1975 CB750 P2 Police Bike

[Oddjob]

Just sell it James, let someone else have the problem. 

[sye]

It isn't really a problem though. It would be easy enough to get waterproof covers for use on the road so they can't be seen.

[Moorey]

 Personally I would ride it as it is and take my chances. It would take some special type of twat to give you a ticket, but they are out
 there.

[royhall]

There are no shortages of special type of t**t around my way. They will book you for anything.


Sent from my Pixel 6 using Tapatalk

[JamesH]

Evening all.

Progress on the Police bike has been sporadic and slow, whilst I’m waiting for a few bits to come together..you guessed it, the bloody paintwork. Why is it ALWAYS the sodding paintwork that holds up these projects .

Anyway, have got the front end finished now, and carbs fitted and we have a running bike. She settles down into a nice smooth, quiet tickover - so I’m bloody chuffed.

The headlight ‘nacelle’ was a bit of a challenge to get a headlight rim to fit smoothly, but managed to get there in the end.

I’ve also wired up the patrol lights to a flasher unit I found in the US - yes, they’ll be disconnected for road use but if I ever show the bike it’s a nice little ‘show trick’.

I’ve also been at the 3D design/printing to mock-up the missing bracket that guides the siren cables to the rear drive bracket/roller. It’s amazing what you can conjure up from a couple of photos from the internet . Had to redesign the first effort and ‘thicken’ it slightly; second time lucky.

Have been in touch with Venhill who have agreed to manufacture a clutch cable in grey to my specification - the one I bought from CMSNL two years ago was about 16” too short..def a spec savers job there lol..

So will be a quiet couple of weeks whilst I wait for the paintwork to get sorted, then I can button this one up and go out for a spin / get arrested by the local plod for ‘flashing’ :-).

https://youtu.be/Wnc-98Yj0Ww

https://youtu.be/6xgZzLJt-yo

https://youtu.be/RsENI8Vr11U

[Laverdaroo]

Simply incredible James, well done mate. That is by far one of the coolest 750's I've ever seen. And thats without it's clothes on, cant wait to see it with the tank etc!

Top work mate, stunner.

[Nurse Julie]

It will forever be know to me as the Brighton Flasher 😂😂😂

[JamesH]

Simply incredible James, well done mate. That is by far one of the coolest 750's I've ever seen. And thats without it's clothes on, cant wait to see it with the tank etc!

Top work mate, stunner.

Many thanks mate - really appreciate it.

It will forever be know to me as the Brighton Flasher 😂😂😂

I have no idea what you're implying Julie :-)

[Jan B]

Just landed here tonight and read the whole thread in one go. Absolutely amazing shed you have And a really nice bike.

You really nail this restoration!!

[JamesH]

Just landed here tonight and read the whole thread in one go. Absolutely amazing shed you have And a really nice bike.

You really nail this restoration!!

Many thanks Jan - much appreciated.

[JamesH]

So the bike is pretty much finished - just awaiting finalisation of the tank and side cover. I have the unenviable task of fitting the decals later this week before the tank is clear coated by the painter.

Anyway, airbox is now fitted, carbs synchronised and she runs really nicely.

Have finished the siren installation; the proof of concept 3D printed roller drive bracket was a great guide for my local welder who modified the 500/4 bracket to match my design.

Correct length clutch cable sourced and fitted.

Revised design for the 3D printed siren cable clip fitted - I’ll need to make a final design change to this but it’ll do the job for now.

I also managed to source a ‘low profile’ blue patrol light to match the red unit I had with the ‘clear’ lens. So I’ll fit these reflectors to the bike tomorrow at some point.

Also fitted and aligned the NOS seat and very please with how she’s looking. The paintwork will be the icing on the cake once ready.

[Laverda Dave]

Nearly there James, start up day very soon.
Please post a video of the completed bike if you can with the siren engaged and the lights flashing, it will be the icing on the cake for something so rare and I have never seen anything like this before.

[royhall]

I'm looking forward to hearing that siren.

Sent from my Pixel 6 using Tapatalk

[Johnny4428]

That’s a very fascinating restoration, cracking job! Looking forward to hearing of its first “Patrol”

[Lobo]

Amazing work - lovely.

‘Concerned’ 😂 at the RPM at 80mph of the siren drive cable. On the assumption of no spindle gearbox at the rear-wheel off-take, and using a wheel diameter of 56cm and the spindle dia @ 4cm….. I reckon the cable would be spinning at 17000RPM.

Imagine that coming loose flailing about your right knee and ankle …. or worse snaking towards the family jewels as you pursue Jonny Burglar 😱.

By contrast, at 80mph the speedo cable is spinning @ 3500RPM, and the Rev Counter cable abouts 2400RPM.

Maybe don’t try it James … certainly keep the cable well lubed!

Happy to stand corrected… I hope I’m wrong!