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filthyboatguy

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Discussion starter · #1 ·
These are my opinions, yours may differ.



I have four kids, and alot of minis (Sikk 107, XR50 modded w/88, ported head, BB pipe, 20mm..., RM65, RM60, PW50 and a KTM 50 Sx Senior). I recently sold my modded SV650 and KTM LC4 Supermoto. The Sikk 107, PW50 and XR"88" are setup for Supermoto.



I bought my Sikk from Atom after I test rode one in his neighborhood, for the price of a CRF50 and change (or less at some SoCal dealers) I was told to expect 3 weeks for delivery. Atom not only was true to his word on delivery, but delivered my bike in person to my door. I plan on taking my "Pit Bike" business to Rotten Inc. from now on.



My biggest fear was my bike would get beat up in transit from overseas, it arrived unscathed, well packaged and looking good.



While putting it together (bars and controls only) I noticed it was missing 2 bolts, the muffler canister bolt and 1 of the bolts that holds the seat on, no biggie. Some rummaging through my spares fixed that problem.



Some spokes were loose, but other than that it was put together quite well.



I drained the weak excuse for oil from the bike and replaced it with 10W40, filled it up with gas and it started after about 15 kicks. Seemed to run a little lean on startup but got better as it warmed up.



After an hour of heat cycling and break in, I drained the oil and made some mods for my supermoto race coming up. I moved the needle up one notch, raised the forks 1.5", put on a Takegawa intake and UNI ail filter, different throttle cable, BBR carb cap, Pro Taper bars, Scott grips, Cheng Shin C131s and some Acerbis handguards. I bought the tires and handguards, the rest I added just cause I had them lying around.



Then I took it for a good ride.



Perfect jetting at sea level, no bog anywhere, throttle wheelies in 3rd gear, smooth clutch, geared low for MX so not impressive top end (40MPH), great rear brake, front brake not so great (1 piston front, 2 piston rear). Suspension stiff but breakin' in it seems.



Loaded it up and headed for Grange Motor Circuit in Apple Valley, CA.



Ran about 15 miles WFO in 3rd and 4th. Needs way higher gearing for supermoto use. On the 650ft straight I was topped out 1/4 of the way down it. Front brake seemed to bed in and was actually working good by the end of the day (works great now). Need to add heavier oil in the forks and add preload to the rear shock, but hey, I'm 250 lbs. with gear 8O



Negative points: Lost the muffler bolt again, and bent the right footpeg mount 10 degrees down on a pretty decent tabletop, again I go about 2-fiddy with gear.



My plans for it: Get a custom bent stainless front brake line and possibly go to a 12" rear wheel. Also go with a chromoloy footpeg mount, add heavier fork oil and possibly some spacers to preload the front and crank preload on the rear. Go up one in the front on the countershaft and drop a couple in the rear.



Works good for Supermoto, drags pegs with the Cheng Shins :lol:



I'll don't know about mini SX, no plans for anything but Supermoto for this bike.



My recommendation:



If you gotta have a Honda, well buy one.



If you want a great bike at a great price and super customer service, call up Rotten and order a Sikk 107.



Yeah this is a knock off, but it's a knock off of about a $4000 built Honda, and a very good one at that.



My 1 to 10 rating: 9.5



My opinion, I'm happy :D



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hopefully i dont bend the foot peg mount on mine that arrives at adam's shop/house this friday. I wonder how long shipping will take? I live in Sacramento. Im going to be jumping bmx/mx style jumps on mine. I know that im going to have to put heavier weight oil in the forks, and probably an I-Shock in the rear, but what else do you recommend that i do if im going to jump it? I weigh about 150.
 
Discussion starter · #7 ·
Motarded said:
LOL. I love it when there's like 40 people standing along that wall watching. We need to get togethr and ride man, my bike is coming together pretty good so I will be ready soon!


That would be cool, where you located? We usually ride Amago and Grange, live in San Diego.
 
filthyboatguy said:
... and possibly go to a 12" rear wheel.


Would there be any clearance issues using a 12" rear with the stock swingarm? If not, this might help solve the one thing I don't like about the looks... the ass low/nose high stance it would have if your forks were in the stock position. Are the proper 12" rear rims available to lace to the stock hub?
 
Discussion starter · #17 ·
Imaposer said:
[quote name='filthyboatguy']... and possibly go to a 12" rear wheel.


Would there be any clearance issues using a 12" rear with the stock swingarm? If not, this might help solve the one thing I don't like about the looks... the ass low/nose high stance it would have if your forks were in the stock position. Are the proper 12" rear rims available to lace to the stock hub?[/quote]



It'll clear with a 12"...............
 
just got to ride one today, actually im impressed. not saying that is super good, but its better than the sdg and 1000$ cheaper!

the motor is pretty tourqey, but my 88 still beat it in accell and top speed. even with 4th gear i beat it :roll: 1st is crazy useless, NEEEDS a bigger sprocket setup.

i liked the feel of the clutch, pulls better than most.

pegs felt good, shifter needs to be replaced, rear brake needs some ajustment, chain needs to be ajusted, havent checked the valves yet, but they feel tight when riding, well see.

the shock is crappy, came with a plastic shrader valve cap that will make someone think that its make to pump up. there was some oil leaking around the valve, its just junk like all the others copys.

i will be attempting to destroy this bike, so youll all see if its decent or another cheap POS.
 
AtomRoTTeN said:
I have the rims to do the rear 12" rim. The front is a bit high but using the XR70 i shock it more then evens out the ride.


2 questions about that...



1. if you use the XR70 Ishock does the increased swingarm angle cause even more problems with the chain slider?



2. How much are the 12' rims?



I would probably be upgrading the shock anyway so if it doesn't create problems this would probably be the best option due to cost to benefit ratio and from what I understand there is a better selection of 10" rear tires too.



on the issue of chain sliders... why is it that none of the aftermarket frame manufacturers lower the swingarm pivot to keep the countershaft/pivot/axle more in line when using the common longer swingarm/shock set-ups? Every bike I see has the top run of the chain being pulled down into the swingarm under load. This is bad. It creates wear, power sapping drag and negatively affects rear suspension action. It looks like it could be easily rectified by merely lowering the pivot an inch or so. Am I missing something here?
 
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