Doug, The output can go to a data logger and stored that way. That's exactally it- what works in the boat vs. on the engine dyno.

What and when is PRI?

PRI = Performance Racing Industry Trade show. It's in Indianapolis December 5-7. It has pretty much anything hi-tech hi-perf. you could think of. Last time I looked there should be abot 20 to 25 data aquistion companies there. It's mostly auto racing, but people like Eickert & Nordskog are coming. Pretty much think of any hardcore engine part, or driveline part, and it's there along with warehouses and tooling. They are based out of CA you have to have a business license to attend (or get in from a company that does) (949) 499-5413

Thanks for the reply Cobra. Simple solution to my question I can not waite to see how it all works.

Jon

Very good idea! Do you have a dash mounted switch for doubling the readings when bragging to friends??

That is really cool Cobra Marty!! What kind of resolution are you shooting for? Are you using two strain gages and comparing them or one and measuring cantilevered load?

Your idea has opened up many ways in my mind that this could be done with simple electronics. Maybe another way would be to mount a load cell under one of the front engine mounts to generate an analog signal, then pass through an a to d converter to a digital readout on the dash... possibilities seem endless.

Good luck bro... let us know how it turns out. If you need anything let me know, seems like we may be neihbors.

BT

Marty

When can I have one?

Way COOL!
Great job Cobra Marty!!! I read your post about this several months ago. Glad to see it came together. The possibilities hmmmmmm.
blue thunder, I like your idea about the load cell. You got me thinking now, as i'm in the electronics industry. Then it could be used on all kinds of IO boats and it could probably be sold for a reasonable price. I don't know if it would be quit as accurate, but would make an interesting project.
Keep us updated!

A load cell under the motor mount would measure the TQ indirectly and I have seen it somewhere, maybe even on a dyno.
That is like measuring HP by accelerometers. I measure the actual TQ applied to the drive shaft.

JimV- are you still boating in MI? My boat is still apart and won't be done till spring. Is your's ready to go? You have PM.

Understood on the Imco shaft. Makes sense now.
... maybe a modified 2-piece Imco shaft with a way to uncouple the section with the strain gauge (I know, I know, stop harping on the Imco thing)...

Some idea using/replacing the Bravo rubber donut coupler on the flywheel would be a cool variation...

Marty, Sounds like you might have something there. I also have the Stellings Bravo One extension boxes on my 32'A/T. I would be interested in trying one or two myself. Let me know please.

Mark/KAAMA