Honda-SOHC

MarkB on SOHC.net and SOOC ( great person has wonderfully detailed resto threads on 750 K0 & sandcasts) asked me to share some wiring material  links etc with them on the sandcast site so I have copied the details here for anyone who needs anything. I do have a fair supply of some of the sleeving  materials detailed below (NOT SOFTENER OR TIN PLATING STUFF) and I don't mind giving the odd bit or two away but I ask that members have a few postings under their belt before asking.. there are a few lurkers out there and we need regular contributions from everyone as it enriches our knowledge base on here, in my view.
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ashimotok0
Full Member
***
Posts: 182

Re: The Wire Harness Thread - Everything About Repairing, Restoring & Replicating
« Reply #1 on: Today at 10:33:56 AM »


I need a little time to get my facts together Mark but I will look into cleaning up the old connectors in Ultarasonic  cleaner, softening the old PVC covers etc.etc.

Vintage Connections are anyone's first port of call because they stock the correct bullets, multi-block Hitachi non-latching connectors, crimp tool, silver-grey sleeving for the starter solenoid etc. Nice family concern to deal with .. but high import duty for us in the UK.

http://www.vintageconnections.com/

I seem to remember my K0 main loom was made by Sumitomo. ( each coloured wire is marked with Sumitomo 1969 ..cool ! )

Here are my sources of other stuff:

Tinning solution ( not tried this as I have old stuff that's great but NLA but it should work if the surface is cleaned and degreased) . This is used to replate bullets/receptacles/components etc.

http://www.ebay.co.uk/itm/like/221674394658?limghlpsr=true&hlpv=2&ops=true&viphx=1&hlpht=true&lpid=108&chn=ps&device=c&adtype=pla&crdt=0&ff3=1&ff11=ICEP3.0.0-L&ff12=67&ff13=80&ff14=108&ff19=0

10mm glass woven/ silicone impregnated sleeving

http://uk.farnell.com/hellermann-tyton/gss10/sleeving-helaglass-10mm-25m/dp/1674275

Range for other sizes :

http://uk.farnell.com/webapp/wcs/stores/servlet/Search?catalogId=15001&langId=44&storeId=10151&categoryId=700000006007&st=glass%20sleeving%2010mm%20silicone&pageSize=25&showResults=true&pf=110381913


Glossy black sleeving: (Vintage Connections for small quantities or silver-grey version)

http://uk.farnell.com/webapp/wcs/stores/servlet/Search?catalogId=15001&langId=44&storeId=10151&categoryId=700000006007&st=alpha%20sleeving%20black&pageSize=25&showResults=true&pf=110009806,110149521,110381910,110381911

I used clear heatshrink and grey heatshrink for the ends on the alternator sub-harness and the points sub harnesses respectively. The grey is also used on the oil pressure switch cable plus woven glass sleeving.

Vintage connections sell the non-adhesive, black PVC loom tape or it's freely available on eBay.

NEED TO FIND : The thin walled nitrile rubber sleeving for the alternator sub-loom and the HT leads covering. It's around 1mm wall thickness. I do have a lead on it though. Plus the 18AWG glass/silicone woven single cable, in the correct colours, for the alternator coils (high temperature as used in cookers). The same wire is also used on CB350K/CB250K twin, points loom but I think the 750K0 used high temp. PVC yellow and Blue, which  have a source of from' Alpha wire' in the US

RUBBER SOFTENER: Needs to be immersed for a long time (overnight) at 70 degrees C and I think it will only work on Nitrile rubber not PU (Polyurethane). I had an original '69 46k mile  inlet rubber and airbox 'rubber' from my 10/69 K0 analysed and the result was that the inlet was Nitrile & the airbox was PU. This softener definitely does work, I will post pictures of before and after and the part was treated in 2011 and still soft and elastic but it needs long immersion at highish temperature ( I use an old 'slow cooker' to heat the softener in a glass dish  water bath .. if you get an invite for dinner at my house .. then gracefully refrain Grin)

http://www.greatlakes.com/Industries_We_Serve/Building_and_Construction/Other_Building_Materials/Reofos_50


TRY NEWARK IF NO FARNELL STOCKIST  IN YOUR REGION for sleeving etc.

MARK PLEASE PLEASE DON'T BUY ANY OF THIS I WILL SORT YOU OUT ENOUGH FOR A COUPLE OF BIKES AND POST IT FOR FREE TO YOU>>> I OWE YOU ONE !

I will do some more investigations  on the fused clear covers and post back. I am sure I can 'crack' it.

Cheers ... Ash

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REGARDING CLEAR PLASTIC FUSED COVERS ON HONDA BULLET CONNECTORS.

"Mark I remember a post where a member replaced the insulators on his harness. He sealed them to the harness by using one of his wife's or daughters old hair flat irons I believe it was. Through trial and error he carved the shape he needed into the flat iron heating pads to make the correct looking crimp. (Melt) I'll keep looking for the post".


"It was ashimotok0 and he did make it from his daughters hair iron."

REPLY B ME:-
Yes it was me and I did make the fusing tool from a pair of my daughter's old hair straighteners. The problem was finding the unplasticized plastic clear sleeve. I did find some at a works Chrismas party used for inflating those squeeky ballon thingy's. I went round after the meal collecting everyones unused ones. They are probably unplasticised for safety reasons.

I need to revisit this because I fell ill after that original  post and chickened out and used the Vintage Connections sleeves (see attached) but you have rekindled my enthusiasm Mark for my CB350K1 / Cb250K0 wiring loom restorations.

I also used the tinning solution for re-tinning the old connectors and plating the bare brass ones from VC, the type of solution you use for making prototype printed circuit boards (PCB's).

Always sung the praises of eBay Germany on here. Bought two items recently via eBay Germany a DID rim from Sayonara Cycles and CB250SS(K0) seat from Jap2wheels. The rim I knew had tyre lever gouges in it but there is a dink in the outer face of the rim,  that the chromer is worried about and the seat base is so rusty that if I sandblast it, its only use will be for draining my boiled spuds in.  Also the S/steel trim isn't good, I already knew the cover and foam would be shot, which they are. These items were EXPENSIVE and the rim guy wouldn't budge on the price. I emailed Frank at Jap2wheels and he has offered a refund via eBay (he's normaly spot on on description and quality) but I did a deal on the rim off eBay in the end from Sayonara cycles. Anyone dealt with Werner at Sayonara cycles?

This resto lark is a minefield ... I'm off down the pub!

Ash

In 2011 I bought loads of heavy stuff from the States , 750 gearboxes, K0 front wheel with tyre and disc still  attached and never got stung for customs or VAT. But then I bought some K1 oil hoses and paid almost double because of import charges plus payment to Parcelforce for handling. Anyway typical eBay, he guaranteed me they were from a K1 but one hose is longer than the early bikes (aka K7/F2). Anyone know if a hydraulic hose company could re-crimp a ferrule on it  if I shortened the longer one. They are really nice condition  hoses though, so I would to use them on my K0 build if I can.

Sadly you always seem to get stung for customs charges nowadays as they have clamped down on it.

Ash

Where the hell do you get new nuts BZP 12mm hex head /M8 coarse thread, as used on Honda's, (13 mm hex head you can get a bucket load for for next to nothing).

I am getting all of my fasteners together to re-plate for 3 bikes but no way am I faffing about re-plating individual nuts.

Here is my survey of what's available:-

DSS --66p each
 inc. VAT

http://www.davidsilverspares.co.uk/parts/by-part-number/partnumber_94002080000S/

CMSNL       0.50 Euro plus everything else

http://www.cmsnl.com/search/partnumber.php?spbpbrand=&spbppartnumberHOpart=&spbppartnumberHOmodel=&spbppartnumberHOext=&spbppartnumberSUpart=&spbppartnumberSUmodel=&spbppartnumberSUext=&spbppartnumberYAmodel=&spbppartnumberYApart=&spbppartnumberYAext=&spbppartnumber=94002080000S&spbpmodelcode=

Yamiya ... 0.29 euro plus ever thing else     (that's not too bad I suppose --- wonder how much from Saisei ...will ask)

http://www.yamiya750.com/index.php?main_page=product_info&cPath=158_159&products_id=1849


Or is there a source from a fastener supplier? I asked Graham (Trigger) and he can't find em either.

BTW if you order a single nut from CMS it comes out at 17 Euros including shipping etc !

Ash

Well I got my Tax SA filed at 11.55PM last night, so time to relax a bit now and get on with the bikes.

Sh*tty weather outside, so spend the last hour with a cuppa reading this brilliant thread from Hondaman on the USA site on the rebuild of his CB750 engine, with lots of factory history.

http://forums.sohc4.net/index.php?topic=122379.75

In it, a guy confirmed my thoughts on chemicals to pre-etch aluminium to get paint to adhere. gonna get me some chromic acid (I know it's nasty stuff BTW before someone chips in but I have access to a lab fume cupboard). 

'Orcadian' Do you remember what they used at BA in Brough, when you worked there?


"Chromic as you probably know has sulfuric acid and a dichromate salt.
It's the recommended thing for aluminium being prepped for paint (organic). In the aircraft industry we usually refer to it by the trade name "Alodine". Such as Alodine 1201. (Gives the aluminium a yellow color btw)"

Ash

22 quid minimum if you include postage for this pile of sh*te

http://www.ebay.co.uk/itm/Honda-CB-350-K4-Job-lot-1-/381140951159?pt=UK_Motorcycle_Parts_13&hash=item58bdc56077

Ash

Anyone used Vesrah brake shoes. Just bought two pairs NOS very cheap for my twins.

Ash