could I restrict it myself to 33bhp?

[steppen22]

What's involved, what needs to be done, etc. No bike in particualr: restriction in general.
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no regrets, no retreat, no apology.
I've made mistakes in the past, and I apologise for FUCK ALL.

[sickpup]

Yes you can.

[The Original Muzza]

Carbs or EFI? Carbs are allegedly quite easy to do with a little know how, as for EFI most bikes will have a USB cable which can be hooked up to the bike (from godknowswhere), get a program from godknowswhere and then remap the engine. Probably best to leave this to professionals unless you have the exact upgrade to remap the engine without screwing it up.
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Current Bikes: Husqvarna Svartpilen 401 (2020)
Former Bikes: Honda MSX125 (2014), BMW Funduro (1996), Honda VT500 (1983), Yamaha FZR250 (1989), Suzuki GZ125 Marauder(2005),:Triumph TT600 (2002) (stolen)
From then on, I and the bicycle feelings deeper.

[MarJay]

[The Original Muzza]

My bad then. Read up a bit when I was getting my bike restricted and got the impression that was the restriction method on "most" EFI systems.
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Current Bikes: Husqvarna Svartpilen 401 (2020)
Former Bikes: Honda MSX125 (2014), BMW Funduro (1996), Honda VT500 (1983), Yamaha FZR250 (1989), Suzuki GZ125 Marauder(2005),:Triumph TT600 (2002) (stolen)
From then on, I and the bicycle feelings deeper.

[Im-a-Ridah]

It can be done electronically on most bikes, though depends how good you are with electronics TBH.

[ncrn]

If its a carbed bike it'd usually be a set of washers that restrict the fuel flow. If you can get hold of the sizes for the washers you'd be able to put them in yourself.
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Past: 55 Sym Jet, 91 ZZR250, 03 NSR125R. Present: 97 ER-5.
https://www.nsr125.co.uk - NSR Owners forum.

[ZaphodBeeble]

You could make yourself a throttle stop if it's fuel injected. Make it so its the opposite of an idle adjuster. In other words; you can adjust the amount of throttle opening.

Take the bike to a dyno center and stick it on. Adjust to 33bhp. Then you should weld the adjuster in place so it can't be moved.

Job done I would say.

PS. What bike is it specifically?
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Current bike: VTR1000F Firestorm. Previous: Firestorm (written off) - XJ600 Divvy - NSR125 - DT125 and a load of offroaders.

[MarJay]

[smegballs]

My theory on restriction goes thus:

Get an "inline" rev limiter unit that intercepts signals from CDI, ECU (most likey easier on oldy bikes) etc etc

Get bike dynoed and find limit for 33bhp and set aftermarket rev limiter to this limit.

With the rev limiter switched out of the ignition circuit one can ride ones bike like the the firebreathing beast it is (or isnt).

If pulled discreetly flick switch over to have the "rev interceptor" in the ignition circuit.

LICE: "Is this restricted??"

ME: "Yes officer it is" *starts bike and bounces of say 5k rev limit* "See its got a rev limiter"

https://i44.tinypic.com/2uzf61i.gif

(Adapt circuit for particular bike, just an example)

Interesting point, on the assumption that the police pull you over at feasible 33bhp speeds say 80mph and they decide just for laughs to strip the bike by the roadside and find the limiter switch. (Copper is also a expert auto electrician )

When confronted about the switch they would have to prove the limiter was turned off to prosecute you right?

You wouldnt have to prove the limiter was turned on.


Rich

[ncrn]

I can only see that causing the bike to handle horribly to be honest.
____________________
Past: 55 Sym Jet, 91 ZZR250, 03 NSR125R. Present: 97 ER-5.
https://www.nsr125.co.uk - NSR Owners forum.

[smegballs]

How come?

You only have the revs restricted when the coppers are nearby, anytime else you ride full power!

Even after you pull away from the coppers just take it easy for a little bit before switching back to full power and your off.

If thats how a throttle stop works, kinda by restricting the throttle opening so max revs (yes I know not always that simple), and rev limiter is like an electric throttle stop that can be turned on and off whenever needed!



EDIT: Yes it may not work for some bikes that make say 100+hp at max revs, but for less powerful bikes that can be ridden using low revs, say an SV650, it should work.

[MarJay]

[Tristan.]

OK, heres another one, say on a CB500, parrallel twin, 50 odd brake and massive underseat storage, you install a long HT lead to one cylinder and route it under the seat and kep a pair of snips in there.

Pulled and the police say they're taking it to check, you ask if you can retrieve your wallet/family mementos/pet lizard from beneath the seat and discretely cut the HT lead, meaning it's running on one, and probably putting out about 20 brake.

Mind you, you now have a sparking HT lead next to your frame, and very close to your petrol tank, but thats the police dyno operators problem


....or

on a 600 sportsbike say, you see the blues and quickly so cut through your throttle cables and turn the idle up to full, yes officer this is how I always ride it.

OK so that wouldnt work, but I love the image of you waving at the police as you creep away slipping the clutch with a constant 4k RPM

[temeluchus]

piece of drainpipe cut to length and glued to the carb top would do it. Prevent the throttle from opening fully.

Also you could alter your throttle assembly on the bar, preventing the throttle from opening fully. That would work on pretty much anything, but be more noticable.