Author Topic: TRX250R Motor in a TRX450R Chassis (Read 34536 times)

Langbolt · « **on:** December 09, 2014, 12:55:04 PM »

Well, I did my research and planned out my methods.....And this is what I've come up with so far.....Hope it helps any that are on the fence about a Hybrid like this. The WHOLE purpose to this Hybrid is to use as MANY 450R parts as possible because they are so readily available.

Langbolt · « **Reply #1 on:** December 09, 2014, 01:01:53 PM »

The Radiator from the 450R is 3 inches taller.....so I had to use the 250R radiator to get the pipe to clear. I don't want to have to make custom pipes.....Trying to make this as EASY as possible. As you can see the Motor sits a wee bit high when using the '86-87 standard motor bracket....but it's OK....it's just gonna require some long lower engine brackets. I've supported the rear upper shock mount with 0.120" wall tubing so it'll be strong enough. I'll have to make some mounts for the Radiator....but it's going rather well.

The_Steve_Man · « **Reply #2 on:** December 09, 2014, 02:04:10 PM »

Thats cool. If I were a quad guy, that is something I may do.

hickwheeler · « **Reply #3 on:** December 09, 2014, 02:35:30 PM »

nice work, will like to see the finished bike

muthahucker · « **Reply #4 on:** December 09, 2014, 08:49:43 PM »

When are you going to have this on the trails?

Langbolt · « **Reply #5 on:** December 09, 2014, 10:21:53 PM »

Quote from: muthahucker;47395

When are you going to have this on the trails?

If all goes well......this coming spring.

....you might see it in action.

Flyin_250r · « **Reply #6 on:** December 10, 2014, 06:05:06 AM »

I wanna see that laeger in action!

bkstoffe · « **Reply #7 on:** December 10, 2014, 03:23:36 PM »

Great project!
How does the weight compare between the R chassis and trx?

Langbolt · « **Reply #8 on:** December 10, 2014, 04:21:30 PM »

Quote from: bkstoffe;47457

Great project!
How does the weight compare between the R chassis and trx?

I didn't weigh my 250R frame......but I did weigh the 450R.....it came in at 34.5lbs!

Langbolt · « **Reply #9 on:** December 10, 2014, 04:22:19 PM »

Quote from: Flyin_250r;47417

I wanna see that laeger in action!

Sure Craig! You'll just have to come to the Ganaraska Forest on a SUNDAY

Flyin_250r · « **Reply #10 on:** December 10, 2014, 06:14:30 PM »

I'm in. I'm hoping to have a xc R by spring. A buddy of mine has been dying to go there to ride. He's for a cr though lol

Langbolt · « **Reply #11 on:** December 15, 2014, 12:51:42 PM »

Made some more progress in the Garage. Well, I'm back to the 450R radiator - when I put the plastics on the rad pushed the plastics outwards - The 250R rad is wider than the 450R. Now the Pipe hits the bottom of the rad.....So it's either Modify the Header of the pipe....Or use a Different Rad (short like the 250R and narrow like the 450R....but the surface area might be too small) Once I get the front end buttoned up i'll get a better handle on whether or not the 250R rad might still work. I can't believe how many brackets are required to get the front fenders on.....and of course I don't have ANY of them! LOL

Brian · « **Reply #12 on:** December 15, 2014, 04:23:26 PM »

Sweet man, very nice work.

Iceracer · « **Reply #13 on:** December 15, 2014, 08:20:54 PM »

I had one made for my 150, just shortened up height to fit frame. About 200 bucks if your interested I can give you the email. The place is out of China.

Langbolt · « **Reply #14 on:** December 15, 2014, 11:01:54 PM »

Quote from: Iceracer;47693

I had one made for my 150, just shortened up height to fit frame. About 200 bucks if your interested I can give you the email. The place is out of China.

Thanks Iceracer, I might be OK with the 250R rad as it is only 1" wider.......I just want to make sure the plastics can flex 1/2" each side.....I won't know till I get the front brackets to mount the front fenders properly.

How long did it take you to get the Radiator from China ? I think I've seen those on E-bay.....Thanks