Author Topic: RaceTech emulators and 750 sohc 35 mm forks.  (Read 1513 times)

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Offline Dion

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RaceTech emulators and 750 sohc 35 mm forks.
« on: October 27, 2013, 03:42:14 AM »
RaceTech emulators and 750 sohc 35 mm forks. Hi chaps, I need a bit of advice. Busy building my front forks using RaceTech emulators and springs. I think that I have all the parts in the correct place. Does the spring make direct contact with the emulator or should there be a thin washer in between ?  I attached a pic for u to look at. In connection with the fork oil seals, am I correct in stating that the seal number should face out wards as in the pic. In other words the seals lips face inwards to to fork.  How do I set up the emulator for Race Track use? Thanks for the help.

Offline bwaller

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Re: RaceTech emulators and 750 sohc 35 mm forks.
« Reply #1 on: October 27, 2013, 06:42:06 AM »
The seal should be installed as shown (that side up). The fork spring directly contacts the emulator.

Mind you these settings are for 750F3 forks on a lighter CB550, but some information for you to start. I have the smaller diameter RT springs, so use 40 in/lb emulator springs & 3 turns because there wasn't the 4mm clearance they ask for between emulator valve plate OD and spring ID. I have .85kg fork springs, and limit travel to 115mm with a damper rod spacer under the top out spring with 1 rebound hole. I use 15W oil @ 175mm. Preload is 32mm and sag is +-28%.

Offline Howell

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Re: RaceTech emulators and 750 sohc 35 mm forks.
« Reply #2 on: October 27, 2013, 01:58:29 PM »
A few years ago I updated my CB750F2 fork with those emulators, see this forum (dutch)
http://www.motor-forum.nl/forum/list_messages/214047/0/0/race,tech,emulators
I didn't use spacers, spring direct on the emulator.
To find a good setting of the emulator you have to adjust the hexagonal socket bolt.

http://racetech.com/html_files/DampingRodForks.HTML
« Last Edit: October 27, 2013, 02:06:29 PM by Howell »
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