Interesting afternoon - SV650.org

_Stretchie_ · 01-02-11, 02:36 PM

Well it was to me anyway. This afternoon I R been mostly cleaning carbs.

GruntyGiggles' ninja is going up for sale real soon so I am going to give it a service, change the fork oil and clean the carbs for the new owner.

Anyway, got the carbs off and doing them one by one to clean them and the jets/pilot needles and so on and I found that on each chamber, the person before me has managed to trap the edges of every single diaphragm.

So been ringing around to try and get some and find out that there are £23.50 +VAT EACH... EACH..

Oh my life, so that's over £100 for a full set.

Now, the bike had obviously been working fine with them like this, I'm sure many of you saw the bike flying passed on the AR as Grunty was a marker but I just couldn't put them back together as above with a clear conscience, they have been stressed and stretched in those areas, you can see it when you try to pull it straight, and they won't go back in to the correct shape.

Oh well, it needs doing now but £23.50+VAT EACH. What are they lined with magnesium or something?????

SoulKiss · 01-02-11, 02:40 PM

Caveat Emptor would have saved you £100

01-02-11, 02:55 PM

a certain organ mentioned to me that by placing rubber in a sock and boiling it up in a pan it generally reforms to its manufactured shape... might be worth a shot if it saves you £100

01-02-11, 03:00 PM

Quote:

Originally Posted by Owenski

a certain organ mentioned to me that by placing rubber in a sock and boiling it up in a pan it generally reforms to its manufactured shape... might be worth a shot if it saves you £100

recycling condoms again?

01-02-11, 03:02 PM

Quote:

Originally Posted by tom-k6

recycling condoms again?

hence the expected child

01-02-11, 04:12 PM

Having worked in plastics, what owenski said is true, a lot of plastic moulded parts will 'remember' their shape.
Problem you might get is boiling water probably won't get them warm enough, a lot of PP and PVC stuff start to go pliable at around 104 degrees, so salt in the water will help you get the temp towards that figure.

The diaphragms will defo go back to their original shape if heated gently and there not creased or anything.

Personally I would get a heat gun on a low setting and heat them up away from the carbs obviously.
Keep the gun moving, not too close and not in one place and it will be fine.

yorkie_chris · 01-02-11, 06:36 PM

If it's running alright, just put them back as they are. You'll know about it if they're leaking, and the rubber is flexible enough that if they're working they're unlikely to split in use.

Trick owenski describes can work on stretched and mullered brake seals.

01-02-11, 06:43 PM

I are sad that Chez is selling the bike

squirrel_hunter · 01-02-11, 07:07 PM

I told you not to open them up...

_Stretchie_ · 01-02-11, 07:09 PM

Cheers guys but I shelled out for the new ones, where the crease is on each, if you pull it and try to straighten it out they are very creased and not too happy about using them again.

Will give the heat a go now though just to see what it does.

01-02-11, 02:36 PM	#1
_Stretchie_ Large Member Mega Poster Join Date: Jan 2006 Location: Minsterworth, Gloucester Posts: 2,353	Interesting afternoon Well it was to me anyway. This afternoon I R been mostly cleaning carbs. GruntyGiggles' ninja is going up for sale real soon so I am going to give it a service, change the fork oil and clean the carbs for the new owner. Anyway, got the carbs off and doing them one by one to clean them and the jets/pilot needles and so on and I found that on each chamber, the person before me has managed to trap the edges of every single diaphragm. So been ringing around to try and get some and find out that there are £23.50 +VAT EACH... EACH.. Oh my life, so that's over £100 for a full set. Now, the bike had obviously been working fine with them like this, I'm sure many of you saw the bike flying passed on the AR as Grunty was a marker but I just couldn't put them back together as above with a clear conscience, they have been stressed and stretched in those areas, you can see it when you try to pull it straight, and they won't go back in to the correct shape. Oh well, it needs doing now but £23.50+VAT EACH. What are they lined with magnesium or something????? __________________ How to amuze an idiot: Look right-> <-Look Left

01-02-11, 02:40 PM	#2
SoulKiss Member Mega Poster Join Date: Jul 2006 Location: Sunny Croydonia Posts: 6,124	Re: Interesting afternoon Caveat Emptor would have saved you £100 __________________ Sent from my PC NOT using any Tapatalk type rubbish!! █╬╬╬╬(•)i¯i▀▀▀▀▀█Ξ███████████████████████████████)

01-02-11, 02:55 PM	#3
Owenski Guest Posts: n/a	Re: Interesting afternoon a certain organ mentioned to me that by placing rubber in a sock and boiling it up in a pan it generally reforms to its manufactured shape... might be worth a shot if it saves you £100

01-02-11, 04:12 PM	#6
Specialone Guest Posts: n/a	Re: Interesting afternoon Having worked in plastics, what owenski said is true, a lot of plastic moulded parts will 'remember' their shape. Problem you might get is boiling water probably won't get them warm enough, a lot of PP and PVC stuff start to go pliable at around 104 degrees, so salt in the water will help you get the temp towards that figure. The diaphragms will defo go back to their original shape if heated gently and there not creased or anything. Personally I would get a heat gun on a low setting and heat them up away from the carbs obviously. Keep the gun moving, not too close and not in one place and it will be fine. Last edited by Specialone; 01-02-11 at 04:13 PM.

01-02-11, 06:36 PM	#7
yorkie_chris Noisy Git Mega Poster Join Date: Apr 2007 Location: Halifax/Leeds Posts: 26,645	Re: Interesting afternoon If it's running alright, just put them back as they are. You'll know about it if they're leaking, and the rubber is flexible enough that if they're working they're unlikely to split in use. Trick owenski describes can work on stretched and mullered brake seals. __________________ Currently Ex Biker Now rebuilding a 63' fishing trawler as a dive boat

01-02-11, 06:43 PM	#8
Milky Bar Kid Guest Posts: n/a	Re: Interesting afternoon I are sad that Chez is selling the bike

01-02-11, 07:07 PM	#9
squirrel_hunter Member Mega Poster Join Date: Apr 2005 Location: Sunny Swindon Posts: 3,579	Re: Interesting afternoon I told you not to open them up... __________________ "A little enthusiastic?" May I add here, GG is awesome and I think I am in love with Stretchie...he rocks my world! SH2 \| 2MA \| GROM \| YSR

01-02-11, 07:09 PM	#10
_Stretchie_ Large Member Mega Poster Join Date: Jan 2006 Location: Minsterworth, Gloucester Posts: 2,353	Re: Interesting afternoon Cheers guys but I shelled out for the new ones, where the crease is on each, if you pull it and try to straighten it out they are very creased and not too happy about using them again. Will give the heat a go now though just to see what it does. __________________ How to amuze an idiot: Look right-> <-Look Left

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