03-09-2015, 03:21 PM | #1 |
Join Date: Dec 2014
Location: Deerfield Beach FL
Posts: 1,410
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Motorcycle build. 'How Its Made' video.
Pretty cool video. Anyone know anything about these motors? Are they a copy of something?
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03-09-2015, 06:27 PM | #2 |
Join Date: Dec 2014
Location: Deerfield Beach FL
Posts: 1,410
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I was watching this video again. I like the engine design the way the head is so simple and bolts right on top of the cylinder no timing chain etc involved like on my Honda clone 125cc. But how come no valves or where are the valves?
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03-09-2015, 07:53 PM | #3 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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That's a Beta; they make terrific products.
That engine is a two-stroke, hence no conventional valves. There will be a reed valve ahead of the carb that allows the air/fuel/oil mixture into the combustion chamber.
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Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
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03-09-2015, 07:54 PM | #4 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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Listen to the bike in the video, and you'll hear a sound similar to angry bees. Distinct two-stroke sound.
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Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
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03-09-2015, 08:14 PM | #5 |
Join Date: Dec 2014
Location: Deerfield Beach FL
Posts: 1,410
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Thanks Weld, I have no experience with 2 stroke motors but now I want one.
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03-09-2015, 11:05 PM | #6 |
Join Date: Feb 2015
Location: TX - CA
Posts: 45
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Great little video!
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NST MIKE Black JL250P-2 |
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03-10-2015, 12:38 AM | #7 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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A two-stroke can be a fickle mistress. I've had a few, and I'm currently rebuilding a '79 Suzuki TS250. I'm installing two-stage Boyesen power reeds in it, so the power delivery is much smoother. In stock form, two-smokes tend to have little bottom end, and then come alive in a wicked way at about mid throttle.
They smoke and stink, which is awful and wonderful. You can slide a new piston and rings into one in minutes. They eat spark plugs and spit out fouled useless slugs.
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Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
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03-10-2015, 03:37 AM | #8 | |
Join Date: Jan 2012
Location: ChCh , NZ
Posts: 2,265
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Quote:
you need to ride a late model 2 stroke... still have the top end but the power delivery is now very linar compaired to the older piston port motors... Adjustable power valves so you can set the power delivery as you like it... I have owned.. well god knows 15 or more 2 strokes still have 2... 1977 Montesa cota 348 & 1980 Montesa H6 125 enduro... The demise of the 2 strokes was a sad day.... Ps... Wasn't the 79 TS250 a piston port motor... No reed block.. Yer got me head sratching now... better do the google thing... ..
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09 XT660R ... 06 TTR250 ... 80 Montesa H6 125 Enduro... 77 Montesa Cota 348 MRR "Malcom Rathnell Replica"... Current resto projects.. 81 Honda CT110... 80 Kawasaki KL250A1... 11 Husaburg TE125 enduro... "sold" along with another 31... Lifan 125 Pitbike.. "stolen" ... KIWI BIKER FORUM...... http://www.kiwibiker.co.nz/forums/content.php All the best offroad rides in NZ... http://www.remotemoto.com/ E-mail... xtpete1@gmail.com |
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03-10-2015, 04:46 AM | #9 |
Join Date: Jul 2008
Location: Idaho
Posts: 25,054
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That's a fun video. Thanks for posting the link.
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Spud "Never argue with an idiot. He will drag you down to his level, and beat you with experience." Mark Twain 2015 Zongshen ZS250GY-3 (RX3) 2006 Zongshen ZS200GY-2 (Sierra 200) 2005 Honda XR650L 2004 Honda CRF250X 1998 Kawasaki KDX220 Mods made to my Zongshen ZS200GY-2: http://www.chinariders.net/showthread.php?t=6894 |
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03-10-2015, 09:39 AM | #10 | |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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Quote:
I think the piston port Suzukis were done by '76. /hijack
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Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
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03-19-2015, 11:24 PM | #11 |
Join Date: May 2006
Location: Yuma, Arizona
Posts: 9,055
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"They say that life's a carousel, spinning fast you got to ride it well..." TGB Delivery Scooter 150 TMEC 200 Enduro--carcass is sadly rotting in the backyard |
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