Post by: El__burro on October 15, 2015, 05:10:26 PM
I have removed it and just kept the cones that look like velocity stacks.
Today I have covered them with a t shirt cutting and at times i felt like it improved the idling.
I don't want to reinstall the old filter box but I am not sure if this solution could work somehow.
Shall I opt for velocity stack or a set of these spongy filters?
Thanks
El__burro
(http://images.tapatalk-cdn.com/15/10/15/736c36755f6634a53f2ca49197f2b67e.jpg)
Post by: haynes66 on October 15, 2015, 08:01:49 PM
Post by: mike the bike on October 15, 2015, 08:58:22 PM
Post by: Spitfire on October 16, 2015, 08:49:37 AM
Cheers
Dennis
Post by: El__burro on October 16, 2015, 10:01:42 AM
Thanks
El__burro
Post by: Bryanj on October 16, 2015, 10:02:45 AM
Post by: El__burro on October 16, 2015, 10:04:36 AM
Post by: Johnwebley on October 16, 2015, 10:33:42 AM
I would experiment with tights,
maybe one or two layers,
not the thick woolly ones !!!!
see this link
http://www.speedwaybikes.com/handbook/sh_ch10.htm
Post by: Bryanj on October 16, 2015, 11:59:01 AM
Post by: El__burro on October 16, 2015, 01:58:59 PM
that is a nice read.
Panty hose or nylon stocking is the way to go..
over the filter I mean.
Actually the screw that is all tight, is the throttle stop (according to the diagram) the one in copper visible in the picture.
I need to find the air mix screw and work out different settings.(http://images.tapatalk-cdn.com/15/10/16/d260d7c80fc4a5f97770e8a5a967eddd.jpg)
thanks
el__burro
Post by: Spitfire on October 16, 2015, 03:28:01 PM
(http://i192.photobucket.com/albums/z244/DennisMcc/air%20screws_zpshrlr7xp1.jpg)
(http://i192.photobucket.com/albums/z244/DennisMcc/settings%20for%20cb750%20carbs_zpsffdshsrc.jpg)
Cheers
Dennis
Post by: El__burro on October 16, 2015, 04:37:27 PM
actually the problem of poor idling is caused by fuel and not filter or air starvation.
when I feed the 2 sets of carbs individually it roars like a lion.
Probably there is a blockage in the connections between the carbs caused by the "rubbish" i found in the tank.
Is there an easy fix that doesn't require carbs removal?
Thanks
el__burro
Post by: El__burro on October 19, 2015, 03:05:52 PM
My question is, how do I feed all the carbs at once.
I have one fuel pipe feeding 1-2 and the other 3-4
how this works exactly
thanks
el__burro
Post by: Spitfire on October 19, 2015, 04:59:48 PM
(http://i192.photobucket.com/albums/z244/DennisMcc/carbs/carbsafter-2GALL-9.jpg)
Cheers
Dennis
Post by: El__burro on October 19, 2015, 09:01:26 PM
maybe I need to connect each fuel pipe to both carbs.
correct?
Post by: Bryanj on October 20, 2015, 07:39:52 AM
Post by: El__burro on October 20, 2015, 08:32:38 AM
Thanks
El__burro
Post by: hairygit on October 20, 2015, 09:04:34 AM
Sent from my D2303 using Tapatalk
Post by: El__burro on October 20, 2015, 09:12:44 AM
Thanks
Post by: hairygit on October 20, 2015, 09:29:37 AM
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Post by: El__burro on October 22, 2015, 01:56:34 PM
Oil level. (for which I started a new post)
Thanks
El__burro
Post by: El__burro on November 12, 2015, 01:59:37 PM
I've notice that the cup gasket has a tiny cut in it; although it has not split yet it does not serve its purpose.
I have an over spillage of fuel once the cup is full
I need to buy a new washer/gasket.
Can I use one for plumbing purposes or it has some particular properties or shape?
Thanks
el__burro (http://images.tapatalk-cdn.com/15/11/12/ba6a533cbbe16c3f3973a360fed3f2ec.jpg)
Post by: Chris400F on November 12, 2015, 03:38:15 PM
I think the seal is just an O-ring but you need to make sure it is suitable for use with fuel, which 'standard' plumbing ones may not be.
I have a box of assorted O-rings which say they are suitable for use with fuel oils and petrol.
The inner thread diameter of the bowl of a spare tap I have is approx. 23mm, and I have found an O-ring that fits that.
The ones I have might be a bit thicker than the original but I think they should do the job.
If you PM me your address I'll send you one of these O-rings so you can try it.
If your thread diameter is different then let me know and I'll see if I have a suitable size
Post by: Chris400F on November 12, 2015, 04:47:36 PM
Post by: El__burro on November 13, 2015, 02:33:35 PM
Unfortunately it's too small.
The inner diameter of the cup is approximately 26mm.
Shame i didn't measure it before you sent it.
I owe you one.
Thanks
El__burro
(http://images.tapatalk-cdn.com/15/11/13/e41c0a45451a66d04e78e1ca2a32144a.jpg)
(http://images.tapatalk-cdn.com/15/11/13/60680cd5beb8294770a3800cb72814a3.jpg)
Post by: Chris400F on November 13, 2015, 03:31:56 PM
I have larger ones but they are a larger cross section than the one I sent so I think would be too thick.
I think any O-ring of a suitable material would do the job - it needs to fit inside the threaded portion where the bowl screws in so slightly larger than 26mm outside diameter.
Pity you didn't go for the bowl I came across and gave you the link for that came complete with a new seal, but that's the benefit of hindsight!.
Post by: El__burro on November 23, 2015, 04:51:03 PM
I went down to my diy store (b&q) and I found a set of 6 plumbing O ring washer 3 different sizes two each @ £1.38
Fitted on the cup i am not sure if they are fuel resistant but since I fitted it I have no leak.
hopefully Ive managed to save at least a fiver.
Regards
el__burro(http://images.tapatalk-cdn.com/15/11/23/c8219ce960cced7ce49389c34621b86a.jpg)
Post by: hairygit on November 23, 2015, 05:12:35 PM
Sent from my X5 using Tapatalk
Post by: Chris400F on December 18, 2015, 08:55:46 AM
Post by: El__burro on December 18, 2015, 12:46:28 PM