Topic: Phaedrus: CB750 RestoMod - Update: 09/23/21 w/ new video

[MCRider]

Say the gold edges on the rotors is kinda nice. Hope it holds up under use.

I agree that adding contrast is a good thing, thats always been one of my design philosophies.  Too much of any one color can be overpowering.

mystic_1

I wasn't expecting the gold edges, the powdercoaters just masked it that way. But once installed, the edges never touch anything, so maybe it will hold up.

It's really only 2 colors and chrome. But I'm trying to alternate them from front to back.

The black is there with the Orings in the passenger footpegs, the oil cooler, the ribs in the tappet covers, the rear shock springs (though they may become gold as well). The pods (yes I'll run pods, never had trouble before) and peg rubbers give some black to the middle.

I may paint the cylinder black and rub off the edges of the fins, etc.

[MCRider]

Found them! There was: Plum Crazy (purple)-FC7, Sublime (green)-FJ5, Go-Mango(orange)-EK2, Hemi Orange-EV2, Top Banana (yellow)-

[MCRider]

Couldn't wait, here's what the gold gas cap would look like




May not be the only one, but I've never seen a non-chrome gas cap before.

Since the tank must be redone, I'll be rethinking the gold leaf wolf's head and the blue and magenta "Miami Vice" pin stripes.

But the purple stays.   

[Ecosse]

just a thought since you're adjusting the graphics: what about gold and black accent stripes to replace the miami vice ( ) lines and a more realistic but still stylized wolf's head? or, something similar to folk art or germanic art?

below is just something vaguely along the idea i was thinking of. i know it may be a bit too menacing. 

[MCRider]

just a thought since you're adjusting the graphics: what about gold and black accent stripes to replace the miami vice ( ) lines and a more realistic but still stylized wolf's head? or, something similar to folk art or germanic art?

below is just something vaguely along the idea i was thinking of. i know it may be a bit too menacing.  

Excellent. I want to thank you for your contributions to this build. You named the genre (it was you I think) "Super Standard", told me about Cryogenics, and now the paint scheme.

I had thought about gold striping but was stuck on the second color. Black should do it, keeping it to the 3 colors Purple, Gold and Black...and chrome.  Though I'll still give it some thought.

I didn't like this head on the purple tank. Skull too small and mane too big and too tame looking. The one on Phaedrus I was more proportional, with blood off the teeth.  Yours is the best so far. Yes I want it to look mean.

[MCRider]

Just got back from the NDT shop. "Acuren" is the name, some big conglomerate that now controls all the Non-Destructive Testing in the world i think. Very impressive X-ray "booth" about the size of a 2 car garage.

What I went in for was magnifluxing, though they don't call it that anymore. Magnetic particle something or other.

Both primary chains OK. So off to Cryo soon.

But the big surprise was out of 20 rocker arms 12 were "unacceptable"! I got my 8 that I need.

But I was surprised. These all came out of salvaged motors, likely never raced or abused more than any other. The tech said the cracks may polish out and I could have them retested. But its pricey.

Has anyone experienced or had rockers polished?

I mean I have never even heard of a CB750 rocker arm failure particularly in the applications I've experienced and intend to experience. (Less than the highest performance, redlines at sub-9,000.)

Have you?

[wannabridin]

Just got back from the NDT shop. "Acuren" is the name, some big conglomerate that now controls all the Non-Destructive Testing in the world i think. Very impressive X-ray "booth" about the size of a 2 car garage.

What I went in for was magnifluxing, though they don't call it that anymore. Magnetic particle something or other.

Both primary chains OK. So off to Cryo soon.

But the big surprise was out of 20 rocker arms 12 were "unacceptable"! I got my 8 that I need.

But I was surprised. These all came out of salvaged motors, likely never raced or abused more than any other. The tech said the cracks may polish out and I could have them retested. But its pricey.

Has anyone experienced or had rockers polished?

I mean I have never even heard of a CB750 rocker arm failure particularly in the applications I've experienced and intend to experience. (Less than the highest performance, redlines at sub-9,000.)

Have you?

what all did you have tested using NDT?  also, how much did it cost?  if you don't mind my asking, that is...

and how much does cryo cost?  i remember reading it somewhere else in here, but i can't seem to find it again...  also, what all are you getting done?  i have a metallurgy B.S. and i'd just like to see what parts people are hardening up!!   

[MCRider]

Just got back from the NDT shop. "Acuren" is the name, some big conglomerate that now controls all the Non-Destructive Testing in the world i think. Very impressive X-ray "booth" about the size of a 2 car garage.

What I went in for was magnifluxing, though they don't call it that anymore. Magnetic particle something or other.

Both primary chains OK. So off to Cryo soon.

But the big surprise was out of 20 rocker arms 12 were "unacceptable"! I got my 8 that I need.

But I was surprised. These all came out of salvaged motors, likely never raced or abused more than any other. The tech said the cracks may polish out and I could have them retested. But its pricey.

Has anyone experienced or had rockers polished?

I mean I have never even heard of a CB750 rocker arm failure particularly in the applications I've experienced and intend to experience. (Less than the highest performance, redlines at sub-9,000.)

Have you?

what all did you have tested using NDT?  also, how much did it cost?  if you don't mind my asking, that is...

and how much does cryo cost?  i remember reading it somewhere else in here, but i can't seem to find it again...  also, what all are you getting done?  i have a metallurgy B.S. and i'd just like to see what parts people are hardening up!!   

What got me going on the NDT was that the Cryo guy said he wouldn't want to freeze a used chain unless it was checked for flaws first. So I threw in 20 rocker arms with the chains to make it more cost effective. Still it was $225 which was way too much, to answer your question.  But, I'm moving on.

The Cryo is $25 per 10lbs which is a smokin deal IMO. I'm doing it as much for the friction reduction as the strengthening. My first Cryo batch was 3 kickstarter shafts, as they are prone to breaking with high comp motors. They were shot peened as well.

So, the cryo guy will get the rocker arms, the cam towers, the cam, the cam sprocket and the HD cam chain, the primary chains, the bulk of the transmission gears and shafts (someone on the forum said they do this a lot with their sports car transmissions as tranny gear friction really sucks the horsepower) the primary and driven sprockets, the lower fork legs, and anything else I can conveniently come up with. Should cost less than $100.

My engine won't be set up for maximum production of HP, but what it does make I don't want to lose to friction.  Besides it will be a cool thing to have on the "resume".

Always interested in an educated person's comments.

[MCRider]

PS I have received a PM from a well respected and highly experienced SOHC engine builder. Said he's never seen a broken rocker arm either. Neverthelless the testing shows flaws which are at least surface flaws but maybe not material.

[mystic_1]

Hey Ron, I think that raised section on the gas cap wants to have something on it.  Maybe a pinstripe or design of some sort.

mystic_1

[Bill/BentON Racing]

MC,looking good,you having fun ,I can tell,I have a gold plated(Browns)oil dipstick cap on avatar bike.I think your gold gas cap would contrast even better and add a little flash 24k gold plated!!,Bill(price is usually double chrome price).

[MCRider]

MC,looking good,you having fun ,I can tell,I have a gold plated(Browns)oil dipstick cap on avatar bike.I think your gold gas cap would contrast even better and add a little flash 24k gold plated!!,Bill(price is usually double chrome price).

Thanks Bill! Gold Plated would be way cool.  Maybe later  But for now the reason I went with powder over chrome was $$. Powder is real cheap.  With HondaMan's bolt and nut gas cap pins, it would be easy to swap out later.

BTW, what about rocker arms? You ever see one break on a CB750?

[Bill/BentON Racing]

Rods,valves,guides,cylinder heads,pistons,cams,cases,but not a rocker arm!,Bill

[MCRider]

Rods,valves,guides,cylinder heads,pistons,cams,cases,but not a rocker arm!,Bill

Thanks.

[MCRider]

Wel good news and bad. Good first. Installed new grommets in oil tank.





Installed oil tank and for looks, the side cover and dip stick. Note reflection of dipstick... in the seat.   (Gotta do something with the colors on those shocks. Maybe quickie paint the collars gold and the springs purple to match the tank.)



For looks, the left side with sidecover. Note the proximity of the top front corner of the sidecover to the frame gusset...



Now the bad news. When extracting the side cover from the new grommets, I pulled a little hard, the side cover pivoted on the front grommet into the frame gusset and "SNAP", the corner broke off.



So sad. That cover had already been repaired once. It would truly have been sad had I not already decided that paint job was out.



But that guy has since retired. So I'll try this guy for this repair...

http://expertplasticwelding.com/
I've spoken to him before about other things and he was very nice about, so I'll give him the bus.

Last look: gold instrument rings.



What else did we do today? Got the gas tank boxed up and sealed for restoration. Boxed up the parts for Cryogenics of Indy pickup tomorrow. Includes the undercut transmission from APE:



You can see how the base of the dog is slightly smaller than the end. It is exaggerated in the picture due to how the machining marks are, the taper is about 3 degrees I'm told. Should help me with my power shifts.    APE does 4 cuts for a fee. Usually its all the upshifts. Addtl fee for the downshifts. They accomodated me by trading the 4-5 upshift for a 3-2 downshift. Makes more sense for me. I couldn't see paying for all, the way I ride.

Finished masking the motor for paint, made a short list of missing hardware. Nice full day.

[CBJoe]

I'm not a big purple fan... but I like it more and more as I see the coloured bits get attached.
Bummer about the cover, but at least it broke now and not after the final paint job.

I think those shocks would look good w/ gold replacing the blue but leaving the springs black.  Colouring the springs might be a bit too much.... but I'm not to be trusted as I still have to have my wife approve all of my colour coordination 

Cheers, Joe

[HavocTurbo]

Well I need a new keyboard now because I drowned it in drool....

Absolutely gorgeous.

Are the collars on the shocks aluminum? How about anodizing?

[MCRider]

I'm not a big purple fan... but I like it more and more as I see the coloured bits get attached.
Bummer about the cover, but at least it broke now and not after the final paint job.

I think those shocks would look good w/ gold replacing the blue but leaving the springs black.  Colouring the springs might be a bit too much.... but I'm not to be trusted as I still have to have my wife approve all of my colour coordination 

Cheers, Joe

Gold on the collars and black springs may be the way to go.

[MCRider]

Well I need a new keyboard now because I drowned it in drool....

Absolutely gorgeous.

Are the collars on the shocks aluminum? How about anodizing?

Seem to be. I'll give a call to an anodizer.

I should have tossed them in with the PowderCoating I just had done. If I can think of a few other pieces to make it worth their while, I'll do another batch.  There is no gold on the right side of the wheel. The chrome on the brake stay is pitted though it looks good in the picture. Maybe it and the brake actuator rod, and the shock collars. Hmmm...

[MCRider]

Fuel Tank is on UPS truck to Moyer Tank Renu. Spoke to Jesse, doesn't anticipate any problems fixing me up. Will call with estimate upon receipt. I expect $300(+)

http://www.gas-tank.com/bike.htm

Side cover on truck to http://expertplasticwelding.com/

Spoke to Owen about the sidecover. He confirmed it is ABS and weldable. But being 37 years old the stuff that makes it flexible has outgassed to the point where it is very brittle. That is what I observed as when it broke it was a crisp "SNAP" which surprised me. He said upon welding other cracks often appear and he has to chase them with the welder until he gets them all.  $40 round trip.

[Frankenkit]

Hey MC, if you're doing this bike totally stock and NOS, why not just buy NOS side covers?  They seem to be available everywhere for 750s and I'd hate to see you go with 37 yo side covers that are so delicate when you can have new, relatively flexible and durable ones.

Folks with 650s don't have that option; our side covers are unobtanium nos these days, so I want to live through you vicariously.

[MCRider]

Hey MC, if you're doing this bike totally stock and NOS, why not just buy NOS side covers?  They seem to be available everywhere for 750s and I'd hate to see you go with 37 yo side covers that are so delicate when you can have new, relatively flexible and durable ones.

Folks with 650s don't have that option; our side covers are unobtanium nos these days, so I want to live through you vicariously.

Thanks for the ideas. I'm not committed to totally stock, so that's not an issue.  They are the original side covers, so that's one sentimental reason. I did review the offerings at eBay and the left side covers were either the wrong year with different shaped emblems,or they had a crack in them like mine where the first weld job is. That was a common area to crack. The one i did find that was worth having was going for nearly $100, as i would expect it would. A $40 repair is fair to me.  I'll Just need to be careful with my removal technique. I had just installed new rubber frame grommets and they were holding on real tight.

Motogrid.com has them at $80 to $107 but listed "unavailable".  There is an aftermarket supplier, but I've heard mixed reviews about fit and I don't think they have the emblem detents.

Yamiya has them as a set only for $300. They probably are actually new repros and hence "soft", but too pricey.  They also have finned aluminum ones for $450 a set. Way cool.

According to Owen, even a NOS side cover would be brittle unless it had been sealed in a bag, as its time, not exposure that ruins them. Time to outgas the polymers that keep them flexible.

650s are an interesting situation. I didn't even know they existed until i joined here. 

[Caferacernoc]

What about David Silver for the sidecover?

http://www.davidsilverspares.co.uk/parts/part_29417/

[MCRider]

What about David Silver for the sidecover?

http://www.davidsilverspares.co.uk/parts/part_29417/

I never think to look there. That looks like a decent piece especially if one didn't have the stocker to work with. They do disclose that its not a Honda item and it has that look to it.

Nevertheless mine is already on its way to CT for repair, so thanks for the suggestions and maybe someone else reading this will benefit from it.  Maybe I'll benefit from it later.

[CBJoe]

Well I need a new keyboard now because I drowned it in drool....

Absolutely gorgeous.

Are the collars on the shocks aluminum? How about anodizing?

Seem to be. I'll give a call to an anodizer.

I should have tossed them in with the PowderCoating I just had done. If I can think of a few other pieces to make it worth their while, I'll do another batch.  There is no gold on the right side of the wheel. The chrome on the brake stay is pitted though it looks good in the picture. Maybe it and the brake actuator rod, and the shock collars. Hmmm...

Rod, Stay, and Collars would round everything out pretty well me thinks....