Other Stuff > Misc / Open
I suspect Ken is right about the quality of Gerben work look at my 500 carbs!
McCabe-Thiele (Ted):
Today I had a look at my 500 carbs that Bryan had sent to Gerben a while back. I had noticed that the chrome on the main throttle shaft spindle was rusted in a few areas when I removed them from the bike - I put some pasivator on the rust & generally covered the links in WD 40 for dry storage in my heated office. I put the rusted chrome down to outdoor storage.
So I had a look at them more closely - I noticed that the cable quadrant looked wonky. Closer inspection revealed that out of the six rivets that hold the two halves together only two look to have been peened in place. Two on one side & none on the other.
I was hoping to just check the bowls for old fuel and use them without dismantling them. Plan B again......
.500 carbs 1 by Macabe Thiele, on Flickr
.500 carbs 2 by Macabe Thiele, on Flickr
Skoti:
Did you notice the mangled phillips screw head next to the idle adjustment knob?
Would have probably cost about 15 pence to renew.
If that was Gerben then failure to have changed that screw IMHO sows doubt on the general quality of the work done.
I see the fuel hose is not genuine Honda either, so good luck with that regarding ethanol proof.
Anyhow, I hope all goes well for you.
regards
Skoti
Oddjob:
I wasn't saying Gerbens work was rubbish Ted, just that it's not as good as most people make out, they are so surprised at how good they look when they come back they don't look closely.
On carbs the attention should be in the details, the zinc plating isn't very good on those, I've seen butterflies really distorted and out of line with the cables, however the riveting isn't down to Gerben, if it's bad that down to Honda. Looking at the linkage bar it looks to me to have not been removed as the retaining pin doesn't look to have been drilled out BUT I could be wrong as he's done that and fitted another, I use screw in ones, if he done that he's used a plain rivet which IMO isn't a great idea. If he didn't remove the pin he's clearly just tidied up the linkage bar and not done a great job of that either. I had 3 of mine hard chromed, it's not cheap to have done these days, about £65 or so IIRC. However that does fix the problem permanently.
Looks like you need to have the cable clamp straightened and also check the butterfly isn't bent as well.
I did these for another member earlier this year. I opted for bright zinc plating with blue passivate rather than gold. Roo did the plating as my kit wasn't set up.
I even polished up the brass in the float bowls, might as well do a good job whilst you're in there :)
The Honda piping isn't ethanol resistant Skoti, it might be now but the older stuff isn't. Common practice is to replace with Viton Orings inside and Nitrile fuel pipe which is ethanol resistant. Like this I used.
McCabe-Thiele (Ted):
The fuel pipe might have been fitted by Bryan I don't know - its marked as Gates Auto Master 32256 carb universkrat 6 mm.
As I will need to remove the shaft to sort out the rivets I might be minded to dismantle them completely anyway.
Some rusting on carb bowl screws as well where plating has failed.
I did not use the word rubish Ken - just not the quality I expected generally - carb tops & bottoms still have some shine to them.
When you say butterfly do you mean the cable quadrant section?
I've never dismantled that shaft so not sure what the retaining pin you refer to is or where to get a screw in type?
Skoti:
--- Quote from: Oddjob on September 17, 2023, 01:50:23 PM ---I wasn't saying Gerbens work was rubbish Ted, just that it's not as good as most people make out, they are so surprised at how good they look when they come back they don't look closely.
On carbs the attention should be in the details, the zinc plating isn't very good on those, I've seen butterflies really distorted and out of line with the cables, however the riveting isn't down to Gerben, if it's bad that down to Honda. Looking at the linkage bar it looks to me to have not been removed as the retaining pin doesn't look to have been drilled out BUT I could be wrong as he's done that and fitted another, I use screw in ones, if he done that he's used a plain rivet which IMO isn't a great idea. If he didn't remove the pin he's clearly just tidied up the linkage bar and not done a great job of that either. I had 3 of mine hard chromed, it's not cheap to have done these days, about £65 or so IIRC. However that does fix the problem permanently.
Looks like you need to have the cable clamp straightened and also check the butterfly isn't bent as well.
I did these for another member earlier this year. I opted for bright zinc plating with blue passivate rather than gold. Roo did the plating as my kit wasn't set up.
I even polished up the brass in the float bowls, might as well do a good job whilst you're in there :)
The Honda piping isn't ethanol resistant Skoti, it might be now but the older stuff isn't. Common practice is to replace with Viton Orings inside and Nitrile fuel pipe which is ethanol resistant. Like this I used.
--- End quote ---
Your work looks top notch compared with Gerben.
Incidentally the genuine Honda fuel hose from DS also comes in the correct 5.5mm I.D. which prevents stretching onto the carb 'T' piece.
https://www.davidsilverspares.co.uk/tubes
Can't see anything about the new Honda hoses actually being ethanol proof, but last weekend I clocked 30k on my old F1 (now showing 55k in total) and the genuine Honda hoses are still fine.
My Honda lawn tractor is almost 20 years old and fitted with the same genuine hoses, that's where I got the idea from.
Previous aftermarket hoses I'd tried lasted a couple of years and then snapped like dry twigs, maybe I was unlucky.
But at 22 quid a metre the genuine stuff is not cheap.
You often get what you pay for.
Cheers
Skoti
P.S.
just noticed you use the correct 'made in Japan' green and black handled Vessel screwdrivers, no mangled screw heads with your work!
Navigation
[0] Message Index
[#] Next page
Go to full version