Topic: I've been K0'd!

[Don R]

 This trans was in a box, I noticed the rings around a couple of the gears, does that make it an F transmission? The final gear has the same tooth count as the one that was in it. It's been in the solvent tank but still needs to be cleaned.
 An old shift fork was rubbed pretty bad also. I need to use the ones that came with this trans if I use it.

[PeWe]

If you need to verify the trans to be K0-K6 vs later, F included
http://forums.sohc4.net/index.php?topic=169359.msg1965282.msg#1965282

The later trans has different gear on final shaft.

Here early (left) vs late (right)
The early one got the late final gear with new bearings after photos were taken to match the later trans that engine will get. Higher revs on 4-5.

That engine not yet assembled.

[Don R]

 I have installed a backcut F2 trans in a K6 case, so am a little schooled in the differences but that engine is still on a stand waiting for a cylinder and pistons that may hold up to the turbocharger. Too many projects get in the way.

[PeWe]

I have not assembled my bottom end yet. K5 number (K2-75 here)
Also backcut late trans.

[Don R]

  I've tried some different trans parts, I got a couple from a mini sprint car guy. The downside is it isn't one or two complete matching transmissions. I've been able to get it to go through the shift sequence a couple times but fifth is sometimes an issue. I have the original 1970 narrow path shift drum but was trying a later one, I may go back to the original and try it. It seems like the center shift fork is hanging up, it keeps trying to move the shaft with it. I cleaned and lubed it but not good enough apparently.  One mainshaft cluster had one ringed gear, it had the same count as a different non ringed one but the book has a different number of teeth.
 I called a wasted day and came inside.

[Don R]

 It was missing a thrust washer (found on the bench) and haven't put the neutral safety switch in it yet. Those would probably make it shift properly.

[Don R]

 I returned #1 K0 back to its wire wheel stock exhaust condition, it was a former BOM winner with Lester mags. It has the proper K0 front hub and early rotor and a 2-hole rear hub although riding on new spokes and DID rims. The wrinkly seat is an original. It got new BT46 tires this time.
  Building these wheels took a long time collecting the parts, and a covid project finding rims and re-lacing them. I finally put new tires on them and installed them.

[PeWe]

Those wheels make bike look very good!

[grcamna2]

The paint is awesome Don 

I think your K0 is a K-nock O-ut    

[Don R]

 Thanks, compared to the pic on page one there is quite a difference.

[BenelliSEI]

That bike has come a long way. Looks fabulous!

[HondaMan]

Ah, and in my favorite color, too!

[SOHC4 Cafe Racer Fan]

This bike still looks like a BOTM winner!

[Don R]

 Thanks. I even have an early head diecast motor in case I want to get really crazy going original.

[PeWe]

This bike still looks like a BOTM winner!

I fully agree with you.
I nominate the bike (and owner) for BOTM!

[Prospect]

Looks great!

[Don R]

 I got the diecast out for a ride today, I went to help a friend wire a relay onto his 52 chevy pickup.
  It turns out he had an award winning chopper shop once. He was even invited to do a biker build off, the problem was he didn't have the $150K he needed to build the bike. I saw the trophies, magazine covers and the pictures. 

[Don R]

 I dug through the shock tote and pulled out a set of bent shaft, aluminum top end shocks with 3 position adjusters. I pressed them apart and removed all of the accessories. Later this winter I'll check out the repro Z1 Sandcast shocks to see if I can swap the 5 position adjusters off of them.   
 My guess is those old shocks had been mounted on lowering blocks. 

[Don R]

 I stumbled across this pic of the red sandcast and his brothers this evening. I resolved to get it over 10,000 miles this year.

 Gold is almost all original except the paint, seat and exhaust, Blue-Green was totally gone through by me. I repaired the frame and built the 836, it still has a no number diecast engine waiting for a rebuild.
  The red sandcast was assembled new by a friend Charlie that runs a mom-and-pop bike shop, the week before he left for Vietnam. It was bought new by Gene, a guy my brother knew, I saw him at work from time to time. A good friend was buddies with his son and grew up at his house, Gene passed and then my old Honda guru Tom owned it. He didn't title it or get it running. I used to take pictures of the cable and wiring routing for my blue green bike assembly. ALS took Tom from us, and I bought it at his estate sale. Later, his family offered to sell me the drag bike and I got it too.

[BenelliSEI]

Don….. did you repaint the red one? Looks lovely.

[MauiK3]

beautiful fleet of bikes.
Awesome

[Don R]

Don….. did you repaint the red one? Looks lovely.

  Yes and no, the airbox and sidecovers were painted, the rest is original. The PO's son was riding it to school and one day he pulled the motor and had a few parts chromed.  The Dad had a cow and once it was back together neither one ever rode it again. After the Dad passed away, the Mom asked the son if he wanted it and the sour grapes made him say no. My buddy that had always serviced it bought it for $500 and then let it sit in the "Big 4 Bike Shop" until he was gone and I ended up with it.

[BenelliSEI]

Don….. did you repaint the red one? Looks lovely.

  Yes and no, the airbox and sidecovers were painted, the rest is original. The PO's son was riding it to school and one day he pulled the motor and had a few parts chromed.  The Dad had a cow and once it was back together neither one ever rode it again. After the Dad passed away, the Mom asked the son if he wanted it and the sour grapes made him say no. My buddy that had always serviced it bought it for $500 and then let it sit in the "Big 4 Bike Shop" until he was gone and I ended up with it.

Great story. It’s great that you have it.

[PeWe]

Really nice bunch of bikes.
Sell them $$$$$$ or keep them must be a dilemma.
Stock early CB750's are very attractive for many.

[grcamna2]

I stumbled across this pic of the red sandcast and his brothers this evening. I resolved to get it over 10,000 miles this year.

 Gold is almost all original except the paint, seat and exhaust, Blue-Green was totally gone through by me. I repaired the frame and built the 836, it still has a no number diecast engine waiting for a rebuild.
  The red sandcast was assembled new by a friend Charlie that runs a mom-and-pop bike shop, the week before he left for Vietnam. It was bought new by Gene, a guy my brother knew, I saw him at work from time to time. A good friend was buddies with his son and grew up at his house, Gene passed and then my old Honda guru Tom owned it. He didn't title it or get it running. I used to take pictures of the cable and wiring routing for my blue green bike assembly. ALS took Tom from us, and I bought it at his estate sale. Later, his family offered to sell me the drag bike and I got it too.

Yes that set of K0's Are NICE Don.