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It's a nice project, best of luck.

Picture doesn't show the tank which was from memory dirty white perhaps with vivid marker scrawled uniflow. It was serious cool, just not pretty.

Hi Andreas, thanks for the suggestion. After a long time, I’ve found that what works best for me is a main exhaust port height of 50% of the stroke,...

Hi JVH, Saw your project with the RD 125, interesting. Seems like you're primarily doing simulations (I'm not), and possibly making a new cylinder....

generators actually, but that doesn't alter my point does it?

I like a wider angle tandem, you could reverse the cylinders for the off road version but it you do the tandem I like how Kawasaki supported the...

…and sure enough, now there’s talk of a 45 day cease fire. Basically might as well ignore anything the president says until something actually...

No airbox of pod filters - I'm guessing runs like shit and is more for looks than anything else

Well Spyder's a fancy pants and probably got the RR model.

Perhaps get you daughter or long suffering wife to sign off the aesthetics:innocent:

Odd I would have assumed they both as std had dynamo's... I seem to remember Bert Munro's Indian came with carbide lighting as he didnt want to $$...

You have a good memory. Are you suggesting my new build will be worthy of the same accolade? Ill only be responsible for the engine design and...

I seem to recall a certain ConcoursdeDungHeap prize 🤔

So riding all Friday. Wife says, are you getting out today. . . Um. Yes. Short ride in the bush. Gee some trees have come down. Last one. You...

So sane. I don't think the Iranians will be all that impressed (regime or population.) Isn't there a TACO in there as well, an extension to the...

my 1926 indian scout had one of those and my vincent twin

If I go to this effort I fully expect to be able to enter it. Used to be, if it was home made, it was acceptable. This will be completely home...

Well you could throw a CX500 crankcase in the melt pot which does two things. Make it derived from a roax engine. And gets another maggot off the...

They've got the tank 'Just right" Your mate could pass you a beer through the middle. I was a bit , hmm, about the Ti headers. But considering...

Totally sane.

Sanctuary generally do an amazing job :yes: https://www.bikebound.com/2026/04/04/rcm-693/

The component parts can be anything not manufactured for a race machine, ie those scooter/ small bike cylinders /cranks etc. OR - completely home...

1864 Pai Mārire ambush in Taranaki A British patrol was ambushed by Pai Mārire fighters near Ōakura. The heads of the seven men killed were taken...

My advice is to check the rules and read through them all. This one might not be compatible with a completely freshly designed engine: 1.a...