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Good looking bike, good value twinshock I'd say....one just sold up the road for £1500, clean but needing a few small jobs.
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good thinking, great idea....also would cure a slight interference issue with the cable I already have.
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I'm sure you are correct..
.....but you know when someone pops their head over ya shoulder and plants a seed of doubt even though you damn well....
thanks for that, for a moment earlier today the universal lever law was in questuon!
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My SWM has had it's footrest moved down and back thus making the rear brake pedal position a bit off for one with smaller feet...needs to be further back and lower to be ideal...cut and shut would be too easy.
Now the rear brake pedal acts a class 1 beam lever....load-fulcrum-effort, so if I shorten my lever this means I will loose some mechanical advantage, not good.
I should know the answer to this question but here goes....
....if I call the original 'effort-pedal-foot-touch' point 'A' and weld a strip of metal to this original point but below & at an angle of 45' and at a point 2" further back in the direction of the rear wheel & call this position B, would the 'effort-pedal-foot-touch' point of the lever now be at this new shorter B point or the original further forward point A?
or other words the foot now press's down 2" further back but acts as if it was 2" further forward by acting as if it was still in the original position...hope that makes sense....I've read and reread this a few times and its hard to put into words without a drawing.
I think the effort would act as if it's still acting on a shorter lever thereby still reducing my mechanical advantage as the effort acts as if it goes thru the beam not on the end of the beam but have to check my physics
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As a 51 year old rider new 'ish to the sport my advice would be to buy a later generation 250 2 stroke...by that I mean 1998'ish onwards...liquid cooled mono for a grand.
They are all good, far better than most riders, easier to ride and plentiful. 250'S aren't a handful and in many circumstances they are more forgiving than a 200 125etc.
If you decide its not for you or wish to change for newer or twinshock you will find it easy to sell on. I sold my Beta REV3 '02 recently for a grand in a few hours and could of sold it 20 times over.
I suppose what I'm really saying is make it easy on yourself to get back into trials.
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Cheers, I'll put them to obe side...may need them depending on Turkey consumption!
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I've got a copy of the US (I think!) importers user manual that came with my Speedy, sort of real world set-up guide. It's not much, a few pages but does a decent job of describing some of the maintenance jobs and set up from actual useage. Quite amusing in places too.
If anyone wants a copy I'll scan and post to site.....if I can work my new fangled printer/copier from hell...it means I may need to read the 'destructions' and for a man this will be the ultimate embarassment!
Seasons greetings, see you at Butley and the Dabbers.
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Would anyone know what the original handlebar rise would of been when these Speedies were sold new....just curious.
cheers
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Looked into my shock mounts and yes stiff as a pornstars....well you know the rest.
Removed and greased the rubber bushes, spaced out the large washers with small spacing washers and action now much plusher.
.....with result that I'm back on the 50lb springs! Free sag and 'race' sag spot on. Took her for a ride today and riding over tractor tyres she is close but not botttoming out.
thanks for the great tips, help and advice.
PS pair of 3 hour 40lb/in springs going tweet!
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Cheers guys, thanks for the advice
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Whoops....forgot to add, I have raised my forks in the yokes around 15mm. I may have another 5mm left before interference with handlebar bottoms.
cheers guys
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Hi guys, bit of back ground first...
now I'm actually doing some trials with my SWM TL320 I have been playing with suspension. But coming from enduro's I've come to the conclusion that I may be out of my water a little?
She has Magicals springs up front and Sammy Miller gassers up the blunt end. When she came to me the front and rear were set up for a erm' heavier rider (well built Steve, all muscle!) with 50lbs/in rear springs and 135mm of preload in the front springs, I weigh 11 stone. I had very little front and rear sag. First trial I just rode her as was. She rode very high too, I could of rolled over a 45 gallon drum without scraping the bashplate!
Since the first trials I've reduced the front preload spacers by 25mm and this gives me around 2" front sag and a very nice progressive front end.
The rear springs were on the middle pre-load position and I dropped this to the lowest and got a little bit of sag but still felt hard and lifeless compared to my Beta REV3 which felt lovely, compliant, progressive and soft. I also had an issue with the shocks 'binding' on the shock top mount due to powder coating and this made the action stiff too, removing the powder coat made them a lot better....not sure why as the movement should be on the rubber bush shouldn't it?
I bought a pair of SM 40lb/in springs and set the sag to around 1/3 rear end travel (3rd stop on preload) using the MK eyeball and a cable tie method, felt lovely, plush and soft. I left tell-tale cable ties on the front and rear. Bouncing her up and down as hard as I could in my unit I could get the rear end to be around 3/4" off the shock bump stop and thought thats fine.
Did a trial yesterday and she felt much better all round, front much more planted, rear end working, still a bugger on climbs though with a light front end....most of which could be my poor body positioning. The trial wasn't very difficult per se but a good mix of hard/soft climbs and drops. During the lunch brake and I looked at my 'tell tail' cable ties and the rear end was up to the bump stop and the front was high too but not 'blown-thru', all of which alarmed me somewhat...I hadn't been jumping or getting air!
Got home and found the rear springs had sort of 'run themselves in' and now I had to raise to top setting on preload to get my 1/3 total movement sag, this is LOT of pre-load...I think, but if it's adjustable why not use it?
Now, in the above I'm assumed quite a lot, taken a few guesses too so I would like to ask if I'm 'getting there' or 'out to lunch' on twinshock suspension.
So my questions are:
1/ If I'm using all my suspension movement this could be a good thing....its there to be used...one could assume?
2/ Should twinshock trials bikes be very soft like my old Beta REV3, she felt lovely to me and bouncing her up and down helped me balance...in between putting my feet down
3/ Is a softer spring with more preload worse than a harder spring with a lot less preload?....I know that the spring rate isn't changed by preload on a straight rate spring but the SM springs look very progressive, so I could be getting a harsher ride with the softer springs than the hard springs, as I'm getting off the softer part of the spring onto the stiffer part..are you with me?
4/ The shocks on a SWM are slanted over (to me) and this would reduce the spring rate of the rear spring...but they aren't slanted over like a Gripper!
I have two bottom mount positions on my SWM swing arm and I've have been using the mounts nearer the end of the bike to get the ride height down a little by introducing a tad more slant..only makes 1/2" difference but all helps....Martin 'SWM' M tells me that the front mount is the std position and the rear mounts were for when the pillion mounts were used thereby giving a little room for the rear shocks but I thought I'd experiment...it was all I could do to drop my trans oil in my Beta, aren't twin shocks addictive
Seasons greeting and thanks for any help
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Was just the linings needing bedding in....ran her around dragging the brake for 10 mins (thats quite some time to be doing nothing else!) and works 100% now...can lock her on dry tarmac sitting down but progressive too, just as good as any rear disc Ive had.
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Anyone know what the difference is between the standard handlebar and the Dougie Lampkin bend version?
....were the Lampkin bend handlebars always a dark metallic grey?
thanks as always
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Did a trial yesterday...and typically there were three Beamish's riding!....ya know bit like buses...
...one was a MK1 in amazing condition and looked stunning in silver and red , one yellow/black tank and one all yellow.
I entered into the twinshock ritual of trying everyones clutch pull and even though one had an Apico Easy Clutch the std mk1 was the best...could be down to maintainace and wear and tear? I had a 76' GT250A and that had a woeful clutch action ended up being ever so slightly bent clutch pushrods and I do mean slightly!
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I've no idea...anyone know?
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...because I have always had a real softspot for them, always found them a good looking bike , have always liked Suzuki engineering and owned more than a few zooks...I like to add one to my fleet, look good sitting beside my GSXR-750WN.
...but looking at prices over the last few months tbey seem to be bit of a bargain compared to other twinshocks....what dont I know?
There always used to be a fair few doing the rounds in Kent back the day...Cliffe Marshes etc.
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My SWM has a working decompresser, so far I've been using it as an aid when kicking starting her by engaging whilst kicking thereby making life much easier, also I kick her thru whilst operating the decompressor to prime her when cold, and lastly to stop her.
Now I'm fairly sure the decompressor is also there to help on hill decents but I'm not sure why, when and how to use, be grateful for advice.
cheers as always for any help
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Ran the bike around yesterday in my woods and its great, lovely super grunty engine that will plonk along at incredibly low revs. Brakes are good now they have bedded in and set up with help from this forum.
She's rides tight, light and bright, quick steering but stable too, Starts first kick after priming her on the decompressor.
She doesnt feel her 34 years old. Rear suspension is very stiff indeed though after my Beta REV3. She has Sammy Miller gas shocks on 50lb springs which may need changing to 40lb springs or less!
Clutch is light but to erradicate all drag Ive no adjustment left on my cable....whats the form on setting up the clutch adjuster screw and should it have a locknut? Mine feels like its an interference thread like..erm a Ford Essex/Endura Ka engine tappet adjuster?
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Yup thats me....but how did they know?
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Gaunaco is a peruvian laama type animal, but what does the TL NW mean in the name?
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http://pages.ebay.com/link/?nav=item.view&id=261558150948&alt=web
perfect fit!
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Thanks for that...nice fittings!
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