Trip / MPG Computer

[frankenduck]

Priority Mail is awesome:

1) They deliver free boxes to you doorstep.

2) If you set up an account at the USPS site then you can print postage at home and just drop the packages off at the PO without having to wait in line.

3) I prefer to use the USPS site over PayPal for printing labels because you can print them 2-up and then pay via PayPal. (Using inexpensive 2-up adhesive labels purchased on Fleabay.)

[wmax351]

Manufacturing pics:

Programming the chips.

[rbm]

Ah, that workplace looks like a safety hazzard to me.  Stop the production line! Call in the OSHA! :laugh

Good job on the build.

[frankenduck]

It should have an option for scrolling text: "Long Live The Motobrick!"  :mbird

[wmax351]

Work is moving along on these. My grandmother passed away (On her 99th birthday, on no medications) so I had to go back to Pittsburgh earlier this week.

I am going to finish the first five or so on sunday, to be ready to ship this coming week.

[mystic red]

Very sorry to hear of your Grandmother's passing, Max. Glad it went easy for her. It's the people who are left that it's hard on.

[wmax351]

First one is done! Just waiting for some posi-taps in the mail, and some nuts for the cord grips (the black thing on the bottom).

[Rick G]

Just find out the postage to OZ and I will get some dollars on their way for one.

[wmax351]

2 done. Looks like it will be about 20 bucks for shipping to OZ, but I need to check the cost once I get one boxed up.

[Lawrence]

Hi WMax351,
My condolences on the loss of your grandmother.  I trust she lived a good and full life.
In an earlier post you described the computer in development as having the wire bundle exiting from the top of the case. I thought that was great, as it would seem to make it easy to mount on the handlebar cover/pad on my old '85 K100RS and run the cable through one of the unused rocker switch ports.  The latest info you've shared has the cable exiting the bottom of the case.  Will all the computer be so configured?
Thanks a million for your clever work.  :2thumbup:

[wmax351]

Hi WMax351,
My condolences on the loss of your grandmother.  I trust she lived a good and full life.
In an earlier post you described the computer in development as having the wire bundle exiting from the top of the case. I thought that was great, as it would seem to make it easy to mount on the handlebar cover/pad on my old '85 K100RS and run the cable through one of the unused rocker switch ports.  The latest info you've shared has the cable exiting the bottom of the case.  Will all the computer be so configured?
Thanks a million for your clever work.  :2thumbup:

That is a good point. I can do either, equally easily. I will drill a few of each, and you can choose when you order.

[leecow]

Very nice work!

Would be interesting to consider if a configuration which could be surface mounted in the fairing cover might be possible. ;-)

[Lawrence]

..."fairing cover...."  what is this?
My fairing cover is ripstop nylon fabric that is stuffed in a bag when I'm on the road.

[leecow]

Sorry, 46632307642 or 46632307641 to be more precise.

[wmax351]

It would be a fairly trivial modification. Cut a hole, and screw it in.

http://www.hammondmfg.com/pdf/1591B.pdf

This is the datasheet for the enclosure. You can buy some of the longer assembly screws, and cut a hole to fit. Alternatively, you could cut a hole, and use strapping, attached with bolts, washers and nuts.

[wmax351]

Good news! The first few are ready to ship. I've got 5 done, and a couple more very close, which will be ready to ship on monday.

I will post a thread (duck, can you sticky it when its there?)  in the shopping cart, with an abbreviated version of this thread, along with ordering info.

In the meantime, my paypal email is maxwell.witt (at) berkeley.edu. You can send the money as a personal payment or as payment for goods.

The cost is $125, plus $8 shipping in the continental US. Email/pm me for international or ak/hi.
 

[leecow]

Looking forward to adding this to my K! My apologies if this question was covered already in the thread ... how weatherproof is the assembly expected to be around the function buttons? Riding year round in the pacific northwest can get a bit soggy at times.

[wmax351]

Looking forward to adding this to my K! My apologies if this question was covered already in the thread ... how weatherproof is the assembly expected to be around the function buttons? Riding year round in the pacific northwest can get a bit soggy at times.

They are NEMA IP65. So they are protected from jets of water.

The whole thing should be very splashproof. The enclosure is supposedly NEMA IP54, which is splashproof. I add a thin layer of silicone to the lip, which should make it very well sealed. The screws holding the circuit to the face of the enclosure are o-ringed, so should be splashproof. The circuit itself is coated in enamel. The display board also appears to be coated as well.

As far as I can see, the only concern for the unlikely event of a small amount of water entering would be potential fogging of the enclosure, which can be rectified by opening the box and allowing to dry. You could also install a packet of silica gel to prevent it from recurring.

[healthy]

Hey Max, I was wondering if you had posted the final firmware somewhere. I got my unit yesterday and i wanted to dig into it a bit before i installed it, but the instructions only say that they are posted at www.motobrick.com.

You mentioned that it's released under GNU/GPL. I assume it would be ok to put my modded code up on github? (with proper attribution of course.)

let me know, thanks!

[wmax351]

Hey Max, I was wondering if you had posted the final firmware somewhere. I got my unit yesterday and i wanted to dig into it a bit before i installed it, but the instructions only say that they are posted at www.motobrick.com.

You mentioned that it's released under GNU/GPL. I assume it would be ok to put my modded code up on github? (with proper attribution of course.)

let me know, thanks!

certainly.

The code is here: https://docs.google.com/open?id=0B29HQe4CE8wgcnlwMGJJMmJXZU0

[sh00ter]

what would you set fuel flow value to for the replacement bosch 4-hole injectors? 


http://www.ebay.com/itm/200808444924

[wmax351]

what would you set fuel flow value to for the replacement bosch 4-hole injectors? 


http://www.ebay.com/itm/200808444924

Do you know the fuel pressure? If it is 43ish, you will do the calculation with (180 cc/(minute * injector)) *4 injectors to get the flow in cc/minute. Then you convert to microseconds per gallon, which is 3.155×10^8.

[Rick G]

Will I have to change the settings in mine. Its a K1100.

[Duc750]

On the ebay link for the injectors it gives the flow rate but I think they are the same as stock its just the pattern is better?

[wmax351]

Will I have to change the settings in mine. Its a K1100.

Depends what the injectors and fuel pressures are. According to euromotoelectrics, it looks like the injectors flow 150.8 cc/minute, which works out to 3.765×10^8 microseconds per gallon for the whole engine.