MPS 500 AF welds exposed

pstoffers · Post by **pstoffers** » December 28th, 2008, 5:24 pm

Exnav wrote:

Post by **AlisoBob** » December 28th, 2008, 5:39 pm

Wheelie-Gene wrote:IIt's good also to hand out the POS statements when it's warranted.

The goal is constructive critizcism DURING the build, and have the guy turn the corner and produce a quality bike. Thats why we post photos during the build to share with others. I did my airbox and silencer twice, knowing I was going to take a jab or two if I didnt.... Right Sabre?

Nobody wants to come down on a guy after all that blood and sweat that a build takes.... but it happens.

I would much rather have a guy stop, think, absorb, and carry on in a better direction after hearing input from the gang....

Tough Love? You bet!

If I had more support on the other site, maybe Spike would still be with us?

sabreguy · Post by **sabreguy** » December 28th, 2008, 9:17 pm

AlisoBob wrote:
Wheelie-Gene wrote:IIt's good also to hand out the POS statements when it's warranted.

The goal is constructive critizcism DURING the build, and have the guy turn the corner and produce a quality bike. Thats why we post photos during the build to share with others. I did my airbox and silencer twice, knowing I was going to take a jab or two if I didnt.... Right Sabre?

Yea and the crap way you were going to do your pipe hanger too.

Balaclava · Post by **Balaclava** » December 28th, 2008, 10:44 pm

JBaze wrote:Looks good Balaclava. What year and generation is your second build again? A guy here is trying pretty hard to dump a blown up 02 450 and I seriously considering picking it up.

Well said Bob.

my 2nd is a gen3 250 conversion...i saw chachi talking about how great he feels this bike is so i figured i would build one while i'm still not walking...btw i'm still not walking

...Dude you should 100% convert that 450...here's my 450...it looks ALOT like the mps bike...

chachi243 · Post by **chachi243** » December 29th, 2008, 9:28 am

well my take on the 7 ive built...the 450's are way easier than a 250F or X but the CR250R is by far the easiest.... once you get the cradle licked, the airboot and pipe and silencer practically fall in place.... very tidy... the 450's, well tons of room, but i had to mollyhawk everything to get it to look good and work..... i am dying to do a 125 chassis but the 250 is already so nimble i think i may just end up in trouble.... there IS such a thing as too nimble or TWITCHY!!!...... JBAZE, the 450 is good if youre a bigger guy or if you really love how a 450 handles..... i am niether big nor a huge fan of 450 handling (yes ive tried valving and different offset triples, me still no likey) so riding 250's is what i like the best from the build aspect all the way to the checkered flag....
Baclava, sucks to hear your still not able to flog that thing but it looks great!

JBaze · Post by **JBaze** » December 29th, 2008, 10:21 am

chachi243 wrote:well my take on the 7 ive built...the 450's are way easier than a 250F or X but the CR250R is by far the easiest.... once you get the cradle licked, the airboot and pipe and silencer practically fall in place.... very tidy... the 450's, well tons of room, but i had to mollyhawk everything to get it to look good and work..... i am dying to do a 125 chassis but the 250 is already so nimble i think i may just end up in trouble.... there IS such a thing as too nimble or TWITCHY!!!...... JBAZE, the 450 is good if youre a bigger guy or if you really love how a 450 handles..... i am niether big nor a huge fan of 450 handling (yes ive tried valving and different offset triples, me still no likey) so riding 250's is what i like the best from the build aspect all the way to the checkered flag....
Baclava, sucks to hear your still not able to flog that thing but it looks great!

I have never ridden a 450. But I'm 6' 6" and 350lbs, and my gen 2 250 feels like a tot goat under me, I'm kind of after a tall stature bike and this 450 keeps popping up. Just kickin it around right now.

Exnav · Post by **Exnav** » December 29th, 2008, 10:33 am

Do it already

Balaclava · Post by **Balaclava** » December 29th, 2008, 11:59 am

JBaze wrote:
chachi243 wrote:Baclava, sucks to hear your still not able to flog that thing but it looks great!

I have never ridden a 450. But I'm 6' 6" and 350lbs, and my gen 2 250 feels like a tot goat under me, I'm kind of after a tall stature bike and this 450 keeps popping up. Just kickin it around right now.

Thanks Chachi, means quite a bit coming from the master...anyways Baze the 02 450 is the biggest bike you can ride. Next to my 06 450 it's a monster...and with the light 500 engine in it, it's a handful because it's so light, but still a blast, until you shatter your ankle on it...

jbird_710 · Post by **jbird_710** » December 30th, 2008, 11:43 am

JBaze wrote:I have never ridden a 450. But I'm 6' 6" and 350lbs, and my gen 2 250 feels like a tot goat under me, I'm kind of after a tall stature bike and this 450 keeps popping up. Just kickin it around right now.

I'm 6'2" and every bit of 350 lbs; the '02 CRF450 seems to work good for me. I had springs made to my weight and went with the BRP 20mm offset, under bar steering dampener, and Suzuki tall bend Pro Taper bars. The swingarm placement goofs with the geometry on the '02 and, if you ride MX, will feel strange in the corners. I was riding up and over berms when attacking them until I went with the 20 mm offset. Now, it's as plush as can be. Also, using the under-bar stabilizer raises the bars and makes for a more comfortable ride when standing on the pegs. The steering stabilizer makes blowing through long deep loam or sand straight sections feel much more controllable.

cryzsurfer · Post by **cryzsurfer** » December 30th, 2008, 7:15 pm

I don't see what's so bad about the welds or the size of the mount foot print of the MPS bike. With the two motor mounts, swingarm and head stays that's plenty, so there's really no reason to have really long motor mounts as this increases the stresses with the more weld you put on. I'm going to split the difference in the size of mine. I'm starting the motor mounts tomorrow as soon as I can round up the material and get it to the water jet guy. Did some on my aluminum gas tank today and it's turned out to be the real bear. I finally get to ride the 98 CR500 I got a few weeks ago this week.

It's been so busy at work it's really getting hard to work on my AF project and I should complain.
Craigus

http://www.youtube.com/user/500bigbore · December 31st, 2008, 7:57 am

dude that material for the tank is thicker than the frame!

dannygraves · Post by **dannygraves** » December 31st, 2008, 8:03 am

sick tank dude, look forward to seeing it finished

teemtrubble · Post by **teemtrubble** » December 31st, 2008, 9:46 am

Load Dispertion and Harmonics is why the size of the foot print is a factor. Pre and Post Stress relieving and Heat Treating will minumize stress and Harmonic's better known as "Vibration" and reduce the risk of failures...

JBaze · Post by **JBaze** » December 31st, 2008, 9:59 am

Mike, it would sure be nice if you could explain things so people could understand!

teemtrubble · Post by **teemtrubble** » December 31st, 2008, 10:13 am

That is a bitchen tank I'd like to see the cap off...

Post by **AlisoBob** » December 31st, 2008, 10:17 am

JBaze wrote:Mike, it would sure be nice if you could explain things so people could understand!

I'll do it...

Flimsy shit buzzes......

Class Dismissed....

teemtrubble · Post by **teemtrubble** » December 31st, 2008, 10:17 am

Post by **AlisoBob** » December 31st, 2008, 10:32 am

Any of the stable patterns shown wont crack anything.

The periods of transition are unstable harmonics for this particular piece of steel in the video.

Balaclava · Post by **Balaclava** » December 31st, 2008, 10:36 am

harmonics indeed...

CR500 4 Ever · Post by **CR500 4 Ever** » December 31st, 2008, 1:42 pm

cryzsurfer wrote:I don't see what's so bad about the welds or the size of the mount foot print of the MPS bike. With the two motor mounts, swingarm and head stays that's plenty, so there's really no reason to have really long motor mounts as this increases the stresses with the more weld you put on. I'm going to split the difference in the size of mine. I'm starting the motor mounts tomorrow as soon as I can round up the material and get it to the water jet guy. Did some on my aluminum gas tank today and it's turned out to be the real bear. I finally get to ride the 98 CR500 I got a few weeks ago this week. It's been so busy at work it's really getting hard to work on my AF project and I should complain.
Craigus

Sick tank, looks like a lot of work though. For what just the

factor?. Or do plan on launchin' a 90ft'er to tank landing.

Post by **AlisoBob** » December 31st, 2008, 1:45 pm

Yea... he should just melt the god damm thing with a blow torch, and shove the bottom in with a hammer handle like they do it in Indiana.....

CR500 4 Ever · Post by **CR500 4 Ever** » December 31st, 2008, 2:17 pm

AlisoBob wrote:Yea... he should just melt the god damm thing with a blow torch, and shove the bottom in with a hammer handle like they do it in Indiana.....

Good call.....

Seriously though why the aluminum tank? I thought they were for EFI systems, to keep the sides from sucking in?

cryzsurfer · Post by **cryzsurfer** » December 31st, 2008, 4:08 pm

I'm going with the alloy tank so I can weld in some relief on the bottom for the spark plug which will probably reduce the capacity some. Figured I'd make up for that with some extra up top. I went with thicker stuff for the top and sides to prevent the smaller dents and such and going with .062" for the stuff below the frame line. You're right that it's not worth the extra work, but I've gone too far to turn back now. I'll have to take a pic of the bung as it's beautiful work. A good friend who is a top machinist did it for me, and I welded it on the inside to reduce distortion. This is my third project bike. The first was an 85 RZ500 Yamaha V4 smoker that I upgraded to inverted forks and a complete R1 rear. I fabbed the rear chambers from stainless with titanium cans and inconel end caps. Don't ask why I just had a bunch of that material laying around at work.

Tha other project is my 99 CR250 with an 01 YZ250 engine, R6 swingarm grafted in, an FZR600 front wheel, and GSXR750 caliper. Waiting on lighting coil at e-line for it. It has a milled head and Rad Valve as far as mods.
Craigus

CR500 4 Ever · Post by **CR500 4 Ever** » December 31st, 2008, 4:10 pm

Should look killer when your done!

BannedCR500Riders.com