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Post by AJR on Jul 20, 2020 15:29:38 GMT -7
I will get you some 3G times. The cluster in those seems to be able to handle up to about a mid .4 ET on my track. I don't remember the 60' times, I will run some of them and see what they can do. The 4G could do better with bigger tires and traction magnets but then the gears will go up in smoke. Yes Sir I understand what you are saying. I appreciate that and look forward to seeing the numbers. Sam ran a couple of races with sponge tires and the cars survived and I believe actually won those races. I'm sure you will find the sweet spot between wheelspeed and shredded gears. My cars durability will be tested for this race. |
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Post by skillet on Jul 21, 2020 13:27:04 GMT -7
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Post by GTS on Jul 21, 2020 14:08:25 GMT -7
That's amazing, skillet! Very intuitive . . . . and a tad intimidating, too  |
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Post by Deleted on Jul 21, 2020 14:33:35 GMT -7
Sam, unique and innovating thinking there.
unless you are talking real slow rotation, a crown gear just isn't going to work as a drive pinion.
just keep in mind that, even in real cars, the pinion gear is smaller than the crown or spur gear and rotates many more times than the axle.
I didn't wan to rain on your parade over on SLodge.
glad you made a different decision.
I think your design can still be used, but you have to use a more conventional method of driving the axle gear.
think about the variations on the theme that you already seen and try to incorporate some of that into your design.
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Post by sjracer on Jul 21, 2020 15:52:08 GMT -7
Very impressive Sam, You've done a lot of fab work, more than I care to do or am capable of doing. I'm using the stock gear plate with a few modifications. I'm borrowing ideas from SKR, Jeff , Eagle, Dave and anybody else who cares to share. Jeff said the pinion is crucial and requires the thought, planning, prep and if you're me redesigning. My current design is a hybrid of all of them. If you need a 4 gear bare chassis and top plate let me know.
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Post by AJR on Jul 21, 2020 17:35:27 GMT -7
It's alive.....IT'S ALIIVVVVE!!   That right there is pretty darned SWEET Sam!! WOW!! Keep us updated. |
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Post by hairycanary on Jul 21, 2020 19:45:39 GMT -7
Sam Skillet That’s one cool machine ! Alls I can say is Evil Mean Wicked and Nasty 😁 With all that work hope it runs good. Can’t wait to see what it does ?
Rick
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Post by dave632 on Jul 22, 2020 12:48:45 GMT -7
A lot of innovation there. Very nice Sam. Waiting to see how it does.
Jeff here are some times that a modified T jet ran. This one hit 34.7 MPH on my track with a .433 ET. 60' was .080 330' .207.
A milder AFX that ran 29.1 MPH .524 ET hit a .096 60' with a 330' of .245.
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Post by sjracer on Jul 22, 2020 15:53:12 GMT -7
Okay Sam I abandonded the laborious task of attempting to fabricate the entire top plate out of brass and adding a bushing. Instead I'm going with the Angery Jeff set up and using a 3/32 piece of brass to cover the hole in the top plate created by removing the plastic gear. Additionally, it eliminates the need for a bushing on the top plate of the same size (KISS). I still plan on adding a bushing to the bottom because I had to slide the rear gear up a hair or two ever so slightly. Dave, I might have bitten off more than I can chew....I know I can't touch those times.
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Post by dave632 on Jul 22, 2020 17:10:59 GMT -7
Darryl, those times are for a THREE gear which is about .05-.10 quicker and about 5 MPH faster with the same setup. My 4 gear did run 34 MPH but
it did not come near that 3 gear ET. It has only made one pass with that arm and I am saving it for the match race. So you will have to
wait until it runs at Jeff's to see its ET and find out how long it lives.
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Post by AJR on Jul 23, 2020 5:51:22 GMT -7
A lot of innovation there. Very nice Sam. Waiting to see how it does. Jeff here are some times that a modified T jet ran. This one hit 34.7 MPH on my track with a .433 ET. 60' was .080 330' .207. A milder AFX that ran 29.1 MPH .524 ET hit a .096 60' with a 330' of .245. Very good Dave thank you for providing that. My org/wht FED hit .0860 60' so that's not too bad. Also gives me a number on a Tjet that I am building. I still haven't built an unlimited 3 gear and I want to do that as well. I have acquired another 15t brass gear for that very purpose. Maybe will have something to send to your end of the year race?? Thanks again. |
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Post by skillet on Jul 23, 2020 15:16:12 GMT -7
Thanks for checking it out guys. I'll keep an update to what happens with it. I think I'm going to change the gears around. Don't worry about the rain Al, I am having fun experimenting . I got a lot of catching up to do and I need the practice soldering. Usually when I get an idea I end up building it a couple times before it works ha ha. Sam/Skillet
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Post by Deleted on Jul 23, 2020 17:33:24 GMT -7
Sam, I think you have a very good idea. just need to tweak it a bit
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Post by dave632 on Jul 23, 2020 17:57:35 GMT -7
A lot of innovation there. Very nice Sam. Waiting to see how it does. Jeff here are some times that a modified T jet ran. This one hit 34.7 MPH on my track with a .433 ET. 60' was .080 330' .207. A milder AFX that ran 29.1 MPH .524 ET hit a .096 60' with a 330' of .245. Very good Dave thank you for providing that. My org/wht FED hit .0860 60' so that's not too bad. Also gives me a number on a Tjet that I am building. I still haven't built an unlimited 3 gear and I want to do that as well. I have acquired another 15t brass gear for that very purpose. Maybe will have something to send to your end of the year race?? Thanks again. .086 is a good 60' for those style cars. My List race 57 Chevy which was a good pancake runner ran .10 60' times. It would get a jump on just about any similar style car in the early stages of a run. |
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Post by skillet on Aug 10, 2020 20:00:26 GMT -7
Still kicking things around with my build. Shortened up the frame work some and changed the gears around. Still got alot of work to go but it runs lmao...   |
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That right there is pretty darned SWEET Sam!! WOW!! Keep us updated.
