Building our own Inertia Dyno
| Front deck and main frame attached |
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| Plenty of work to do yet, just trying to get the frame done so i can work on the data acquisition |
| Front deck attached |
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| waiting to weld support for rear deck |
| He's finally working |
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| Shawn fitting deck plates |
| Jeff can I take the power bleeder home |
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| Adam double flaring a brake line |
| Adam thinks this pnuematic brake system is awesome |
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| This brake system went together fairly easily |
| Get that rear deck fastened in, i want to use it! |
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| Almost done welding, maybe monday |
| IT WORKS!, and the brake is a sweet necessity |
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| Now for the data acquisition |
| The fun of it all, hope it works next time |
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| Testing rotor sensor output with scope |
| Crude but effective |
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| Hall effect sensor /w voltage regulator & pull up resistor to drive led |
| Left is hall effect unit for rotor sensing |
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| Right is temp sensor for laern to use data acquisition unit |
| A dyno lathe, What! Oops! |
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| While truing the drums at .045" cut, she caught......... |
The drums for the dyno just fit in my lathe but the carridge wont fit under them so I could turn the
od's. After assembling the rolling group we measured the runout at about 0.100". In the process of testing various
things, we noticed that the chassis shakes pretty strong in winding up 4th gear. This didnt really surprise me, I
was just putting it off.
So today we built a rig to hold and feed a lathe turning tool accrossed the front of the drum. it seems to work
but I had it adjusted a bit too deep and she caught and stopped the whole thing like the brake kicked on double time.
It bent the lead support shaft but I straightened it and it's ready for the next opertunity to true
the drums.
I measured the section we turned at .055" runout with a nice steady reading.
Way to go Adam. Thanks
| Where did you find that? We made it . |
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| Our lathe attachment for the dyno, it works! |
In January, we tried to finish turn the
rolls and it was taking a good bit time to do as above. So i gave in and sent the rolls out to be turned and knurled. B&A
Machine Shop got them turned but was unable to knurl them.
The day they came back we assembled the rotating group in the back
of the pickup and sent them over to Hackworth Electric Motors to be dynamically balanced.
After two months waiting we got the group back and reassembled it back into the frame.
now we had a test bed without data aquision.
We had decided to buy the Performance Trends software because we were busy fixing quads &
bikes and i wouldnt have time to work on software and daq of my own for a while.
I think i will build my own system just because i like to do that kind of stuff and
because i want to be able to hack in changes when i want them and not when i can get someone else to do it.
| new rotor rpm sensor from Performance trends |
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| Ended up having 2 magnets 180 degrees apart |
| Dyno is ready to go |
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| XR50 shows 2.5HP with slight muffler & jet changes |
| Dyno monitor showing program ready to go |
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| Yep that's an oscilloscope, i wont leave home without it! |
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