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Post by Eagle Racing on Jan 29, 2018 10:55:33 GMT -7
Me to Dave I have not run one of the 2.5ohm arms yet. My mountain motor pro stocks always had 3ohm arm.
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Post by Eagle Racing on Jan 29, 2018 10:57:45 GMT -7
New equipment addition to the shop.This is a 3D Resin Printer. The detail with these is amazing. It is like printing a finished product. Now all I have to do is learn how to use it.......  
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Post by GTS on Jan 29, 2018 11:07:58 GMT -7
WOW! That is impressive! Quality appears in photo to be better than what I've seen with the (I call 'em) fish line printers. No offense intended to anyone that has one.
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Post by AJR on Jan 29, 2018 13:44:44 GMT -7
New equipment addition to the shop.This is a 3D Resin Printer. The detail with these is amazing. It is like printing a finished product. Now all I have to do is learn how to use it.......
Robert those look really nice! I was wondering about the detail but it doesn't look like there is a problem there. Even the axle hole looks good! Thanks for posting. |
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Post by Eagle Racing on Jan 29, 2018 14:53:15 GMT -7
Thanks for kind words. I just finished design on new crown gears 15T, 16T, 17T, 18T. I will test these with different 3D Resins to see which one holds up. Then I will make a mold for metal casting of each size. I am also going to make some 3D Resin pinions, man this is fun. |
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Post by dave632 on Jan 29, 2018 18:14:24 GMT -7
Sounds good Robert. That will give the T jets and other chassis the ability to run different gear sets. So far the 18T is holding up nicely. Bill is hoping it will blow up.
Bill I am sending a 57 Vette to run against Eagle in the 6 ohm challenge. I found a Viper chassis with a 6 ohm arm in it. It should run similar to a BSRT chassis.
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Post by AJR on Jan 29, 2018 18:28:11 GMT -7
Will any of the resin gears be useable or are they just to mold for the alloy gear?
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Post by Eagle Racing on Jan 30, 2018 6:17:08 GMT -7
We will find out, I will be testing the different resins. I am thinking they will be hard enough. I have one resin that says it is the hardness of a hard hat.
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Post by Eagle Racing on Jan 30, 2018 8:20:56 GMT -7
Here is my second print using 3D Resin printer. These are 15T crown gears. The resin used is transparent, but hard.
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Post by Eagle Racing on Jan 31, 2018 13:49:50 GMT -7
Here is one of the 3D resin printed crown gears 16T installed in a 4g drag chassis. I did full throttle test with no load at 12V, 18v, 20v, 22v, and 26volts. The gear passed easy. Next test under load with tires mounted and a body.....got my fingers crossed.....
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Post by AJR on Jan 31, 2018 17:38:24 GMT -7
This is cool stuff! I mean it too. Hoping for good results...especially at the 22v and 26v settings. 26v is rough on anything with downforce.
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Post by hilltopspeedway on Jan 31, 2018 18:29:21 GMT -7
Cool engineering indeed!!! Can't imagine what's to come in the next few years....
And I gotta ask... why run on anything over 18 volts, when you know it's gonna cause damage...
I understand wanting speed, but running on high voltage???
Just curious...RM
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Post by dave632 on Jan 31, 2018 19:30:22 GMT -7
It's the racing bug. When I was racing full size there was almost nothing in the drive train, that was under stress, that I did not break. However I learned what lived and what did not. By the time I ran the Pro Mod I was pretty versed on what was going to live. I rarely broke anything on that car. The planetary gear pack in the JW glide did go and I did take a rear gear out but not much more. I would pull the motor occasionally to check it out and I never burned a piston or even hurt a spark plug on a Nitrous motor. Now I never ran all 3 stages either but only because it would not hook up. I can make most anything live in the HO slot car world, the 60+ mph cars have to run steel and brass gears to live as any plastic will get smoked.
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Post by Eagle Racing on Feb 1, 2018 6:30:05 GMT -7
Cool engineering indeed!!! Can't imagine what's to come in the next few years.... And I gotta ask... why run on anything over 18 volts, when you know it's gonna cause damage... I understand wanting speed, but running on high voltage??? Just curious...RM Thank you, to answer your question Randy that is what I am looking for. This is a new material and design. I need to know what the limit is. Then I can look at improvements or except the limit. |
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Post by Eagle Racing on Feb 2, 2018 12:52:09 GMT -7
Here is one of the 3D resin printed crown gears 16T installed in a 4g drag chassis. I did full throttle test with no load at 12V, 18v, 20v, 22v, and 26volts. The gear passed easy. Next test under load with tires mounted and a body.....got my fingers crossed.....
Well today is test day and the results are in. No passes were timed. This is all about how well the gears hold up under repeated passes. The first test was at 18 volts with 5 passes. The second was 20 volts with 5 passes. The third 22 volts with 5 passes. The fourth test was at 26 volts with 12 passes. The gears were very smooth. I used one of my rewinds a 4ohm motor with 10 degree timing. All I can say is I'm happy with the gear. I will try to have some printed for our race as prizes if that's okay with Jeff. |
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