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General control line discussion => Open Forum => Topic started by: Phil Coopy on February 14, 2008, 08:09:08 AM

Title: Question: K&B Torpedo 35C
Post by: Phil Coopy on February 14, 2008, 08:09:08 AM
Saw a K&B Torpedo 35C Greenhead sold on Ebay for a bunch.  How can you tell the K&B 35C(combat version) from the regular K&B 35 Green head?

Phil
Title: Re: Question: K&B Torpedo 35C
Post by: Bill Little on February 14, 2008, 08:57:17 AM
I don't know if the head has *35C* stamped in it, so I can't say about the external ID.  But the crank does have a stamp on it.
Title: Re: Question: K&B Torpedo 35C
Post by: tom hampshire on February 14, 2008, 09:03:06 AM
Hi Bill - Don't think the head had a stamp, there was a sticker 'C' on the bypass.  The shaft was the primary difference, had a smaller bore to the port.  Seems K&B couldn't get the original greenhead shaft to survive, so they made it thicker cross section.  The original greenhead crankshaft is interchangeable with a McCoy redhead.  Tom H.
Title: Re: Question: K&B Torpedo 35C
Post by: wmiii on February 14, 2008, 09:29:32 AM
 The piston had a single oil  groove near the top. The cranks still broke frequently, as we ground on them, not knowing  what we were doing.

 Walter
Title: Re: Question: K&B Torpedo 35C
Post by: Richard Entwhistle 823412 on February 15, 2008, 08:31:46 PM
New 35C's in the box will have a tapped boss in the center of the back plate with a big round headed slotted screw as a plug.  The plug screw will be bright but some were finished in black.  I have two new in the box and have not seen the sticker on the case.  They may have been removed or fallen off.  The combat crank is stamped with a "C" and the piston and liner are a different part number than the stunt engine.
Later
Richard
Title: Re: Question: K&B Torpedo 35C
Post by: Garf on February 15, 2008, 09:54:14 PM
Bigger cyllinder ports, different crank, different backplate, head marked 35C, oil grooves in piston.
Title: Re: Question: K&B Torpedo 35C
Post by: Phil Coopy on February 16, 2008, 05:35:56 PM
Thanks guys.......mine's not. :-[

Phil
Title: Re: Question: K&B Torpedo 35C
Post by: Marvin Denny on February 16, 2008, 08:10:43 PM
  I just got through checking my two in the junk barrel.  Both have the tapped plugged backplate, the 35 C on the crand counterweight but no 35c on the head.  The cylinder ports seem bigger than the standard 35 and the piston s have a groove around them near the top

  Funny, I ran them in both Rat ?Race and Combat and could pretty well stay up with Riley Wooten and carl Berryman back in those days and never had a shaft breaking problem after the first one and then I found out why and corrected the problem.

  Bigiron
Title: Re: Question: K&B Torpedo 35C
Post by: Keith Spriggs on February 17, 2008, 09:43:20 PM
I am glad this came up. I picked up a KB 35 a while back. I see that is a 35C. The crankshaft is stamped "35C". I also picked up a McCoy Redhead that is a .29. When I took it apart I noticed that the connecting rod was marked 35. I assume the 29 and 35 used the same connecting rod. ???????????
Title: Re: Question: K&B Torpedo 35C
Post by: Bill Gruby on February 18, 2008, 01:45:00 AM
 Hi All

  The crank on a 35C is stamped as such as Marvin has already said, but the easiest way to tell is by the serial number, it will have a 'G' prefix. The numbers ran from G00100 to G07000. Just one more way to tell.

  "Billy G"  H^^
Title: Re: Question: K&B Torpedo 35C
Post by: Keith Spriggs on February 19, 2008, 11:32:41 AM
Hi All

  The crank on a 35C is stamped as such as Marvin has already said, but the easiest way to tell is by the serial number, it will have a 'G' prefix. The numbers ran from G00100 to G07000. Just one more way to tell.

  "Billy G"  H^^

Once again the G-Man scores a bullseye. The serial # on the engine I have is G6878. I guess that would be one of the last ones built if they run through 07000