Honda-SOHC

Had a slight mishap on my trip to see Yozzer Halfway there heard a clattering sound from below.
Pulled up to find centre stand was hanging off.
On Inspection when I got home Keith Jnr noticed that the pivot bolt has a hole in the end of the bar for a retaining pin.

Opps - my fault didn't see hole on rebuild 

(Centre stands are very awkward to transport on a bike without a backpack)

New pin fitted - Problem solved 
Mental note to me - Wear glasses when working on bike

Cheers

Keith Snr

From my memory of my 78 F1 the mirrors had a recess around the rear same as this Tanaka mirror which was on the bike.

I ordered an original replacement from DS which is different with no recess on the back plate

(Library Pictures)

Tanaka



DS original



Am I wrong in thinking the Tanaka was original to the bike both are same size 4.5" etc just differing backplates

Cheers

Keith Snr

Project 2  (1978 F1) has issues with the head so we are looking for a replacement top end.


I have seen an F2 head on eBay in UK and think it would be a straight exchange?


Any advice please

Cheers

Keith Snr

When removing my seat to recover it I had problems with the bolts/studs that retain the metal band from tail pice to seat.
They were rusted and broke so I would need new to refit.

I tried to source some with no joy as the studs/Bolts seem unique to the bike.
The metal strip has a hole and track the bolts/studs fit into the hole and slide through the track to where they fit onto seat base and cowl.

After pondering for a while I decided to make my own as the only ones I found were used and bent etc

A normal 6" Nail is the same head size and flat so it will slide in the track with no problem
I bought a pack for £4.00 from B&Q and ground the bolt to size for about 1" close to the head and cut off the excess
Once ground to approximate size I used a tap and dye set to thread the ground bar and put a nut and washer on each
(if you don't have a tap and dye set they are fairly cheap and a handy tool)
I will cut excess thread off during fitting

Problem solved for £4.00

Hope this helps others out who have the same issue

Chers

Keith Snr

Front new master seals fitted with new braided hoses and pads
No joy the piston is seized all the way home in the recess

Tried to move it with an air line stuck solid
Present line of thought is to soak in rust release and try airline again
Failing that I would presume attacking the piston to remove and replace

Are the 400/4 front callipers the same size?

Not tried back ones yet,but expecting the same

Any tips appreciated

Cheers

Keith Snr

We have 2 CB 750 F1's as projects to work on.

 I am working old school methods so sure more modern methods are available but prefer to do it my own way
My son has a 1977 which is in parts a previous abandoned project bought as spares not been touched for 25 years. The engine was in the frame as a rolling bike ,with a few boxes of parts and accesories.

We started the rebuild and found we need several key parts ignition - battery - etc sourced these and cleaned rebuild carbs rewired bike as an initial try .
We had the engine running fine ,but stacks more to do.

With 1 bike in progress I saw an unmolested F1 on ebay which also had been of road for 25 years. Bought the bike and brought it home plenty to do but an ideal model for the first project.
Within 2 hours of getting bike we had the engine fired up and running smooth.

The second project was now also running as the lead project with the bike being nearly complete

Removed all the broken trims started to address the front brakes.
Bought new master seal kit braided hoses and new pads
Freed piston  Rebuild in Progress

Sourced an original exhaust in fair condition - Fitted and looking good - Old one fitted to project 1
The wheels look like what i had originally on my old bike sure they were called Lesters?
either way they needed further attention.

The front wheel has been hand stripped fine polished and repainted in black with polished rims Pics to follow.

The Headgear /Headlamp and all painted fittings were degreased,cleaned polished and referred back to original standard.
New indicators fitted and working fine
Front mudguard cleaned de rusted - treated - polished - few dings  but will do for now Refitted and looks fair

Tank de rusted dried out and awaiting tank sealant to be applied better safe than sorry.

I will try to add pic as we progress with both projects.

here are pics from ebay advert

















Presently need new l/h switch unit as the horn pass button is missing and has a oversize screw fitted unless anyone has an old one I could use for parts