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GS500 build thread... cf tanks, internal supercharger, etc

Why not induct from the front of the compressor instead of the back? The compressed air could go straight to the intercooler/air tank, instead of going the long way around...
 
Random thought from the peanut gallery: If you were planning on putting a fairing on the bike. One of the older ways of mounting the oil cooler, was to put it in the fairing, under the headlight. You could do the same with the intercooler.
 
Batteries just showed up... hella fast shipping

sweet. i have commitment issues i keep checking that auction and stalling. did you check voltage on the cells? from looking at his pictures and the date code according to the seller in china.... they're almost 2 years old i think, and i have no idea how these things age when not in use.

also, they're lithium phosphate, not LI Ion. i don't really know what the difference is but i know they're different
 
Why not induct from the front of the compressor instead of the back? The compressed air could go straight to the intercooler/air tank, instead of going the long way around...

I was wondering if OP had thought the same thing. Logical if you ask me, but what do I know?
 
Why not induct from the front of the compressor instead of the back? The compressed air could go straight to the intercooler/air tank, instead of going the long way around...

I've considered it. The issue is that I need to keep the valves as close to the head as possible to keep the head volume down. If I reverse the valves, due to clearance on the exhaust port, I'd have to stand the exhaust side off the motor a decent amount. Also, the sizing of the intake and exhaust ports of the head are sized in such a way that makes running it like it is more appropriate.

Long story short, it would help with intake pipe lengths, but make the compressor less efficient.
 
Random thought from the peanut gallery: If you were planning on putting a fairing on the bike. One of the older ways of mounting the oil cooler, was to put it in the fairing, under the headlight. You could do the same with the intercooler.

Not planning on running a fairing and doing that would make the pipe length from the intercooler to the intake throttle body WAY too long. Trying to make that pipe as short as possible.
 
sweet. i have commitment issues i keep checking that auction and stalling. did you check voltage on the cells? from looking at his pictures and the date code according to the seller in china.... they're almost 2 years old i think, and i have no idea how these things age when not in use.

also, they're lithium phosphate, not LI Ion. i don't really know what the difference is but i know they're different

LiFePO4 if memory serves.

I checked 4 of them yesterday, and they were all sitting at 3.28 volts +/- .01
 
And here's how we make carbon fiber charge pipes from holiday supplies.

Part 1

Start with a styrofoam wreath of the appropriate tube diameter. I'm using a 1.5" diameter pipe here.
wreath.jpg


Must be polystyrene foam, not polyurethane!

Cut into sections and glue together.
pipetopview.jpg

wedgepipe.jpg


Just like making an exhaust from u-bends.

Mock it up on the bike
pipemockup.jpg


Add some straight sections at the end.

pipeplug.jpg



To be continued this afternoon
 
Wow! Thats pretty damn cool :thumbup.
Can't wait to see this done !
 
Making carbon pipes part 2:

This is the carbon I'm using.
carbonsock3.jpg


It's basically woven into a sleeve. Imagine a sock basically.

It stretches width wise pretty wide.
carbonsock.jpg


Take the earlier made foam pipe and cover it with a layer of carbon.
carbonfirstlayer.jpg


Resin is then worked into the carbon. Basically add a little, rub it in, working from the middle out. This gets rid of any air bubbles and compacts the layers together.
This is done for all the layers. I'm using 3 here because of how tight the weave is on this small of a pipe.

After, the pipe is tightly wrapped in several layers of peel ply.
carbonpeelplysock.jpg


This further compacts the layers, squeezes out any extra resin or air bubbles, and holds everything to the foam shape. Normally I use a special type of heat shrink for this, but I can't seem to find mine.

From here, the part is heated and left to cure for several hours.
 
I've been following this for a while and I have been fascinated.

Mounting the intercooler in the tail shouldn't be a problem for air flow. When the Benelli Tornado came out I remember reading that the effectiveness of cooling system did not significantly increase once speeds rose about 40-45 mph. I don't think the intercooler would be any different. With your technical ability it should be pretty simple to create some ducts to pull air through the fins.
sistemi_big_4.jpg

sistemi_big_2.jpg

2006-benelli-tornado-tre--2w.jpg


However, I am wondering about keeping the electronics cool enough with them being so close to the intercool and exhaust. Are you going to build a box and use a ton of insulation?

Keep up the good work.
~Carl
 
Exhaust is going to be mounted under the bike. No where near the electronics. The relay box that's up close to the intercooler is designed to not be heat sensitive. The ecu itself is mounted all the way at the back of the bike, insulated in foam.
 
are you still running a storage tank in this prototype phase?
 
Carbon charge pipes part 3:

Resin is hard. Pulled the peel ply off. 4 layers wrapped tightly = pain in the ass to remove.
intakechargepipe1.jpg

Fresh out of the peel ply.

At this point, you're saying... "but wait, these are wrapped around foam stupid!"

The amazing part about polystyrene foam is that it's soluble in gasoline or acetone. Pour some gas in, let it sit, and all the foam dissolves away.


Also finished the plug for the other charge pipe.
enginechargepipemockup.jpg

The tight u bend at the end had to be carved out of a block of foam. Very tedious.

enginechargepipeplug.jpg
 
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