MOPED ARMY

Trying something I saw in the internets.

I read that having a bit of flat lip on the cyl junction into the pipe can help with a nozzle style effect on the exhaust. I didn't add it to top and bottom, as the bottom had the lip and I just decided to leave it for now. If I like it I'll add a flat braze lip to the top too.

I'm going for broke again

And this time I'm pissed

Ok that's good

Lol

You're a pussy

Lol 2, the worried mopedder

Interesting. I wish all those people talking of "port matching" woulda mentioned this

You should widen the fuck out of the exhaust & make an adapter plate for a bigger header

Haha

Maybe, but I won't be the pushing a bike home with a brass imbedded piston that looks like a rapper's grill.

Doesn't give a shit, I'm getting the cast iron cherry red, no oil can survive that.

Never heard that before .

Maybe you're confusing that with the port area to cylinder measurement ?

Was doing more bridge cutting and low and behold I saw another hole on the other side of the bridge.

I did this thing so long ago I must have not fit the chopped fin too well.

Well then I checked to see if the hole went all the way thru!

Well shit it did.. haha

So I tried something.

Tried to use it as a lil baby port.

But no luck. Wouldn't run because the piston oiling holes passed right over the hole, basically killing all case vacuum. Nbd

I also added that nozzle output, and cut the cases and filed flat.

This is how you file flat, masking tape over one side of file and none on the other. Easy Peezy

So then I realized I'd have to re braze the bridge again to seal that hole. Oh well.

So then I did that and today I'll smooth it and see if it'll run again.

I also added bronze on the bridge itself to see how it wears. I had put a bit too much relief in the original bridge, it'll be cool to see if the bronze holds up. Or if it doesn't hold up. Nice to know things based on fact and not lil baby fearful myths.

If I can kill this kit today, then I can move on to throwing an insane wc kit I have onto this bike. No skill or challenge required but ripping is fun.

Back to it!

Hey man. Cool work.

You can also file flat by draw filing. I like doing it with a 2nd cut file for maximum finish. The more surface area the file comes in contact with the less it will cut other than the high spots. You can draw file stuff dead flat. It's a really simple technique

If you tape one side you will still get a little bit of a taper.

I can't really tell if you are filing the bridge flat or relieving it a few thou but it should be relieved as it will heat up faster than anything else.

This is probably the most exciting thread on MA right now.

And , the lift you get when it works can not be denied . :)

If you're going to waste the bronze, you gotta do it big!