DIY hub dyno on the cheap

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BennVenn
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Joined: Fri Mar 04, 2016 10:35 am
cars: R33 GTST, '60 Vw Bug, Express (4G63T), GW X200
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Re: DIY hub dyno on the cheap

Post by BennVenn »

IMG20210813143943.jpg
Gampy wrote:I use the MAX9924 for my VR needs ...

-Enjoy
You're saying there's a cleaner solution than this?!?

Hopefully the VE VSS works out and we can just run it through a schmitt trigger and be done with it. Must be a reason manufacturers have moved away from VR.

With no pid control if you creep up to the rpm it'll hold it, if you punch it it'll overshoot, overcompensate and stall the motor.

The valve spring seems to run out of travel easier today. Maybe it didn't like being fully compressed over and over. That'll definitely need addressing before I can rely on the pid control but I think we're close now! Or closer than we were this morning.
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Gampy
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Re: DIY hub dyno on the cheap

Post by Gampy »

BennVenn wrote:You're saying there's a cleaner solution than this?!?
I dunno know, I would say that is a subjective statement ... You decide! :)
MAX9924_VR.png
MAX9924_VR.png (39.59 KiB) Viewed 1936 times
Is what I use ... Mind you, I am no EE, or even electronically experienced or educated ... I'm just a trial by smoke hacker!

And holly smokes they must have started making them out of platinum plated gold ... They sure got pricey! ~$5us.
Intelligence is in the details!

It is easier not to learn bad habits, then it is to break them!

If I was here to win a popularity contest, their would be no point, so I wouldn't be here!
BennVenn
Posts: 475
Joined: Fri Mar 04, 2016 10:35 am
cars: R33 GTST, '60 Vw Bug, Express (4G63T), GW X200
Location: Windellama, NSW
Contact:

Re: DIY hub dyno on the cheap

Post by BennVenn »

Yeah that wins, I'll grab a couple next mouser order
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