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Post by wotavidone on May 15, 2006 3:16:25 GMT -5
Here's a question that's amazingly hard to find the answer to on the net.
Just how many horse power would my 500E have produced when it was young and fit and bog standard?
How fast would it have been expected to go back when I was about 30kg lighter and 30 years younger than I am now?
Mick
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Post by StewRoss on May 15, 2006 3:48:30 GMT -5
They put out about 33hp or so...at the flywheel. Not a real lot! Top speed of a good one, down a hill of about 150km or so.
A little modification will see over 160km...down a hill.
My cafe racer will do just over 180 on the flat with 88.5mm piston, 38mm carby, Tingate brace pipe, clip-ons and rearsets and a Ducati 750SS fairing (...plus it's a bit lighter than standard). That speed is at about 6,500 as well!...hits a solid wall at that point though...doubt it'd go any faster even down hill...different cam, headwork etc. may assist there, but I really like it just as it is.
It's sort of weird riding it, especially after not being on it for a while, feels like it's on drugs...low revs and 'high' speed...others have ridden it and came away with the same opinion. I often wonder if the E models were a bit faster than all of the rest?
Certainly as a standard bike my H model wouldn't go near it.
I am driven...well sort of...to achieving over 200kmh...hopefully my new bike will achieve this figure...we'll see.
SR
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Post by StewRoss on May 15, 2006 3:50:52 GMT -5
I am also tempted to build an SR for Lake Gairdner....there is a figure to better now....hmmm. At least you're a lot closer to there than I...
SR
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Post by tradrockrat on May 15, 2006 12:11:44 GMT -5
Well I'm a big boy (230 pounds) And I find my 78 hits 70 MPH pretty easy but it fights REAL hard to pull any more, and I've never seen it go over 85 - 87.
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Post by wotavidone on May 15, 2006 19:58:31 GMT -5
I feel my bike must be about right then. My 78 model, dragging my 220 pounds, on a slight uphill run, with a 25 mph head wind definitely ran out of steam at 70 mph the other day. Had some throttle left, but nothing happened when I rolled it on.
I have the wide open throttle stop set so that it hits full throttle just as the slide gets to the top of the throat as per the shop manual, so it was real throttle I was applying. I'd say on a good day I'd be very happy if it pulled 140km (88 mph).
So I guess mine sort of lines up with tradrockrat's - hits 70 easy, but runs out very quickly after that.
180 km on a stock bike would be downright scary.
The styling and the 60mph ambience mean more to me than outright speed, but I was curious.
Lake Gairdner - I guy here at work goes up there with his brother all the time. Runs a VL commodore - holds some sort of land speed record for naturally aspirated sedans. Lot of fun apparently.
Speaking of salt flats, can't wait to watch The World's Fastest Indian, my favourite actor and my favourite mode of transport. Should be a good movie.
Mick
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Post by StewRoss on May 16, 2006 3:48:57 GMT -5
Hi Mick,
The cafe racer is not real bad to ride. It has Mulholland rear shocks and a bit of air assistance on the front forks and longer spacers...but it isn't too bad really. Not sure if I'd want to go any faster on it though...my new one will have much better suspension and a braced frame...so that should assist that one.
I'm looking forward to seeing the Indian movie as well. I have heard nothing but good things about it...even from non-bike riders...so it must be OK.
I see that Nigel Begg from Deus in Sydney had an SR do 110.8 mph at Lake Gairdner this year....tempting to take up the challenge....salt corrosion would be the only thing to put me off...my bikes are too shiny...
SR
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Post by wotavidone on May 16, 2006 18:48:41 GMT -5
I wouldn't worry too much about corrosion. Apparently at the right time of year the salt, which is not all common every day sodium chloride table salt, is very hard and not very dusty. I reckon a rinse with fresh water as soon as the bike is back on the trailer would be all you'd need.
See you had a 360 yam. That is the one bike I've owned that I have regretted selling.
I reckon in terms of flat out performance, my old brown tank 360 would have done my SR like a dinner. Mine was a true rat bike - leaky 5 gallon plastic desert tank full of 25:1 BP Zoom lawn mower fuel, a blanking plate where the oil pump should have been, a coil of an AP5 valiant clamped to the front tube with a hose clamp, a plug where the decompression valve was meant to go, the biggest front cog I could get, and about an inch and a half sideways play in the swing arm. Sunday rides consisted of a quick blast out to the Warnertown Pub, sign the Bonafide Travellers Book, so we could buy a beer on a Sunday, spend a pleasant hour drinking beer and scoffing pickled razorfish, then have a race home down the white line on highway one. My mate had a green tank 360, with a speedo!, and he reckoned he could see 100 mph if we slipstreamed them close enough together. Mine used to tank slap at that speed a bit, with all that play in the swingarm, etc.
The amazing thing is that I lived long enough to grow old enough to know better.
If my sons did the same thing I'd kick their butts all the way to next week.
Those were the days.....
Mick
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Post by StewRoss on May 17, 2006 6:20:38 GMT -5
Ah yes, the old days...I aquired the 360 to put the engine into a YZ B frame and then register it. Worked well until I did the bottom end...I rebuilt it and put it back into the RT1 frame then sold it on.
Plenty of power in the old 360 for sure...I used the YZ engine in the road bike for a while aftewr the 360 went, but the clutch would heat up and cease working after a short time; I also had to gear it up high to attain reasonable road speeds...you'd have to slip the clutch like mad off the lights and then it used to go like a 'cut snake'...while the clutch lasted that was...you'd have to stop and let it cool down again. It was like riding a TZ through the tar Adelaide Hills roads...well, a TZ on knobbies that is...
Certainly the 360 would be quicker in accelaration than the SR...but the SR makes up for it in other ways...
I met a guy in Adelaide years ago coming back from Lake Gairdner who had a drag bike frame with an RM465 engine in it. It had an air shifter and a large nitrous oxide tank. He also had an alloy plate about 20mm thick holding the head down onto the barrel! A real beast...
SR
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Post by motomick on May 25, 2006 8:21:05 GMT -5
in a previous life as a motorcycle mechanic in the 70's at a honda shop,customer boughta Sr in for a 1st service, he didn't trust the yamaha dearler?,(pun intended),i did everything by the book,tappets ,oils etc,up the road for a test ride,geezas!!,back into the shop, started pulling it apart,the owner walks in & asks what i'm doing,i apoligise,saying i must have done something wrong as it's struggling to reach 70mph,he laughs ,says thats about it's lot,oh ok!!,(bearing in mind i rode to work on a thuxton velo at the time),i was disapointed somewhat!!,didn't nickname them "Slow Rodes" for nothing eh?,to think yamaha compared them to the goldie in their release adverts,only thing in common was the single cyclinder?,how times have changed ;D,cheers  |
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Post by wotavidone on May 29, 2006 19:51:52 GMT -5
Had a spare moment on saturday, so I filled the time with an experiment. I taped my GPS to the mirror stem, and went for a ride.
Travelling on a flat, straight road, with 100km/hr on the speedo, my GPS was reading 110 km/hr!
At 50km/hr, the GPS was reading 55. At 80km/hr, the GPS was reading 88!
i.e. my speedo is exactly 10% slow. So the other day when I went to Kadina at 110km/hr, I probably was cruising at 120 km/hr, which is near enough to 74 mph. Oops. Didn't see any radars. All was good and the bike did it well, even felt like it had a bit left if I wanted to wring its neck. I didn't do so well when I copped the bee in the face just outside of Alford, but I made it home alive.
One day when I think all the policemen are at their annual Christmas party or something, I might repeat the experiment and see what the bike tops out at.
Mick
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Post by wotavidone on Jun 18, 2006 18:05:10 GMT -5
Went to a Dyno Shootout run by the local car club yesterday. Definitely educational. Lots of cars out there with 200 or even 300 kW (400 hp) at the back wheels. Biggest grunt on the day was a turbo XR6 Ford. 332 kW (about 440 hp) at the back wheels.
Highlight #1 for me was when Big John backed his chipped Suzuki Hyabusa up the ramps.
115.2 kW (154 hp). Rear wheel. No wonder he has trouble keeping the front wheel on the ground at the drags.
Serious grunt I thought, until somebody with a GSXR ran 118 kW. A dyno is hard on the hardware though. I would have liked to give it a go on the SR, but at $30 a run, and the potential for lots of expensive embarrassment if it all went wrong, I decided to put the bucks towards a new front tyre.
Makes you think though. I don't think I'd ever bother to buy a new bike and modify it, as some do. You can just go and buy whatever speed you need, straight off the showroom floor.
Highlight #2 was the presence of the Turtle. Aussie revheads may remember this old beast if they were into drags in the 1970's. She was a 1948 Holden. With a 186 cubic inch 6 cylinder, triple weber carbs, hand ported head, etc, she ran a 12 sec 108 mph at Adelaide International Raceway in 1973 to be the fastest in her class in the nation. Brakes were unboosted drums, but he had a big lever welded to the brake pedal that came up alongside the steerin wheel so he could give it some hand assist at the end of the track. She belonged to my mate's boss, when my mate was an apprentice mechanic in the 1970's. I remember him doing donuts around the fuel pumps at lunchtime.
Fair dinkum my mind went back 30 years yesterday. Gotta get into it and enjoy the last gasp before the world runs out of petrol.
Mick
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