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Topics - AshimotoK0

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Anorak's Corner / CB160 Steering Damper Knob Restoration.

« on: September 06, 2024, 08:48:12 AM »

Well I got lumbered (only joking Jim

) with one of a good mate's problems again. He's restoring his 1965 CB160 but the steering damper knob top was only half there when he bought the bike and he didn't get the missing broken bit

Here in pictures is my 'restoration' of it.

The knob was originally made of hard black phenolic thermoset plastic. (like the body of old 13A plugs).
I decided to restore it with epoxy heavily filled with ultra-fine ceramic powder that sets rock hard. (the same RS 2-part epoxy I use for my coil refurbs).

The problem is the underside of the knob has convolutions that act, along with a springy clip thingy, as a detent mechanism, so I had to come up with a method of faithfully reproducing them.

I used hot melt adhesive run into the underside of the knob to make a mould part for the convolutions. I used a slight smear of silicone oil (same as I use in gauge dampers) as a release agent to stop the adhesive sticking to the damper knob plastic.

Here is the broken part with the hot-melt profile pictured next to it.

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Then the mould part fitted to the broken knob

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I drilled the knob and glued in 1mm pins to give reinforcement.

Then I used Blu-Tack to form the outside of the mould and filled with the ceramic filled epoxy compound

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The part with moulding bits removed and rough finishing before final fettling and paint.

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After fettling and painting...pleased with the result ! Paint needs knocking back a bit but I will leave that to Jim !

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Other Bikes / Can any Brit Bike Buffs ID this old tank for me

« on: August 26, 2024, 08:35:20 AM »

Possibly AJS ..dunno... got it with a load of old Honda parts.

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Anorak's Corner / DIY Spot-Weld Dent Puller ... a real Frankenstein/Igor contraption.

« on: August 24, 2024, 08:08:36 AM »

Made this to pull lots of dents out of a CB500 Four tank.

NO this is not the 500 tank you kindly passed onto me Trigger ...I will let you have that one back.

Plan is ludicrous really. I have a beautiful Candy Jet (Jade) Green K0 paint set done by Menno a couple of years back pre-#@%$. A perfect NOS Candy Custom Gold tank with a pair of decent panels. However, I want to have a go at candy painting and the K0 came in Starlight Gold not Candy Custom Gold. So that's going to be this one is going to be. Well, that's the plan. Then all of my painting escapades will be over and I will hang up my guns for a bit.

Made from two scrap microwave transformers, timer module off eBay and one of my customers heavy duty solenoid switches (they use my automated test system in Hampshire & Lithuania and have sent me lots of samples over the years to set up the testing of their product range.) I had to use two transformers in series connection in the end as one transformer didn't provide enough welly to geta decent weld.

Video here:-

https://www.youtube.com/shorts/mPaUYmkHL-8

CB350/400 / Interesting 400F Carb post by Hondaman on USA site

« on: August 15, 2024, 06:56:26 AM »

Wonder what everyone reckons on this carb post from 'Hondaman' on our sister USA site.

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SOHC Singles & Twins / Anyone got a CB250RSA I need tank pinstripe details .HELP !

« on: August 11, 2024, 07:51:48 PM »

A couple of months back a guy on Facebook kindly sent me some pics of tank centre section dimensions of my 1980 CB250RSA project.

I am at the point of painting the section in dark blue but I am unsure of the exact positioning on the lower section of the tank. From the Facebook pics of the upper section, I am fairly sure that my masking is OK in the upper section but can anyone give me an indication of the widths A -> F on my annotated picture of the lower section.The dark blue tape roughly represents the white pinstripe decal I will be using. It's a case of "do it once, do it properly". The 'Nassau Blue' base-coat has gone on pretty well, so I don't want to cock it up on the dark blue centre section.

I am painting this bike myself as the low resale values of these gems simply doesn't warrant a 400 to 500 quid paint job. Piki, provided the thin whiter pinstripe itself in vinyl.

The guy on Facebook give me some more dimensions but they don't seem to correspond with my annotated image.

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This is a pic of a NOS Red tank but the dark blue centre section/white pinstripe is exactly the same as the Nassau Blue tank.

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CB500/550 / My mate in York thinking of selling his 500K1 Sprint bike

« on: July 29, 2024, 11:17:28 AM »

My mate in York thinking of selling his 500K1 Sprint bike (he used to regularly sprint it at the IOM but he's got a Scott sprinter now, so he's not using it).

The donor bike was a USA import and it's done less than 4k miles I think. He put some kind of fancy ignition on it and I know the carbs are good 'cos I provided them (the originals had suffered from long term storage in the States.)

PM me if interested.

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This is at the Ramsey Sprint in 2017 (with a lot of the original parts still fitted) ... He's doesn't have the standard parts (he gave them to me tyears ago

)

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Recommended Sources for Parts and Services / Honda Paint 'Paints4U' in Grimsby

« on: July 29, 2024, 07:15:28 AM »

I noticed that Paints4U now list quite a few of our bike colours. Some of the descriptions are way off ...e.g Burnish Blue for 400/4 and not Varnish. Listed as 1970 !

I have only had 1K base-coat paint, that has been matched to a car code, from them before but their aerosols have really good paint delivery (better than RS Bikepaint) and much, much cheaper. The paint quality is good too. Plus, over a certain spend delivery is free.

They also do some Honda colours as 2k in a can that I have not tried. It looks like it's a ProXl make of aerosol which is a really good product. Personally I use Spraxmax 2K (German company) for 2K in-a-can clear-coat but friends have use ProXl 2K clear and reported it as being really good

https://www.paints4u.com/Customer/ProductsByCat/Index/5

https://www.paints4u.com/Customer/ProductDetails/Index/12003

The Black Bomber Board / Bomber Fastener Woes

« on: July 12, 2024, 09:41:22 PM »

My 1967 CB450K0 Black Bomber is the ultimate jigsaw puzzle in that it came basically in a load of storage boxes left in a Crawley back garden for God knows how long and everything was totally stripped down, including the engine.

The main post is about fasteners so skip the following waffle if you like, about the project in general.

I have gathered parts over the past 7 years for this bike, like NOS period DID rims, NOS Genuine Honda silencers, NOS seat, front guard etc. etc. so it will be a lovely example if I ever get it finished. I painted it myself last year and it came out pretty good and I had all of the chrome done a couple of years back and the speedo/tacho rebuilt by Peter Horton on here. I did have a NOS speedo but sold it to fund the rest of the project.

Fast forward to this week and I am now putting the engine together. I had about 4 cranks for this bike (very unique crank with 'plummer' type block main bearings .. totally different to the later 5-speed... more like a Honda race crank. I gave these to my mate Graham Curtis and he totally restored one and I gave him the remains. I was lucky in that I found newly rebored cylinder barrels and NOS pistons that had been matched to the rebore in a lock-up that the Crawley guy had rented (he was in his 80's and passed away and his son from London was selling the stuff off). Cams and followers are always mega hard to find for these and the exhaust cam always seems to pickup on one cam lobe. I found a a lovely inlet cam and a set of four really nice rockets/followers in all of the parts but all of the exhaust cams had a least one pit. During lock-down I sold some race type valves for a CB350K to Cappellini , who do parts for 1960's Hondas in Italy and he gave me decent money for them. I started a dialogue with him and gave him a Bomber rear brake pedal.... To my amazement, totally out of the blue, he posted me a pristine exhaust cam and some of his camchain tensioner sprocket repair kits and a magnetic sump plug that they sell . What a kind gesture !

Anyway, I am all set to finally put the engine together but I have discovered that the the nuts for the crank main bearing studs are not listed in any parts book and neither are the nuts for the crankcase halves retaining studs. I have researched this and found that the nuts are not standard ISO M6 and M8 nuts. The washers are not listed either but I am being told that the crank studs didn't have washers and the M6 crankcase ones are thinner than normal Honda ones (possibly Form 'C' is a match). From what I can glean the M6 nuts are standard 10mm A/F but are deeper than 'standard' ones . .i.e. just under 6mm rather than around 5mm as pictured below. I reckon the crank retainer nuts are probably deep M8's with 14mm A/F hex. I have found that deep M6 nuts and deep M8 nuts are used on classic Lambretta scooters .. so I am investigating as a possible source. I have also seen Honda nuts from the 1960's (fasteners not people

) having one side bevelled and the opposite side almost flat

Anyone on here restored a Bomber engine and have any recollection of this please?

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SOHC Singles & Twins / Not one for the purists ... thoughts on V5C

« on: July 09, 2024, 02:28:44 PM »

My mate 'Dodgy-Roger' built this from an ST70 rolling chassis with NOVA cert..... deffo not one for the purists and typical of his 'don't give a f*ck take on everything, bless him

It's fitted with a new 50cc,12v electric start, Lifan engine (he bought two Lifan 50cc motorbikes that NEVAL's in Hull brought in to evaluate from China ..one new and one with about 100 miles recorded .. Nevals were the shop in the 1970's who sold cheap Russian imported bikes.

The exhaust is genuine Honda standard ST70 NOS.

The frame number stamping is very clear and matches the NOVA certificate. But how about the fact it is highly modified and has an alternative Chinese engine. Will it have to be a 'Q' plate?

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**The Black Bomber Board / Bomber did OK At H&H today 400F's did Cr*p**

« on: July 03, 2024, 07:11:27 PM »

1966 Bomber did OK at H&H Auctions today, as made £7,000 plus Fees (I guess around 1K ) so buyer paid around £8k

The three 400/4's didn't do well at all IMHO.

https://www.handh.co.uk/auction/search/?au=539

Anorak's Corner / Chromed Carbs .. stripping the chrome off !

« on: June 29, 2024, 10:01:00 PM »

I took member jojotut's CB750K0 carbs to Prestige Plating to get them to strip all of the plating as a PO had chrome plated them and the mounting bar as well.

It was bit scary handing them over as I didn't quite know what state they would be in after reverse plating but pretty pleased with how they turned out for Steve. Sadly they had been triple plated and reverse plating doesn't remove the copper but I tried treating a carb body in the all important 'Keihin' logo area and managed to buff off the copper and get a decent finish. OK they will never regain their original iridescent sheen but most 50 odd year old carbs lost that years ago anyway.
A lot of work still to do though but with carb sets costing around 500 quid a pop .. well worth saving.

Loads of doom and gloom Facebook keyboard warriors predicted disaster but that'l show 'em.

Prestige reckons that whoever had them chromed must have spent an absolute fortune getting them done.

SOHC Singles & Twins / Bit of a rare CB250RS Deluxe

« on: June 17, 2024, 04:29:40 PM »

Don't think it's a scam ... but there again it is on Facebook !

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Misc / Open / Not bike related but great for vintage retro tech fans

« on: June 16, 2024, 02:53:22 PM »

Just binge watched these

https://uktvplay.co.uk/shows/retro-electro-workshop/watch-online

Humour / Is this relevant to anyone on here ?

« on: June 12, 2024, 10:41:06 PM »

Actually been to houses like this .. one in Bishop Auckland and one on Anglesey.

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Misc / Open / Bangers and cash restoring classics V50 Guzzi

« on: June 07, 2024, 11:00:59 AM »

Watched the programme on catch up which one projects was a Guzzi V50 military bike.and interesting that they visited Armours who made them repro silencers and a guy in the N.E. who straightened the rear alloy wheel.