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Author Topic: Repairing rubber carb diaphragms  (Read 2522 times)

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Offline Tugboat

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Repairing rubber carb diaphragms
« on: February 06, 2014, 02:18:49 PM »
I might have to do this on the cheap soon. Several bikes use rubber diaphragms on their CV carbs, and they tend to develop holes & cracks over time. Is there a way to fix said holes & cracks using silicone or something?

Note: I'll technically only need 'em to work for 24 hours.
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Offline seanbarney41

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Re: Repairing rubber carb diaphragms
« Reply #1 on: February 06, 2014, 07:09:22 PM »
I tried it before using inner tube patch kit.  It worked for about 20 miles...guys claim to have done it before using Gorilla Glue.  I think there might be some good info over at HondaTwins.net.
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Offline MoMo

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Re: Repairing rubber carb diaphragms
« Reply #2 on: February 06, 2014, 07:40:29 PM »
no permanent fix that I've seen.  there was a Canadian supplier offering just the diaphragm for sale(for the cb350)...Larry
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Offline tbpmusic

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Re: Repairing rubber carb diaphragms
« Reply #3 on: February 07, 2014, 08:42:23 AM »
I've repaired minor cracks with a thin smear of silicon, but it won't last. And it changes the "response" of the diaphragm.

Sirius (I think) sells replacement diaphragms - reports indicate the installation can be a pain, but that they work ok..........
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Offline MoMo

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Re: Repairing rubber carb diaphragms
« Reply #4 on: February 07, 2014, 04:58:04 PM »
Quote from: tbpmusic on February 07, 2014, 08:42:23 AM
I've repaired minor cracks with a thin smear of silicon, but it won't last. And it changes the "response" of the diaphragm.

Sirius (I think) sells replacement diaphragms - reports indicate the installation can be a pain, but that they work ok..........



That is the place!  siriusconic from Canada ...Larry
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Offline bert96

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Re: Repairing rubber carb diaphragms
« Reply #5 on: February 08, 2014, 11:19:45 AM »
Check JBM Industries,they make really good diaphragms.

Bert

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Offline 750cafe

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Re: Repairing rubber carb diaphragms
« Reply #6 on: February 09, 2014, 10:06:35 AM »
Ditto to bert!
New ones Made in the U.S.A. and at reasonable prices too!

Eric
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Offline MoMo

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Re: Repairing rubber carb diaphragms
« Reply #7 on: February 09, 2014, 10:39:47 AM »
thx for the info on rubber diaphragms guys....Larry
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Offline Killer Canary

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Re: Repairing rubber carb diaphragms
« Reply #8 on: February 09, 2014, 10:52:53 AM »
Quote from: 750cafe on February 09, 2014, 10:06:35 AM
Ditto to bert!
New ones Made in the U.S.A. and at reasonable prices too!

Eric
And made in the U.S.A. even! They've got to be the best then ::)
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Offline 750cafe

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Re: Repairing rubber carb diaphragms
« Reply #9 on: February 09, 2014, 11:54:55 AM »
By a Canadian if it makes you feel any better.  ::)

Eric
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Offline Killer Canary

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Re: Repairing rubber carb diaphragms
« Reply #10 on: February 09, 2014, 01:16:43 PM »
Where might I by myself a Canadian then?
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Offline MoMo

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Re: Repairing rubber carb diaphragms
« Reply #11 on: February 09, 2014, 01:55:57 PM »
Quote from: Killer Canary on February 09, 2014, 01:16:43 PM
Where might I by myself a Canadian then?


go to any border crossing,  there are plenty of Canadians for sale there ::)                     






   sirius is a Canadian distributor...Larry
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Offline Killer Canary

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Re: Repairing rubber carb diaphragms
« Reply #12 on: February 09, 2014, 02:21:24 PM »
Used or new? Are they covered under COOL? ;D ;D ;D
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Offline Jerry Rxman Griffin aka MuthaF'er

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Re: Repairing rubber carb diaphragms
« Reply #13 on: February 09, 2014, 02:30:37 PM »
I think they are pretty well used  ;) You Canadian guys are beasts.....

Just don't try to UPS them either as customs is a PITA.
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Offline MoMo

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Re: Repairing rubber carb diaphragms
« Reply #14 on: February 09, 2014, 02:42:15 PM »
Quote from: Jerry Rxman Griffin aka MuthaF'er on February 09, 2014, 02:30:37 PM
I think they are pretty well used  ;) You Canadian guys are beasts.....

Just don't try to UPS them either as customs is a PITA.



Customs??????????????   I spent over two hours at a border crossing back in the 70s trying to get back into the USA in Smoot, Montana.  The guards could not believe we didn't have any drugs so the tore apart everything we had, had it strewn all over the tables then told us it was alright to go.  I was not a happy camper....Larry
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Offline Killer Canary

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Re: Repairing rubber carb diaphragms
« Reply #15 on: February 09, 2014, 03:08:53 PM »
I had the same experience trying to cross at Regway. I'd checked the bike's oil level before leaving Wakaw that morning and made the mistake of keeping the paper towel that I'd wiped the stick on in my pocket. 5 hours later the U.S.border guards searched me and found it. For that heinous crime I was detained for 2 hours, hands hovering near holsters most of the time.
Nobody is better than everyone else. Nobody.
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If it's worth doing at all it's worth over-doing.
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Offline MoMo

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Re: Repairing rubber carb diaphragms
« Reply #16 on: February 09, 2014, 03:19:25 PM »
Quote from: Killer Canary on February 09, 2014, 03:08:53 PM
I had the same experience trying to cross at Regway. I'd checked the bike's oil level before leaving Wakaw that morning and made the mistake of keeping the paper towel that I'd wiped the stick on in my pocket. 5 hours later the U.S.border guards searched me and found it. For that heinous crime I was detained for 2 hours, hands hovering near holsters most of the time.
Nobody is better than everyone else. Nobody.



The paper towel with oil on it was a bomb or maybe a torch?   I forgot to mention that we were the only car stopped during the two hour period, but the guards did stop a stake body truck loaded with huge canisters labelled bull semen.  They did pull the guy over and open one to make sure it really was bull semen inside.  So Canadians sell bull semen to the US?...Larry
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