1985 Harris Performance (UK) Hand-Built 250cc Rotax GP Race Motorcycle - $5,200

[m in sc]

still in garage.  Just got the starter stuff 2? weeks ago and a right hand sidestand just showed up a few days ago. I've been taking g ot easy w bigger projects temporarily (I'm ok now) but had surgery and had to take ot easy, so focused in smaller jobs till I was back 100%, which is like this week. it's def a long term one.

[m in sc]

I have some cad work to to to make an adapter plate and adapter spool for the clutch, Cartier bearing and convert to a hydraulic actuator.  needs to all be reversible,  buy it's on track.

[grcamna3]

Very nice 250 race bike.

[RDnuTZ]

Cool  Hope it wasn't anything too serious. Raise a glass to a speedy full recovery

[teazer]

That HPI ignition is interesting.  Is it programmable ?

[m in sc]

not this one, but you can get a programmable box for it from them

[RDnuTZ]

something similar...

https://www.vintagemx.us/cgi-bin/racephoto.cgi?3ee0d6965c134c90b8b8e223549259fa

[m in sc]

doesn't seem like a huge step forward, but it is. Will make working on it much easier to deal with.

[Kawtriplefreak]

  

[SoCal250]

 

[stresa]

something similar...

https://www.vintagemx.us/cgi-bin/racephoto.cgi?3ee0d6965c134c90b8b8e223549259fa

@RDnuTZ,
the bike in your link is a very different breed. 1 Cylinder 4stroke engine.
Regards Uwe

[RDnuTZ]

Nice catch. I did not know Rotax even made 4 stroke cycle motors 

[m in sc]

got an adapter 3d printed up.  test fit, now on to the internal gear carrier and support bearings. 

[SoCal250]

Nice catch. I did not know Rotax even made 4 stroke cycle motors 

Rotax made a lot of 4-stroke engines (BMW, KTM, Aprilia, Buell, etc)

[m in sc]

more deep dives into modeling the prototype adapters before getting it made. too much to explsin at this point. but it's coming along.