SF1 / 2

T

tyelav13

Hero member
Location
Wales (gods own country)
A friend of mine is fancying a 750 sf1 or preferably 2. Anything about UK based? He will probably be looking in a few weeks time and wants something complete, good condition and good working order. What have you got and how much lads?
 
big difference between the SF1 and SF2 is that with the 2 you can actually stop and the Jap switches are way above the "prince of darkness" Lucas items found on the SF1. The drum brakes on the SF1 were great from around 90MPH right down to about 10MPH and then they would apear to have a hidden system that greases the linings. crashing into the tail lift of a lorry at 10MPH is not fun, ask me how I know!
CLEM
 
CLEMTOG said:
big difference between the SF1 and SF2 is that with the 2 you can actually stop and the Jap switches are way above the "prince of darkness" Lucas items found on the SF1. The drum brakes on the SF1 were great from around 90MPH right down to about 10MPH and then they would apear to have a hidden system that greases the linings. crashing into the tail lift of a lorry at 10MPH is not fun, ask me how I know!
CLEM
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The SF2 discs are reassuring when two up with luggage.
Paul
 
piranha-bro2 said:
The SF2 discs are reassuring ALL the time! I've owned and experienced both and only one has seen me injured due to a lack of stopping power ... not hard to guess which one.
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That's a discussion that's already been had and if you need the best in braking, you do not ride a bike over half a century old.
Some years ago, I was riding out of town on the SF2 when a car coming the other way turned and cut my route, and stopped in the middle of the junction.
I was riding at probably 50 or 60 km/h. I hauled on the brakes whilst taking evasive action. My left hand foot rest clipped the front of the car, bike and myself spun and toppled over. I was lucky not to have slammed into the side of the car.
That was a contributing factor to my buying a 750 Aprilia with 4 pot Brembos to ride to work; I'd been riding the SF2 to work until then.

There are always better brakes, read more modern.
Engine braking in an emergency with a hand change and a lever throttle is a more involved affair than with a shifter.

A matter of choice.

And if safety is utmost, a modern car cannot be bettered.

Paul
 
The discussion here is, based on stopping power alone, would you choose an SF1 or and SF2? No one's arguing that 4-spots and ABS aren't better yet again.
 
I agree w all the above about discs being superior to drums, and I improved the braking on my SF2 by installing an updated Brembo master cylinder that gave a more modulated feel. Also installed direct hydraulic lines to each caliper. Now the bike actually stops!
 
CLEMTOG said:
big difference between the SF1 and SF2 is that with the 2 you can actually stop and the Jap switches are way above the "prince of darkness" Lucas items found on the SF1. The drum brakes on the SF1 were great from around 90MPH right down to about 10MPH and then they would apear to have a hidden system that greases the linings. crashing into the tail lift of a lorry at 10MPH is not fun, ask me how I know!
CLEM
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Hi Clem, yes I agree with your description and comparison. I find my SF1 is just like that and always explain to people that the brakes are great unless you want to stop. They laugh at this but I mean it and your description is spot on. I love my SF1 though and as soon as my friend seen it so did he, I tried to point him to a SF2 for the very reasons you mention. I found that my brakes are much better by running them with a bit more slack at the bars so I can give a real grab if needed. When they were ‘properly adjusted’ they threw me off twice when I braked as I would on my other bikes. Just stuff I got used to. 😊
 
piranha-bro2 said:
The discussion here is, based on stopping power alone, would you choose an SF1 or and SF2? No one's arguing that 4-spots and ABS aren't better yet again.
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If I had a nice SF1, I'd ride it.
I hope to do several thousand km this year on my S. Shouldn't I because I have an SF2?
Not to mention my Falcone which gets ridden quite a bit.
Paul
 
Paul Marx said:
If I had a nice SF1, I'd ride it.
I hope to do several thousand km this year on my S. Shouldn't I because I have an SF2?
Not to mention my Falcone which gets ridden quite a bit.
Paul
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lucky you mate. I do ride my sf1 as often as I can, in fact it is usually my go to bike but they all need use. I try and get out on my le mans1, ts mirage, commando (1968) and 1973 Bonnie but I have broken first gear on the Bonnie and not had time to fix it yet. Tbh, my sf1 is probably my favourite all round bike.
 
Certainly discs work better but if you have drums you quickly learn to modify your style of riding.
One thing I realised when riding the AE was that I rely on the rear brake a lot more than on my bike with the discs.
 
the front brakes on my Honda Pan European are crap (single sided twin piston calipers on sliding rails, stainless discs) I have rebuilt them with stainless pistons and they are still crap, they just stay being crap instead of getting progressively even crapper and then seizing. I found the front suspension much too soft so made and fitted some top hat spring pretensioners, this cured the soft front suspension and aided hugely the massive diving, Honda's anti dive mechanism on LH caliper does not work and is only for show, but what it did do is make the brakes even worse, because before (when it dived badly) there was a micro second for the calipers to bite, now they cant even do that, I am not sure which of the two I prefer, so a mod is planned to fit four piston calipers ex SP1, easy on the RH side, but difficult on the LH side due to the so called ant dive. I might even put a car caliper on one disc only and ditch the second.
CLEM
 
We can also do an airbag thread if security is the thing to consider with brakes.
I wear one every time on a bike, a bit like having discs.
Paul
 
I haven't seen any locals here wearing an Air Bag vest YET. They're pretty pricy still around here. A mate had one of those Leatt neck braces and I tried it, horrible gadget. It made turning your head virtually impossible, with zero chance of blind spot checking. One ride cured me.
 
In road safety jargon, brakes, like tyres and suspension, are classed as primary safety items (ie their function is to prevent accidents) and air bags, like seat belts and crumple zones, are secondary safety items (ie designed to minimise injury when an accident does occur).
 
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