CR750 Replica

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CR750 Replica

Postby ratrap » Mon May 21, 2012 11:14 am

I am busy building a CR750 replica.
Difference is I am going to put it in road going trim.

Its been progressing slowly as things do when you have to fabricate without any plans or previous experience.
Lots of things cant be done until other aspects of the build have firmed up. The aluminium oil tank took three go's before it finally looked good and did the job of storing oil ;)
I need to start shopping for parts now, mostly period stuff that define the bike like footpegs, grips, rev counter and oil pressure gauge etc.

Bike as bought. An ex race bike ideal for chopping up even further.

CR750 003.jpg
As bought
CR750 003.jpg (77.73 KiB) Viewed 4525 times



CR750 002.jpg
As bought
CR750 002.jpg (87.13 KiB) Viewed 4525 times


A quick mock up to give me some inspiration before starting to strip the bike down.

CR750 005.jpg
CR750 005.jpg (64.11 KiB) Viewed 4525 times



More to follow if anyones interested!! :)
ratrap
 
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Re: CR750 Replica

Postby ratrap » Mon May 21, 2012 12:07 pm

Two nice examples of CR's


Image


Image
ratrap
 
Posts: 26
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Re: CR750 Replica

Postby Mr.Paynter » Mon May 21, 2012 4:43 pm

Wow! She looks like she will be absolutely gorgeous!
I cant wait to see even more!
Mr.Paynter
 
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Re: CR750 Replica

Postby ratrap » Mon May 21, 2012 5:02 pm

I'm told the motor has a big bore kit. Judging by the spare gaskets it came with looks like a 836cc kit.

CR750 007.jpg
CR750 007.jpg (72.02 KiB) Viewed 4502 times


Stripping to try different handlebars....the clip ons it came with are the best option
The bike has an early Goldwing front end to take advantage of the twin discs and better calipers while still being eligible for Classic racing.

CR750 015.jpg
CR750 015.jpg (79.87 KiB) Viewed 4502 times


Handy list of parts....

CR750 016.jpg
CR750 016.jpg (39.74 KiB) Viewed 4502 times
ratrap
 
Posts: 26
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Re: CR750 Replica

Postby buddy » Tue May 22, 2012 11:02 am

Gavin,

Once it's finished, I'll take it around Killarney for a photoshoot if you like. ;o)
buddy
 
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Re: CR750 Replica

Postby thomas » Wed May 23, 2012 8:36 pm

Hi
Take a look at http://www.m3racing.com/ . They're an American crowd specialising in racing SOHC 750's and CR750 replicas. They're expensive and you have the exchange rate & transport costs to contend with too - but the site is good at giving you ideas.

My 1971 Honda CB750 Four has the standard forks and master cylinder - and twin discs!

Cheers
Thomas
thomas
 
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Re: CR750 Replica

Postby ratrap » Thu May 24, 2012 8:43 pm

thomas wrote:Hi
Take a look at http://www.m3racing.com/ . They're an American crowd specialising in racing SOHC 750's and CR750 replicas. They're expensive and you have the exchange rate & transport costs to contend with too - but the site is good at giving you ideas.

My 1971 Honda CB750 Four has the standard forks and master cylinder - and twin discs!

Cheers
Thomas


Thanks discovered that site already!!
ratrap
 
Posts: 26
Joined: Mon May 21, 2012 10:39 am

Re: CR750 Replica

Postby ratrap » Thu May 24, 2012 8:50 pm

Cutting open the oil filter....doesnt look good!

CR750 020.jpg
CR750 020.jpg (80.76 KiB) Viewed 4459 times


Later I will look for a set of flatslides. In the meantime I will bead blast these and put them back into service...

CR750 027.jpg
CR750 027.jpg (57.45 KiB) Viewed 4459 times


Trimmed the gearbox cover of all the excess bits...

CR750 033.jpg
CR750 033.jpg (67.19 KiB) Viewed 4459 times
ratrap
 
Posts: 26
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Re: CR750 Replica

Postby ratrap » Thu May 24, 2012 8:58 pm

Trimming off the bar clamps

CR750 032.jpg
CR750 032.jpg (69.83 KiB) Viewed 4459 times



CR750 036.jpg
CR750 036.jpg (52.85 KiB) Viewed 4459 times


Next to go...to be replaced by an aluminium oil tank.

CR750 029.jpg
CR750 029.jpg (70.14 KiB) Viewed 4459 times
ratrap
 
Posts: 26
Joined: Mon May 21, 2012 10:39 am

Re: CR750 Replica

Postby Dorren » Tue Aug 07, 2012 1:37 pm

Hi Ratrap,
Ditto here, trying to build a CR 750 replica , but progress slow , to many other things get in the way , work etc.....
Got a K750 frame , wheels, motor (and not much else) from JHB and have begun collecting bits n bats over time. Managed to get last one-piece fairing from Bartel engineering in Ireland (he may still be making them) ,but hugely expensive to import. Have got a nice "old School" ReV counter(tho cable, not electronic) and Temp gauge on a lovely "ally" mini dashboard from bikespares in Bellville for R200 !! what a bargain !
Busy getting other bikes going now after winter layup , hope to progress a bit soon on the CR
Regards,
Dorren Jackson
PS. Like the overhead shot of that CR !! real inspirational stuff...
Dorren
 
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