Good to hear!
Look forward to further updates whenever  available..

Really really interesting! Turbos are nice, but superchargers have another charm. Speeduino is also ramping up so should be a solid basis and relatively low cost.

Quote from: potge on July 18, 2020, 19:15Really really interesting! Turbos are nice, but superchargers have another charm. Speeduino is also ramping up so should be a solid basis and relatively low cost.

Hopefully Speeduino remains open source and user-friendly and doesn't go thr way of MegaSquirt2/3.


Shows a lot of promise

Quote from: shnazzle on July 18, 2020, 19:18

Quote from: potge on July 18, 2020, 19:15Really really interesting! Turbos are nice, but superchargers have another charm. Speeduino is also ramping up so should be a solid basis and relatively low cost.

Hopefully Speeduino remains open source and user-friendly and doesn't go thr way of MegaSquirt2/3.


Shows a lot of promise

Let`s hope so.

a quick update for John.
I saw 102kpa at full throttle with the smaller 90mm pulley.
atmospheric pressure was 98 so 1/2 psi or so of boost!
I've ordered an 80mm pulley from the engineering department to see if we can get nearer the original goal of 4-5psi.

I've also ordered a new IAT to go just before they throttle. using the one in the MAF before the supercharger sis inaccurate and laggy I think, so I hope for a more consistent mixture with this.

more updates in a week or so. probably.

Quote from: jonbill on July 27, 2020, 11:32a quick update for John.
I saw 102kpa at full throttle with the smaller 90mm pulley.
atmospheric pressure was 98 so 1/2 psi or so of boost!
I've ordered an 80mm pulley from the engineering department to see if we can get nearer the original goal of 4-5psi.

I've also ordered a new IAT to go just before they throttle. using the one in the MAF before the supercharger sis inaccurate and laggy I think, so I hope for a more consistent mixture with this.

more updates in a week or so. probably.

That's the same feedback we received from RRR. Use an aftermarket IAT, not the one in the MAF. Not too close to the TB to reduce heat soak and fast fluctuations.

Quote from: jonbill on July 27, 2020, 11:32a quick update for John.
I saw 102kpa at full throttle with the smaller 90mm pulley.
atmospheric pressure was 98 so 1/2 psi or so of boost!
I've ordered an 80mm pulley from the engineering department to see if we can get nearer the original goal of 4-5psi.

I've also ordered a new IAT to go just before they throttle. using the one in the MAF before the supercharger sis inaccurate and laggy I think, so I hope for a more consistent mixture with this.

more updates in a week or so. probably.

John is pleased and thanks you for your kind updates!

Well that's right noisy!!

I'm sure there are those who will love it.

Noisy git! 
But sounds fantastic. 

You've hit the finish line @Carolyn; you, David and @jonbill well and truly proved the concept.

That's terrific!
Can we sponsor a dyno day for it? Very happy to contribute to understand what it's actually creating.

Sounds like being on the number 32 bus going through town.

Quote from: Call the midlife! on August  8, 2020, 13:00Sounds like being on the number 32 bus going through town.

Well... Now I can't un-hear that

Quote from: shnazzle on August  8, 2020, 13:13

Quote from: Call the midlife! on August  8, 2020, 13:00Sounds like being on the number 32 bus going through town.

Well... Now I can't un-hear that

you must have one of those jet engined busses!

Quote from: jonbill on August  8, 2020, 16:42

Quote from: shnazzle on August  8, 2020, 13:13

Quote from: Call the midlife! on August  8, 2020, 13:00Sounds like being on the number 32 bus going through town.

Well... Now I can't un-hear that

you must have one of those jet engined busses!

😂 just the sound of the air hissing.

The under load sound. More kleenex required.

Quote from: Ardent on August  8, 2020, 20:56The under load sound. More kleenex required.

"more"?

 

So I took it for a spin today. This was the first time I could do more than piddle up our street. The hill up from Jon's is quite steep, it charged up.  Just to be sure, when leaving in mine I booted it up the hill.  It crawled up by comparison.

There's quite a few things to sort out, as one would expect, but it definitely needs a bigger blow-off valve with exhaust ducting and some kind of silencer.

I could live with the louder-than-stock exhaust (not as loud as some I've heard) and I could live with the supercharger whine, but the blow-off is 'orrible!!

Jon's done a great job getting it tuned, though there's still work to do at low rpm.

The plan is to fix the niggles, get the tune more sorted, do the blow-off and put a few miles on to make sure it's reliable and then it will be up for sale.

Nice work and really got me tempted to supercharge mine instead of turbo next time , getting the noise acceptable is a big factor and i found this when i mini charged my old MX, i used the mini bypass valve to vent back into intake pipework rather than a vta dump which i hate the sounds off and can also make it more difficult to map depending on ecu, i had a lot of supercharger whine though especially once i fitted a smaller pulley to spin it at 17000rpm!, i didnt mind it though and could drive around it if needed and i think all superchargers should make the whine   see below for video of me on the slippy oulton park drift track, the special polished tarmac is not where you want instant boost/torque but one of most fun days ive ever had 


If you decide to sell the charger setup do let me know

Quote from: Carolyn on August 10, 2020, 16:31then it will be up for sale.

I keep reading this post waiting for this bit to appear   

The linear pull of a supercharged engine over a turbo has always appealed to me (or maybe I just haven't driven a turbo for long enough). My only worry is I might actually want to buy it 

Quote from: cptspaulding on August 10, 2020, 16:49

Quote from: Carolyn on August 10, 2020, 16:31then it will be up for sale.

I keep reading this post waiting for this bit to appear   

The linear pull of a supercharged engine over a turbo has always appealed to me (or maybe I just haven't driven a turbo for long enough). My only worry is I might actually want to buy it 

You, sir, do NOT need more power

we've replaced the 25mm BOV with a 50mm one.
I'm afraid its completely ruined the sound effects.
on this upside, inlet air temps are down to a manageable 45-55 degrees, the hoses don't blow off and peak pressure is still the same - 125 kpa or so.
this is the same stretch of road as the previous recording.

https://youtu.be/zYhyq2gsDR8

Sounds much better good work

Much betterer.  Will be even better with the bins back in.

Getting there.