Results 121–150 of 2297
Legendre — 18 years ago
Dan, that's good info about the speed coding. And I think my speedo is also reading a little low.. like 5mph or so.When I'm indicating 25mph, not only does it seem more like 30mph, but I really don't have that many cars passing me; and this is on streets where I know people drive about 35 on average.Oh, about that stud that affixes my airbox - no more! I didn't have it well sec
Legendre — 18 years ago
Very nice work joe! Clever approach, great execution.. and on top of all that, _it actually did something desirable._Do you get any vibration from that mass you added to the OD of the pulley half? I assume that Honda must balance these parts, since they are expected to do generally high RPMs.
Legendre — 18 years ago
Ok, here's one to ponder..I used to have a 1939 BSA M-20. 500cc flathead, side-valve single. Magneto ignition, with manual advance - you controlled the advance with a lever on the handlebars.One night, I was out driving in the dark (I'm not lying - the lights worked), and I noticed that my exhuast pipe was a dull cherry red. I'd never seen it do this before, and the stock Amal carb
Legendre — 18 years ago
Dan,I've got a 25mph 50V (marked 25 on the airbox). The speedo indicates about 29-30 on flat, level ground. The carb is (I think) the larger style; it has a 6mm stud, not 5mm, affixing the airbox. I can get the number off it, if needed.But I was wondering if you knew what to modify to make it a true 30mph model.. Just a sprocket change, or do I need to modify the porting, or both?I can also g
Legendre — 18 years ago
Yes, back in the day (1970's) oil was much crappier. 30 years ago, the average person would never have access to modern, synthetic oils.That, and the 4% ratio might be meant for break-in, or just to cover the manufacturer's butt.Fouled plugs and dirty exhuasts are a lot cheaper to deal with under warranty, than seized pistons. Follow the advice of other Peugeot owners here; this informat
Legendre — 18 years ago
$8.99 CAD for a liter! Wow, the Mobil-1 is $6.99 USD for like 12 fluid ounces.I'll trade you for smokes, lol.
Legendre — 18 years ago
The only time you want to take sandpaper to a cylinder bore, is if there are some moderate scratches (high spots) that you need to knock down before you put a hone in it, or to put the finishing touch on a porting job.If you don't put a pattern on the cylinder, new rings will not seat. If you just reassemble with the old rings after sanding it, they will probably not find their seat either.
Legendre — 18 years ago
Adam,FWIW - the only synthetic 2-stroke oil I could find at the local auto shops was the Mobil-1 stuff. I haven't done many miles, but compared to 2-cycles I've run on plain old Yamalube or hardware store oil, it smokes *much* less. I think the 48:1 ratio is part of this.My friend who runs a 2-cycle motor on his hanglider, swears by the Amsoil full-synthetic. It's pretty much what g
Legendre — 18 years ago
60psi is almost too low to run at all; are you sure you checked it properly?Install the gauge, and make sure it does not leak. Hold throttle full-open, and kick over the motor repeatedly until the needle on the gauge stops rising. Might take 5-10 revolutions before you max out on pressure.
Legendre — 18 years ago
Idle speed has no effect on top speed.The idle speed should be set to whatever the manufacturer recommends. But in general, keep it high enough that it doesn't stall, but not so high that the bike is trying to pull at idle.Too high of an idle can also ruin the clutch, as it will constantly be slipping when you are at a standstill. If the bike wants to creep forward, lower it.
Legendre — 18 years ago
As for the engine not settling down when you release the throttle, that's typically caused by the slide being open too far (basically, the 'idle' position is set too high).You can run into problems like this, when (for whatever reason) you aren't getting proper mixture at idle, and you crank up the idle setting to compensate. This might help it to idle, but the engine doesn
Legendre — 18 years ago
Well, if you search on 'search option'... oh, wait.
Legendre — 18 years ago
Hey, that's a clean looking job..! There aren't any closeups, but I can't even see the welding work.BTW, your petunias are looking fine, but the marigolds aren't doing so well.. lol
Legendre — 18 years ago
Marc,For what it's worth, I have a dellorto carb here - model VHB30 - and it's definitely off of a 4-stroke. Guzzi 850 actually. 30mm bore, flat (well, square) slide, float bowl mounted to the bottom of the body, enrichener device, seperate main and pilot jets, and a idle fuel screw.All of the VHB carbs I've seen are exactly like this, only varying in bore diameter. I have a number
Legendre — 18 years ago
I think those 'screws' you are talking about are the jets, if they are brass parts located inside the carb.The only way to govern a motor with jetting, is to put in jets that are too large. This causes problems, though.. like fouled plugs and excessive carbon buildup.Mopeds have three main areas for governing speed - carb/intake size, exhaust restriction and gearing (sprockets).And BTW,
Legendre — 18 years ago
The problem with increasing the size of the intake & carb, is a loss of velocity in the intake tract. This is why most 4-barrel carbs (for cars) have secondaries that do not open until the engine is already running at higher speed. The engine can only draw so much mixture per stroke, and as the intake gets less restrictive, the velocity also falls off. This results in a loss of efficiency. Tak
Legendre — 18 years ago
If they were able to cut the volume of the oil in half, by removing solvents, then I don't find the 100/1 claim to be too outrageous. But that stuff joew quoted about going twice as far on a gallon of gas is pretty hard to swallow.Amsoil makes great products, and have done so for decades. Their regular synthetic 2-cycle oil is preferred by guys that fly powered hang gliders, and I think that
Legendre — 18 years ago
From the pic, those lights look like they use an H-4 halogen bulb. Pull out the bulbs and check the wattage ratings. There are single and dual-filament H-4 bulbs, and in your case, you probably want the single-filament.Just one of these bulbs probably uses more current than your alternator can provide. Don't think I've ever seen an H-4 under 25 or 35 watts. But it still doesn't make
Legendre — 18 years ago
Had you thought of just *asking them*?email: info@mopedwarehouse.com
Legendre — 18 years ago
It shouldn't, unless your 50V is modified.
Legendre — 18 years ago
I've seen boost bottles as stock equipment on motocross / enduro bikes from the 1980's.The sense I have, is that with modern reed-valve (or rotary valve) engines, with variable exhuast port timing, well designed porting, pipes & intakes, that the boost bottles are not very useful. Or, they are just not worth their weight and cost for the small potential improvements in performance.Th
Legendre — 18 years ago
Err, idle speed (set by the idle speed screw) has no effect on top end speed. It simply determines how far the throttle can close, and does not affect how far it can open, or any other relevant parameter.Are you sure that you are not setting the idle speed with the idle mixture screw? If you are using the mixture screw for this, then that could have an effect on top speed.
Legendre — 18 years ago
I think you're asking how to adjust an idle mixture screw. There are two types; air and fuel screws. Each carb design is different, some have a fuel screw, some have an air screw, and some (like Gurtner) have none at all - it uses fixed metering.You can tell what type of screw it is by removing it. A fuel screw will have a little pointed tip, almost like a needle. An air screw will have a lon
Legendre — 18 years ago
Ed,Yes, you buy the one that is designed to fit on a Motobecane 50V :)The kit mopedwarehouse sells is made by Airsal
Legendre — 18 years ago
Mopedwarehouse.com sells these kits, but they are out of stock right now. I inquired about a kit last month, and was told that they were waiting on a shipment.Might try emailing them for the status.
Legendre — 18 years ago
joew,It's interesting how extreme things became with the open exhaust - total loss of acceleration, but higher top speed. It might actually make some sense, though.Since mopeds are generally detuned - we'll just take that as a given - it makes sense that the stock pipes are designed to give better low-RPM torque, rather than at high-RPM, since it's already been decided to limit top
Legendre — 18 years ago
Wow, that's a really neat little turbine engine. Looks very nicely made as well.. is there any info on dimensions? At 2.18lb, it must be pretty tiny.I can only imagine, but this thing must just scream like a banshee. Good luck with your local noise ordinance.
Legendre — 18 years ago
Having more power and a higher top speed doesn't necessarily mean that you need to be doing higher RPMs.If you can improve the torque of the engine, then taller gearing (larger front sprocket, etc) will net you higher speed for the same RPM. More torque at a given RPM, or more RPM at a given torque are both horsepower increases.Horsepower is the factor that determines top speed, but torque de
Legendre — 18 years ago
Motorcycle / moped cylinder boring is done on a boring bar, not a lathe.Nothing is perfect, but it does need to be true, and have the correct clearances.As for the boost bottle, you will probably need to drill & tap the intake manifold to accept a pipe-thread, and install a spigot fitting, so the bottle can be connected. Be careful, as you only want the fitting to come flush with the inside of
Legendre — 18 years ago
Yeah, in Minnesota a Motorized Bicycle (which covers mopeds) must have an engine less than 50cc, make not more than 2hp, and is limited to speeds 30mph and under.