Comments on: BMX To Motorcycle Conversion http://www.motormayhem.net/2007/06/26/bmx-cycle/ By Gearheads for Gearheads Sun, 29 Aug 2010 16:04:05 +0000 http://wordpress.org/?v=2.9.2 hourly 1 By: Marquetto http://www.motormayhem.net/2007/06/26/bmx-cycle/comment-page-1/#comment-6783 Marquetto Tue, 03 Aug 2010 12:58:04 +0000 http://www.motormayhem.net/2007/06/6/#comment-6783 I will try it. Congrats for the project, you nailed to give the machine a cool and agressive look. I will try it. Congrats for the project, you nailed to give the machine a cool and agressive look.

]]> By: miles http://www.motormayhem.net/2007/06/26/bmx-cycle/comment-page-1/#comment-6374 miles Thu, 20 May 2010 17:15:48 +0000 http://www.motormayhem.net/2007/06/6/#comment-6374 You would need to get some sort of 90* gearbox to make it work with a vertical shaft engine. Otherwise you would need to go out and buy a horizontal shaft engine. A different design from mine could use a verticle shaft engine mounted directly above the rear tire and have a wheel that spins the top of the tire forward. If you decide to go that route it would be interesting to see pics of how well it works. Similar to how the 90* gear works in this water wheel to get the vertical shaft to spin except the motor would be where the grindstone is and the water wheel would be the bike. http://www.museumoflondonarchaeology.org.uk/NR/rdonlyres/35BD9BD0-D913-4D4F-A787-B12AE637C88C/0/MID_R_Spain_reconstruction0.jpg You would need to get some sort of 90* gearbox to make it work with a vertical shaft engine. Otherwise you would need to go out and buy a horizontal shaft engine.

A different design from mine could use a verticle shaft engine mounted directly above the rear tire and have a wheel that spins the top of the tire forward. If you decide to go that route it would be interesting to see pics of how well it works.

Similar to how the 90* gear works in this water wheel to get the vertical shaft to spin except the motor would be where the grindstone is and the water wheel would be the bike.

http://www.museumoflondonarchaeology.org.uk/NR/rdonlyres/35BD9BD0-D913-4D4F-A787-B12AE637C88C/0/MID_R_Spain_reconstruction0.jpg

]]> By: Lee http://www.motormayhem.net/2007/06/26/bmx-cycle/comment-page-1/#comment-6372 Lee Thu, 20 May 2010 15:40:44 +0000 http://www.motormayhem.net/2007/06/6/#comment-6372 what about if the drive shaft was at the bottom not the side ? how would you change it becuase cant turn the engine over on its side? what about if the drive shaft was at the bottom not the side ? how would you change it becuase cant turn the engine over on its side?

]]> By: luke http://www.motormayhem.net/2007/06/26/bmx-cycle/comment-page-1/#comment-6112 luke Wed, 21 Apr 2010 21:37:09 +0000 http://www.motormayhem.net/2007/06/6/#comment-6112 I'd love to do this but I'd probably kill myself not to mention its not street legal so I would have nowhere to ride it anyway. I’d love to do this but I’d probably kill myself not to mention its not street legal so I would have nowhere to ride it anyway.

]]> By: miles http://www.motormayhem.net/2007/06/26/bmx-cycle/comment-page-1/#comment-4090 miles Tue, 11 Aug 2009 06:16:56 +0000 http://www.motormayhem.net/2007/06/6/#comment-4090 Sorry for the confusion. What I meant by clutch that the sprocket is welded to is the one way mechanism that allows you to pedal the bike and then stop pedaling (or moving the pedals) with the bike still in motion. You must weld this mechanism solid before installing the sprocket. The only real clutch is on the engine drive shaft. Sorry for the confusion. What I meant by clutch that the sprocket is welded to is the one way mechanism that allows you to pedal the bike and then stop pedaling (or moving the pedals) with the bike still in motion. You must weld this mechanism solid before installing the sprocket. The only real clutch is on the engine drive shaft.

]]> By: john29302 http://www.motormayhem.net/2007/06/26/bmx-cycle/comment-page-1/#comment-4088 john29302 Tue, 11 Aug 2009 05:33:14 +0000 http://www.motormayhem.net/2007/06/6/#comment-4088 dude...you said you "Upon further inspection I realized that the clutch I had welded the sprocket onto (BMX gear) is a ....." then ya said "What do you mean? The clutch is on the engine not the sprocket." sooo...ya musta meant you welded a #35 sprocet to your rear bike sprocket?? i told em twice down at the battered womens shelter...but they already been told twice......good luck and thanlks for great pictures but get the tech writing stuff sane please dude…you said you “Upon further inspection I realized that the clutch I had welded the sprocket onto (BMX gear) is a …..” then ya said “What do you mean? The clutch is on the engine not the sprocket.” sooo…ya musta meant you welded a #35 sprocet to your rear bike sprocket?? i told em twice down at the battered womens shelter…but they already been told twice……good luck and thanlks for great pictures but get the tech writing stuff sane please

]]> By: JimYoungbird http://www.motormayhem.net/2007/06/26/bmx-cycle/comment-page-1/#comment-864 JimYoungbird Sat, 27 Dec 2008 21:53:47 +0000 http://www.motormayhem.net/2007/06/6/#comment-864 Nice job, but.....you need to weld in some gussets at the neck joints. Thats an awful lot of welding up there and the gussets will keep it all together. Much safer too. Otherwise....MOTOR ON!!!! Nice job, but…..you need to weld in some gussets at the neck joints. Thats an awful lot of welding up there and the gussets will keep it all together. Much safer too. Otherwise….MOTOR ON!!!!

]]> By: miles http://www.motormayhem.net/2007/06/26/bmx-cycle/comment-page-1/#comment-606 miles Mon, 20 Oct 2008 01:36:31 +0000 http://www.motormayhem.net/2007/06/6/#comment-606 It has brake and throttle on the handlebars. The clutch is a centrifugal clutch. It has brake and throttle on the handlebars. The clutch is a centrifugal clutch.

]]> By: Scott http://www.motormayhem.net/2007/06/26/bmx-cycle/comment-page-1/#comment-597 Scott Sat, 18 Oct 2008 15:12:54 +0000 http://www.motormayhem.net/2007/06/6/#comment-597 hi, just woundering, does he bike has a clutch and accelorator like a real motorbike. (on the hanle bars)????? hi, just woundering, does he bike has a clutch and accelorator like a real motorbike. (on the hanle bars)?????

]]> By: My Newest Bike - OldMiniBikes.com Forum http://www.motormayhem.net/2007/06/26/bmx-cycle/comment-page-1/#comment-571 My Newest Bike - OldMiniBikes.com Forum Wed, 08 Oct 2008 03:03:30 +0000 http://www.motormayhem.net/2007/06/6/#comment-571 [...] out to be defective, but the welds do have good penetration and are strong. Just not pretty. Motor Mayhem Blog Archive BMX Cycle Let me know what you [...] [...] out to be defective, but the welds do have good penetration and are strong. Just not pretty. Motor Mayhem Blog Archive BMX Cycle Let me know what you [...]

]]>