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lambretta 290 rotax

Need help with a tuning kit, how do you tune your scooter, which kit should I choose, and all general tuning and modifcations questions are for in here.

Re: lambretta 290 rotax

Postby holty » Thu Jul 06, 2017 11:07 pm

a view of the case inlet with crank fitted

[url][url=https://flic.kr/p/WqMWuG]Image[/url]IMG_0945 by stephen holt, on Flickr[/url]
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Re: lambretta 290 rotax

Postby Knowledge » Fri Jul 07, 2017 9:01 am

holty wrote:I think i will have to machine the inside of the mag housing to get the stator further in, so it will line up with the flywheel pickups.


Why don't you go for one of Anthony Tambs' external pick-up? You can retain the existing stator and there is no need to machine the inside of the mag flange, and you can adjust the timing with the motor running.

A great bit of kit. In fact, all Scootronics products are great.
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Re: lambretta 290 rotax

Postby holty » Fri Jul 07, 2017 3:22 pm

Knowledge wrote:
holty wrote:I think i will have to machine the inside of the mag housing to get the stator further in, so it will line up with the flywheel pickups.


Why don't you go for one of Anthony Tambs' external pick-up? You can retain the existing stator and there is no need to machine the inside of the mag flange, and you can adjust the timing with the motor running.

A great bit of kit. In fact, all Scootronics products are great.


thats a very good idea, will save a bit of messing about, he also does his own high powered coil, i will send him a message of fb,
cheers :D
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Re: lambretta 290 rotax

Postby holty » Sat Jul 29, 2017 10:04 pm

made my packer plate to go under the cylinder, and ive made my inlet manifold an test fitted the carb

ImageIMG_1069 by stephen holt, on Flickr
ImageIMG_1071 by stephen holt, on Flickr
ImageIMG_1070 by stephen holt, on Flickr
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Re: lambretta 290 rotax

Postby holty » Fri Aug 04, 2017 6:59 pm

a couple more pics, ive added a bump stop
ImageIMG_1094 by stephen holt, on Flickr
ImageIMG_1095 by stephen holt, on Flickr
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Re: lambretta 290 rotax

Postby holty » Tue Aug 15, 2017 5:39 pm

done a bit more over the weekend, got the pipe partly done, more pics later

ImageIMG_1119 by stephen holt, on Flickr
ImageIMG_1118 by stephen holt, on Flickr
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Re: lambretta 290 rotax

Postby holty » Tue Aug 29, 2017 2:43 pm

pipe finished
ImageUntitled by stephen holt, on Flickr
ImageUntitled by stephen holt, on Flickr
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Re: lambretta 290 rotax

Postby holty » Tue Aug 29, 2017 3:00 pm

found a solution to my fuel tank issue, and extra bracket will need fabricating to hold the tank in place
ImageTank by stephen holt, on Flickr
Last edited by holty on Thu Sep 07, 2017 3:34 pm, edited 1 time in total.
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Re: lambretta 290 rotax

Postby modster79 » Tue Aug 29, 2017 4:35 pm

Enjoy this thread, nice work on the engine and exhaust.
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Re: lambretta 290 rotax

Postby holty » Tue Aug 29, 2017 5:28 pm

modster79 wrote:Enjoy this thread, nice work on the engine and exhaust.


many thanks
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Re: lambretta 290 rotax

Postby Toddy » Wed Aug 30, 2017 6:13 am

Nice work , that throttle cables going to be tight ;)
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Re: lambretta 290 rotax

Postby hullygully » Wed Aug 30, 2017 6:17 pm

it's just like waiting for the next series of Game Of Thrones this....... :lol:
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Re: lambretta 290 rotax

Postby Toddy » Wed Aug 30, 2017 6:41 pm

hullygully wrote:it's just like waiting for the next series of Game Of Thrones this....... :lol:


What's that? :lol:
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Re: lambretta 290 rotax

Postby rossclark » Wed Aug 30, 2017 6:51 pm

Toddy wrote:
hullygully wrote:it's just like waiting for the next series of Game Of Thrones this....... :lol:


What's that? :lol:


Soft porn with dragons
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Re: lambretta 290 rotax

Postby holty » Fri Sep 01, 2017 5:16 pm

ive got a bit of wiggle room with the tank, i can move it a bit more forward, and can probably twist carb a bit to clear the throttle cable, i will need a long cable as well, ive done a bit more to the clutch, more pics in the next episode !
:D
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Re: lambretta 290 rotax

Postby Warkton Tornado No.1 » Fri Sep 01, 2017 5:26 pm

holty wrote:ive got a bit of wiggle room with the tank, i can move it a bit more forward, and can probably twist carb a bit to clear the throttle cable, i will need a long cable as well, ive done a bit more to the clutch, more pics in the next episode !
:D


You could always fit a 'snake-head' carb top or weld a curved, through tube in the tank, though I often run elbows atop the carb when LH manifolds are shortened for use with bigger carbs as they can get too close to the toolbox. Helps if you mimic the Serveta throttle arm return spring in any case... ;)
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Re: lambretta 290 rotax

Postby holty » Sun Sep 03, 2017 6:52 pm

clutch spider altered and fitted
ImageUntitled by stephen holt, on Flickr
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Re: lambretta 290 rotax

Postby Adam_Winstone » Wed Sep 06, 2017 6:40 pm

The photo of the case inlet and reed block seat illustrated why I decided to have the inner edge of the webs chamfered for flow on my case induction motor. Whether it makes any difference or not is another matter :lol:

Nice work.

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Re: lambretta 290 rotax

Postby holty » Thu Sep 07, 2017 3:40 pm

Toddy wrote:Nice work , that throttle cables going to be tight ;)

yes it is, but ive checked and just enough room , gear and clutch cables are tight, but will fit.
ImageUntitled by stephen holt, on Flickr
ImageUntitled by stephen holt, on Flickr
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Re: lambretta 290 rotax

Postby holty » Thu Sep 07, 2017 3:50 pm

Adam_Winstone wrote:The photo of the case inlet and reed block seat illustrated why I decided to have the inner edge of the webs chamfered for flow on my case induction motor. Whether it makes any difference or not is another matter :lol:

Nice work.

Adam

thanks adam, yes flowing the crank wasnt something i had thought about until i saw yours, but crank is installed now so is staying as is, mine does have a big boost port though,im hoping that will help, and im going to enlarge the exhaust port slightly before the top end gets fitted, im hoping it will make good power, had to reduce my packer plate a bit to get the port timings lowered a bit, still got to skim the head.
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