Gs500

[Guest]

FYI measurements.

Something didn't seem right when I was doing the math for this engine.
Combustion chamber has 38cc's measured.
Compression ratio is 9:1 according to the book
Bore is 74mm
Stroke is 56.6mm
Piston appears to in the hole 0.030 measured.
487cc's

On a flat top piston engine this would be easy for me to calculate but with this dome type piston fitting into the combustion chamber I have no Idea what to do besides actually measuring things.

Messing around with an engine calculator and punching in
compression
bore
stroke
and 0.030 deck height

It spits back 27cc's for a combustion chamber volume.

I'm thinking of decking the head or block to raise the compression to 10 but not sure how much I can take off each yet.

[Guest]

Ok you lost me at your third sentence...

[Guest]

lol, I'm just trying to think of a way to increase the compression by shaving the head or the block. But I don't know how much.
I'm going for a compression ratio of 10:1

[Guest]

I reckon Ray could help you there... speaking of Ray have you go the beast back yet?

[Guest]

Nope, Said he would reassemble last weekend, haven't herd anything yet.

[droyce]

If you need to determine the volume of the domes, just press them into some playdough and fill it with water from a graduated cylinder.

[Guest]

Play dough. Genius


I got the frame and all parts back today. Stayed up till after 4am putting what I could together.

Tomorrow I plan on getting the tires installed and balanced along with new bearings. Maybe even drop the lower half of the engine in place.

Anyways. Here's some pics.

[Guest]

Mate that's awesome! Gonna come together real nice I reckon

[Guest]

[Guest]

Its a rolling chassis now,

Got the the rims on and all the little bits for the frame.

Just finished the wiring harness and modifying the stock cluster.

I'm switching over to dual Turn signal lights since I don't need a Neutral light anymore.

Also I'm using a bright blue LED right in the middle of the cluster on the top for the kickstand light.

There was already a hole there anyways.


I've decided to add a mini voltmeter like on my last one.

And the gear position indicator right in the middle of the cluster near the bottom.

There isn't much room.

[Guest]

Mate nice work, would like to see pic's of the rolling chassis though

[Guest]

I had to roll it out to the kitchen to take a pic

[Guest]

New cluster lights are done.

Now i have left and right turning lights.
1 for oil
1 for high beam that i have to add a resister on because its too bright.

Neutral will be part of the gear position.
Kickstand switch will either be left alone as a starter interrupt or to drive a warning light.
Mini voltmeter.

I'm also wiring in a hazard light switch and a switch to turn off all lights since its already designed for it.

Thinking of installing some lights in places that would be handy in case i have to work on something in the dark.

USB and 12v receptacle coming soon.


Thinking of buying this

http://www.ebay.ca/itm/200538709020?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2648

[Guest]

Nice... she's looking good! It cracks me up you have to wheel it into the kitchen though... haha

As for the battery, don't do it! Those A123 cells need to be managed carefully to ensure each individual cell does not get under or over charged. Worst case is they can actually catch fire if not maintained correctly. If you have a fancy charging system that monitored the charge of each individual cell, then that would be fine... but that's just a touch beyond the standard GS charging system...

Stick with something like a Shorai where that sort of technology is built in.

[Agemax]

if you want a smaller battery with massive power, get a Ballistic 8 cell battery. tiny but awesome power in it. works with stock charging system as well