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Author Topic: A CR750 Build  (Read 68262 times)

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Offline H2Eric

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Re: A CR750 Build
« Reply #100 on: May 29, 2014, 09:58:25 AM »
Quote from: Carco on March 07, 2014, 11:00:35 AM
Here a pic of the mounted screen:




Carco

www.tr4-rally.com/cr750-parts.html


Anybody got one of those fuel caps lying around they don't want?

Eric
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Offline Sam Green Racing

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Re: A CR750 Build
« Reply #101 on: May 29, 2014, 05:30:44 PM »
I thought you had one coming from the guy in Chester ?

Sam. :)
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Offline MRieck

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Re: A CR750 Build
« Reply #102 on: May 29, 2014, 07:23:17 PM »
Quote from: H2Eric on May 29, 2014, 09:58:25 AM
Quote from: Carco on March 07, 2014, 11:00:35 AM
Here a pic of the mounted screen:




Carco

www.tr4-rally.com/cr750-parts.html


Anybody got one of those fuel caps lying around they don't want?

Eric
You asked me that years ago Eric....when I first met you. ;D I still haven't seen one. ::)
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Offline 01Thomas

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Re: A CR750 Build
« Reply #103 on: June 01, 2014, 11:39:43 AM »
Hello Eric
This seems to me to what is known as a "monza" style fuel filler cap. These are still available from various sellers. Do a google and  you'll come right. Just be aware that they're available in various sizes (diameters) and should you find what nyou're looking for, make sure you alsdo get the neck that it fits on.

regards
Thomas

Quote from: MRieck on May 29, 2014, 07:23:17 PM
Quote from: H2Eric on May 29, 2014, 09:58:25 AM
Quote from: Carco on March 07, 2014, 11:00:35 AM
Here a pic of the mounted screen:




Carco

www.tr4-rally.com/cr750-parts.html


Anybody got one of those fuel caps lying around they don't want?

Eric
You asked me that years ago Eric....when I first met you. ;D I still haven't seen one. ::)
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1977 Seeley Honda CB750F (F1) [Engine: CB750E-2551214 / Frame No: SH7-655F]

'96 Yamaha YZF750SP & '81 Moto Guzzi SP1000 & '80 Moto Guzzi 850 LeMans II & '82 Bimota KB-3 [Frame No 49] & '66 Ducati 50 SL/1 & '53 Miele K-50 & '38 Miele 98

Offline Sam Green Racing

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Re: A CR750 Build
« Reply #104 on: June 01, 2014, 02:40:07 PM »
Quote from: 01Thomas on June 01, 2014, 11:39:43 AM
Hello Eric
This seems to me to what is known as a "monza" style fuel filler cap. These are still available from various sellers. Do a google and  you'll come right. Just be aware that they're available in various sizes (diameters) and should you find what nyou're looking for, make sure you alsdo get the neck that it fits on.

regards
Thomas

Quote from: MRieck on May 29, 2014, 07:23:17 PM
Quote from: H2Eric on May 29, 2014, 09:58:25 AM
Quote from: Carco on March 07, 2014, 11:00:35 AM
Here a pic of the mounted screen:




Carco

www.tr4-rally.com/cr750-parts.html


Anybody got one of those fuel caps lying around they don't want?

Eric
You asked me that years ago Eric....when I first met you. ;D I still haven't seen one. ::)

Thomas, I think the cap being talked about here if the factory made cap, not the mass produced Monza style.

Sam.  ;)

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Offline MRieck

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Re: A CR750 Build
« Reply #105 on: June 01, 2014, 05:30:03 PM »
Correct Sam....the "real deal". ;) Same with the fuel petcock if I remember correctly.
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Offline Sam Green Racing

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Re: A CR750 Build
« Reply #106 on: June 01, 2014, 06:09:19 PM »
Yes Mike, I think the petcock came from the CR250 moto crosser of the day.

Sam ;)
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Offline 01Thomas

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Re: A CR750 Build
« Reply #107 on: June 03, 2014, 01:26:13 PM »
OK, thanks.
What makes the petcock from the CR250 special? Does it flow more, or what?
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1977 Seeley Honda CB750F (F1) [Engine: CB750E-2551214 / Frame No: SH7-655F]

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Offline napoleonb

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Re: A CR750 Build
« Reply #108 on: June 03, 2014, 02:17:47 PM »
From what I know and see form old pictures and books these taps/petcocks were used on several road-racing engines including the RC166/174 etc.
I don't know if they were used dirtbikes but its really no surprise if they did.

Paul McGhie supplied me with one of them, if you want to take a closer look here's mine: https://grabcad.com/library/honda-cr750-cb750r-petrol-tap-1
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Offline 01Thomas

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Re: A CR750 Build
« Reply #109 on: June 12, 2014, 03:04:25 PM »
In terms of internal design (spring-loaded tapered plug with orifices) it is similar to that fitted to the CB400Four.

Quote from: napoleonb on June 03, 2014, 02:17:47 PM
From what I know and see form old pictures and books these taps/petcocks were used on several road-racing engines including the RC166/174 etc.
I don't know if they were used dirtbikes but its really no surprise if they did.

Paul McGhie supplied me with one of them, if you want to take a closer look here's mine: https://grabcad.com/library/honda-cr750-cb750r-petrol-tap-1
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1971 Honda CB750 Four K1 [Engine: CB750E-1113521 / Frame: CB750-1113838]
1977 Seeley Honda CB750F (F1) [Engine: CB750E-2551214 / Frame No: SH7-655F]

'96 Yamaha YZF750SP & '81 Moto Guzzi SP1000 & '80 Moto Guzzi 850 LeMans II & '82 Bimota KB-3 [Frame No 49] & '66 Ducati 50 SL/1 & '53 Miele K-50 & '38 Miele 98

Offline Sam Green Racing

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Re: A CR750 Build
« Reply #110 on: June 13, 2014, 01:04:19 AM »
The tap that I mentioned that I was told came from the CR250 was only a single feed, as it would be if fitted to a single cylinder motor. I was told that that type of tap was used on the factory bikes, your guess is as good as mine.
Has anyone got any pics of the tap as fitted to the Daytona bikes ?

Sam. ;)
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Offline H2Eric

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Re: A CR750 Build
« Reply #111 on: June 13, 2014, 10:57:17 AM »
Quote from: Sam Green Racing on June 13, 2014, 01:04:19 AM
The tap that I mentioned that I was told came from the CR250 was only a single feed, as it would be if fitted to a single cylinder motor. I was told that that type of tap was used on the factory bikes, your guess is as good as mine.
Has anyone got any pics of the tap as fitted to the Daytona bikes ?

Sam. ;)

Sam
Go back to page 1 and have a look at the pics in reply No.12. About half way through ye shall find a pic of a replica CR750 fuel tap.
Toodle pip
Eric
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Offline H2Eric

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Re: A CR750 Build
« Reply #112 on: November 20, 2015, 05:05:57 AM »
Having some difficulty in posting to this thread. Update and pics to follow
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Offline H2Eric

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Re: A CR750 Build
« Reply #113 on: November 20, 2015, 05:28:27 AM »
Aha, we appear to be back in business.
Well dear reader progress over the last 18 months has been rather slow as I've been waiting for parts or waiting for others to do jobs for me, but I'll not bore you to death with those details. The machining of the magnesium fork sliders is still to be completed, but at least the gun drilling has been done to accept the fork legs. The front fender was no easy item to make either due to the tight clearances.
The major leap forward has been the painting of the bike by Terry Chambers of Race Paint UK, spiffing chap! I've also procured another fuel tank from Asa Moyce in Northern Ireland to which I will be fitting that holy grail of CR750 parts a proper works style fuel cap. As of this morning the seat is in the hands of the upholstery dept. and when that is returned to me it will be time to see if the bike will start. Have your ear plugs ready.

Cheers for now
Eric
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Offline H2Eric

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Re: A CR750 Build
« Reply #114 on: November 20, 2015, 05:37:37 AM »
The fuel cap
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Offline Sam Green Racing

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Re: A CR750 Build
« Reply #115 on: November 20, 2015, 07:06:30 AM »
Quote from: H2Eric on November 20, 2015, 05:05:57 AM
Having some difficulty in posting to this thread. Update and pics to follow

I was having a few problems myself Eric if you look at the date of your post in 2014, hahaha

Yes, the double feed tap can't have come from the Honda crosser unless the crosser had a carb with two feeds.  ;D ;D
Nice to see it progressing mate.

Sam. ;)
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Offline Kemp

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Re: A CR750 Build
« Reply #116 on: November 20, 2015, 07:18:08 AM »
Smashingly beautiful! I heard a CR750 run at Daytona AHRMA races many years ago, there is nothing that sounds like that bike as it screams around the banking. I'd always stop what I was working on just to watch and hear the beast snarling through the infield section and exit onto the banking. The bike was painted in the Honda CR750 graphics but white overall instead of the factory color. The bike came out of Holland and was very well ridden, but the sound, the sound was unforgettable!
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Offline MRieck

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Re: A CR750 Build
« Reply #117 on: November 20, 2015, 01:39:03 PM »
Quote from: H2Eric on November 20, 2015, 05:37:37 AM
The fuel cap
The real deal Eric. I remember speaking about finding one of those at Elvington the day I met you. ;)
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Offline sazaver

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Re: A CR750 Build
« Reply #118 on: November 20, 2015, 01:51:04 PM »
Loved the paint job. I recently had a chance to fire up my engine withe the same pipes its like a bear waking up from her winter sleep  ;) can't wait to see yours running!
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Offline H2Eric

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Re: A CR750 Build
« Reply #119 on: November 21, 2015, 07:02:48 AM »
The fuel cap was obtained from Paul McGhie, if anyone is interested in purchasing a similar one PM me and I'll give you the contact details. Be warned they are not cheap.

Eric
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Offline bwaller

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Re: A CR750 Build
« Reply #120 on: November 21, 2015, 08:43:41 AM »
It's a cool cap. I remember one of the first races with my new tank & Monza cap. In a hard braking zone my helmet must have flipped the cap open and the gas splashing all over surprised the hell out of me. That one looks like that shouldn't happen as easily.

Great bike Eric
« Last Edit: November 21, 2015, 02:35:35 PM by bwaller »
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Offline vfourfreak

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Re: A CR750 Build
« Reply #121 on: November 21, 2015, 10:38:53 AM »
Tidy.

Excellent.

Kev
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Offline H2Eric

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Re: A CR750 Build
« Reply #122 on: May 23, 2016, 11:40:53 AM »
More pics to follow.
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Offline H2Eric

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Re: A CR750 Build
« Reply #123 on: May 23, 2016, 11:45:35 AM »
More pics to follow
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Offline H2Eric

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Re: A CR750 Build
« Reply #124 on: May 23, 2016, 11:48:56 AM »
Still more pics to come
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