GPR Camp: Replica Racers

Yeah of course, Paypal is the safest for you too.

I can source it whenever you need it. Dont really have the time though to plan/manage the shipping, so if you can do that part, then just ask for it.

toratora wrote: ↑

Sat Jul 27, 2019 9:39 pm

TRT 2Fast 100cc Derbi Euro3

Hey
I just looked closer at the numbers what you wrote up on the paper. At the exhaust its 28mm+27mm=55mm(215 degree exhaust)
And at the transfers its like 11(or 14mm)+38 thats not really 55. And there is no difference at the bottoms.
Timings seems to be waaay outta.

Are you sure that you had the right numbers measured? would be interested in the real ones

Pretty sure those are correct. I’d go check, but the crazy witch of a landlady destroyed all that stuff.

Are you counting the in-between space?

toratora wrote: ↑

Thu Dec 19, 2019 7:39 pm

Pretty sure those are correct. I’d go check, but the crazy witch of a landlady destroyed all that stuff.

Oh yeah sorry forgot about that

Check the heights on the pic. If you read it down than you get like crazy big degrees and you dont even get the same height at the exhaust and at the transfers.(from the bottom edge of the ports to the cylinders top edge) Transfers would have to be at least 3mm upper than the bottom of the exhaust port.

I’m quiet curious

Hopefully soon I’ll find a place, and then I can start to sort through what’s still left.

All the measurements are from the top.

I am very serious about an engine though. Please look for one!

Scotty and I were chatting about the measurements, and it does seem that the 28mm of the exhaust port is in error. I did some quick math, and Photoshop measurements, and came up with 23mm. I must have written down the port width number on the paper originally. Scott is going to put the drawing in his CAD app, and get a more accurate view. I’ve updated the original image.

Okay that explains a lot , that would be around 192 degree exhaust. Thats pretty fair. Probably the exhaust compensates the high transfer degree. This is a pretty good cylinder overall

Hey,
Could you help me out a littlebit?
I would need these numbers from your 2fast 100cc piston. If you could help me out I would be really thankful.


Im searching for a bettrr piston for my cylinder

Hey K,

I would if I had things not in storage. I’m still currently homeless looking for a place. All my stuff is in storage. I got the 899 out today so that I could ride it to school. First time I've ridden since October!

Hopefully I’ll get a place soon, but even then I'm taking 16 units of math and programing classes so time will be none existent. Apologies!

Have you considered contacting 2Fast? He was super nice when I interacted with him. I’ll be contacting him again later this year as I hope to make another run at moto riding in Japan this summer—but first I have to source a Euro3 engine, and so far that hasn’t gone so well.

Hope you will find a place to live

Ive tried contacting them but no response yet. It was like 2 weeks ago or something like that.

As for the engine I have one in "stock", but you know, i dont really know the shipping to the US