Planet Minis

crf150rb · 09-02-2008, 10:22 PM

Do you have video of when it was a 250 2-stroke? Thanks

Nooblette · 09-08-2008, 12:06 AM

I have a 250 2 stroke enduro engine that I was thinking about putting in my YSR next. I have a lifan 150cc in mine at the moment but I want a little more response. It was an enduro so it has an injector pump which I want to rebuild and run and most importantly a lighting coil. Any advice to someone looking to put a 2-smoke in? I was going to make a custom engine cage rather than modding the original like I did for my last conversion, as well as gusseting the frame a bit. Any tips or hints would be great. Also as posted earlier pictures or video would be Awesome!
Here is my bike about 5-6 months ago on its first week of running if interested

YouTube - YSR50 with lifan 150

Thanks in advance!

-Tim

crf150rb · 09-08-2008, 04:57 PM

Sweet video. Thanks!

minisforever · 09-08-2008, 08:11 PM

PainterDude · 09-16-2008, 02:56 AM

Cool Build, I have a YSR with a YZ250f... Funny I considered using the dual frame construction method also, but then opted to make my own removeable engine cradle, this way I don't have to dissassemble the motor everytime I want to remove it, as I assume you need to do... I am in the process of building another, considering a 450 this time, should bolt right into my existing chassis with a minor modification to the top motor mount...

So whats your plan for Oil Sump, Exhaust, Radiator & Top Motor Mount? FYI don't leave the top mount off, I tried & the vibes were out of control... So I fabbed 1 & all is smooth now...

Also, I hope you plan on bracing the **** out of your swing arm cae its gonna need it with all that tourque the 450 puts out....

minisforever · 09-16-2008, 09:02 AM

billwas1 · 09-16-2008, 09:15 AM

Sweet bike. Do you have to heat treat aluminum after you weld it? I thought someone told me this...

supernes550 · 09-16-2008, 09:45 AM

Quote:

Originally Posted by minisforever

Im still up in the air about the exhaust. I left enough room to make it an under tail. I also considered duals on one on each side of bike. Might make an intresting sound?? I guess when the time comes I will trust the the friends on made here on PM's and see what they prefer.

PS If anybody is planning on going to Indy Moto gp August 30, 2009 the bike will be on display there. Maybe we can meet up I would like to meet some of you in person.

i haven't seen a dual exhaust set up yet. that would definately be cool to see and hear. great build man.

will you be displaying your bike in a booth at moto gp?
i was tripping out on the weather you guys had there. is that normal for this time of year?

PainterDude · 09-16-2008, 11:56 AM

Quote:

Originally Posted by minisforever

Thanks for the positive feedback painter dude! Especially from someone thats already did this build. I alway wanted to ask you some of the problems that you ran into. so thank you very much for the advice. Yes, I did fab up an upper motor mount. Ill post new pics soon, there is just SO much time/fab work that I didnt want to bore anyone with the small stuff. feel free to pm me and we can trade different ideas. Im always intrested in others ideas. I was planning to use a ninja 250 radiator? As far as the oil tank, I took a block of foam and been shaping it around the frame and and engine head access making sure I have clearance. I will later use the block to make a fiberglass mold. Im still up in the air about the exhaust. I left enough room to make it an under tail. I also considered duals on one on each side of bike. Might make an intresting sound?? I guess when the time comes I will trust the the friends on made here on PM's and see what they prefer.

PS If anybody is planning on going to Indy Moto gp August 30, 2009 the bike will be on display there. Maybe we can meet up I would like to meet some of you in person.

Man, you like to work hard, I prefer to work smarter... I used an oil tank off a 06 YZ250F, 450 holds same amount of oil, so should work for you too.. It mounts up front in the wishbone area of the cradle, I even used the stock oil lines, just don't forget to run the top vent hose to the coressponding vent on the valve cover... I made this critical error & smoked my engine on first ride, cause NO OIL PREASURE...BE WARNED.. this hose works with crank case ventalation to complete a vacume in the oiling system...If you decide to make your oil tank, You will still need this hose, or BOOM..not fun having the wheel lock up at 60...

Exhaust you'lle have to figure out on your own, once you have everything together, But don't be supprised if you find yourself modying your frame, I did...

Ninja 250 Radiator, Where did you get that Idea??? I am running a 250 though....Still it overheats in traffic, so I cobbled together an electric fan & no problems since...

randomguy310 · 09-16-2008, 09:51 PM

hey really like your build... have you welded the swing arm yet? what kind of welding process are you going to use? tig or wire feed? just curious. if your going to wire feed it practice alot... if you can use a spoolgun even better world of difference. keep up the nice work.

shawnbassett26 · 09-16-2008, 09:58 PM

Get this thing together! Iv been working on mine secretly.....

~Shawn

minisforever · 09-17-2008, 07:45 AM

shawnbassett26 · 09-17-2008, 09:23 AM

"Shawn your 200 build had 13,467 viewers. Are you really gonna try to hold out on us like that?? I feel there are quite a few mini builders using their poker faces right now."

It will be worth the wait, just dont want any one to be like "what the hell are you doing now". Just want to see it done. Yeah not sure why people "hide" there build, so far i build to date, not just this time no one would expect for me to do this!

Keep up the good work! I need pics!!!!!!!!!!!!!

~Shawn

PainterDude · 09-17-2008, 11:10 PM

Have a donated 450 sitting on my bench right now, so instead of building a whole new bike, I decided to be the First & pull the 250F out & install the 450F this weekend, Do a little R&D then build the ultimate YSR 450F.... The 250F will be getting a 290 kit & WR 5th gear for highway riding. installed in the mean time....

I'll Post ip a video when finished...

minisforever · 09-18-2008, 08:18 AM

Nooblette · 09-18-2008, 10:24 AM

Yes I need some more pictures, Videos, sounds clips anything!!! I am trying to get motivated to actually start my next build. The only difference is this time I want to actually finish it before I put it on the road. Whenever I get something running and working, I have no drive to finish the project... For example my current Ysr has not had front blinkers ever. I had all the parts, plenty of time and tools I would just rather go up into the hills and ride

How many street miles can you get out of a 450f? I hear they like to overheat even when in the original bike and my cousin has already rebuilt the head 3 times on his race spec 08 crf450f.

I wanted to do a 450f but I want reliability and easy rebuilds. Thats one reason I decided on an enduro style 2 stroke. I already know it can take the long highway miles cause we have similar ones sitting around with 30,000 miles on them on and off road. $75 for new piston, wrist pin, circlips, rings and head gasket. A little honing and your off

50mAfIa · 09-18-2008, 11:39 AM

[quote=Nooblette;1005582]
How many street miles can you get out of a 450f? I hear they like to overheat even when in the original bike and my cousin has already rebuilt the head 3 times on his race spec 08 crf450f.

QUOTE]

u answered thequestion on the last sentence about ur cuz.

Nooblette · 09-18-2008, 12:13 PM

I was wondering if there was something you could do to remedy the problem such as lowering compression a little or changing valves and valve seats out in the head for the titanium ones. He keeps cracking right between spark plug holes and valves. You can only repair a head so many times. Bust also Street is a little different than HARD CORE RIDING

I will get some pics up of my cuz

808stunna · 09-18-2008, 01:47 PM

my 04 crf450R is great on the highways and dosnt over heat at all.

minisforever · 09-21-2008, 07:39 PM

09-02-2008, 10:22 PM	#21 (permalink)
crf150rb PM Newbie Join Date: Jul 2008 Location: So Cal Posts: 12	Re: ysr/450 build Do you have video of when it was a 250 2-stroke? Thanks

09-08-2008, 12:06 AM	#22 (permalink)
Nooblette 1st Gear Member Join Date: Apr 2008 Location: Fresno, Ca. Posts: 182	Re: ysr/450 build I have a 250 2 stroke enduro engine that I was thinking about putting in my YSR next. I have a lifan 150cc in mine at the moment but I want a little more response. It was an enduro so it has an injector pump which I want to rebuild and run and most importantly a lighting coil. Any advice to someone looking to put a 2-smoke in? I was going to make a custom engine cage rather than modding the original like I did for my last conversion, as well as gusseting the frame a bit. Any tips or hints would be great. Also as posted earlier pictures or video would be Awesome! Here is my bike about 5-6 months ago on its first week of running if interested YouTube - YSR50 with lifan 150 Thanks in advance! -Tim

09-08-2008, 04:57 PM	#23 (permalink)
crf150rb PM Newbie Join Date: Jul 2008 Location: So Cal Posts: 12	Re: ysr/450 build Sweet video. Thanks!

09-08-2008, 08:11 PM	#24 (permalink)
minisforever PM Newbie Join Date: Aug 2008 Location: Flint Michigan Posts: 64	Re: ysr/450 build *** Last edited by minisforever; 11-13-2008 at 10:19 AM.

09-16-2008, 02:56 AM	#25 (permalink)
PainterDude PM Newbie Join Date: Mar 2008 Posts: 7	Re: ysr/450 build Cool Build, I have a YSR with a YZ250f... Funny I considered using the dual frame construction method also, but then opted to make my own removeable engine cradle, this way I don't have to dissassemble the motor everytime I want to remove it, as I assume you need to do... I am in the process of building another, considering a 450 this time, should bolt right into my existing chassis with a minor modification to the top motor mount... So whats your plan for Oil Sump, Exhaust, Radiator & Top Motor Mount? FYI don't leave the top mount off, I tried & the vibes were out of control... So I fabbed 1 & all is smooth now... Also, I hope you plan on bracing the **** out of your swing arm cae its gonna need it with all that tourque the 450 puts out.... Last edited by PainterDude; 09-16-2008 at 03:24 AM.

09-16-2008, 09:02 AM	#26 (permalink)
minisforever PM Newbie Join Date: Aug 2008 Location: Flint Michigan Posts: 64	Re: ysr/450 build *** Last edited by minisforever; 11-13-2008 at 10:20 AM.

09-16-2008, 09:15 AM	#27 (permalink)
billwas1 2nd Gear Member Join Date: Dec 2007 Location: Saginaw, MI Posts: 360	Re: ysr/450 build Sweet bike. Do you have to heat treat aluminum after you weld it? I thought someone told me this...

09-16-2008, 09:51 PM	#30 (permalink)
randomguy310 PM Newbie Join Date: Feb 2008 Posts: 31	Re: ysr/450 build hey really like your build... have you welded the swing arm yet? what kind of welding process are you going to use? tig or wire feed? just curious. if your going to wire feed it practice alot... if you can use a spoolgun even better world of difference. keep up the nice work. Last edited by randomguy310; 09-16-2008 at 09:55 PM.

09-16-2008, 09:58 PM	#31 (permalink)
shawnbassett26 2nd Gear Member Join Date: Feb 2008 Location: Orlando FL Posts: 807	Re: ysr/450 build Get this thing together! Iv been working on mine secretly..... ~Shawn

09-17-2008, 07:45 AM	#32 (permalink)
minisforever PM Newbie Join Date: Aug 2008 Location: Flint Michigan Posts: 64	Re: ysr/450 build *** Last edited by minisforever; 11-13-2008 at 10:20 AM.

09-17-2008, 09:23 AM	#33 (permalink)
shawnbassett26 2nd Gear Member Join Date: Feb 2008 Location: Orlando FL Posts: 807	Re: ysr/450 build "Shawn your 200 build had 13,467 viewers. Are you really gonna try to hold out on us like that?? I feel there are quite a few mini builders using their poker faces right now." It will be worth the wait, just dont want any one to be like "what the hell are you doing now". Just want to see it done. Yeah not sure why people "hide" there build, so far i build to date, not just this time no one would expect for me to do this! Keep up the good work! I need pics!!!!!!!!!!!!! ~Shawn

09-17-2008, 11:10 PM	#34 (permalink)
PainterDude PM Newbie Join Date: Mar 2008 Posts: 7	Re: ysr/450 build Have a donated 450 sitting on my bench right now, so instead of building a whole new bike, I decided to be the First & pull the 250F out & install the 450F this weekend, Do a little R&D then build the ultimate YSR 450F.... The 250F will be getting a 290 kit & WR 5th gear for highway riding. installed in the mean time.... I'll Post ip a video when finished... Last edited by PainterDude; 09-17-2008 at 11:13 PM.

09-18-2008, 08:18 AM	#35 (permalink)
minisforever PM Newbie Join Date: Aug 2008 Location: Flint Michigan Posts: 64	Re: ysr/450 build *** Last edited by minisforever; 11-13-2008 at 10:20 AM.

09-18-2008, 10:24 AM	#36 (permalink)
Nooblette 1st Gear Member Join Date: Apr 2008 Location: Fresno, Ca. Posts: 182	Re: ysr/450 build Yes I need some more pictures, Videos, sounds clips anything!!! I am trying to get motivated to actually start my next build. The only difference is this time I want to actually finish it before I put it on the road. Whenever I get something running and working, I have no drive to finish the project... For example my current Ysr has not had front blinkers ever. I had all the parts, plenty of time and tools I would just rather go up into the hills and ride How many street miles can you get out of a 450f? I hear they like to overheat even when in the original bike and my cousin has already rebuilt the head 3 times on his race spec 08 crf450f. I wanted to do a 450f but I want reliability and easy rebuilds. Thats one reason I decided on an enduro style 2 stroke. I already know it can take the long highway miles cause we have similar ones sitting around with 30,000 miles on them on and off road. $75 for new piston, wrist pin, circlips, rings and head gasket. A little honing and your off

09-18-2008, 11:39 AM	#37 (permalink)
50mAfIa 3rd Gear Member Join Date: Apr 2004 Location: Riverside!! SoCal Posts: 1,321	Re: ysr/450 build [quote=Nooblette;1005582] How many street miles can you get out of a 450f? I hear they like to overheat even when in the original bike and my cousin has already rebuilt the head 3 times on his race spec 08 crf450f. QUOTE] u answered thequestion on the last sentence about ur cuz.

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09-18-2008, 12:13 PM	#38 (permalink)
Nooblette 1st Gear Member Join Date: Apr 2008 Location: Fresno, Ca. Posts: 182	Re: ysr/450 build I was wondering if there was something you could do to remedy the problem such as lowering compression a little or changing valves and valve seats out in the head for the titanium ones. He keeps cracking right between spark plug holes and valves. You can only repair a head so many times. Bust also Street is a little different than HARD CORE RIDING I will get some pics up of my cuz

09-18-2008, 01:47 PM	#39 (permalink)
808stunna 2nd Gear Member Join Date: Feb 2006 Location: maui hi Posts: 374	Re: ysr/450 build my 04 crf450R is great on the highways and dosnt over heat at all.

09-21-2008, 07:39 PM	#40 (permalink)
minisforever PM Newbie Join Date: Aug 2008 Location: Flint Michigan Posts: 64	Re: ysr/450 build *** Last edited by minisforever; 11-13-2008 at 10:20 AM.