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Bevmeister |
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Bevmeister Derestricted Danger
Joined: 28 Mar 2017 Karma :
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Rogerborg |
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Rogerborg nimbA
Joined: 26 Oct 2010 Karma :
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Posted: 18:54 - 14 Dec 2017 Post subject: |
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Oh, the joys of eking out every last fraction of a pony.
First up, your Pulse might have been lying to you but your Sinnis isn't. However, if you're regularly being overtaken by cars while pinning it hten something isn't right: t claims 11.5hp, which should be good for 60.
Sadly, you've already missed your chance to do a MotoTune run in, so what you've got is more or less what you're going to get. I doubt there's another 5 or 6hp waiting to be unleashed, which would be the difference between 50 and 70.
Oil change, put in an NGK spark plug, make sure the air filter is clean, the tyre are inflated, the brakes aren't binding and there's nothing rotten in the state of your chain and sprocket.
Best result might be to sell it on or trade it in ASAP.
Please tell me that you didn't buy it new for £2400. ____________________ Biking is 1/20th as dangerous as horse riding.
GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike |
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Bevmeister |
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Bevmeister Derestricted Danger
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Rogerborg |
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Rogerborg nimbA
Joined: 26 Oct 2010 Karma :
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Posted: 19:23 - 14 Dec 2017 Post subject: |
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Well, it's not making 11.5hp, so it's clearly been mis-sold. ____________________ Biking is 1/20th as dangerous as horse riding.
GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike |
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Bevmeister |
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Bevmeister Derestricted Danger
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RhynoCZ |
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RhynoCZ Super Spammer
Joined: 09 Mar 2012 Karma :
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Posted: 19:45 - 14 Dec 2017 Post subject: |
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The best two things a rider can do to make his motorcycle go faster are more aerodynamic clothes (that includes proper positioning on the motorcycle) and losing some weight.
The first one costs money, the second thing will actually save you some money. Do the second thing first, save up some money to buy better motorcycle clothes.
Then you may experiment with shorter final drive gear ratio. Many manufacturers put long final drive gear ratios to save fuel = make the motorycle more atractive, so you can't really rev the top gear to the limiter = the motorycle having lower top speed. With shorter ratio, although it sounds odd, the motorcycle will not only have better acceleration but also higher top speed, worse fuel economy though.
And this is all I would be willing to do, to gain some more top speed. ____________________ '87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI; MZ 150 ETZ, '98 Mercedes-Benz w210 E200 Kompressor |
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Bevmeister |
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Bevmeister Derestricted Danger
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RhynoCZ |
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RhynoCZ Super Spammer
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Bevmeister |
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Bevmeister Derestricted Danger
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RhynoCZ |
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RhynoCZ Super Spammer
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Posted: 20:05 - 14 Dec 2017 Post subject: |
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Just for the fun of it, check the final drive gear ratio (the amount of teeth on the front and rear sprockets), then check it on the previous motorcycles you've riden (google it). As said, the manufacturers like long final drive gear ratios, because that's what improves the MPG, but robs you off not only acceleration but also the top speed.
Long final drive gear ratio makes your engine work much harder.
No need to go crazy about it, just removing one tooth from the front sprocket or 2-4 from the rear sprocket will do the trick. IF you decide to use a smaller front wheel sprocket you won't even have to shorten the chain (which is easy regardles).
My own experience (CB-1):
40 teeth back = 175km/h top speed, good MPG
44 teeth back = 190km/h+ top speed, very agressive acceleration, crap MPG
I bought it with the 44t sprocket, very fun motorcycle to ride. But then I had to do some commuting so I put it closer to the factory spec = fewer revs, better fuel economy, less heat. ____________________ '87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI; MZ 150 ETZ, '98 Mercedes-Benz w210 E200 Kompressor |
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Ste |
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Ste Not Work Safe
Joined: 01 Sep 2002 Karma :
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Posted: 20:08 - 14 Dec 2017 Post subject: |
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Playing around with different size sprockets isn't going to fix it. |
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cb1rocket |
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cb1rocket World Chat Champion
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Bevmeister |
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Bevmeister Derestricted Danger
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Ste |
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Ste Not Work Safe
Joined: 01 Sep 2002 Karma :
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Posted: 22:40 - 14 Dec 2017 Post subject: |
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Talk to the shop, do not worry about the sprockets. |
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Rogerborg |
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Rogerborg nimbA
Joined: 26 Oct 2010 Karma :
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Posted: 22:52 - 14 Dec 2017 Post subject: |
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Bevmeister wrote: | I'm going to have a word with the shop I brought it from tomorrow also, and see what they say. |
"It'll get faster after it's run in. Come back in a month."
1 month later.
"You've not run it in right, that's owner abuse."
Sorry, there's no magic answer to your dilemma.
Just to check, you have tried spanking it in 4th rather than 5th, yes? ____________________ Biking is 1/20th as dangerous as horse riding.
GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike |
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Bevmeister Derestricted Danger
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Posted: 22:58 - 14 Dec 2017 Post subject: |
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No I haven't, but it has crossed my mind
I shall see what I can get out of it in 4th on the way to work tomorrow and report back. Cheers |
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RhynoCZ |
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RhynoCZ Super Spammer
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Posted: 23:29 - 14 Dec 2017 Post subject: |
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cb1rocket wrote: |
thats not right, remember the speedo on a cb1 is off the front sprocket.
theory is (based on rear sprocket only)
Larger sprocket = more acc. less speed poor mpg
smaller sprocket = less acc. more speed, good mpg
Also a cb1 owner! |
The GPS showed 194km/h or so. How fast does your CB-1 go?
With 41/15 they* say it should do 190km/h
With 36/15 it's about 170km/h
*they = the internet
I'm still not sure what made them choose different final drive gear ratios for different markets.
EDIT: googling around, I even found 193.1 km/h top speed for the CB-1. Sounds about right. ____________________ '87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI; MZ 150 ETZ, '98 Mercedes-Benz w210 E200 Kompressor |
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P. |
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P. Red Rocket
Joined: 14 Feb 2008 Karma :
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Bevmeister Derestricted Danger
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Rogerborg |
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Rogerborg nimbA
Joined: 26 Oct 2010 Karma :
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Posted: 14:17 - 15 Dec 2017 Post subject: |
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I was going to dismiss that out of hand, but then I recalled that in China, small bikes are (I believe) only allowed to do 80kph / ~50mph.
It is not inconceivable that your Euro4 fuel injected electronomical wonderbike is actually restricted to 50mph.
I still think it's more likely that when you shifted up, the revs dropped so far below the power peak that it was unable to produce enough power to get you any faster. There may be something in the fuelling that's nobbling you, and sadly it's not just a matter of fiddling with a jet or needle.
That's why you'll want to brutally thrash it in 4th until it absolutely won't go any faster, and only then change up. 5th is really just an economy gear on low powered 125s, unless they're low geared. ____________________ Biking is 1/20th as dangerous as horse riding.
GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike |
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RhynoCZ Super Spammer
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Nobby the Bastard |
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Nobby the Bastard Harley Gaydar
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Bevmeister Derestricted Danger
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P. Red Rocket
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Old Thread Alert!
The last post was made 6 years, 105 days ago. Instead of replying here, would creating a new thread be more useful? |
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