Rotax Lamby build-134 by PotvinV8, on FlickrOnce again, I'll be looking to utilize the stock FMF components, which includes the silencer section.
Rotax Lamby build-135 by PotvinV8, on FlickrRotax 300 builld
Turning a corner now, literally, and we're looking to mate the main chamber to the silencer/tail pipe.
Rotax Lamby build-134 by PotvinV8, on Flickr
Once again, I'll be looking to utilize the stock FMF components, which includes the silencer section.
Rotax Lamby build-135 by PotvinV8, on Flickr
Rotax Lamby build-134 by PotvinV8, on FlickrOnce again, I'll be looking to utilize the stock FMF components, which includes the silencer section.
Rotax Lamby build-135 by PotvinV8, on Flickr
Last edited by RManson on Wed Aug 30, 2017 11:43 pm, edited 2 times in total.
Rotax Lamby build-133 by PotvinV8, on FlickrOnce the location of the silencer is sorted, the last exhaust mount can be fabricated.
Rotax Lamby build-137 by PotvinV8, on Flickr
Rotax Lamby build-138 by PotvinV8, on FlickrNote the spring mounts have also been installed between the silencer and the pipe, which allow the pipe to "grow" while still keeping everything nice and tight.
Last edited by RManson on Wed Aug 30, 2017 11:51 pm, edited 1 time in total.
Last edited by RManson on Wed Aug 30, 2017 11:51 pm, edited 1 time in total.
Here's another shot of the finished exhaust from another angle.
Rotax Lamby build-136 by PotvinV8, on Flickr
Rotax Lamby build-136 by PotvinV8, on Flickr
Last edited by RManson on Wed Aug 30, 2017 11:52 pm, edited 1 time in total.
Making some headway on the build, though I've been bad about posting updates. Mostly just lots of little things that aren't worthy of a post. Sorting out the clutch, ignition, etc. As mentioned early in the build, I'm using a Gran Turismo ignition kit, which utilizes Aprilia RS125 stuff but I couldn't get the motor to fire and run properly. Ended up swapping out the stock CDI for a programmable unit from MSD (#4217) which I can program from my laptop in addition to an MSD Blaster coil. This did the trick and now we've got a nice big spark. It also features the capability of utilizing a TPS (throttle position sensor) to create a 3D ignition map. Now just need to get a chance to set the gear change cables and take 'er for a ride!
For now, enjoy the first startup video!
Rotax Lamby build-142 by PotvinV8, on Flickr
For now, enjoy the first startup video!
Rotax Lamby build-142 by PotvinV8, on Flickr
Last edited by RManson on Wed Aug 30, 2017 11:54 pm, edited 1 time in total.
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gaz_powell
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This is great - keep it coming
Will do! Chasing a couple minor coolant leaks then it's time to shred! Then it's time to take it all apart and make it pretty. 
Pissed off the neighbors, shredded the lawn, and smiled from ear to ear (not necessarily in that order!) but managed to sneak in a ride before the sun set yesterday. Seems to want to "go" something pretty good, but a loose fork and no rear brake kept me to 2-3 gear just to check that the clutch works and it shifts through the gears. So far so good, will post a video real soon! In the meantime, here are a couple updates...
Ended up purchasing a seat from Mark at Scooter Speed. Pretty happy with the shape, but I think it will get a recover. Not because it needs it mind you, but because I can't leave well enough alone...
Rotax Lamby build-143 by PotvinV8, on Flickr
Fuel selector from a jetski so that I could utilize the "reserve" portion of the stainless tank I built, modified to mate to the stock Lambretta selector lever
Rotax Lamby build-144 by PotvinV8, on Flickr
Had to machine another sidecover so that I could run a kickstart until the motor is up and running, then I will revisit the electric start. This meant a redesign of the hydraulic clutch was possible, resulting in a better working (and removable) unit.
Rotax Lamby build-145 by PotvinV8, on Flickr
Rotax Lamby build-146 by PotvinV8, on Flickr
Ended up purchasing a seat from Mark at Scooter Speed. Pretty happy with the shape, but I think it will get a recover. Not because it needs it mind you, but because I can't leave well enough alone...
Rotax Lamby build-143 by PotvinV8, on FlickrFuel selector from a jetski so that I could utilize the "reserve" portion of the stainless tank I built, modified to mate to the stock Lambretta selector lever
Rotax Lamby build-144 by PotvinV8, on FlickrHad to machine another sidecover so that I could run a kickstart until the motor is up and running, then I will revisit the electric start. This meant a redesign of the hydraulic clutch was possible, resulting in a better working (and removable) unit.
Rotax Lamby build-145 by PotvinV8, on FlickrRotax Lamby build-146 by PotvinV8, on Flickr
Last edited by RManson on Wed Aug 30, 2017 11:58 pm, edited 1 time in total.
Once I had the bike up and running, it seemed like every day had a short "to-do" list that turned into an all-day affair. The bar ends were one of those issues.
Rotax Lamby build-149 by PotvinV8, on Flickr
Rotax Lamby build-147 by PotvinV8, on Flickr
Rotax Lamby build-148 by PotvinV8, on Flickr
Wanted to add a little more anti-vibration to the headset, plus I had these super cool Flyrite Choppers grips that my buddy Jason forgot I had. Turned out they were larger than the Lamby tubes, so some engineering was in order.
Rotax Lamby build-149 by PotvinV8, on FlickrRotax Lamby build-147 by PotvinV8, on FlickrRotax Lamby build-148 by PotvinV8, on FlickrWanted to add a little more anti-vibration to the headset, plus I had these super cool Flyrite Choppers grips that my buddy Jason forgot I had. Turned out they were larger than the Lamby tubes, so some engineering was in order.
Last edited by RManson on Wed Aug 30, 2017 11:59 pm, edited 1 time in total.