Topic: Examiner.com article: De-engineering the RC Engineering Honda CB750...

[gschuld]

JKBarberie,

Yes Welcome!  I spoke with Bill Silver several times during his time owning the bike, helping him research some of the RC parts, etc.  He sold the stroker crank and shorty Golden rods early on, sold the big cam, I actually ended up buying the springs, keepers, and titanium retainers.  Bill Silver seemed to be trying very hard to re-assemble a good solid motor, I recall that he reused the big bore piston/cylinder assembly, but used a factory spec crank/rod set.  I believe that he used a factory cam/spring/retainer setup as well.  It's an F engine with a K ported head and K layout piston set.  The stock cam could certainly be upgraded to a bit more oomph as it's now feeding a 1000cc engine.  If he used factory rods with factory rod bolts, that potential weakness should be taken into consideration when making cam choices.

Good luck with the bike.  You still have some neat RC parts on/in there...

George   

[BPellerine]

the weak bottom end would make me think twice.bill

[jaguar]

Very sad what happened to that bike.
Was fairly epic, then bought by a person with zero clue, half parted out and then put back together to off.

Methinks it was only bought to flip and the buy was upset that people didn't line up.

[BPellerine]

+1 jag when you even strip the springs and retainers out that really says a lot!bill

[jaguar]

Ruined the bike.

[PeWe]

The magic was all those special parts together in one engine. The parts interesting for a person that can make a cobra engine complete again.
It must have been possible to trade the engine for an original good working engine + $4000US?

[jkbarberie]

You are correct. The bike currently has a stock F3 crank and rods with the big bore kit.  Starts easy and runs good.  The golden rods and crank were sold.

[MCRider]

You are correct. The bike currently has a stock F3 crank and rods with the big bore kit.  Starts easy and runs good.  The golden rods and crank were sold.

Sorry I haven't read the full thread closely, just skimmed it. Are the stock rods actually the RC Big Bolt rods that were heat treated and shot peened? They would appear at first glance to be stock. The bolts and the small end bushing give them away.  They are said to be up to the task.

If truly stockers, still no reason why they won't work, just stay out of the throttle.

Easier said than done for some.   

[jkbarberie]

The bike actually has a stock CB750F crank and rods now. 

[jkbarberie]

George,
Thanks for all of the information.  I agree, there are still a few RC parts on the bike such as the exhaust, the engineered cases for the stroker crank, the pistons and barrels as well as the modified K head.  It had an RC engineering ignition, but it was taken off because it did not work.  I still have it.  I also have the duplex chain and sprocket set as well as a modified tail light bracket.  The tail light bracket was modified to clear the rear wheel with a long swing arm.  I have the drag bars that were on the bike a couple of cams.  One cam is stamped F12 and the other one is stamped K134.  Bill gave me a box of parts and these items are just off the top of my head.  Give me a shout if you need anything.   I don't plan to run this bike hard.   It is just going to be an everyday rider.  The condition of the chassis, especially the original paint (pristine) and the chrome is what attracted me to the bike.   Should I really be concerned about a stock crank and rods with 1054cc pistons?  I was thinking of picking up a stock motor and rebuild it with an 836 kit.  I don't know if there is any interest in the RC 1054 73mm pistons and barrels.  Any advise?

[scottly]

I don't plan to run this bike hard.   It is just going to be an everyday rider.

As long as you take it easy, the stock rods will probably be okay, but ONLY if you take it easy.

[jaguar]

The swingarm was removed and sold too if I remember right.

[Medyo Bastos]

i dont think they were really 73mm pistons.  the space between cylinders on the jugs is more than on a set i have...  i could be wrong though

[cbr954]

For an everyday rider I would definitely look at going with a smaller bore which you will probably need to go with a different head because it looks like that one was opened up to match the big bore.  Might be easier finding a stock running motor and just finish parting out the pieced together motor you have.  Its not an RC motor anymore it is just parts of a RC motor.

[jkbarberie]

You're right.  The bike now has a stock swing arm.

[cbr954]

You would more than likely make enough money off the RC parts to build yourself a good little stock motor.  I might even be interested in some of the parts

[jkbarberie]

You're probably right.  It is a possibility.  For now, my plans are to ride it.  I may buy another motor and rebuild it with an 836 kit then part out the remains of the former RC engineering 1160cc dragster engine.   Here is a pic to show what the former dragster looks like today.
Jeff