« previous next »
Pages: [1] 2 3 ... 5   Go Down

Author Topic: Ohlins upside down forks  (Read 22051 times)

0 Members and 1 Guest are viewing this topic.

Offline KTM47

  • Legend
  • *****
  • Posts: 1412
    • View Profile
Ohlins upside down forks
« on: August 14, 2014, 10:31:20 am »
Does anyone know when Ohlins upside down forks were first made for MX?
Logged
MAICOS RULE DESPITE THE FOOLS

1999 KTM 200, 1976/77 KTM 400,1981 Maico 490

Offline Slakewell

  • Legend
  • *****
  • Posts: 3577
  • Slakewell Motordrome
    • View Profile
Re: Ohlins upside down forks
« Reply #1 on: August 14, 2014, 10:49:13 am »
No but I have some
Logged
Current bikes. KTM MC 250 77 Husky CR 360 77, Husky 82 420 Auto Bitsa XR 200 project. Dont need a pickle just need to ride my motorcickle

Offline ola_martin

  • Legend
  • *****
  • Posts: 509
    • View Profile
Re: Ohlins upside down forks
« Reply #2 on: August 14, 2014, 01:37:12 pm »
Mid 80's.
Logged

Offline evo550

  • Legend
  • *****
  • Posts: 2435
    • View Profile
Re: Ohlins upside down forks
« Reply #3 on: August 14, 2014, 08:45:27 pm »
Quote from: ola_martin on August 14, 2014, 01:37:12 pm
Mid 80's.
First time I ever seen them was early 90's on a Craig Dack bike, I remember an interview where he commented on the cost of his Ohlins suspension, where he said he would ride on broom sticks and Yamaha could just give him the money they spent on the forks....obviously worth more than his salary...
Logged

Offline LWC82PE

  • Superstar
  • ******
  • Posts: 6006
    • View Profile
    • PE motorcycles & SuzukiTS.com
Re: Ohlins upside down forks
« Reply #4 on: August 14, 2014, 09:32:15 pm »
Logged
Wanted - 1978 TS185 frame or frame&motor. Frame # TS1852-24007 up to TS1852-39022

Offline KTM47

  • Legend
  • *****
  • Posts: 1412
    • View Profile
Re: Ohlins upside down forks
« Reply #5 on: August 15, 2014, 08:50:24 am »
It would appear, that based on info in the mxtrax forum, Ohlins USD forks were used on works bikes in the mid 80s.  The question now is when were the Ohlins forks with external compression and rebound adjusters available.  I have now seen two Pre 90 bikes with Ohlins USD forks on them.  Are they legal? 

Please remember it is up to the entrant of the bike to prove it is legal.   

Also apparently this has already been discussed previously on this forum.  Can anyone find that thread.
Logged
MAICOS RULE DESPITE THE FOOLS

1999 KTM 200, 1976/77 KTM 400,1981 Maico 490

Offline Slakewell

  • Legend
  • *****
  • Posts: 3577
  • Slakewell Motordrome
    • View Profile
Re: Ohlins upside down forks
« Reply #6 on: August 15, 2014, 09:04:37 am »
When the first YZ 400 came out we did some back to back testing with a Ohlins bike and a standard bike. Back then the forks and shock cost about the same as the bike. With the same rider and tyres on both bikes they seem to average about 2.5 sec a lap faster on the Ohlins bike.
Logged
Current bikes. KTM MC 250 77 Husky CR 360 77, Husky 82 420 Auto Bitsa XR 200 project. Dont need a pickle just need to ride my motorcickle

Offline evo550

  • Legend
  • *****
  • Posts: 2435
    • View Profile
Re: Ohlins upside down forks
« Reply #7 on: August 15, 2014, 10:34:18 am »
Quote from: KTM47 on August 15, 2014, 08:50:24 am
It would appear, that based on info in the mxtrax forum, Ohlins USD forks were used on works bikes in the mid 80s.  The question now is when were the Ohlins forks with external compression and rebound adjusters available.  I have now seen two Pre 90 bikes with Ohlins USD forks on them.  Are they legal? 

Please remember it is up to the entrant of the bike to prove it is legal.   

Also apparently this has already been discussed previously on this forum.  Can anyone find that thread.
Oh no not another illegal fork debate... ;)
I doubt they would be pre 90 legal, besides KTM, USD forks only became mainstream production units in '89. WP yes, Ohlins...Hmmm bit sketchy.
Logged

Offline motomaniac

  • Legend
  • *****
  • Posts: 2448
    • View Profile
Re: Ohlins upside down forks
« Reply #8 on: August 15, 2014, 12:01:15 pm »
Google Hakan Carlqvist image's . You will see his Yamaha YZM with ohlins USD forks. He retired in 88 and had one maybe two years on Kawasaki after Yamaha. So do your own maths.
Logged

Offline ola_martin

  • Legend
  • *****
  • Posts: 509
    • View Profile
Re: Ohlins upside down forks
« Reply #9 on: August 15, 2014, 03:06:50 pm »
The old USD's on Carla's works Yamaha and Kurt Ljungqvist?  works Husky 500, around 84/5/6 where blue, and different to the gold 46mm USD wich came out in -98.

In between there was a conventional type wich I think came out in the early 90's.

I can see if I can get accurate years.
Logged

Offline ola_martin

  • Legend
  • *****
  • Posts: 509
    • View Profile
Re: Ohlins upside down forks
« Reply #10 on: August 15, 2014, 06:44:12 pm »
Confirmed from Öhlins tech.

The old blue 43mm USD, made 83-85.
Only made for Carlqvist factory yamaha, also used on Lungqvist factory Husky.
Never for market sale.

Conventional 50mm, made 93-97, for open market.
(very expencive)

46mm gold USD, for sale from -98.
Logged

Offline evo550

  • Legend
  • *****
  • Posts: 2435
    • View Profile
Re: Ohlins upside down forks
« Reply #11 on: August 15, 2014, 07:36:53 pm »
Quote from: motomaniac on August 15, 2014, 12:01:15 pm
Google Hakan Carlqvist image's . You will see his Yamaha YZM with ohlins USD forks. He retired in 88 and had one maybe two years on Kawasaki after Yamaha. So do your own maths.
Yeah, I've seen them, but they where one off factory items, so unless the forks  KTM47 saw on the two yz's where those actual forks then they aren't pre '90 legal. How's that maths..
Logged

Offline KTM47

  • Legend
  • *****
  • Posts: 1412
    • View Profile
Re: Ohlins upside down forks
« Reply #12 on: August 16, 2014, 08:42:40 am »
The forks I saw were on a 89 CR 500 and in a photo I found somewhere of a rider on an 89 YZ 250 (with a 360 kit).

Anyway the forks I saw looked like the forks that were on a bike I just sold.  It was a 2000 RWJ (semi works) CR500.  So in my opinion if anyone is using these forks (or the conventional forks) they should be considered illegal.  Only the forks used a works bike from the era could be legal.  I know of only one such bike in Australia and it is unlikely to ever be raced.

Anyway if I see the bike again I will protest (unless I am the scrutineer, which won't need a protest).
Logged
MAICOS RULE DESPITE THE FOOLS

1999 KTM 200, 1976/77 KTM 400,1981 Maico 490

Offline 211

  • A-Grade
  • ****
  • Posts: 340
    • View Profile
Re: Ohlins upside down forks
« Reply #13 on: August 16, 2014, 02:42:47 pm »
Kevin
I agree with you and suggest that if you have then on a bike you need to be in a position to provide proof that they were available pre 90 and the ones you have were in fact the ones available.
I can here it at the next Nationals - "but they were Ok at the last race meeting I went to"  :'(
211
Logged

Offline ola_martin

  • Legend
  • *****
  • Posts: 509
    • View Profile
Re: Ohlins upside down forks
« Reply #14 on: August 16, 2014, 04:23:45 pm »
Just measure, the old factory ones is 43, the 98 ones is 46mm
Logged
Pages: [1] 2 3 ... 5   Go Up
« previous next »