1f 4196 bf22
'76a Eleganza II, VA
'73 Sequoia, SH, Germany
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| Re: [GMCnet] Rear control arm material [message #353787 is a reply to message #353746] |
Tue, 14 April 2020 11:42 |
jessfarr
Messages: 100
Registered: August 2004
Karma: 1
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May I suggest y'all are barking up the wrong tree. Check this out:
https://tinyurl.com/y2ca5gco
jesse farr, soddy daisy tn
----- Original Message -----
From: Emery Stora via Gmclist
Reply-To:
To:
Cc: Emery Stora
Sent: 4/12/2020 8:19:33 PM
Subject: Re: [GMCnet] Rear control arm material
________________________________________________________________________________
Here’s one at 79 pounds.
https://www.powerelectronics.com/markets/automotive/article/21864197/inwheel-motor-systems-will-propel-ev-performance
Emery Stora
> On Apr 12, 2020, at 4:51 PM, Johnny Bridges via Gmclist wrote:
>
> Emery, what do the wheel hub motor assemblies weigh? If you could fit them on the existing bogire without a lot of grief, you'd have pretty much free
> rein as to where the engine went. For weight control, I wouldn't mess with batteries, run it like a locomotive. And just blush about the unsprung
> weight.
>
> --johnny
>
> --
> Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
> Braselton, Ga.
> I forgive them all, save those who hurt the dogs. They must answer to me in hell
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
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jesse farr, soddy tn USA '74 Canyonlands 260
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| Re: [GMCnet] Rear control arm material [message #353798 is a reply to message #353787] |
Tue, 14 April 2020 18:58 |
dsmithy
Messages: 210
Registered: July 2012
Location: Lincoln Nebraska
Karma: 0
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Jesse,
I haven't looked at anything recently that got me so excited as these Ferox guys.
As has already been mentioned, the devil is in the details.
They talk about pressures but not flow rates and that's where I would be concerned.
If I could order six hub drives from these guys and start working out the rest of the issues I would in a heartbeat.
Best would be if I were 20 years younger and 200% richer though. Sigh.
Douglas & Virginia Smith,
dsmithy18 at gmail,
Lincoln Nebraska,
’73 “Sequoia” since ‘95: "Wanabizo";
Quadrabag/6 wheel disks/3:70 final/Paterson QuadraJet/Thorley’s/Alloy wheels/Sundry other
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