upgrade Axle set for MXUS 3000 V2

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douglashart   100 W

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Re: upgrade Axle set for MXUS 3000 V2

Post by douglashart » Aug 07 2016 2:49pm

And by the way Ive decided to wall up the stator and Simply push air thru to the other side so it will exhaust over the windings and out the axel. Ive been looking at adding some CO2 in the line .We ll see. At least its an easy proto. I'm slow so itll be awhile.

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Kodin   1 kW

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Re: upgrade Axle set for MXUS 3000 V2

Post by Kodin » Aug 07 2016 2:51pm

Depends on if the bearings are 2RS or not; either way, you can order seals for any diameter; measure the innner diameter of the case and the shaft diameter where the seal sits then look online for seals that match those inner/outer diameters. Typically they are called oil seals. Also, one of the guys just came up with a design for a heatsink that clamps to the center of the rotor and when combined with appropriately specced ferrofluid at the right amount, looks like it can dissipate about 1500W of heat.
Tank Bike - (Previously YAG - Yet Another Genesis) - LeafBike 1500W 5t, custom shaft, 9 speed cassette, Chinese "Tank" EEB clone frame, Sabvoton SSC048150

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macribs   1.21 GW

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Re: upgrade Axle set for MXUS 3000 V2

Post by macribs » Aug 07 2016 8:19pm

douglashart wrote:And by the way Ive decided to wall up the stator and Simply push air thru to the other side so it will exhaust over the windings and out the axel. Ive been looking at adding some CO2 in the line .We ll see. At least its an easy proto. I'm slow so itll be awhile.

I would love to see that, now that would for sure push the hot air outside on the other side. And Co2 is very cold by itself so that might work to rapidly cool down the hot spikes from ie steep hill climbing etc.

Like the post above me said a heatsink placed around the outside of the magnet ring, between the flanges will work very well with ferrofluid and will add to thermal masses as well as being made of aluminum it is very light and can dump heat very quickly. Heatsink does not rule out your CO2 idea :twisted:

douglashart   100 W

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Re: upgrade Axle set for MXUS 3000 V2

Post by douglashart » Aug 11 2016 3:45pm

THNX KODIN, It didn't occur to me that it could be so simple but I think ive already located my seal. I ve got 2 RS bearings but I like any overkill. I saw the heatsink article. I always wonder if some tabs couldn't simply be welded on around the ring. It seems to be mild steel, at least 3/16 thick , so it may be possible with little to no distortion. I may try it once I get another bike built and have a loose motor. What is inviting about the CO2 is the various hardware available thru the paintball vendors.

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Kodin   1 kW

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Re: upgrade Axle set for MXUS 3000 V2

Post by Kodin » Sep 24 2016 4:04pm

If you were going to do gas discharge, helium has 2-3 times the heat conduction of CO2... It's also 3-4 times more expensive though.
Tank Bike - (Previously YAG - Yet Another Genesis) - LeafBike 1500W 5t, custom shaft, 9 speed cassette, Chinese "Tank" EEB clone frame, Sabvoton SSC048150

vipster76   1 mW

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Re: upgrade Axle set for MXUS 3000 V2

Post by vipster76 » May 15 2017 11:07am

are you still selling the axles? how much shipped to the uk ?

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madin88   1 GW

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Re: upgrade Axle set for MXUS 3000 V2

Post by madin88 » May 15 2017 11:45am

@ vipster and others who have sent me a PM

I do no longer fabricate custom axles, but i have two left which have small flaws and are quite rusty now.
The one on top i bought from linas here in the forum, but i never installed it.
It has two big slots so it could be used for watercooling. It has M16 fine-pitch thread and 150mm dropout.

The other axle is my prototype. It has no roundings inside the channels and the flat part has a little undersize (somewhere between 9,8 - 10mm). But the stock mxus axles have also a little less than 10mm... It is also made for 150mm dropouts.

I sell each as they are for 30USD + shipping (inkl. nuts and washers).
Bearings are extra.
Milled sidecovers for the 42mm bearings i need to check, but i'm afraid i have no more..

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cal3thousand   1.21 GW

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Re: upgrade Axle set for MXUS 3000 V2

Post by cal3thousand » May 15 2017 12:56pm

madin88 wrote:@ vipster and others who have sent me a PM

I do no longer fabricate custom axles......
That's sad to hear. Is there any way that you would share your dimensional drawings with the community so that we could have our own made by a local shop?
Get a Cycle Analyst and a Multimeter, you're still a noob if you don't have at least one of each.

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madin88   1 GW

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Re: upgrade Axle set for MXUS 3000 V2

Post by madin88 » May 16 2017 1:13pm

yes, but as the V3 has M16 axle, larger phase wires and 42mm bearing, it makes no sense anymore..
i believe mxus has made those improvements because of recommendation from doctorbass, myself and probabaly also teslanv :D

the drawing is attached
axle drawing.jpg
axle drawing.jpg (171.53 KiB) Viewed 1274 times
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cal3thousand   1.21 GW

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Re: upgrade Axle set for MXUS 3000 V2

Post by cal3thousand » May 16 2017 3:28pm

madin88 wrote:yes, but as the V3 has M16 axle, larger phase wires and 42mm bearing, it makes no sense anymore..
i believe mxus has made those improvements because of recommendation from doctorbass, myself and probabaly also teslanv :D

the drawing is attached
axle drawing.jpg

Thanks for sharing. I figured with the obsolescence that you'd be more inclined to release it. There may be someone down the road that wants to practice turning things and has an old V2 that they want to play with still.
Get a Cycle Analyst and a Multimeter, you're still a noob if you don't have at least one of each.

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markz   100 GW

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Re: upgrade Axle set for MXUS 3000 V2

Post by markz » May 16 2017 4:59pm

Did anyone have any problems with the stock axle shaft?

I havent really been paying much attention to much of the MXUS action going on, besides the anticipation an ES user buying the 5000W version with 150mm dropouts and updating us the info... I may purchase the 5KW just because I have the room on my Strong GTS frame and my MXUS 3000W actually forces the dropouts in, so I need washers to help correct that. An upgraded axle is something I would buy, if there were problems with the stock axle in terms of strength. If its just for bigger wires I would be 60no/40yes

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Rix   100 GW

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Re: upgrade Axle set for MXUS 3000 V2

Post by Rix » May 16 2017 7:46pm

markz wrote:Did anyone have any problems with the stock axle shaft?

I havent really been paying much attention to much of the MXUS action going on, besides the anticipation an ES user buying the 5000W version with 150mm dropouts and updating us the info... I may purchase the 5KW just because I have the room on my Strong GTS frame and my MXUS 3000W actually forces the dropouts in, so I need washers to help correct that. An upgraded axle is something I would buy, if there were problems with the stock axle in terms of strength. If its just for bigger wires I would be 60no/40yes
The primary complaint about the V1 and V2 axles were the limited space to funnel larger phase wires. After Madden came up with the solution, the V3 came out with the larger axle.

markz   100 GW

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Re: upgrade Axle set for MXUS 3000 V2

Post by markz » May 16 2017 10:50pm

Thanks Rix so hopefully they did the same for the 5kw motor, perhaps its an even bigger axle where we can stuff 8awg in (I dont see no drool emoji) I gotta good source for the Teflon PTFE wires but only to 10awg. Maybe theres some reasonable Teflon PTFE wires (or other kind) with thinner insulation, theres gotta be, but even finding teflon is hard for small qty, big ass rolls are expensive. I will do a cursory search and have a chat with a wire company in town. The market is huge and can be specialized.

So yeah right off the hop I found this link - http://huesonwire.com/site/capabilities ... er-cables/
and the rarely seen very thin insulation Type ET, rated for 250 volts (historically M16878/6)
http://www.logwell.com/tech/shdwe/teflon_wire.html

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