Author Topic: 1975 CB750 P2 Police Bike  (Read 14257 times)

Offline JamesH

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1975 CB750 P2 Police Bike
« on: December 10, 2021, 12:42:41 AM »
So, now that the ‘68 CL450 has finally ‘had it’s turn’ I thought I’d start work on this ‘plod’ bike that I’ve had for a few years now.

This is an ex-Saudi CB750 P2 - and let’s just say it’s going to need a LOT of love and attention.

This is going to be a slow-burner over the winter months, especially given the amount of painting required..

Anyway, as they say a picture paints a thousand words, so those of a rust-averse disposition best look away now…










Offline McCabe-Thiele (Ted)

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Re: 1975 CB750 P2 Police Bike
« Reply #1 on: December 10, 2021, 06:01:15 AM »
Having owned just one white vehicle in my lifetime my experience has been that white  tends to magnify any corrosion rather than hide it.

Hopefully the bulk of it will be just surface cosmetic rust as per most of your pictures.
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Offline Bryanj

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Re: 1975 CB750 P2 Police Bike
« Reply #2 on: December 10, 2021, 06:37:25 AM »
At least you have the rare speedo mate!

Offline Spitfire

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Re: 1975 CB750 P2 Police Bike
« Reply #3 on: December 10, 2021, 10:14:45 AM »
Challenging, but I'm sure you will do your usual magic on it.

Cheers

Dennis
1976 CB750F

1977 CB750F2 In bits

1964 BSA A65R In bits

Offline MrDavo

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Re: 1975 CB750 P2 Police Bike
« Reply #4 on: December 10, 2021, 11:37:45 AM »


I think the police bikes look great. Because everything else is plain white, the engine and exhaust, the CB750s best features, really stand out, and that huge speedo is epic! The radio / doughnut box on the back looks handy.

I just read that Honda exited the police bike market quickly, after a LAPD cop, trying a disk brake for the first time, fell off, broke his elbow and sued Honda! As a teenager, my CB750 got pulled, late at night, by a couple of Norton Commando Interpols, but only because I slowed down to see who was trying to keep up. 

I've had a couple of old white cars, and can recommend white Duck tape for the rust patches that show through.  ;)
1969 Honda CL450 'Scrambler'
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Offline JamesH

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Re: 1975 CB750 P2 Police Bike
« Reply #5 on: December 10, 2021, 11:39:27 AM »


I think the police bikes look great. Because everything else is plain white, the engine and exhaust, the CB750s best features, really stand out, and that huge speedo is epic! The radio / doughnut box on the back looks handy.

I just read that Honda exited the police bike market quickly, after a LAPD cop, trying a disk brake for the first time, fell off, broke his elbow and sued Honda! As a teenager, my CB750 got pulled, late at night, by a couple of Norton Commando Interpols, but only because I slowed down to see who was trying to keep up. 

I've had a couple of old white cars, and can recommend white Duck tape for the rust patches that show through.  ;)
Lol - that’s it. I’m not going to bother painting the frame then - I’ll just get a few rolls of white duck tape and be fine with it…

‘Slowing down’ for the plod - that made ma laugh Dave


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Offline JamesH

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1975 CB750 P2 Police Bike
« Reply #6 on: December 10, 2021, 11:41:53 AM »
Well, the engine rebuild actually took place over the last few weeks (in advance of a build like this I always like to get the engine buttoned up an ready to just put back in when the rest is ready).

The oil pressure switch wire (with the horrible red crimped connector) is just there for testing - I have a new Honda wire and moulded rubber cover to fit..

Looking nice…

 

« Last Edit: December 10, 2021, 11:59:05 AM by JamesH »

Offline MrDavo

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Re: 1975 CB750 P2 Police Bike
« Reply #7 on: December 10, 2021, 12:31:38 PM »
I was about to whinge about that nasty red connector (hate them with a passion) when I saw your edit, James. I once spotted a CB750 bottom end for sale at Stafford, and managed to negotiate to just buy the rubber boot for the pressure switch, as I couldn't find one anywhere.

Regarding slowing down for plod, the one who caught me up first I actually knew, he'd been trying to join our bike club as he was a keen biker, but we eventually voted 'no' because not all our bikes (or cigarettes for that matter) were strictly legal (this was the 1970s). We had to wait a while for the other, slower, plod to join us, the one I knew actually apologised for the fact that he'd have to 'do' me, because his colleague had watched it all. The summons was suitably vague, 'exceeding the 30 limit' without mentioning the stupid speeds we'd actually been doing, what size bike I was on or the struggle to catch me up. I don't think that alcohol was ever mentioned at the time either, but I was on my way back from taking a lady home after a visit to licensed premises, enough said.

1969 Honda CL450 'Scrambler'
1974 Kawasaki Z1A
2005 Harley XL1200R Sportster
1985 Porsche 911 3.2 Carrera Sport
1978 VW Bay Window camper van

Offline McCabe-Thiele (Ted)

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Re: 1975 CB750 P2 Police Bike
« Reply #8 on: December 10, 2021, 12:51:49 PM »
That engine looks brilliant James will be interesting to see what you do with the frame colourwise - I like the white tbh - probably a genetic link to my past employment.

A slight tinge of Ivory will make the frame look even more solid.
Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html

Offline MrDavo

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Re: 1975 CB750 P2 Police Bike
« Reply #9 on: December 10, 2021, 02:08:42 PM »
I’m impressed that the kickstart shaft is replated  (or new), lazy ass here tends to just paint the ends with silver undercoat and clear laquer.

Attention to detail.
1969 Honda CL450 'Scrambler'
1974 Kawasaki Z1A
2005 Harley XL1200R Sportster
1985 Porsche 911 3.2 Carrera Sport
1978 VW Bay Window camper van

Offline Bryanj

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Re: 1975 CB750 P2 Police Bike
« Reply #10 on: December 10, 2021, 02:28:01 PM »
Talking speeding how about 2 plod BMW chasing a Z1000 for 7 miles and only catching up, outside county hq, because of traffic.
Severe bolocking as they said they were doing 90 and i was dissapearing into the distance but they made the mistake of telling me they didnt get my number at any time till i stoppef!
By the way the truncheon is in the LH panier as one of them had to use it to clout the leaking carb

Offline AshimotoK0

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Re: 1975 CB750 P2 Police Bike
« Reply #11 on: December 10, 2021, 04:14:40 PM »
Looking good James  :)

I stripped a couple of NOS Honda Police speedos recently.

There is a little solenoid inside, which when it gets a 12v  signal it throws a little pawl thingy into a fine toothed gear wheel. This locks the speedo needle at the desired speed ..presumably to show to the speeding motorist that he has exceeded the legal limit.
“Alright friends, you have seen the heavy groups, now you will see morning maniac music. Believe me, yeah. It’s a new dawn.” Grace Slick, Woodstock '69 .. In the year of the Sandcast.

Offline JamesH

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Re: 1975 CB750 P2 Police Bike
« Reply #12 on: December 10, 2021, 04:18:13 PM »
Back to the Police resto.

Managed to grab an hour at lunchtime to lay out the various parts I’ve been collecting over the years for this specific build. If you though K0 / Sandcast parts were difficult to fine NOS, think again. Think Unicorn bitcoins..

Anyway, enough of the shi* analogies (Dave’s way better / more entertaining at those).

Looking down, I realise there is a serious amount of £ on the floor in front of me - a scary amount in fact.



















Offline JamesH

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Re: 1975 CB750 P2 Police Bike
« Reply #13 on: December 10, 2021, 04:22:46 PM »
Looking good James  :)

I stripped a couple of NOS Honda Police speedos recently.

There is a little solenoid inside, which when it gets a 12v  signal it throws a little pawl thingy into a fine toothed gear wheel. This locks the speedo needle at the desired speed ..presumably to show to the speeding motorist that he has exceeded the legal limit.
Ash - you absolute legend. I was literally looking at a barely-legible wiring diagram earlier, trying to work out how the ‘meter stop switch’ is actuated / works… I’ll need to study the diagram in more detail when I strip / clean / repair the loom.


Offline andy120t

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Re: 1975 CB750 P2 Police Bike
« Reply #14 on: December 10, 2021, 04:44:57 PM »
A manually operated proof that you are speeding.  There is a whole world of error/ judgement/ corruption in there. I wonder if the speedo evidence was admissible in court?! Quite likely if it was the seventies..... admit it or I'll punch you ...I confess..
andy120t

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