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Author Topic: FRANKENHONDA II the 1982 DOHC CB 750F2 Build  (Read 55660 times)

Offline cb250nproject

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Re: FRANKENHONDA II the 1982 DOHC CB 750F2 Build
« Reply #370 on: Mar 04, 2018, 17:31:24 »
Looks much better, but I don't know that the pink string is on trend Ö

Crazy

Pink string is making a big come back Iím sure of it, a lot of quality bike builders are realising the true potential and versatility of pink string... wonít be long now and youíll be seeing it used on all of the BOM winners bikes


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first cafe build was an incomplete learning experience, more of a test run for the real thing FRANKENHONDA II

Offline The Jimbonaut

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Re: FRANKENHONDA II the 1982 DOHC CB 750F2 Build
« Reply #371 on: Mar 15, 2018, 11:55:31 »
Dude where you at?  You decide on what to do with the headlight/fairing?
"I'm telling you Donnie, nuthin' but nuthin' but right"

Offline cb250nproject

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Re: FRANKENHONDA II the 1982 DOHC CB 750F2 Build
« Reply #372 on: Mar 18, 2018, 06:53:18 »
Dude where you at?  You decide on what to do with the headlight/fairing?

Man I had to fly out to work stuck in the mountains for another month.

Iím thinking headlight and nothing more, but I have just gone and ordered myself a Wiesco 823cc piston kit from Dynoman got some air filters for the CR 29 while I was there, so the should be waiting for me when I get home.

Iíll have to remove the cylinder head get it bored and honed, should probably replace the valve stem seals while itís all out also

A friend of mine here has done the same to his and recommended a guy in boronia to do the work to the head should be a few hundred.

May as well go all out now.

Has anyone else done this upgrade Iím interested to hear how much it changed the performance of the bike.



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first cafe build was an incomplete learning experience, more of a test run for the real thing FRANKENHONDA II

Offline cb250nproject

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FRANKENHONDA II the 1982 DOHC CB 750F2 Build
« Reply #373 on: Apr 02, 2018, 05:30:50 »
So the 823 cc wiseco big bore kit arrived in the mail


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first cafe build was an incomplete learning experience, more of a test run for the real thing FRANKENHONDA II

Offline cb250nproject

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Re: FRANKENHONDA II the 1982 DOHC CB 750F2 Build
« Reply #374 on: Apr 24, 2018, 02:54:53 »
So I thought Iíd try to install the Morimoto led handlebar lights.

While I love the moto gadget gear I wasnít prepared to sell my kidney just yet to purchase it.

So my plan was to drill out the plastic stopper in the bar end and insert a rubber Gromit then run the electrical wire through the bar end.

Unfortunately what I didnít count on was the fact the plastic stopper was about half an inch thick

So I had to run with plan B, which was to install the electrical wires without the rubber.

I cut some string and ran it through the hole with the intention of using it to pull through the electrical wire. Being a little slow, I forgot to tie the other end off. So as I tied one end to the electrical wire i pulled the other end of the string back through the handle bar end.

That was the first time, as I attempted to pull the first one through the electrical wire slipped out of the string so I repeated the process until it was successfully through.

Then once I attempted to do the same with the right hand handlebar I realised the rubber tubing that was provided to wedge the handle bar end in was a larger external diameter , I searched the garage only to find one that was too small.

After a quick trip to the auto shop the guys they gave me some hose on the house I was pretty stoked. Then I finally completed the instal

I hooked up some power to see how she looks came up alright


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first cafe build was an incomplete learning experience, more of a test run for the real thing FRANKENHONDA II

Offline cb250nproject

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Re: FRANKENHONDA II the 1982 DOHC CB 750F2 Build
« Reply #375 on: Apr 24, 2018, 06:36:27 »
So next on the list was to bend the original R6 gear linkage to marry up with the gear selector.



I got out the MAPP gas and gently heated the aluminium before bending an angle into it



After two bends she was ready to fit

FYI it doesnít take very much to get the aluminium hot enough to bend


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first cafe build was an incomplete learning experience, more of a test run for the real thing FRANKENHONDA II

Offline LightsOut

  • Posts: 70
Re: FRANKENHONDA II the 1982 DOHC CB 750F2 Build
« Reply #376 on: Apr 24, 2018, 07:46:57 »
The constant gotcha moments of custom building :) Nice work on the turn signal install!

Rearsets and linkage look really good. Does heating aluminum enough to bend affect it strength wise? Not that pushing the gear position up and down is a lot of force, just curious.


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Offline cb250nproject

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Re: FRANKENHONDA II the 1982 DOHC CB 750F2 Build
« Reply #377 on: Apr 24, 2018, 07:56:27 »
The constant gotcha moments of custom building :) Nice work on the turn signal install!

Rearsets and linkage look really good. Does heating aluminum enough to bend affect it strength wise? Not that pushing the gear position up and down is a lot of force, just curious.


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I donít think overheating it is particularly good as it can result in cracking, aluminium doesnít change colour like steel. I would say I heated it for a minute maybe two before bending it.

Like you said the force to change the gears is very low.




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first cafe build was an incomplete learning experience, more of a test run for the real thing FRANKENHONDA II

Offline cb250nproject

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Re: FRANKENHONDA II the 1982 DOHC CB 750F2 Build
« Reply #378 on: Apr 25, 2018, 07:32:58 »
So today made a few more runs in the shed with my old man.

I removed the front end and brought it with me along with the tank, seat cowl and right handlebar

First job the old man turned up a bracket for the brake reservoir

The next job I tackled was fabricating the bracket for the front mud guard.

First I bent out the flat bar that would run along the inside of the mud guard. Who would of thought bashing out the flat bar would be so challenging, probably would have helped having the right tools. But a builder must Magyver when necessary so a piece of railway iron did the job.

Realising that I was going to need to bend the metal rod. I made a jig using some box tube and some 10 mm rod in hindsight I should have put in 3 pieces of rod.

It took a while to get the rods bent into the correct shape once done we tacked it on to the flat bar, then dad turned up some round mounts to weld on the ends so we could run bolts through.

Once done we drilled through the bracket and mudguard and put one pop rivet through, then I had to head home to put it back in the bike just to make sure the guard was straight. Tomorrow Iíll finish off the rivets. Iím thinking  once itís done Iíll spray it all mat black


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first cafe build was an incomplete learning experience, more of a test run for the real thing FRANKENHONDA II

Offline cb250nproject

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Re: FRANKENHONDA II the 1982 DOHC CB 750F2 Build
« Reply #379 on: Apr 25, 2018, 18:20:15 »
My brother made up some prototypes for my stickers.

Still need to make up and fit the blue stripes before making the proper decals, probably take about two weeks before itís all ready

Looks like the respray will happen next break, should give me plenty of time to strip and prep the tank.




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first cafe build was an incomplete learning experience, more of a test run for the real thing FRANKENHONDA II