Odd Mack Prototype at Macungie ATCA Meet

[Jamaican Bulldog]

While at Macungie I normally check out to see what engines trucks have in them. 

I came across this odd Mack F 700 with a blue component at the back of the engine. I meant to ask on here what was, but while I was leaving the show, I saw these flames. It was explained to me that this was a Mack Prototype to test a turbine feature on the back of the engine to add power and efficiency. It was probably the only one built or survived.

 

 

 

 

Edited June 19, 2017 by Jamaican Bulldog

[Hobert62]

I partially overheard the guy explaining to someone.    The turbine was geared to the flywheel to transfer the power.   It had some kind of heat exchanger on the normal exhaust stack, and 2 radiators in the truck.    

[Freightrain]

Sounds likes Jay Barbe's F model.  Been discussed here a few times.  It does have the basic parts on the truck still, but it is not functional.

Edited June 19, 2017 by Freightrain

[66dc75]

37 minutes ago, Freightrain said:

Sounds likes Jay Barbe's F model.  Been discussed here a few times.  It does have the basic parts on the truck still, but it is not functional.

It was Jays truck

[j hancock]

Here is a thread with pictures and a good article with details.

https://www.bigmacktrucks.com/topic/36444-organic-rankine-cycle/#comment-253827

 

[DCR]

Jay has the truck for sale.

[Jamaican Bulldog]

Thanks for the helpful responses. I was able to finally add the pics above I took of the truck at Macungie last Saturday

[Brian Blaylock]

I drove that truck when it belonged to s friend of mine in Ky