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General control line discussion => Open Forum => Topic started by: George Waters on December 05, 2007, 08:56:22 AM

Title: A little help from your friends
Post by: George Waters on December 05, 2007, 08:56:22 AM

I have an old McCoy 35, it was the first big engine that I ever bought. Cost me $3.95 in 1963, I wore  the main bearing  to the point it wouldn,t runwell anymore. I had asked one of my friends if he knew a way to fix this problem. This friend is Bob Zambelli, he told me how to replace the bearing. I told him that I didn,t have any machine tools to do this type of work, to which he replied send it to me. I did and it was returned in a couple of days with a new main bearing and the crankshaft polished. These are the kind of people that our sport has in it that makes it so much fun. Thankyou Bob. I need to find out if I can have the piston hardened or chromed so that the new p/c assembly that I have will last longer than they normally do with a muffler. George

Title: Re: A little help from your friends
Post by: john e. holliday on December 05, 2007, 09:46:28 AM

Isn't that what modeling is all about?  DOC Holliday

Title: Re: A little help from your friends
Post by: Bill Little on December 05, 2007, 09:48:59 AM

Bob Oge, and Don Blackburn both do chromeing, AFAIK.  I no longer have the contact info for either one.

Tom Lay does heat treating process for McCoys (T&L).

Edit to correct *Bob* Oge's name! SORRY! ;D

Title: Re: A little help from your friends
Post by: Marvin Denny on December 05, 2007, 11:22:27 AM

  Bill, don't you mean Bob Oge?   He does really nice chroming.

  Bigiron

Title: Re: A little help from your friends
Post by: Bill Little on December 05, 2007, 12:14:24 PM

Quote from: Marvin Denny on December 05, 2007, 11:22:27 AM

  Bill, don't you mean Bob Oge?   He does really nice chroming.

  Bigiron

Thanks, Bigiron!  I didn't catch that, it IS Bob Oge.  I had Don on my mind I guess! LL~

Title: Re: A little help from your friends
Post by: gary tultz on December 06, 2007, 08:06:13 AM

George, Bob Z. is the man for sure.

Title: Re: A little help from your friends
Post by: Paul Taylor on December 06, 2007, 10:27:46 AM

C/L people are the best.

And if you want to see them at there best you need to drop in to a Brodak's fun fly if you live close to Bob Z.

Oh wait I think he flew south for the winter. LL~

Paul

Title: Re: A little help from your friends
Post by: Bob Zambelli on December 10, 2007, 08:43:04 AM

To all - thanks for the kind words.

Paul - I WISH I had flown south!! My new home is finished and ready to settle into BUT, my home hear in PA has not sold. I have therefore put off my retirement date.

ANYHOW, back the the subject at hand: engine work - specifically, chroming.

I've heard of two methods -
Chrome the piston, grind it to size and then hone the sleeve for a custom-fit.
Chrome the sleeve, hone it to size and then custom-fit the piston.

I have not had any experience but can someone comment on a preferred method, if any?

Bob Z.

Title: Re: A little help from your friends
Post by: Bill Little on December 10, 2007, 09:33:57 AM

Hi Bob,

Talking to Don Blackburn the last time, he said he chromes the piston.  I understand that Bob Oge chromes the sleeve.  From all reports, these two gentlemen's work is superb, so I don't know which is better! LL~