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Baxter
10-23-2006, 07:11 AM
What would be the ultimate hybrid for motocross ?
All suggestions please.:devil:

10-23-2006, 07:31 AM
Originally posted by Baxter
What would be the ultimate hybrid for motocross ?
All suggestions please.:devil:


A 400ex with a ktm 450 motor

gtilley45
10-23-2006, 11:03 AM
If you aren't worried about having to run the open classes, I'd say a Walsh/KTM 520. There's some pics of one around here somewhere but I can't find it.

frank mb
10-23-2006, 11:18 AM
Walsh with ktm 560 SMR engine with a 630 engine kit on it.

nightmare311
10-23-2006, 12:35 PM
i got a 400ex/ktm450 hybrid this thing hauls... i can smoke the trx's,ltr's,and yfz's down the straights.... no problem.... its just weird jumping 60 to 70' in 2nd...

nightmare311
10-23-2006, 12:38 PM
i found a pic of a 520 ktm 400ex hybrid

Baxter
10-24-2006, 04:33 AM
Who did the frame conversion on the 400ex/ktm520 and did it take alot of work?
Is 250r best geomentry to go for in motocross or is the 400ex similar ?

gtilley45
10-24-2006, 05:41 AM
The 400EX and 250R are similar. But personally, I think the 250R has better geometry but at the same time I think it's a little harder got get a motor like that in it. Unless you have the money to buy an aftermarket 250R frame made for the motor you want to use.

nightmare311
10-24-2006, 06:38 AM
the 400ex frames are bigger there for a little easier to install the hybrid motors...

Baxter
10-24-2006, 07:29 AM
Does anyone do a chassis so you can fit trx450r parts on.
The reason I ask is a secondhand trx450r will only cost about £500 more than a secondhand 400ex plus I have lots of 450r spare parts.

gtilley45
10-24-2006, 10:52 AM
The only TRX450R parts I've seen used on hybrids is the spindles, hubs, rotors, calipers and front master cylinder. As soon as I get the money, I'm gonna go with this setup on my 250R hybrid. The 450R spindles are supposed to be a good bit stronger as well as being lighter.

Baxter
10-24-2006, 12:17 PM
I am trying to decide wether a CRF490 or KTM520 into 450R chassis.Thought about trx535 kit but would cost £3500 in parts.

nightmare311
10-24-2006, 12:18 PM
ktm520...

Baxter
10-24-2006, 12:21 PM
SX or EXC

nightmare311
10-24-2006, 12:22 PM
well how many gears do u want sx has 4 exc has 6 i havent got my 450 above 3rd..

Baxter
10-24-2006, 12:27 PM
4 I think would be enough.Just put bid on 06 frame to start project .Thanks nightmare311.:devil:

nightmare311
10-24-2006, 12:32 PM
well if i can help anymore let me know or hit me up on myspace..

myspace.com/311nightmare

MX450
10-25-2006, 08:57 AM
Laeger or Walsh 250R gemometry CRF

Ripitupfilms
10-26-2006, 08:07 AM
walsh/axis yz450f 250r geo

Ruby Soho
10-28-2006, 01:58 PM
Tecate 4 engine in a 450 chassis:D

haha, i doubt that would work, and it would be hard to find parts for the engine

Kansas400ex
10-29-2006, 10:41 AM
so where do you find the KTM 520, or other dirtbike engines for sale without buying a whole dirtbike?

HouserCRF450
10-30-2006, 10:11 AM
laeger pro trax cr500 link, pep ti piggybacks, crf motor with falicon 530 kit :muscle:

KingpinsEx
10-31-2006, 12:09 PM
Originally posted by Kansas400ex
so where do you find the KTM 520, or other dirtbike engines for sale without buying a whole dirtbike?

Ebay or atv/dirtbike salvage places....

Yamahauler_04
11-01-2006, 05:17 PM
Originally posted by Ruby Soho
Tecate 4 engine in a 450 chassis:D

haha, i doubt that would work, and it would be hard to find parts for the engine

Not as much as a XR650 in a Blaster frame :)

TANNER250r
11-01-2006, 05:59 PM
250r/cr500 would be fun to make:devil:

cbr
11-02-2006, 03:39 PM
i seen a 250r with a cr 500 motor in it, and it was bad arse! he was a trail rider but he put like 20g in it.

Yamahauler_04
11-08-2006, 03:41 PM
Originally posted by TANNER250r
250r/cr500 would be fun to make:devil:

And then sell.

Rode one. The motor vibrates so bad your hands go numb in 15 minutes.

It also loved to vibrate until welds craked.

But it was fast.