Recent Posts

Pages: [1] 2 3 ... 10
1
Tech Section / Re: How To Modify Side Case For Oil Cooler...
« Last post by triguyracer on November 23, 2020, 04:38:22 pm »
I would think that it being a roller bearing crankshaft instead of a plain bearing type that your oil pressure might read lower than you think it should when you are able to check it without knowing what the factory calls for , I use 20'50 Valvoline race oil , I live where it gets pretty hot for 3 to 4 months ,like hundred plus for days on end ,don;t ride much in the real hot weather but have had good luck with said oil which I use in my race bikes also just a diff weight. just change it a lot and the filter seems to work well. Now off subject does anyone have info on fixing the speedo , mine broke about 3 months ago like it to able to keep it reading close to the actual miles which was just under 8000 a few months back when it broke.   
2
Tech Section / Re: How To Modify Side Case For Oil Cooler...
« Last post by murdo on November 23, 2020, 03:24:06 am »
I have scoured the workshop manual and other internet sources and none can tell me what pressure these engines run. Will just have to fit a gauge one day and see for myself.
3
The Thumper Years: Modified To Full Customs / Re: FT500 Vintage racer
« Last post by hellblom on November 22, 2020, 12:44:02 pm »
Nice, which model of the progressive springs was it?
4
The Thumper Years: Modified To Full Customs / Re: FT500 Vintage racer
« Last post by FT500R on November 17, 2020, 09:46:43 am »
Fitted the hagon progressive fork springs today.
These replace the original spring, washer and spacer.
Problem was that I had shortened the spacer to make room for the PD-valves (about 20mm).
I can't just shorten the progressive springs so I fitted them as is, I do have quite a lot of spring pre-load now (about 37mm) but statically the forks feel great and not harsh at all.
5
The Thumper Years: Modified To Full Customs / Re: FT500 Vintage racer
« Last post by FT500R on November 15, 2020, 05:06:52 am »
When racing I have to remove the side and center stand, which means that parking the bike is a bit difficult.
To make it a lot easier to prop the bike up I welded 2 long nuts on the rear swing arm to fit paddock stand bobbins.

The Hagon shocks I bought are a bit longer than the orignals (was recommended this by someone who races FT500s). The bike looks pretty sweet with the shocks installed.
I also made a muffler support from a strip of aluminium. Might add some speedholes in it to add lightness ;)
6
The Thumper Years: Modified To Full Customs / Re: FT500 Vintage racer
« Last post by FT500R on November 12, 2020, 08:05:05 am »
Christmas was early this year (or Sinterklaas which we celebrate in the Netherlands).
Just got my Hagon shocks and fork springs.
I went to the importer of Hagon shocks here in the Netherlands to discuss which type would be best for my situation and instead of the more expensive adjustable 2810 series they actually recommended the 'standard' shocks as these have progressive damping.
This progressive damping various according to the sharpness of the shocks and with that would be more optimal than a set damping that will always dampen the same way.
I did get springs specifically for my own weight, the bike and the racing I will be doing with it.
Together with the progressive fork springs and the YSS PD-valves this should give a much improved ride.

Hope to install everything this weekend.
7
The Thumper Years: Modified To Full Customs / Re: FT500 Vintage racer
« Last post by FT500R on November 06, 2020, 04:28:46 am »
Thanks.
I indeed used a similar tool. Works like a charm and you don't have to drop the valves in or turn the forks upside down to get them out.

I just ordered new shocks and progressive fork springs so the whole suspension should be sorted.
8
The Thumper Years: Modified To Full Customs / Re: FT500 Vintage racer
« Last post by patrino on November 04, 2020, 06:55:44 pm »
Looking good - thanks for the update!

I reckon you'll like the cartridge emulators.  I'm a big fan - for the last ten years or so I've been running them (RaceTech's version) in all my vintage bikes.

You may already have figured this, but in case you need to adjust the emulators, a tool like this is helpful to grab them from the top of the damping rod:  https://www.homedepot.com/p/GrabEasy-24-in-Flexible-4-Claw-Pick-Up-Tool-Jewelry-Retriever-Clog-Remover-Drain-Snake-in-Chrome-PF0401/202505170
9
The Thumper Years: Modified To Full Customs / Re: FT500 Vintage racer
« Last post by FT500R on October 26, 2020, 11:25:06 am »
Got the PD-valves in the mail this weekend and installed them.
Really clever little things.
You put them in your forks between the damper rod and the spring.
The spring preload of the little valve controlles the amount of oil that can flow when the forks compress, with that it controlles the compression damping.
Rebound is still controlled with the oil viscoscity.
I've set the valves on 3 turns preload (out of 7) for now. The forks still feel a bit soft but this could also be due to the relatively weak standard fork springs.
I had to shorten the fork spacer with 14mm (thickness of the PD-valves) to keep normal pre-load on the fork springs.
I'll keep them like this for now, changing the pre-load on the PD-valves is relatively easy so I can dail them in further when I get to test ride the bike a bit (you do have to 'open up' the forks by removing the top cap, spacer and springs).

10
The V-Twin Years: Stock To Lightly Modified / Re: krtt styled ascot build
« Last post by veetee500 on October 17, 2020, 05:32:27 am »
 :)
Pages: [1] 2 3 ... 10