Two Stroke Motocross
Two Stroke Motocross Forum => General Two Stroke Talk => Topic started by: dogger315 on July 22, 2011, 04:15:58 PM
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Just finished my CR500 hybrid - 2008 CRF250R frame, 2001 CR500 engine.
70 hp with a broad, useable powerband, works Showas, 212 lb dry weight.
More than a match for any 450F. Next up is a matching CR250 - 2012 CRF
250R frame, 2001 CR250 engine. Enjoy the pictures.
dogger
(http://i246.photobucket.com/albums/gg107/dogger315/CR500077.jpg)
(http://i246.photobucket.com/albums/gg107/dogger315/CR500082.jpg)
(http://i246.photobucket.com/albums/gg107/dogger315/CR500083.jpg)
(http://i246.photobucket.com/albums/gg107/dogger315/CR500881.jpg)
(http://i246.photobucket.com/albums/gg107/dogger315/CR500894.jpg)
(http://i246.photobucket.com/albums/gg107/dogger315/CR500882.jpg)
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That thing is sweet. Nice job
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:o Beautiful. Just beautiful. Words do not do that justice. Almost looks like it'd be a crime to get it dirty, but we don't have to worry about that ;)
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Very nice. ;D
Good work.
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Beautiful for sure! Nice work :D .
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Almost looks like it'd be a crime to get it dirty, but we don't have to worry about that ;)
I was thinking the same thing... It's "almost" too pretty to get dirty...
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When you run up front you don't get dirty!
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Not if you lap the whole field twice! ;D
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Nice work dogger! The bike looks sick & I mean that in a good way! Btw it is almost too pretty to get dirty but like you said it can't get too dirty when your up front....... ;D
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Absolutely magnificent! Your the man dogger :)
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Looks horrible, you need to sell it for like $3,000. Ok, I'll go ahead and take it off your hands. :P
Man, Dogger, I was all happy with how mine looked and you just had to make me re evaluate. That this is a work of art. It is beautiful man. Give us a ride update on handling and everything else. Good job. But I'll stand by my cash offer, any day from now until eternity. Ha ha.
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Yes,that is an amazing job. What issues did you run into during the conversion? You just cannot tell this is a hybrid with you execution!
And most of my "beaters" don't look near as nice ;) :D
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Thanks for the "thumbs up" guys, I really appreciate it.
What issues did you run into during the conversion?
Not too many. This build was a collaboration that brought together some
talented folks. Minor problems like shock spring to engine case clearance,
front fender to exhaust pipe, and relocating the shift lever pinch bolt are
examples that needed to be solved
This was my first attempt at a conversion like this so I decided it would
be wiser to "farm out" the frame modification, especially for a bike with
this kind of speed potential that I intend to race.
I guess the most satisfying aspect of this whole project was the cheap
and plentiful supply of brand new CRF250R parts. The frame, subframe,
swingarm, brakes, plastic, etc., all came from brand new 08 bikes being
parted out right out of the crate by dealers that couldn't sell them.
dogger
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So cool man
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WOW - does anyone have stats on this? How many 250 4T racers that were
built but never sold???
The frame, subframe,
swingarm, brakes, plastic, etc., all came from brand new 08 bikes being
parted out right out of the crate by dealers that couldn't sell them.
dogger
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Looks horrible, you need to sell it for like $3,000. Ok, I'll go ahead and take it off your hands. :P
What are you smoking.... that thing is only worth $1,000... but since I'm a nice guy, I'll take that POS off your hand for $1,500.... :D :D :D
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Nice job...Looks awesome and it will run like a rocket...
RACEPRO USA Inc.
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There could be a real market for parted out 250f's.
Existing owners of the 4 strokes are more often than not looking for replacement engines where as guys like us would love a nice developed modern chassis to slot a real motor in!
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My local dealer parted out three crf250f's and they said they had a bidding war on the frames.
There could be a real market for parted out 250f's.
Existing owners of the 4 strokes are more often than not looking for replacement engines where as guys like us would love a nice developed modern chassis to slot a real motor in!
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There could be a real market for parted out 250f's.
Existing owners of the 4 strokes are more often than not looking for replacement engines where as guys like us would love a nice developed modern chassis to slot a real motor in!
I had the same thought, if i had the skill and money to do it i would start my own business doin just that here in OZ
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Dogger - Is it for you or someone else? Are you racing it? What did you do to the motor (if anything)?
212 lbs is VERY impressive for the weight!
Everyone, so what is a true value of that bike on the open market? Seems like the service honda
models go for 11k plus options?
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Thanks again for the kind words everyone.
There could be a real market for parted out 250f's
I paid $500 for a brand new frame, subframe and swingarm from a
large volume Honda dealer. Those same parts would have cost
three times that under normal circumstances. In all, I probably
saved two or three thousand dollars on new components.
This conversion, combining a CR500 engine with a CRF250 frame is
one of the harder ones to pull off. Using a CRF250 frame and a 250
engine, or any other brand, should be much easier and also appeal
to more people as the four stroke frustration grows.
Is it for you or someone else? Are you racing it?
This one is for me and I can't wait to race it.
What did you do to the motor
I went all out on the motor. I scored an HGA lightweight, close ratio
transmission from an old friend, the crankshaft was balanced by Crank
works, all the rotating internal were Cryo-REM treated, Hinson clutch,
Cylinder and head work by Eric Gorr, VForce 3, Keihin 39.5mm PWK
and a 2001 CR250 ignition with a vortex programmable, switchable
ignition. Below are some pictures of the internals.
212 lbs is VERY impressive for the weight!
Remember that a CRF250R has a dry weight of 204 lbs. and a CRF250
engine is not that much lighter than the CR500 engine due to all the
extra parts. This bike was put on a comprehensive titanium diet: Fork
and shock springs, all engine bolts, linkage bolts, all fasteners, footpegs,
axles and even the brake caliper pistons. The light weight transmission
and CR250 rotor saves even more and lessens the "flywheel" effect
which helps the bike change direction easier.
dogger
(http://i246.photobucket.com/albums/gg107/dogger315/500080.jpg)
(http://i246.photobucket.com/albums/gg107/dogger315/CR50014.jpg)
(http://i246.photobucket.com/albums/gg107/dogger315/500topend027.jpg)
(http://i246.photobucket.com/albums/gg107/dogger315/500EngineFinal5-1.jpg)
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Wow. Definietly easy on the eyes. Can't wait to see the race vids. Excellent work.
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Where did you buy the titanium fork springs from? I've seen a lot of people offering the rear shock, but not forks. Very nice build, if I had the money I'd love to put a Gorr-built 300 into a modern 250F frame.
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drool drool......
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VERY SHARP 500, the yellow really pops with the red. I only saw 1 250f frame with a 125 engine, I wonder why that is ?