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update of my 239cc beast LXR

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Discussion starter · #83 ·
Salsa said:
Where is a new update.



You have us hooked.



Please MORE!!!!!!!!!!!!!!!!!!



Don
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So far 8 motos, and seven holse shots,, found out if you overrev each gear it really does not go a bunch quicker than other modded engines, but if you shift it as quick as you can and get to top gear fast, It walks away from the rest.

It is still a too quick and brutal right off the bottom and mid on small tracks.

I took a pretty good crash last race, went double double double the lap before, but the next lap, doubled the first one pretty good, and just a tad bit too much on the next and hit the face of the next take off an little angled, as I tried to get enough drive to make it over the third, the rear tire broke loose and sent the bike off to an angle and I clipped the landing sideways and went down quick!!

Went from second to fifth instantly, was able to pick it up and make my way up to finish third overall.

I can hardly wait till the snow melts and the big outdoor tracks are open.
 
Discussion starter · #84 ·
Update,, well after win or crash, I decided to try something different, so I tore the beast down and changed it up a bit,, funny how a few mm here and there can make a difference,, went to 236cc, 69 stroke, 66 bore,.

So much nicer, the pwoer is still instant but not as abrupt, smoother running,and a wider powerband.



here is a video of a Nik Simpson testing it out on his big bike Arenacross style track.





 
#85 ·
Matified said:
Update,, well after win or crash, I decided to try something different, so I tore the beast down and changed it up a bit,, funny how a few mm here and there can make a difference,, went to 236cc, 69 stroke, 66 bore,.

So much nicer, the pwoer is still instant but not as abrupt, smoother running,and a wider powerband.



here is a video of a Nik Simpson testing it out on his big bike Arenacross style track.





YouTube - Testing 2010 minimoto sx PitsterTrack #2 ON FRD 236CC race bike
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nice , looks like he used about 1/4 throttle to clear the big step on step off and the triple section lol.

so whats the guesstamated hp at rear wheel ? 25? more? scared to see cos ya won't want to ride it again lol.

very nice.
 
#91 ·
Matt,

That's the beast and that kid Nik can ride it. Wow.

Beautiful mountains in the background..
 
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#93 ·
Flying fishsticks batman that thing rips......Is that the new daytona....:):):):)

pretty amazing you were able to stroke that to 69 and still keep the stock look of the top end. Can't wait to see this along with your other builds at Vegas. Red Baron and BBR look out we have another top podium contender.
 
#94 ·
In Oz we would call the bike a rip snorter. Thanks for the vid was great to see the beast flying. The motor sounds very smooth and reliable. Just goes to show how much potential these little cheap china's really have in the hands of a great mechanic.

Ride on. DD
 
#95 ·
Methinks your tractor's sexy;)



Must be some added clearance in the close ratio gears, eh, or as the 'caaat said, stuff hits stuff.



How much base spacer/increased jug height? Would require a 90mm rod (1.3 R/S, yikes) without some added deck, with 7mm more throw than a 155...
 
#98 ·
Matified said:
Thanks, you are correct, there surely will be larger engines sooner or later, for me? not too sure as this was a tight squeeze and alot of fabrication.

I think if everyone assumed that a certain size or configuration is the end all and we stop thinking outside the box, the sport will get boring.
Click to expand...


I have the z155 w/V2 and it is a bear to start with a decomp.



What do you have on the motor for ease of starting?



Is this a motor that PP might ever sell?
 
Discussion starter · #99 ·
kdm197 said:
I have the z155 w/V2 and it is a bear to start with a decomp.



What do you have on the motor for ease of starting?



Is this a motor that PP might ever sell?
Click to expand...




What style of decomp??



I use a version of my FRD EZd decomp, mine uses a cable so I do not have to reach down and reset it everytime.



I do not think that these engines will be for sale anytime soon, takes alot of work to make these ,cases, canks, trans, connecting rod, piston,cylinder , head, take alot of custom maching and hand fabrication.
 
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