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Topics - Mike on a bike

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1
CB750 / CB750 K6....Is this compatible?
« on: July 12, 2019, 07:11:44 PM »
OK Ladles and Jelly spoons today's task if you care to accept it is the identification of the clutch basket I have just purchased.
I bought a complete clutch basket from the bay of fleas and it seems to be different to the one in my bike. The one on the right of the pics are from my bike and the ones on the left are the replacement ones. So my question is simply this.....Is it just a straight swap or am I heading for disaster if I fit the new one?

2
CB750 / Starter clutch problem.
« on: May 11, 2019, 09:44:29 PM »
Hello to you my learned colleagues, I had a problem with the starter clutch and after stripping found the springs were completely knackered. I replaced them with new springs and all was good. The bike has stood for about 3 years since then due to the build. Everything is all back together again and I recently tried to get the engine running again. The clutch was working as it should for quite a few spins then suddenly it went back to sounding like a bag of spanners again and refused to turn over the engine. I have stripped it again and can't visibly see or feel anything wrong with the clutch assembly but I did find the large clutch sprocket to be floating on the spindle. It engages as it should but this float is now worrying me, should there be some sort of spacer there to stop this floating? I hope the pictures explain my problem better.

3
CB750 / Bolt torque
« on: April 19, 2017, 10:25:25 PM »
Can anyone tell me what the correct torque is for the sump plate bolts please?
Ta muchly.  :)

4
CB750 / Turning an engine upside down
« on: November 14, 2016, 08:50:26 PM »
I need to turn my engine upside down to strip the bottom of paint. The engine is all together and have no reason to split the engine as it has just been rebuilt. I have it mounted on an engine stand that can flip it through 360 degrees. I have drained as much oil as I can as I need to change the sump plate. My question is this, is it OK to leave the engine upside down for any length of time, will any oil get into places it shouldn't and cause any problems? I did have oil run out of the stater cover bolts when I had it on its side. I am trying to minimize any oil getting onto the aluminum I have just stripped for obvious reasons.

5
Misc / Open / *Yawn* Engine paint recommendations
« on: November 03, 2016, 10:19:04 PM »
OK folks, before you shoot me down in flames, I have spent the last few hours researching the forums for paint information. I am ready now to spray my engine and cant find any real hard info on what to use, I know there are lots of different brands and suppliers but no definitive answers to what is best. I see that POR15 is mentioned but this does not say that it is heat resistant or designed for engine use. There is stuff out there that also isn't fuel proof, some that looks good but holds the dirt after a while and some that scratch easily. So is there a one paint does all solutions out there? I only want to do this job once and I want to do it so it lasts.  :-\ :o :(

6
CB750 / CB750 MPG
« on: July 21, 2016, 07:56:11 PM »
What would be an average MPG for a k6 CB750. My chop only has a 2 gallon tank and was wondering how far I would get on a tank full. I think I might have to change my speedo to one with a zeroable tripmeter.  :o

7
Misc / Open / Engine stand
« on: April 16, 2016, 11:30:30 PM »
Does anyone know of any plans available to build an engine stand. I wil be tearing my bike apart soon and want to soda blast and repaint the engine.

8
CB750 / Breathers
« on: March 14, 2016, 10:42:52 PM »
Right, a rookie question. My engine has two breathing points, one on the cam cover and one on the crankcase. I am sure that I saw a picture once, quite a while back of the crankcase pipe attached to the oil tank. Is this correct or should both pipes just exit under the bike?

9
CB750 / Starter problems
« on: December 19, 2015, 09:36:30 PM »
I tried to start the bike today, and it sounds like the starter motor is failing to engage properly, it spins freely and sounds like a bag of spanners, only engaging once in 10 attempts. Anyone in the know who can point me in the right direction on how to fix this problem.

10
CB750 / A stab in the dark....Brake calipers?
« on: October 08, 2015, 09:38:02 PM »
OK, has anyone any experience or knowledge of early KO front brakes. I have an aftermarket caliper that was botched onto my fork leg which has made me purchase another leg. Has anyone found an aftermarket set up that bolts onto an early leg without to much meccano work. I don't know how early original set ups worked, were they good or bad? should I keep looking for another better set up?
This is going on my chopper so not a restoration job.

11
CB750 / Fork advice please
« on: June 28, 2015, 08:21:49 PM »
I need a lower fork leg and found this on the bay of theives.
It has an obvious crack at the top of the leg, so how important would this be as to the actual function of the forks/bearings etc. I can get it welded but would seek your advice first as I know sweet FA about these things.

http://www.ebay.co.uk/itm/331544353868?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT

12
CB750 / Weak spark help please
« on: May 03, 2015, 02:58:37 PM »
Hi folks, I have a problem with a weak spark. After trying to start the engine and not succeeding we went on a process of elimination coarse of action. I have replaced with brand new the following....Points, Condensers, Coils and Battery. After doing this I still have weak sparks at the plugs and points. We have connected the battery directly to the coils to bypass everything else but with the same result.
Can anyone tell me if the generator comes into play in any way to boost the amperage to create a better spark? Don't want to strip that if it is not necessary. Got no hair to pull out anymore so your help will be gratefully received.  :o :(

13
Project Board / "Second Chance" Project
« on: May 01, 2015, 07:20:49 PM »
Hi folks, been meaning to do this for a while now, so no better time like the present to get it started.
A brief history.
I have been biking since 1974 at a young sweet 17 years of age and started my first chopper build in1975. I had a dream and vision but no money, I was earning all but £8.00 a week back then so money was very precious to me. While having a beer in the pub with a mate of mine who had rich parents and no hassle to buy new bikes I was telling him what It was I wanted to do, his exact words to me were and I have never forgotten them "You wouldn't have a 'kin clue what to do" Well to tell you the truth I didn't have a clue, just a vision a dream and a lot of drive, and his words only spurred me on to show him how wrong he was going to be. It only took me 5 years to get my finished dream to car shows around the country and also picked up a few trophy's for my efforts. I was a rookie but I learned a lot. Check here for my official intro with pics .. http://www.sohc.co.uk/index.php/topic,7614.0.html
After selling my chop to emigrate the hankering for another custom has never left my side but life and family got in the way as it does.

Fast forward now to October 2014. Well my life took a change for the worst, I had a heart attack! albeit a mild one but non the less was a wake up call that the years are passing me by and my dream of owning another chop was diminishing. Well I had just sold my camper van that I had owned for 17 years and had a small stash of cash burning a hole in my pocket and whilst browsing ebay I saw a chop that had potential, most of the bits I would need were there along with a few bits that will go in the recycle bin. ;) Well the registration number sold it to me FEC 154T or as I read it FEC**IT, so that was that, and FEC**IT I went and bought it. And so begins my story and build.

I have called the bike "Second Chance" for a few reasons, firstly it's my second chance of owning another chop, secondly it is the second reincarnation of this chop and thirdly and more importantly it is my second chance at living after the ticker timebomb.

So guys 'n gals come and join me on my ride to freedom and fun!  ;D

14
CB750 / Electronic ignition
« on: April 05, 2015, 08:50:51 PM »
What are your guys views on the electronic ignition upgrade for the CB750. Is it worth forking out 100 gold coins for the upgrade?

15
CB750 / Engine installation time
« on: March 15, 2015, 09:44:26 PM »
Hi guys n gals, the time is almost here for me to put the engine back in the frame, having never been in this position before as I bought the bike with the engine already out of the frame I was wondering if there is any preferred method of man handling this heavy lump back into the frame. I have an aftermarket hardtail so not to much on the restriction side. Is there a preferred side to slide in from, which bolt to secure first etc. I do have a chronic back problem  and heavy weights are a no no for me, so I will not be alone when fitting it back in. Any advice or guidance greatly appreciated. I do have an electric winch hanging from the rafters so it that can help me I will use it. This won't be a final fitting as there are still lots to do to the frame before being stripped again for painting.
 :D

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