Author Topic: CR 750 for road use build  (Read 13493 times)

Offline captaink

  • Old racers never die. ' they just go faster '
  • SOHC Expert
  • Posts: 266
    • View Profile
Re: CR 750 for road use build
« Reply #30 on: March 07, 2017, 10:12:35 PM »
Dummy engine has been installed
CR750 Replica
Norton Manx's 1947 & 1956
Norton CS1 1930
Norton International  1934
Norton 16H 1924
Norton Model 18 1929
Norton Commando / Colorado Norton Works
Triumph 1947 GP Replica
Triumph Bonniville 1967
BSA Goldstar Daytona 1956
Harley Duo Glide 1961
The Rickman project
And the CR dick Mann replica project
Sold a few of the Bikes so only got these left
Gt40...Car I know
E type fhc 1964... Car I know


" Greedy I Know

Offline captaink

  • Old racers never die. ' they just go faster '
  • SOHC Expert
  • Posts: 266
    • View Profile
Re: CR 750 for road use build
« Reply #31 on: March 07, 2017, 10:13:47 PM »
More pictures although they may not be in the correct sequence
CR750 Replica
Norton Manx's 1947 & 1956
Norton CS1 1930
Norton International  1934
Norton 16H 1924
Norton Model 18 1929
Norton Commando / Colorado Norton Works
Triumph 1947 GP Replica
Triumph Bonniville 1967
BSA Goldstar Daytona 1956
Harley Duo Glide 1961
The Rickman project
And the CR dick Mann replica project
Sold a few of the Bikes so only got these left
Gt40...Car I know
E type fhc 1964... Car I know


" Greedy I Know

Offline CR21

  • SOHC Member
  • Posts: 162
    • View Profile
Re: CR 750 for road use build
« Reply #32 on: March 08, 2017, 09:42:20 AM »
Progress is looking great  ;D Keep the posts coming!

Cheers,
CR21

Offline captaink

  • Old racers never die. ' they just go faster '
  • SOHC Expert
  • Posts: 266
    • View Profile
Re: CR 750 for road use build
« Reply #33 on: March 26, 2017, 05:35:37 PM »
Acquired a 1977 rear hub and brake assy.
Stripped, part polished and rebuilt with all new bearings, shoes and seals.
Only problem I had was a dodgy bearing retainer that had to have heat, wd40 an brute force to remove. The David Silver replacement was troublesome as well in that the old retainer had a small taper at the start of the thread and the new one never which was impossible to start on the carrier internal thread. For now the old retainer is back in and Ill have to talk to Silvers.
Nevertheless no big deal its 40 years old.
The trial fitting to the frame was OK so very soon the hub will go of to Hagons for a new wheel and spokes ( current waiting 6 weeks i'm told )
CR750 Replica
Norton Manx's 1947 & 1956
Norton CS1 1930
Norton International  1934
Norton 16H 1924
Norton Model 18 1929
Norton Commando / Colorado Norton Works
Triumph 1947 GP Replica
Triumph Bonniville 1967
BSA Goldstar Daytona 1956
Harley Duo Glide 1961
The Rickman project
And the CR dick Mann replica project
Sold a few of the Bikes so only got these left
Gt40...Car I know
E type fhc 1964... Car I know


" Greedy I Know

Offline captaink

  • Old racers never die. ' they just go faster '
  • SOHC Expert
  • Posts: 266
    • View Profile
Re: CR 750 for road use build
« Reply #34 on: March 26, 2017, 05:38:43 PM »
Rebearing of the sprocket carrier and all new brake parts

Rear wheel spindle spacers are in good order but I will make 2 new ones in stainless steel
« Last Edit: March 26, 2017, 05:54:07 PM by captaink »
CR750 Replica
Norton Manx's 1947 & 1956
Norton CS1 1930
Norton International  1934
Norton 16H 1924
Norton Model 18 1929
Norton Commando / Colorado Norton Works
Triumph 1947 GP Replica
Triumph Bonniville 1967
BSA Goldstar Daytona 1956
Harley Duo Glide 1961
The Rickman project
And the CR dick Mann replica project
Sold a few of the Bikes so only got these left
Gt40...Car I know
E type fhc 1964... Car I know


" Greedy I Know

Offline captaink

  • Old racers never die. ' they just go faster '
  • SOHC Expert
  • Posts: 266
    • View Profile
Re: CR 750 for road use build
« Reply #35 on: March 26, 2017, 05:40:40 PM »
I'll need to make an ally brake cable mount and weld this to the brake plate.
Original brake rod will now be a cable.
There were wear marks on the hub left by the spokes, even though the wheel was 17" and now will be 18" the new spoke should cover the marks.
To machine the drum down on the lathe could be done but may weaken it so I'm leaving be.
« Last Edit: March 26, 2017, 05:43:36 PM by captaink »
CR750 Replica
Norton Manx's 1947 & 1956
Norton CS1 1930
Norton International  1934
Norton 16H 1924
Norton Model 18 1929
Norton Commando / Colorado Norton Works
Triumph 1947 GP Replica
Triumph Bonniville 1967
BSA Goldstar Daytona 1956
Harley Duo Glide 1961
The Rickman project
And the CR dick Mann replica project
Sold a few of the Bikes so only got these left
Gt40...Car I know
E type fhc 1964... Car I know


" Greedy I Know

Offline captaink

  • Old racers never die. ' they just go faster '
  • SOHC Expert
  • Posts: 266
    • View Profile
Re: CR 750 for road use build
« Reply #36 on: March 26, 2017, 05:48:30 PM »
Trial fitting of the hub assy
Clip on and brake master trial fitting
CR750 Replica
Norton Manx's 1947 & 1956
Norton CS1 1930
Norton International  1934
Norton 16H 1924
Norton Model 18 1929
Norton Commando / Colorado Norton Works
Triumph 1947 GP Replica
Triumph Bonniville 1967
BSA Goldstar Daytona 1956
Harley Duo Glide 1961
The Rickman project
And the CR dick Mann replica project
Sold a few of the Bikes so only got these left
Gt40...Car I know
E type fhc 1964... Car I know


" Greedy I Know

Offline captaink

  • Old racers never die. ' they just go faster '
  • SOHC Expert
  • Posts: 266
    • View Profile
Re: CR 750 for road use build
« Reply #37 on: March 26, 2017, 06:02:06 PM »
I'm looking for a 4 -4 exhaust system in mild steel available in the UK ?
I know Cycle X do them and this may end up being the answer in the end.

They also do an oil filter combo to replace the existing oil filter housing with a spin on filter, any UK suppliers or anyone using or used one before ?

any assistance appreciated.

Suzuki performance parts do a CB750 4-2 full system but not sure at present what the quality is like. I need one for my Rickman CR750
CR750 Replica
Norton Manx's 1947 & 1956
Norton CS1 1930
Norton International  1934
Norton 16H 1924
Norton Model 18 1929
Norton Commando / Colorado Norton Works
Triumph 1947 GP Replica
Triumph Bonniville 1967
BSA Goldstar Daytona 1956
Harley Duo Glide 1961
The Rickman project
And the CR dick Mann replica project
Sold a few of the Bikes so only got these left
Gt40...Car I know
E type fhc 1964... Car I know


" Greedy I Know

Offline captaink

  • Old racers never die. ' they just go faster '
  • SOHC Expert
  • Posts: 266
    • View Profile
Re: CR 750 for road use build
« Reply #38 on: March 26, 2017, 06:38:12 PM »
The engine I have acquired for the CR replica is a 1977 and progress so far is that it has been striped, cleaned and inspected.
The cases appear to be in very good condition except the oil filter thread in the lower case, its ok but not perfect so its going to have to have an insert fitted.
The crankshaft and bearing match up has been a real eye opener and taxed my small brain but I think I'm there now.
Crankshaft micrometer readings, bearing colours seem ok now.
Head has gone to D & M Engineering for new guides to be fitted, new valves and springs.
Cylinder has already been bored to 836cc with a Wiseco big bore kit, cam polished.
I removed the original cylinder studs quite easily and replaced with APE studs and new APE crankcase mains studs.
 
CR750 Replica
Norton Manx's 1947 & 1956
Norton CS1 1930
Norton International  1934
Norton 16H 1924
Norton Model 18 1929
Norton Commando / Colorado Norton Works
Triumph 1947 GP Replica
Triumph Bonniville 1967
BSA Goldstar Daytona 1956
Harley Duo Glide 1961
The Rickman project
And the CR dick Mann replica project
Sold a few of the Bikes so only got these left
Gt40...Car I know
E type fhc 1964... Car I know


" Greedy I Know

Offline captaink

  • Old racers never die. ' they just go faster '
  • SOHC Expert
  • Posts: 266
    • View Profile
Re: CR 750 for road use build
« Reply #39 on: March 26, 2017, 06:40:51 PM »
few more, everyone likes a picture  ;)

Old studs removed with a blow lamp, WD40 and two 8mm nuts, some needed a little help with the mole grips as well.
New ones back in with a small thread dipping in wd40 and torque up using two 8mm nuts.

« Last Edit: March 26, 2017, 06:47:18 PM by captaink »
CR750 Replica
Norton Manx's 1947 & 1956
Norton CS1 1930
Norton International  1934
Norton 16H 1924
Norton Model 18 1929
Norton Commando / Colorado Norton Works
Triumph 1947 GP Replica
Triumph Bonniville 1967
BSA Goldstar Daytona 1956
Harley Duo Glide 1961
The Rickman project
And the CR dick Mann replica project
Sold a few of the Bikes so only got these left
Gt40...Car I know
E type fhc 1964... Car I know


" Greedy I Know

Offline CR21

  • SOHC Member
  • Posts: 162
    • View Profile
Re: CR 750 for road use build
« Reply #40 on: March 27, 2017, 08:57:14 PM »
Great post! Check out Lordmoonpie exhaust pipes!

Cheers,
CR21

Offline philward

  • SOHC Jedi
  • Posts: 2795
    • View Profile
Re: CR 750 for road use build
« Reply #41 on: March 27, 2017, 10:04:32 PM »
Heres the link - http://www.moonpie.co.uk/html/cr750_resource_page.html
The next stage of my build is making my set fit - they are not bolt on. You will need (like me) to fabricate baffles as they are straight through and will struggle to pass an MOT! DB killers may do but will only knock a few decibels off.
Phil
Current Bikes:-
Honda CB750K2 (1975)
Honda CB500K2 (12/1972)
Honda CR750 Replica (1972)
Honda CB350K0 (1969)
Kawasaki ZZR1100D3 (1995)
Kawasaki ZZR250 (1990) Project (Going on eBay ASAP)

Offline captaink

  • Old racers never die. ' they just go faster '
  • SOHC Expert
  • Posts: 266
    • View Profile
Re: CR 750 for road use build
« Reply #42 on: March 28, 2017, 06:20:14 PM »
Been having a few issues in my head with the crankcase numbers/ crankshaft numbers / bearing colours / journal sizes  but seem to have got there in the end although for some reason or not the oil clearances are higher than the manuals say   :-[
My engine man doing the rebores etc says not.....confused dot.com.  :o

anyway now I'm looking at journals and oil clearances that are at least consistent but I need Black shells to achieve this and I believe there within the limits
Plastigauge confirms the following clearance
Main bearings between 0.038mm - 0.040mm  :D
Rod bearings 3 @ 0.040mm and 1 @ 0.043mm  :D
« Last Edit: March 28, 2017, 06:23:03 PM by captaink »
CR750 Replica
Norton Manx's 1947 & 1956
Norton CS1 1930
Norton International  1934
Norton 16H 1924
Norton Model 18 1929
Norton Commando / Colorado Norton Works
Triumph 1947 GP Replica
Triumph Bonniville 1967
BSA Goldstar Daytona 1956
Harley Duo Glide 1961
The Rickman project
And the CR dick Mann replica project
Sold a few of the Bikes so only got these left
Gt40...Car I know
E type fhc 1964... Car I know


" Greedy I Know

Offline captaink

  • Old racers never die. ' they just go faster '
  • SOHC Expert
  • Posts: 266
    • View Profile
Re: CR 750 for road use build
« Reply #43 on: March 28, 2017, 06:28:52 PM »
No disrespect but what is the quality like of the moonpie exhausts, are the bends consistent and nicely done.
I'm a fussy git, perhaps too fussy.
Has anyone fitted a set and what is there honest opinion.
CR750 Replica
Norton Manx's 1947 & 1956
Norton CS1 1930
Norton International  1934
Norton 16H 1924
Norton Model 18 1929
Norton Commando / Colorado Norton Works
Triumph 1947 GP Replica
Triumph Bonniville 1967
BSA Goldstar Daytona 1956
Harley Duo Glide 1961
The Rickman project
And the CR dick Mann replica project
Sold a few of the Bikes so only got these left
Gt40...Car I know
E type fhc 1964... Car I know


" Greedy I Know

Offline SteveD CB500K0

  • Administrator
  • SOHC Jedi
  • Posts: 4442
  • Ride on the Steel Breeze...
    • View Profile
    • Steve's Blog
Re: CR 750 for road use build
« Reply #44 on: March 28, 2017, 07:25:00 PM »
Simon Tappin (LordMoonPie) is a member her http://www.sohc.co.uk/index.php?action=profile;u=313

He hasn't been online for over three years, but I'm sure he'd appreciate a call

Steve
2022 Tiger Sport 660
1971 CB500K0

 

SimplePortal 2.3.5 © 2008-2012, SimplePortal