New Thomas head script
 

For those of you that would consider buying a "Thomas" 7:1 aluminum head from Snyder, how adamant are you that it has the "Thomas" script on it?

My new one is ready to cut, but I would like a survey of how many people care about the script.

Tod

Re: New Thomas head script
 

Tod,
Our Speedster has an original Thomas Head, Side Cover and intake, all with the Thomas Script. If I was buying a Thomas head to replace this one, I would prefer the Thomas Script to match the other components.

If I was buying one for performance on any other engine, it would not make any difference if it had the script or not.
Bob

Re: New Thomas head script
 

Maybe it would just be best to plan for it.

Tod

Re: New Thomas head script
 

I think it should be on there. How else would it be identified as a "thomas" head rather than just some random high comp head.

Re: New Thomas head script
 

I thought about putting my company name, "Rev C", on it. But people tend to like proven/traditional names.

Tod

Re: New Thomas head script
 

If you are spending the time to reproduce the head, I would think the Thomas script would be important.

Does it effect the cost/reject rate?

Re: New Thomas head script
 

Re: New Thomas head script
 

I'ld also prefer the script-no doubt.

Re: New Thomas head script
 

Exactly. If it's a homage copy of a period piece then most customers will it want to look like the original, including the script.

If you come up with a new head, particularly an improved combustion chamber design, some of which have been suggested on previous threads, then by all means put your own name on it.

Cheers

Juggs

Re: New Thomas head script
 

I would also want the script.

Tod, are you doing another run for them or redesigning it or ??? Please tell

Re: New Thomas head script
 

I modeled up the script to cut it on the new pattern. I will leave it as is.

26Tguy, this is a new pattern. The old pattern had issues that led to casting problems as well as machining difficulties. Patterns should be left to patternmakers.

Tod

Re: New Thomas head script
 

The Thomas script is in place. I can make an Excel picture of it for posting, if someone can post it for me.

Tod

Re: New Thomas head script
 

I'll do it Tod - you've got my email

Re: New Thomas head script
 

You might think about casting the compression ratio and maybe your name so there is no confusion later. Even if it carries a different scrip from the original not everyone will know and may think at a later date that they are buying an original.

Re: New Thomas head script
 

OK. As soon as I can.

Tod

Re: New Thomas head script
 

Mine will not be confused with the original.

Tod

Re: New Thomas head script
 

Must. Have. Script.

Re: New Thomas head script
 

One way to remove the script from green sand.:D
http://www.freemansupply.com/imagega...poon/12-14.jpg

Re: New Thomas head script
 

Re: New Thomas head script
 

I sent an Excel rendering of one view of my Thomas head to Juggler for posting in this thread.

The noticeable points of difference will be 1) a correct water-neck mating surface, and 2) a correct water pump mounting surface/size. Also corrected are draft areas on the water pump end and correct draft in the spark plug holes so that molds are not breaking on every head from now on. Adequate draft is actually put on the outside of the head also. This will allow the foundry to make a nicer looking casting.

But these are not the main reasons I am re-making this. The current parts are passable, but when it comes to machining them, the pattern is bad enough to make it not worth my time to struggle through the difficulties caused by poor pattern design and poor foundry fixes to the problems.

Tod