Honda-SOHC
SOHC.co.uk Forums => CB350/400 => Topic started by: McCabe-Thiele (Ted) on September 08, 2020, 08:57:37 PM
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In the first picture is my dismantled Petcock the second is after 5 hours in a plastic takeaway container of Evaporust about 5mm depth of fluid. I've only put the thin plate in to clean at present.
I did lightly brush the surface after 3 hours to try to speed up the cleaning.
Naturally it can't fix the loss of the surface coating but it's pretty impressive.
(https://live.staticflickr.com/65535/50289933136_b46d63ec49_o.jpg) (https://flic.kr/p/2jBX43G)Petrol Tap (https://flic.kr/p/2jBX43G) by Macabe Thiele (https://www.flickr.com/photos/187487200@N03/), on Flickr
(https://live.staticflickr.com/65535/50320351313_3feee4dbef_o.jpg) (https://flic.kr/p/2jECXj2)5 hours in Evaporust (https://flic.kr/p/2jECXj2) by Macabe Thiele (https://www.flickr.com/photos/187487200@N03/), on Flickr
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Impressive! Good plan to (at least) try restoration of the petcock - always sad to unnecessarily consign old stuff to the bin - as I keep telling the daughter 😂.
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You have to plate them as, it will go rusty straight away.
[attachimg=1]
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I have a zinc plating kit (had it 10 years and only changed solution once - just bought another as the recent finish is getting dull) - I zinc as I strip and refurb so its not a big job and everything is ready for reassembly when required.
I've had good results and zinc on bike I built 10 years ago (ZZR) still looks good
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Zinc plating kit that sound cool - I'll have to research it do you have a sellers link ?
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I used these guys for a plating kit as there support came well recommend. Preparation is the key and a controllable power supply as you need to be able to apply 100 mAmps per square inch of surface. Plating in winter can be a problem as getting and keeping everything to temperature is a bigger challenge as you will need good ventilation as well.
Oppps, forgot to add https://www.gaterosplating.co.uk
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Macabethiele, just something I found after putting in new rubbers etc, the tap was very stiff to turn against the spring washer, even with some lube, and I put in a little ‘Weldtite TF2 white lithium grease 40gm tube’ that I use on my cycle and now it’s remained very smooth.
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Thanks for the two tips Greg & Jeremy.
Cheers Ted
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I purchased a basic kit from same company and had reasonable results, difficult indeed to maintain liquid temp. I was wondering about a propagation mat, some are thermostatically controlled. Or just set up in nice warm kitchen!😂😂😂
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I ended up with everything in water baths and added boiling water to get the desired temperature.
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I use aquarium heaters in mine with insulated buckets to get the temperatures correct.
I have hade some great results with the basic kit bought through Classic Plating.
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Zinc plating kit that sound cool - I'll have to research it do you have a sellers link ?
Sorry, just seen post - same company as already suggested - https://www.gaterosplating.co.uk/index.php?route=product/product&product_id=231
I also use an aquarium heaters and themometer to sort correct temp - to be honest, its only in the winter I bother with them as in the summer, its 'near enough'
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Zinc plating kit that sound cool - I'll have to research it do you have a sellers link ?
Sorry, just seen post - same company as already suggested - https://www.gaterosplating.co.uk/index.php?route=product/product&product_id=231
I also use an aquarium heaters and themometer to sort correct temp - to be honest, its only in the winter I bother with them as in the summer, its 'near enough'
Thanks for that Phil - as I keep tropical fish in my outside fishhouse/garage office annex the temperature will not be an issue.
Cheers Ted
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Spent most of yesterday zinc plating various gauge parts. The gauge bases take about 45 minutes at 1.25 volts.
Good advice on the tank heater, the plating solution needs to be 25-30 centigrade and putting a small bottle of hot water in the tank will help getting the temperature up as the tank heater can take a while to get it there. Bandaging the anodes is a help in stopping small particles of zinc getting into the solution and onto the item being plated. Filtering the solution when finished with it keeps it clean and two coffee filters in a funnel works well but takes a while to run though.
A power supply is essential although some seem to manage with one of those resistance wire arrangements.
Just as a bit of a trial I tried zinc plating a brass bezel. I didn't prep it very well just wanted to see if it would plate. Came up quite well and now I regret the prep wasn't better.
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I've only ever used the variable resistor thing that came with the kit and a battery charger - can anyone suggest a variable power source that would do the job?
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You will find a selection of variable power supplies here www.gaterosplating.co.uk you need one that has a fine voltage adjustment, a digital display and goes down to point 5 of a volt.
I bought one on fleabay. Ash is the best one who will know which is best although he probably made his own.
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My Evaporust is working really well the tank inside is looking almost brand new in many places but not everywhere yet.
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As I understand the process the ampage is the critical factor that drives the plating process, hence the 100 mAmps per square inch. The power box I borrowed allowed me to set ampage and the box adjusted the voltage, I often had nearly 0.5V showing so a measurement of the amp draw is essential.
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As I understand the process the ampage is the critical factor that drives the plating process, hence the 100 mAmps per square inch. The power box I borrowed allowed me to set ampage and the box adjusted the voltage, I often had nearly 0.5V showing so a measurement of the amp draw is essential.
I will take that onboard if I decide to try it - my BiL Dave has a kit of some sort but no solution yet.
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I did a lot of my own plating a few years ago with chemicals from Gateros plating who are quite cheap and very helpful. For instance, if you want half the amount they normally sell, they are flexibe and will do that. I even went to the extent of having a little motor driven spindle with slip rings to feed in the plating power to give more uniform plating. However, commercial plating is so cheap and top quality that I just send everything out now other than small bits I need in a hurry or are mega rare and I fear losing them (like CB92 parts !)
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Is it possible to rig up some kind of cheap and cheerful digital current controller if using a 12v battery charger as the power source?
It would have to be simple for those of us with minimal elecrickery skills or knowledge. 🙂
The simple filament wire controller included with the kit is very hit and miss.
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Is it possible to rig up some kind of cheap and cheerful digital current controller if using a 12v battery charger as the power source?
It would have to be simple for those of us with minimal elecrickery skills or knowledge. 🙂
The simple filament wire controller included with the kit is very hit and miss.
You can use an LM338 reguator in constant current limit mode...
https://i.stack.imgur.com/gFUuV.png
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Is it possible to rig up some kind of cheap and cheerful digital current controller if using a 12v battery charger as the power source?
It would have to be simple for those of us with minimal elecrickery skills or knowledge.
The simple filament wire controller included with the kit is very hit and miss.
You can use an LM338 reguator in constant current limit mode...
https://i.stack.imgur.com/gFUuV.png
Ash.
There aren’t many on here will have any idea what you are on about
Sent from my iPhone using Tapatalk
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Is it possible to rig up some kind of cheap and cheerful digital current controller if using a 12v battery charger as the power source?
It would have to be simple for those of us with minimal elecrickery skills or knowledge.
The simple filament wire controller included with the kit is very hit and miss.
You can use an LM338 reguator in constant current limit mode...
https://i.stack.imgur.com/gFUuV.png
Ash.
There aren’t many on here will have any idea what you are on about
Sent from my iPhone using Tapatalk
I think you are wrong there Steve ..Ian is an 'ull lad ;D and keen to learn... he's already made and used a version of the Ashimoto curing oven :) ;D Its only a three legged device and a resistor & capacitor after all. Ian you coud probably used the resistance wire you got with your basic kit as a variable resistor (R1 in circuit) and I can get you an LM338 no probs for free. Needs a decent heatsink though.
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All I can say Ash - is 'eh!'
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All I can say Ash - is 'eh!'
Sent from my moto g(7) power using Tapatalk
[attachimg=1]
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Apologies for Hijacking your thread Ted.
Ash
The circuit appears to be a constant current control circuit irrespective of input voltage.
If I want to make this a variable current controller is it simply a matter of installing a potentiometer in the output side of the circuit as a variable resistor?
Cheers Ian
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Apologies for Hijacking your thread Ted.
Ash
The circuit appears to be a constant current control circuit irrespective of input voltage.
If I want to make this a variable current controller is it simply a matter of installing a potentiometer in the output side of the circuit as a variable resistor?
Cheers Ian
Yea just make R1 variable .. you need constant current for plating preferably.. .sorry for thread hijack from me too.
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How about a “Do your own zinc plating” thread?
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How about a “Do your own zinc plating” thread?
Sent from my iPhone using Tapatalk
Pete did a decent post
http://www.sohc.co.uk/index.php/topic,4908.msg22945.html#msg22945
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These are what I used yonks ago but must admit I just prep everything and take it to Allenchrome these days. I actualy used a lab bench supply in constant current mode but this was for Trigger I believe and used the LM338 regulator I suggested Ian use.
[attachimg=1]
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Ash
I’ll message you about the controller.
Ian
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SteveD
"There aren’t many on here will have any idea what you are on about"
Ash
I’ll message you about the controller.
Ian
Steve ... never under estimate the thirst for knowledge of your readership ;D ;D ;D Particularly if they come from East Yorkshire ;D ;D
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I took one look at Ash's setup and immediately thought, send my stuff to the platers!
:D :D
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I took one look at Ash's setup and immediately thought, send my stuff to the platers!
:D :D
I don't tend to use it much now just for small items ...I send 99.5% to Allenchrome now.
However, a lot of people like to have a go themselves ...like Oggie400F ...I loaned my kit & chemicals to another bloke in Hull a few years back and he zinc plated everything on his CB750K2 with it and the bike was featured in Classic Bike magazine bikes of the year.
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I took one look at Ash's setup and immediately thought, send my stuff to the platers!
:D :D
Once you set the kit up (as it comes from from Gateros for example) - and if you have the space to keep it set up, its dead easy to get decent results. Ash's set up looks scary if you haven't used the kit (and don't understand the art of electrickery).
I refurb things as I strip them off the bike - say top and bottom yokes (paint, re-zinc, replace bolts, etc) so that when I put everything back together, everything is done - so for me, it works a treat.
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I took one look at Ash's setup and immediately thought, send my stuff to the platers!
:D :D
Once you set the kit up (as it comes from from Gateros for example) - and if you have the space to keep it set up, its dead easy to get decent results. Ash's set up looks scary if you haven't used the kit (and don't understand the art of electrickery).
I refurb things as I strip them off the bike - say top and bottom yokes (paint, re-zinc, replace bolts, etc) so that when I put everything back together, everything is done - so for me, it works a treat.
Fed up of this ;D ;D ;D The actual constant current circuit bit is mega simplz ..The rig pictured was also a speed controller for the stirrer etc which isn't essential.
I will put together a 'how to build' in Anoraks Corner without any soldering involved....just to prove my point.
BTW I designed the electronics for Caswell Europes semi-pro multi tank system and I evaluated this supply below attached from Gateros. Gateros kits are normally great but this power unit was absolute sh8te build quality inside and I would be wary of its electrical safety. So my advice is DON'T buy.
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No offence meant Ash!