The Centurion Project

Not your average Savage Hop ups. These are highly modified, with some home-made parts.

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FluxNZ
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Re: The Centurion Project

Post by FluxNZ » Tue Mar 04, 2014 5:34 pm

Pinion selection is limited on the 2028 due to the 8mm shaft. Smallest I've found is the 18T which then goes up to a 36-38T I think by memory? Quality of the pinions can be off (one I got had an off centre hole) from Kershaw Design, others have been ok.
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LLkoolskillet
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Post by LLkoolskillet » Tue Mar 04, 2014 7:55 pm

Kershaw makes mod 1 8mm bore pinions that would work great. They have a 36t pinion that I could run with my 35t spur

The question is, even tho it's lower kv would I still be able to reach let's say 110 with it
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Post by Ascender » Sat Mar 15, 2014 8:38 pm

[quote="LLkoolskillet";p="878647"]Thanks dude, you and Johnny have helped me out a ton.

Question, which would be better, twin 1717s on 8s each or a single 2028 on 8s?[/quote]

If you're feeling spendy, MGM makes a 10S ESC, and the 2028 doesn't seem to show much stress being run like that.

Or you could get the ICE HV 160 ESC from CC and run 12S.
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Post by LLkoolskillet » Sun Mar 16, 2014 9:25 am

I've read that the ice doesn't have a brake feature meaning I would have to install a mechanical brake. Idk if they could hold up to 100+mph runs.

Man the MGM ESCs are amazing but holy crap are they spendy. I plan to go out one last time with the current setup and try for 110. After that I may sell off the the motors and ESCs to buy either twin 1717's and XL2's 8s each or go full 10s on the 2028. Both combos should be very very similar in power output. But one is obviously lighter than the other.
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Post by johny723 » Sun Mar 16, 2014 11:24 am

Light weight is for wimps!
You need a twin 2028 setup! :D
imagine a 3-piece center diff ( like from cen gst)
with a spur gear on both ends
thus enabling you to use two 2028s mounted in line, not side by side, one for the front and one for the rear spur :twisted:
Too bad I dont have the money to try it, but I bet it would be mentally mental ! In fact I dont even know a word describing such state of mind-blowing overkill :D 4 languages I speak are simply lost for words when it comes to describing such ostentatiously lunatic insanity :D

cant wait to see the 110 video !

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Post by lizard » Mon Mar 17, 2014 9:13 am

Well, twin 1515 has been done, twin 1717 is in the progress of being done. Single 2028 is boring and misses the OMG *censored* factor in my opinion :)

I would vote for either twin 2028 (or Leo 58112) on 8s (more and cheaper ESCs/batteries to choose from than 10s) or a single Lehner 30xx or Neu 22xx on 12s.

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Post by LLkoolskillet » Mon Mar 17, 2014 10:06 am

So im sensing that I should go twin 2028's or similar lol, man thats 20hp in a truck designed to handle like 5hp hahaha

That being said, can you guys please share some links on these Neu and Lehner motors and what escs would work as I already have two 6s lipos that would work for the 12s.
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Post by lizard » Mon Mar 17, 2014 10:55 am

Lehner 30 series:
http://lehner-motoren.com/shop/index.php?cPath=16_8
http://www.lehner-motoren.com/assets/in ... s30_v3.pdf

Probably the best option because they can spin up to 50k RPM.
What's also nice is that they have all 6 wires from the coils outside the casing, so you can choose delta or wye wiring yourself
giving you two different kV values. LK variant is aircooled. Drawback is 10mm shaft and price. Handmade in Germany.


Neu 2200 series:
http://neumotors.com/Site/2200_12_series.html
Max 30k RPM

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Post by LLkoolskillet » Mon Mar 17, 2014 11:16 am

All I see is $$$$ the price to go fast

Thank you for the links
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Post by Ascender » Tue Mar 18, 2014 11:01 pm

Twin 2028 has been done, too, albeit in a Losi 5ive...
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Post by lizard » Sat May 10, 2014 3:33 pm

Do you know what the weight of the BSR foams is LLkoolskillet?

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Post by LLkoolskillet » Sat May 10, 2014 4:12 pm

There about half the weight of the X0-1 rears. Ill weigh some later for a more accurate number tho
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Post by LLkoolskillet » Sat May 10, 2014 4:17 pm

Today has been a great day, started running and reached 108 on the first real pull, well at the end I only heard one more spinning the other was free spinning, set screw came loose on the pinion. That run I reached 108mph. Another run the left side motors battery came undone (stupid deans) and shut the left motor down. I pulled 104 on that run. Never would I have thought that a single 2200kv setup pushing 16.5lbs could reach and pass 100mph, well it did! To my surprise after I tinkered with the batteries and escs, I decided to say screw it and just strap the camera to the truck and go for a 100mph pull. Well..... I went 112mph and broke my record lol. Shocked, you bet but man am I impressed. My custom diff I built for my nitro speed truck actually netted me a total of 7 mph over the flux bp diff. Thats huge when your close to maxin out. Anyways heres the video, please set to HD and enjoy

[youtube]http://www.youtube.com/watch?v=zqGDCSOb_Os[/youtube]
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Post by joonas » Sat May 10, 2014 5:09 pm

[quote="LLkoolskillet";p="880537"]Today has been a great day, started running and reached 108 on the first real pull, well at the end I only heard one more spinning the other was free spinning, set screw came loose on the pinion. That run I reached 108mph. Another run the left side motors battery came undone (stupid deans) and shut the left motor down. I pulled 104 on that run. Never would I have thought that a single 2200kv setup pushing 16.5lbs could reach and pass 100mph, well it did! To my surprise after I tinkered with the batteries and escs, I decided to say screw it and just strap the camera to the truck and go for a 100mph pull. Well..... I went 112mph and broke my record lol. Shocked, you bet but man am I impressed. My custom diff I built for my nitro speed truck actually netted me a total of 7 mph over the flux bp diff. Thats huge when your close to maxin out. Anyways heres the video, please set to HD and enjoy

[youtube]http://www.youtube.com/watch?v=zqGDCSOb_Os[/youtube][/quote]

Congrats on the new record!

I suspected that one tork motor is capable of doing that.
After all even with 16,5lbs the power to weight ratio is is still better than a Bugatti Veyron :)
400 kw per ton vs Bugatti's  390 kw  per ton.
With two motors it is 800kw pt and I can't imagine any vehicle having this much power



By the way why is the custom diff better? Is it lighter?

Do you know how much room it took you to reach 112mph?

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Post by LLkoolskillet » Sat May 10, 2014 5:35 pm

Thank you!

Id say its pullin it in 1200ft

the rear diff is lighter but its a secret
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Post by Sharkey_t » Sat May 10, 2014 8:33 pm

wow, thats nuts.

so question is, with one motor pulling 112mph, are you going to try knocking it down to a single motor setup? one motor, esc and battery pack has to weight a fair bit, if it doesnt need 2 motors to do it its gotta go faster with less weight.

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Post by johny723 » Sat May 10, 2014 8:40 pm

incredible what these motors are capable of!

regarding the diff, you mean that hybrid diff with cen gst ring and pinion gear that are 26/9 instead of a stock flux diff with 29/9? teeth?

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Post by LLkoolskillet » Sat May 10, 2014 8:49 pm

[quote="Sharkey_t";p="880544"]wow, thats nuts.

so question is, with one motor pulling 112mph, are you going to try knocking it down to a single motor setup? one motor, esc and battery pack has to weight a fair bit, if it doesnt need 2 motors to do it its gotta go faster with less weight.[/quote]

No its two motors pullin at 112, I pulled 104 and 108 with one motor.

When I find my castle link ill re time the escs and I hope to pass 115 and get closer to 120. Eventually my goal is 150 with either two 1717's or 2028's
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Post by LLkoolskillet » Sat May 10, 2014 8:50 pm

[quote="johny723";p="880545"]incredible what these motors are capable of!

regarding the diff, you mean that hybrid diff with cen gst ring and pinion gear that are 26/9 instead of a stock flux diff with 29/9? teeth?[/quote]

Lips are sealed  8)

all ill say is its lighter than my first hybrid diff
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Post by LLkoolskillet » Sat May 10, 2014 9:49 pm

Slowed down

[youtube]http://www.youtube.com/watch?v=rIDQuplWoSo[/youtube]
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