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Re: Rotax 300 builld

Posted: Tue Oct 18, 2016 9:18 pm
by TED CRUD
Just a load of parts Holty ,i will start my own thread when its moving along .Meanwhile i will sit back and enjoy RMason`s epic journey :)

Re: Rotax 300 builld

Posted: Tue Nov 15, 2016 5:06 am
by RManson
Finally got my head around the electric starter after having a ton of little issues. Turns out 3rd time's a charm as I've machined and adapted at least three different starter configurations before settling on the final setup, which consisted of a modified Aprilia RS125 starter bendix with KTM 450 idler gear, a KTM 450 starter and one-off mag housing. The Aprilia RS125 flywheel and ring gear wear also modified to suit.

With the final piece of the puzzle now complete it's time to shake things down for a bit and then move on to detail and final assembly.

ImageRotax Lamby build-180 by PotvinV8, on Flickr

ImageRotax Lamby build-181 by PotvinV8, on Flickr

ImageRotax Lamby build-182 by PotvinV8, on Flickr

ImageRotax Lamby build-183 by PotvinV8, on Flickr

Re: Rotax 300 builld

Posted: Tue Nov 15, 2016 6:41 am
by RManson
Of course it wouldn't be complete without the video...


ImageRotax Lamby build-184 by PotvinV8, on Flickr

Re: Rotax 300 builld

Posted: Fri Nov 18, 2016 2:29 pm
by holty
nice work ryan, sounds sweet, i bet your pleased after all that hard work, im going to stick with the original kickstart on mine.

Re: Rotax 300 builld

Posted: Sun Nov 20, 2016 9:00 am
by RManson
:D

Re: Rotax 300 builld

Posted: Sun Nov 20, 2016 11:15 am
by gerryjunior
some fantastic work on this scoot, i've enjoyed following this , well done and enjoy.

Re: Rotax 300 builld

Posted: Sun Nov 20, 2016 12:53 pm
by psychedelicropcircle
sounds the bizness when you building me one :shock: :lol:

Re: Rotax 300 builld

Posted: Tue Nov 22, 2016 10:23 pm
by Rich_T
An epic job and an epic journey, superbly done!

Re: Rotax 300 builld

Posted: Tue Nov 22, 2016 10:28 pm
by Mr G in NYC
IMPRESSIVE job , well done !

G.

Re: Rotax 300 builld

Posted: Wed Feb 08, 2017 6:14 am
by RManson
Thanks guys!

Not a whole lot going on, just working out a handful of kinks in preparation for the Rides of March here in California in a few weeks. Having put a few miles on the bike, one of the things that really bugged was the shifting. I never really cared for how far the gearshift traveled between first and fourth and with drop bars, it's even worse, so improving that has been the biggest goal as of late.

My solution was to fabricate the largest pulley i could fit under the headset and narrow the shift cross on the engine case. The results are a close-ratio set up (of sorts) with surprisingly easy effort. I figured that a fair bit of leverage would be loss due to the resulting ratio between the shift cross and the lever itself, but it seems to be pretty negligible. I machined a new adjuster block from scratch and incorporated an adjuster for the rearset brake as well, while taking care to ensure that the cables all end up nice and in line with the rod ends, etc. My last attempt suffered from misalignment issues, so this was important to the success of the overall design. Anyways, here are a few pics...

ImageRotax Lamby build-185 by PotvinV8, on Flickr

ImageRotax Lamby build-186 by PotvinV8, on Flickr

ImageRotax Lamby build-187 by PotvinV8, on Flickr

ImageRotax Lamby build-188 by PotvinV8, on Flickr

ImageRotax Lamby build-189 by PotvinV8, on Flickr