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Siamese Twin D8's
8 years 6 months ago #148090
by Paso Bob
D-4 7U-43159 with 4S dozer and Cat 40 scraper, D-7 3T-1179 with Cat 7S hydraulic dozer, D-7 17A 13,944, D-8 14A-1160 with Cat 8S cable dozer, Cat 12-99E-4433 Grader. All runners and users.
Replied by Paso Bob on topic Siamese Twin D8's
First things first...great looking load! Secondly, I say it was heroin or meth doing the driving. Thirdly, I'm glad there wasn't an accident to take up your day.
D-4 7U-43159 with 4S dozer and Cat 40 scraper, D-7 3T-1179 with Cat 7S hydraulic dozer, D-7 17A 13,944, D-8 14A-1160 with Cat 8S cable dozer, Cat 12-99E-4433 Grader. All runners and users.
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8 years 6 months ago #148092
by Bruce P
Replied by Bruce P on topic Siamese Twin D8's
Good grief!! I'm glad it all worked out. She probably can't even spell "truck" or "car".
BP.
BP.
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- janmeermans
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8 years 6 months ago #148102
by janmeermans
Replied by janmeermans on topic Darn........
I am not going up to Oregon this year; 25th anniversary and all. Oh well.
Jan
Jan
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- Tom Madden_archive
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8 years 6 months ago #148126
by Tom Madden_archive
BEST TRACKLAYERS ARE #1
Replied by Tom Madden_archive on topic Premiere
Glen
Have a great day tomorrow as you and your partners unveil the SS D8. What a tremendous accomplishment that will survive all of we mere mortals. I wish I could be in Redding but timing is not great for me.
Tom
Have a great day tomorrow as you and your partners unveil the SS D8. What a tremendous accomplishment that will survive all of we mere mortals. I wish I could be in Redding but timing is not great for me.
Tom
BEST TRACKLAYERS ARE #1
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8 years 6 months ago #148153
by Silver
Replied by Silver on topic Siamese Twin D8's
What an impressive job. Well done, and congratulations to all involved in this huge undertaking. It looks fantastic.
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8 years 6 months ago #148176
by gauntjoh
John Gaunt, ACMOC Director, UK
Replied by gauntjoh on topic Siamese Twin D8's
Hi Glen,
Just thinking aloud again, the right hand engine is very close to the left hand one, so much so that I'm wondering if there is space in there for the pony engine and space to start it and the right hand main engine, or is this where the direct connection between the two engines comes in, i.e. start the left hand engine with it's pony and then use the left hand engine to start the right hand engine...
I'm just curious to know...
John
Just thinking aloud again, the right hand engine is very close to the left hand one, so much so that I'm wondering if there is space in there for the pony engine and space to start it and the right hand main engine, or is this where the direct connection between the two engines comes in, i.e. start the left hand engine with it's pony and then use the left hand engine to start the right hand engine...
I'm just curious to know...
John
John Gaunt, ACMOC Director, UK
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8 years 6 months ago #148191
by 7upuller
Replied by 7upuller on topic We Cheated
Hey John,
The build team and I are amazed on how the original operators got in there to pony start the right engine! We cheated... We installed a 24 volt electric starter on the right diesel. We installed a pony on the left. With the option of posi locking the drive train we can start ether engine by compression. Also, the with one engine running, we can compression start the other without moving the tractor by holding back the two friction levers!!! It's a way cool set up...
Glen
The build team and I are amazed on how the original operators got in there to pony start the right engine! We cheated... We installed a 24 volt electric starter on the right diesel. We installed a pony on the left. With the option of posi locking the drive train we can start ether engine by compression. Also, the with one engine running, we can compression start the other without moving the tractor by holding back the two friction levers!!! It's a way cool set up...
Glen
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8 years 6 months ago #148194
by gauntjoh
Hi Glen,
Thanks for the explanation, it does indeed give you a lot of options around starting. It will be interesting to see which method becomes the method of choice (my guess is using the pony as it's a much more satisfying sound and process than direct electric starting).
Best Regards John
John Gaunt, ACMOC Director, UK
Replied by gauntjoh on topic Siamese Twin D8's
Hey John,
The build team and I are amazed on how the original operators got in there to pony start the right engine! We cheated... We installed a 24 volt electric starter on the right diesel. We installed a pony on the left. With the option of posi locking the drive train we can start ether engine by compression. Also, the with one engine running, we can compression start the other without moving the tractor by holding back the two friction levers!!! It's a way cool set up...
Glen
Hi Glen,
Thanks for the explanation, it does indeed give you a lot of options around starting. It will be interesting to see which method becomes the method of choice (my guess is using the pony as it's a much more satisfying sound and process than direct electric starting).
Best Regards John
John Gaunt, ACMOC Director, UK
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8 years 6 months ago #148299
by ETD66SS
Replied by ETD66SS on topic Siamese Twin D8's
I have a very basic question about this whole Siamese setup, I'm sure it has been asked/answered before, or maybe it's a stupid question...
Are the final drives and sprockets seeing more load than they were designed for with this kind of setup? One track per engine as opposed to 2 tracks per engine etc. If the drawbar pull of a D8 is xx,xxx lbs, is the drawbar pull of this machine xx,xxx lbs + y lbs? If so, what is y equal to?
Are the final drives and sprockets seeing more load than they were designed for with this kind of setup? One track per engine as opposed to 2 tracks per engine etc. If the drawbar pull of a D8 is xx,xxx lbs, is the drawbar pull of this machine xx,xxx lbs + y lbs? If so, what is y equal to?
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