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Post  NEW222 on Sun Dec 23, 2018 9:16 pm

Ok. So I just wanted to share a little experience I had today. I just aquired an old beige/white horseshor product engine the other day. So as it was sticky, I decided to give it a bath. I decided to use rc fuel for this one as it was not that bad overall, and to just fire up my crock-pot for a crankcase, cylinder, and piston was just not feasible. Also the main reason is the backplate was very dirty. Anyways, during disassembly, I realized that there was no crankcase gasket, reed or retainer. Looking around, I managed to find a spring retainer then made a reed out of a floppy disc. I installed it after the cleaning and assembly. I just polished the crankcase without sanding, and it turned out quite well I must say. Also, I should have seen it when I bought it, the backplate was missing a screw, should have known... I had a few longer 2-56 screws that I cut with wirecutters and filed smooth and round on the ends (I also put on a nut before cutting). So now I had a new reed, retainer, gasket, and screws. I then put in th eneedle and installed the fuel line on the pickup barb on the bottom of the engine. It failed the suck and blow test badly. So I made 2 more reeds from .001 and .002 stainless. They also failed the test. I was mad and only then realized my mistake..... I was blowing in the fuel line and all the air was coming right out the tube. I then blocked off the fuel line, and inserted a piece of tubing in the back of the venturi tube. They all worked much better, but still not a 100% seal. I will have to likve with it as I do not know what else to do. Only time will tell, and sprng cannot come fast enough!
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Post  rsv1cox on Mon Dec 24, 2018 8:08 am

Great story Chancey, as you know I love those fix-em-ups.

I have found them missing gaskets but never a reed or retainer. But I have found a few where the reed retainer had popped loose because someone didn't take the time to seat it properly. I insert the open end of the clip in the slot and rotate the rest in with my thumb.

Take before and after pictures. Keeps a record and acts as memory prompts. When you reach my age your going to need them. Smile

Bob
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Post  NEW222 on Mon Dec 24, 2018 9:12 am

Famous last words. I always intended to take a picture before and after, but the thrill of fixing them up hits and before I remember, it is already bathing in pieces. Next time I find one I will try to remember. I have another I will post about a little later. Was a surprise gift, however, no pictures were taken before.... Like you, before and after pictures are great as pictures tell a story.
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Post  getback on Mon Dec 24, 2018 9:52 am

I very seldom do a suck/blow test , as long as the reed i correct size and moves around freely under the retainer it will most likely work ok { when the castor gets to it the seal will improve drastically } Babe Bee .049 Santa
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Post  Ken Cook on Mon Dec 24, 2018 11:46 am

The reeds are cut with a die, most of the time they end up slightly concave. This is why I suggested flipping it around. A brand new reed doesn't always operate properly and may require this. If the reed is installed with the cupped side away from the backplate, more than likely it's not going to seal properly. This is why it's a good idea to insure that it's working correctly so you don't have to take it apart again.
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