Comparasion 4" DCC with 6" GMT

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Comparasion 4" DCC with 6" GMT

Post  Julia on Wed 10 Jul 2013, 1:12 am

I just finished building a 6" Burrell Gold Medal Tractor to replace my 4" Burrell Agricultural and
since the 4" DCC and the 6" GMT are of comparable size and weight I took the chance to
snap some pictures of my GMT along side Kevin's DCC at the weekend. I am not sure which
is bigger but my GMT currently weighs in at 770Kg and is 35" W x 86" L x 60" H
Make no mistake my GMT is definitely 6" - big bits very close together in contrast to the 4"
DCC which has smaller bits further apart.

PS: previously loved 4" Agg "Little Beastie" is looking for a new home.






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Re: Comparasion 4" DCC with 6" GMT

Post  IanL on Wed 10 Jul 2013, 6:57 am

Hi Julia ,

I have measured my 4" DCC road loco 33"W x 78"L x 48"H have not finished the build as yet so do not know the weight.

I assume your pistons will have a larger diameter so should have more power at similar pressures.

Have you got more pictures you could post?

Best wish

Ian

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Re: Comparasion 4" DCC with 6" GMT

Post  highpressure on Wed 10 Jul 2013, 9:22 am

Interesting comparison, I drove "Goldie" and as Julia said the control and layout is quite a bit bigger as it is scaled down only half rather than our third although the original engines are very different in full size. Nice engine to drive, not a bad choice for a model, Dean?

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Re: Comparasion 4" DCC with 6" GMT

Post  Julia on Wed 10 Jul 2013, 10:43 am

Ian
Surprisingly the 4" DCC has a slightly  larger HP cylinder at 2.28" compared to the 6" GMT at 2.25" .  The LP cylinders are the same both being 3.75".  The 6" GMT has a slightly longer stoke at 4.25" compared to 3.94".  I run mine at 200psi whereas the DCC runs at 170psi.  None of these differences are that significant.  I would expect both designs to be capable of great things.  I have driven a couple of DCCs and I confirm they go.  Like my GMT the top gear is capable of scary speed.  Any more details on my GMT build have a look at the Traction Talk Form.

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Re: Comparasion 4" DCC with 6" GMT

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