OzVMX Forum

Marque Remarks => Suzuki => Topic started by: LWC82PE on September 01, 2014, 09:44:11 pm

Title: RM 250/370 A/B & PE250B fork length
Post by: LWC82PE on September 01, 2014, 09:44:11 pm

can anyone tell me the length that 76/77 RM250/370 forks are
-from centre of axle to top of alloy slider
-from top of slider to top of chrome leg (not inc the actual fork cap)
with forks full extended, no weight on them
Thanks

Title: Re: RM 250/370 A/B fork length
Post by: Davey Crocket on September 02, 2014, 08:36:32 am

From axle to top of slider = 355mm
From top of slider to top of staunchion = 480mm
RM250A Forks
Measured with a Stanley FatMax tape measure.

Title: Re: RM 250/370 A/B fork length
Post by: LWC82PE on September 02, 2014, 08:47:29 am

Well thats a lot shorter than i thought. Only 835mm total length which is shorter than 77 PE250 which i was told was 845mm, so it does not make sense as the PE has less travel. I have also had measurements of around 860 or 865mm for RM too but maybe theirs had a fork kit in it then??. If some other people could check theirs too tat would be great.

76 and 77 RM forks are the same length aren't they?

Title: Re: RM 250/370 A/B fork length
Post by: Davey Crocket on September 02, 2014, 08:54:52 am

I have a 77 PE250B and the fork legs are longer, but they have way less travel, I can measure them tonight. The damper rods are where the travel is lost, I did compare them a few years ago when I put RM125B forks in the PE.

Title: Re: RM 250/370 A/B fork length
Post by: Davey Crocket on September 02, 2014, 08:58:07 am

I think the 77 RM250B type forks had a few mm more travel, they have a different way of the axle retaining....A = screw into fork leg....B = axle goes through fork leg and has a nut on the end.

Title: Re: RM 250/370 A/B fork length
Post by: oldfart on September 02, 2014, 09:42:50 am

let you know this arvo

Title: Re: RM 250/370 A/B fork length
Post by: LWC82PE on September 02, 2014, 01:02:05 pm

I wondered what the difference between A nd B sliders was.

So far i got this info from various people

77 PE250
lower - 346 + upper 476 = 822mm axle to top
lower - 345 + upper 500 = 845mm axle to top (big difference to above though???)

76 RM250
lower - 355 + upper 480 = 835mm axle to top

On paper the PE has 195mm travel and RM 220mm

Title: Re: RM 250/370 A/B fork length
Post by: Nipper on September 02, 2014, 02:49:50 pm

RM 370 A. centre of axle to top of slider = 355mm , top of slider to top of chrome leg = 480mm.

RM 250 B. centre of axle to top of slider =355 mm, top of slider to top of chrome leg = 480mm.

Title: Re: RM 250/370 A/B fork length
Post by: oldfart on September 02, 2014, 04:33:19 pm

Same as I would have supplied ....with respect to nippers post.

Title: Re: RM 250/370 A/B & PE250B fork length
Post by: LWC82PE on September 02, 2014, 05:05:44 pm

Thanks guys. Thats got the RM's sorted so now it would be good to get another answer on PE250B aswell.

Title: Re: RM 250/370 A/B & PE250B fork length
Post by: Davey Crocket on September 03, 2014, 11:35:16 am

PE250B
Fork leg = 345mm
Staunction = 475mm
Was hard to read though.

Title: Re: RM 250/370 A/B & PE250B fork length
Post by: LWC82PE on September 03, 2014, 05:17:12 pm

Thanks Davey. Thats 820mm total. The 822mm measurement i got from a USA friend who measured in inches and fractions and i had to convert to mm so yours is probably more accurate.