Author Topic: 78-80 CR250 Fork Mods  (Read 4835 times)

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Offline Tahitian_Red

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78-80 CR250 Fork Mods
« on: January 14, 2016, 06:00:01 am »
What are the best modification for the 78-80 Honda CR250 forks? 

Can they be converted to work with emulators?
The "Factory Novice"
California, USA

'74 Suzuki TM100, '75 Bultaco 250 Pursang, '77 Honda XR75, '77 Suzuki RM125B, '77 Yamaha YZ400D, '79 Honda CR250RZ Moto-X Fox Replica, '83 Honda ME480RD Mugen

Offline smed

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Re: 78-80 CR250 Fork Mods
« Reply #1 on: January 14, 2016, 07:11:32 am »
Swap em out for a set of 43mm jobs from a later model ;)

Offline Tahitian_Red

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Re: 78-80 CR250 Fork Mods
« Reply #2 on: January 14, 2016, 07:38:39 am »
That was my first thought, but reading articles on how Bob Hannah raced "showroom" bikes during the 1977 Supercross season and then Team Honda did the same during the 1978 season, I thought maybe I would put modified stock forks (have a really nice set) on the bike and race it like that.
:-)
The "Factory Novice"
California, USA

'74 Suzuki TM100, '75 Bultaco 250 Pursang, '77 Honda XR75, '77 Suzuki RM125B, '77 Yamaha YZ400D, '79 Honda CR250RZ Moto-X Fox Replica, '83 Honda ME480RD Mugen

Offline Rossvickicampbell

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Re: 78-80 CR250 Fork Mods
« Reply #3 on: January 14, 2016, 12:29:09 pm »
doesn't have to be a later model - Fox Forx?????
1974 Yamaha YZ360B
1980 Honda CR250R - Moto X Fox Replica

Offline bigk

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Re: 78-80 CR250 Fork Mods
« Reply #4 on: January 14, 2016, 07:04:07 pm »
They are cartridge forks & not to bad although 1980 RA are a tad nicer. I'm not sure how many everyday/non expert riders would actually notice any flex from the 37mm tubes? I doubt I would.
K

Offline Tahitian_Red

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Re: 78-80 CR250 Fork Mods
« Reply #5 on: January 15, 2016, 01:33:30 pm »
They are cartridge forks & not to bad although 1980 RA are a tad nicer. I'm not sure how many everyday/non expert riders would actually notice any flex from the 37mm tubes? I doubt I would.
K

At one of our events a few years back I couldn't get my CR480 started and the gate was about to drop.  A buddy of mine was pitted right by the starting gate and handed me his running '79 CR250.  I jumped on and just made the start.  It felt really nice and I finished well in the 40+ class.  I looked the bike over after returning it to his pit and it had standard forks (rebuilt with proper rate springs) and the stock swingarm with a set of Progressive shocks on the back.  I think I went just as fast as I have ever gone on my '79 Moto-X Fox replica CR250.

As you said K, I just do not go fast enough to feel the flex. :-(

Can these cartridge forks be converted to normal damper rods with emulators?  Anyone know of a conversion like this?
« Last Edit: January 15, 2016, 01:40:44 pm by Tahitian_Red »
The "Factory Novice"
California, USA

'74 Suzuki TM100, '75 Bultaco 250 Pursang, '77 Honda XR75, '77 Suzuki RM125B, '77 Yamaha YZ400D, '79 Honda CR250RZ Moto-X Fox Replica, '83 Honda ME480RD Mugen

Offline tony27

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Re: 78-80 CR250 Fork Mods
« Reply #6 on: January 15, 2016, 02:09:14 pm »
I thought emulators were for making damper rod forks behave like cartridge forks so wouldn't that be a backwards step to end up in the same place?

Offline Tahitian_Red

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Re: 78-80 CR250 Fork Mods
« Reply #7 on: January 16, 2016, 03:34:04 am »
These first generation cartridge forks are not like the late 1980's cartridge forks (which emulators are meant to "emulate").  That's why they went back to damper rod forks in 1981-85.
The "Factory Novice"
California, USA

'74 Suzuki TM100, '75 Bultaco 250 Pursang, '77 Honda XR75, '77 Suzuki RM125B, '77 Yamaha YZ400D, '79 Honda CR250RZ Moto-X Fox Replica, '83 Honda ME480RD Mugen