MOPED ARMY

I always like hobbit tanks like that.

I gotta do one of those someday.

You can run them close to empty with a tall carb off the intake.

But you should put in a new lower fitting in the tank. That would be a good thing (edited)

good call, don't forget to order some longer studs to work with that big fin hobbit head.

some people weld or epoxy the cases to ensure a good seal to the athena kit transfers

and 100% you should run a head temp gauge. i think a retarding cdi, either the HPI or a 'oem style' stator with a jog scooter cdi box, is necessicary if you do go with the big dude pipe. you might be able to get away with points using the proma, just by closing your points gap to retard the ignition, but you'll be leaving a lot of performance on the table.

game on, that's a solid build. I think you're nailing it. jam on. as you get deeper in there's tons more to mod, rear pulley being another pretty important one but you got enough there to do lots of going much quickly.

Trust me, heat them up with a propane torch. Also the bit is key!!!! Not just any phillips, it has to be the big one with the flatened head. If the bolts hot enough and the impact driver is strong, it will twist out, dont twist those head off though. U can get propane refills at convenience stores, just need the tip. Zoom in to pic and proper bit in pic (edited)

It's deja vu all over again with the PA case and screw difficulties lol. But really, these are such a pain in the ass; on another recent thread i reccomended swapping out all the screws for sockets - makes life a bit easier on subsequent teardowns.

And nice build so far. I'm using the same Athena on my current project; made a thread about it a few weeks ago.

A 2 point puller will work, easier to center on the case than a 3 point.

thanks tate, thats a really good point. agreed the cam out on standard phillips is a real motherfucker and the JIS is a super huge headache saver.

Here's the impact I bought, the hobbit laughed and I think I heard it say, "none shall pass!"

On a side note, while waiting for parts to arrive I decided to wrap my exhaust with some left overs I had. Would be interested to hear peeps thoughts on wrapping an exhaust. Advantages / disadvantages? (edited)

Promas can become reasonable sounding pipes with wrap and a better silencer. The wrap really helps though

any effect of the wrap on temps? It's gotta keep your pipe identifiably warmer, but being still well below appreciable radiation, the heat from condunction off the inner surface i wouldnt expect to have any effect at all on the gas going through it, especially on the time scales that gas is in there. I mean you've got a fraction of a second residence time.

Never thought about noise, just never thought about it. makes sense.

I never liked wrap because it cost some additional money and can help keep water on and accelerate rusty

but it does have the advantage of not scorching your leg when you idiotically lean your calf into the chamber.

Pulled the case apart, was pretty easy. Interesting that the Phillips head screws where loose after the case was apart. Just unscrewed them by hand.

Since I'm changing out the crank should I replace these bearings since everything is apart? I've checked its tolerances and they are perfect. No wiggling / movement any direction. Seems like a pain to take out.

i still have a stack of those bearings cuz last time i ordered some i got like 25, still got probably half left.

worth doing, but get good bearings and check the RPM ratings. it'd be a shame to not replace it when you've got the easy opportunity, but it'd be a bigger shame to replace them with crappier bearings that fail when the OG ones were totally fine...