Search found 20 matches

by DaveyG
Wed Aug 14, 2019 2:56 pm
Forum: You and your build
Topic: 2 stroke twin cylinder turbo build
Replies: 24
Views: 15967

Re: 2 stroke twin cylinder turbo build

Still thinking of doing this but it got pushed to the back burner for the time being as higher priority projects have taken over. As for pulses my particular engine should have significantly lower amounts of reversion as it uses a rotary valve to keep the flow going in one direction, much more contr...
by DaveyG
Wed Apr 10, 2019 5:38 pm
Forum: Dev: Hardware
Topic: Davey’s Frankenstein build Qs
Replies: 11
Views: 7453

Re: Davey’s Frankenstein build Qs

Nevermind, found the PDF schematic.
by DaveyG
Wed Apr 10, 2019 5:36 pm
Forum: Dev: Hardware
Topic: Davey’s Frankenstein build Qs
Replies: 11
Views: 7453

Re: Davey’s Frankenstein build Qs

I don't have a schematic, can you link me to it? Thanks!
by DaveyG
Tue Apr 09, 2019 10:34 pm
Forum: Dev: Hardware
Topic: Davey’s Frankenstein build Qs
Replies: 11
Views: 7453

Re: Davey’s Frankenstein build Qs

They’re the tiny caps that just came with the rusefi diy Frankenstein kit.
by DaveyG
Tue Apr 09, 2019 7:57 pm
Forum: Dev: Hardware
Topic: Davey’s Frankenstein build Qs
Replies: 11
Views: 7453

Re: Davey’s Frankenstein build Qs

I just removed one cap at a time, one from each strip, and tested, so that I would know what the red number corresponded to a capacity, and all others read higher but these 13 strips of 20 were between .39nf and .45nf another question I have, can I skip some of the components as I am only running tw...
by DaveyG
Tue Apr 09, 2019 7:52 pm
Forum: Dev: Hardware
Topic: Davey’s Frankenstein build Qs
Replies: 11
Views: 7453

Re: Davey’s Frankenstein build Qs

These strips of caps are the ones in question. First time I’ve tried testing a cap with my fluke meter, has a farad setting, but just sitting at rest reads .37nf so I’m hesitant to trust it... but anything above .37nf seems to read correctly, up to 112.0nf. Meter shown after just turning on, and swi...
by DaveyG
Tue Apr 09, 2019 4:00 pm
Forum: Dev: Hardware
Topic: Davey’s Frankenstein build Qs
Replies: 11
Views: 7453

Davey’s Frankenstein build Qs

So I purchased the Frankenstein kit with the STM32 board, and I’m just checking over all of the components (mainly just double checking capacitance) and I’ve found 260 pcs that read between .39nf and .45nf. Is this correct or is my meter just not sensitive enough? Do I need to get a meter capable of...
by DaveyG
Sat Apr 06, 2019 4:18 am
Forum: You and your build
Topic: 2 stroke twin cylinder turbo build
Replies: 24
Views: 15967

Re: 2 stroke twin cylinder turbo build

My RusEFI package arrived today!!!!! Unfortunately I had to take a short trip out of town immediately after I checked the mail and don’t even want to open the box until I’m back home and can lay everything out on my workbench. But I’m giddy like a little schoolgirl!
by DaveyG
Tue Mar 26, 2019 8:53 pm
Forum: You and your build
Topic: 2 stroke twin cylinder turbo build
Replies: 24
Views: 15967

Re: 2 stroke twin cylinder turbo build

Well down the rabbit hole I go... I just ordered the Frankenstein kit with STM32 and resistor package.
by DaveyG
Tue Mar 26, 2019 3:44 pm
Forum: You and your build
Topic: 2 stroke twin cylinder turbo build
Replies: 24
Views: 15967

Re: 2 stroke twin cylinder turbo build

I’ve subscribed to that guy’s channel on YouTube. I’m looking forward to the next steps he takes with it. He is very thorough.
by DaveyG
Tue Mar 26, 2019 1:37 pm
Forum: You and your build
Topic: 2 stroke twin cylinder turbo build
Replies: 24
Views: 15967

Re: 2 stroke twin cylinder turbo build

This video (posted yesterday) has me thoroughly convinced that I can pull off the Frankenstein build without trouble. I was a bit concerned about doing the fine pitch pin chips, but his method seems easy enough. I’ve not done a ton of pcb soldering, but enough to be able to pull this off I think. ht...
by DaveyG
Tue Mar 26, 2019 5:33 am
Forum: You and your build
Topic: 2 stroke twin cylinder turbo build
Replies: 24
Views: 15967

Re: 2 stroke twin cylinder turbo build

With the standard Frankenstein build it yourself kit, how many pieces are there? If I buy that, what other parts will I need to purchase separately? My thoughts with EGT, is that it could work roughly like a rich/lean sensor, if I set a target temperature for stoich, it should be within a range of t...
by DaveyG
Mon Mar 25, 2019 7:45 pm
Forum: You and your build
Topic: 2 stroke twin cylinder turbo build
Replies: 24
Views: 15967

Re: 2 stroke twin cylinder turbo build

If I get the ‘assembled Frankenso’ for $290, I need to add my own STM32F4 and LCD to be equivalent to the ‘pnp Frankenso’? Am I correct in that thinking?
by DaveyG
Mon Mar 25, 2019 7:39 pm
Forum: You and your build
Topic: 2 stroke twin cylinder turbo build
Replies: 24
Views: 15967

Re: 2 stroke twin cylinder turbo build

Ok seems like rusefi has a bit longer track record, and more functional vehicles completed, than speeduino. How could I cut costs versus buying pnp Frankenso? Would I need to buy the pnp Frankenso AND a separate STM32 or does a STM32 come in the $384 pnp Frankenso package deal?
by DaveyG
Mon Mar 25, 2019 5:45 pm
Forum: You and your build
Topic: 2 stroke twin cylinder turbo build
Replies: 24
Views: 15967

Re: 2 stroke twin cylinder turbo build

So I’m actually leaning toward the Frankenso pnp setup, with pinout already installed, comes to $384? Will that work with an EGT instead of an O2 sensor since my project is 2 stroke? What about the lack of MAF or MAP sensor? I could add a MAF to the system before the TBs rather easily but a MAP woul...
by DaveyG
Mon Mar 25, 2019 5:36 pm
Forum: You and your build
Topic: 2 stroke twin cylinder turbo build
Replies: 24
Views: 15967

Re: 2 stroke twin cylinder turbo build

So can I get a Frankenstein board that is already assembled? Or are they only available if I do all of the soldering? I’m pretty good at soldering but that looks like a lot of points to do, and possibly cross circuits with my rudimentary soldering tools at my disposal. What does the Frankenstein boa...
by DaveyG
Fri Mar 22, 2019 3:33 am
Forum: You and your build
Topic: 2 stroke twin cylinder turbo build
Replies: 24
Views: 15967

Re: 2 stroke twin cylinder turbo build

Ok so the Sachs build has me convinced. I gotta do this. So what hardware do I need to streamline the process, the STM32 board? Or should I get the Frankenstein board? Do I need both? Just watched a YouTube video about setting up rusefi with a STM32 board to start with.
by DaveyG
Fri Mar 22, 2019 1:13 am
Forum: You and your build
Topic: 2 stroke twin cylinder turbo build
Replies: 24
Views: 15967

Re: 2 stroke twin cylinder turbo build

Yeah planning on just doing EFI conversion first then doing turbo later. The fuel pump is just a cheapo in-line 190gph 45-90 psi unit, will need to run a separate return line to tank. I’m thinking I’ll run a hall-effect sensor, unless anyone suggests otherwise for simplicity reasons...? I plan to sw...
by DaveyG
Thu Mar 21, 2019 8:44 pm
Forum: You and your build
Topic: 2 stroke twin cylinder turbo build
Replies: 24
Views: 15967

Re: 2 stroke twin cylinder turbo build

This is a pic of the same brand and model of throttle bodies I will be using. From an 800cc twin 2 stroke. Can see the injectors as well as the TPS sensor.
AC89AFB0-B046-44FB-A99C-387EE044E503.png
AC89AFB0-B046-44FB-A99C-387EE044E503.png (2.2 MiB) Viewed 15857 times
A1CBA714-8984-4CA1-A4EE-BF2DF813EAA4.png
A1CBA714-8984-4CA1-A4EE-BF2DF813EAA4.png (2.4 MiB) Viewed 15857 times
by DaveyG
Thu Mar 21, 2019 8:37 pm
Forum: You and your build
Topic: 2 stroke twin cylinder turbo build
Replies: 24
Views: 15967

2 stroke twin cylinder turbo build

Hey all, newb here. I stumbled upon this site by looking for microsquirt type stuff on eBay, I found a Franken board on there said something about rusefi.com so I searched and here I am! I’m in the middle of a crazy build trying to convert a 2 stroke twin to EFI and turbo it and I’m super cheap so I...