back on track building the CH250 Spacy/Elite

You could pretty say this is a sad excuse for a blog. The latest entry was about six months ago! I've been busy moving from the old workshop to the new one, making ends meet to finance that whole enterprise and other distracting business. 
But I decided no more and set myself a dead line. I entered a bike build-off contest which takes place on September 24-25, so now I have a date to work towards to.

I was lucky to get myself a donor bike, a CN250 clone with only 1600 kms on the speedo, that has a good running engine.Also  parts like the radiator and hoses have a better fit then the Spacy/Elite parts.
I lengthened the fork stem of the RS125 front fork and was able to refit the original bearings with only a 25 to 30mm shim on the bottom.
The rear wheel still aligned on the CN250 engine, but the rear shock mounts have to be widened a bit at the frame.
I have to build some struts to strengthen the engine mount to the top of the frame..

new front fork setup for the CH250 Spacy/Elite

I found the perfect front fork for the CH250 Spacy/Elite; a 2001 Aprilia RS125 upside down. It has the proper length and make the whole scoot a lot more beefier.

I will probably will need to lengthen the stem with the original stem and make a bushing for the bottom plate to fit the fork.

I have to replace the brake caliper to the right side of the fork. Luckily you can flip the original front wheel axle..

DIY tyre blaster for the Spacy/Elite fatty

Built myself a tyre blaster from a compressor tank, 11/2 inch water valve and pipe. Works nicely!

Spacy/Elite swing arm so far

Been a while since my last post. The swing arm and shock mount is almost finished. Only some small reinforcements. But it is working; I've installed two 245mm Forsa shocks and a stretched 120/90-10 Pirelli SL90 tyre. It has got enough clearance between engine and back fender...

Elite/Spacy at the Rusty Gold Swap+Meet Amsterdam

Last Sunday I attended the Rusty Gold Swap+Meet in Amsterdam to show my freshly built motorcycle work bench. I needed a bike to show how the lift mechanism worked, so I took my fatty stretched Spacy/Elite. Not in riding condition though…

Definitely need to get it back on the road this year!

quick tyre flip for the Helix and some work on the lathe for the Elite fatty

 Used the drill press to release the old tyre from the rim. Quick and easy without tyre spoons flying around...

 And some good leg work...

Voila, back on nice new 120/70-12 rubber

 Made a bearing cup for the right swing arm on the Spacy/Elite. It fits right in a 57mm inside tube.

Had to drill a new hole for the valve on the other side of the steel rim and close the other side. My initial tyre 225/45-10 turned out to have too little clearance to the engine. I'll probably end up using a stretched 150/80-10 inch tyre.

the subframe part1 is on the frame

Today Jeroen welded the subframe. It fits nicely between the frame and side panels. The right engine cover sits right behind the side panel. This Friday I'll try to make the bottom part of the sub. A triangle from the center stand bolts to the sub.

drawings for the subframe and swing arm CH250 Spacy/Elite

I'm making drawings for the subframe and swing arm by making templates on paper from gaskets and pin gauges. After scanning them into the computer I use Adobe Illustrator to make dxf files.

working on the stretch subframe CH250 Spacy Elite

I'm working on the subframe to determine how long it needs to be. The clearance between the wheel and the spring was practically zero so I made the offset 45mm instead of 41mm. I'll be making a 4 mm spacer between the hub and the wheel. i hope I won't have to adjust the frame for the cylinder head.

the CH250 engine is back on the frame

I put the engine back on the frame to start working on the subframe. It needs an offset of 41mm. With the use of templates I'm making a drawing to build the right side swing arm. 
I am using the ComposiMo Yamaha Zuma stretch as a starting point. Credits there.
I'll have to remove some parts of the frame in the back, because I decided to go for a 170mm/ 6.7inch stretch. Pretty long but it can use a serious stretch visually. It will be trial and error to find the right length.

getting somewhere with the CH250 Spacy Elite hub

Today, I did some work on the hub. I made a removable center piece, so you can fit different rims.This one's inside diameter is 62mm.If I want to change it I can change the center ring.I have to find M10 lug bolts, not very common apparently. The second option is to use long M10 press bolts.Or make the holes larger to fit M12 bolts.

The next thing is to fit it on the frame and see what the offset will be.