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MC21 Air Solenoids


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Ivor2Stroke

 
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MC21 Air Solenoids

Thu Apr 09, 2020 12:41 pm » Post: #1 » Download Post

Hi i just bought a MC21 and some of the air solenoid pipework and connectors are missing,i just wondered where you can get the 3 way and 4 way connectors and pipe as they are discontinued from Honda,thanks Paul
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Andy
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Location: Devon, UK
1991 Honda NSR250 MC21
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Thu Apr 09, 2020 6:55 pm » Post: #2 » Download Post

I would be surprised if someone here doesn't have some spare parts kicking about. Lots and lots of broken bikes, and the X & Y-pieces are the same on every model of MC21, so no need to be specific. Try a post in Classifieds.

You may get lucky on eBay, but there are always parts on Yahoo!

MC21 air correction on Yahoo!

You will need a proxy bidding website or an agent for Yahoo! of course, but there's very little you can't get from Japan. Even brand new bodywork pops up sometimes. Just don't get addicted! Laughing
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Ivor2Stroke

 
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Sat Apr 11, 2020 3:57 pm » Post: #3 » Download Post

ok thanks
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mreebikes

 
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Air correction Cross piece and Y-piece for solenoids

Thu Apr 23, 2020 11:05 pm » Post: #4 » Download Post

Just stumbled across your post, I had the same problem as you 18 months ago when I was trying to get my MC21 going.
I managed to buy some solenoids on ebay but struggled to get the x piece. There were some for ridiculous money, so I made my own:
One leg of the X has a jet inside, from memory I think it is 0.65 mm but you need to double check. I already had a blank aluminum jet which I carefully drilled with a 0.6mm drill bit, I used a Dremel and a small drill chuck to hold the jet.
I got a plastic cross and tapped a thread into one of its legs, then screwed the home made jet into that leg.
I didn't need to make a Y-piece.

The X and Y pieces I purchased from Advanced Fluid Solutions:
NOR-KS-04 4mm nylon 4=way joiner (cross)
NOR-YS-04 4mm 3 way joiner (Y-piece)

Rubber hose from ebay. I got several different sizes, suitable for fuel, even though only air goes through these pipes.

And some 0.6mm, 0.7 and 0.8 drills from UKDrills.com (several of each in case of breakages)

I might have enough bits to make another X-piece.

Good luck
Regards, Ian
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