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Home Model Engine Machinist > Building Them > Engines From Castings > 1/4 Scale Gade Build

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Old 03-06-2015, 01:19 PM   #61
Jasonb
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Do you have a good seating for the valve in the carb? it should close off the fuel unless the tank is a lot higher than the intake. Quite often as the small hole is drilled from the needle it can throw up a burr on the angled seat, you may need to lap the valve in a little.

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Old 01-17-2018, 10:37 PM   #62
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Did you ever end up making a drawing for the fixture you used to hold the head? Im working on one now and it would save me some time. Thanks Tyler


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Old 01-17-2018, 11:37 PM   #63
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Thanks for your interest.
Unfortunately. I returned the fixture to the other HMEM member who loaned it to me several years ago and I didn't make a drawing of it.
The engine has been running perfectly for the last couple of years. I ran it for 3 days straight at the Cabin Fever Expo show last weekend and it never skipped a beat.
Good luck with your engine. If you have any more questions, feel free to ask.
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Old 01-18-2018, 12:16 AM   #64
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Thanks for the quick reply! I will just have to spend a little time and come up with a fixture. Yours looks great, did you use the iron piston ring or use an o-ring? I have only spent a few hours on it so far but it looks like it will be a fun little build. Tyler
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Old 01-18-2018, 01:46 AM   #65
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I used the cast iron ring that came with the fastener and small parts set.
Bore the cylinder straight and hone it with a brake cylinder hone. Make the piston .0005 smaller and it will have good compression.
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Old 01-18-2018, 06:24 PM   #66
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I have only ever used iron rings but noticed a few guys have used the o-ring the gade model. I think I will stick with the iron aswell. Thanks for the tips.
Tyler
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Old 02-12-2018, 02:13 PM   #67
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Well I finished the gade and I must say they were some of the nicest castings I have worked with. I have not recieved the fuel mixer yet but I did put one on that I had laying around so I could start it. Time to paint now and move onto the next one.
-tyler
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Old 02-12-2018, 05:40 PM   #68
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Post some pics!
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Old 02-13-2018, 11:04 AM   #69
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I dont seem to be able to post a picture or a video here. I do have a video up on youtube.
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Old 02-14-2018, 01:52 AM   #70
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Looks good-runs great!
Mine has been my most reliable IC motor so far.


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