sproket for a 50?

[jamie192]

I want to get a sprocket for my ts 50 x, to make it go a little faster, i can get 35 out of it at the moment, any one know how many teeth i should loose, and how much faster it will make the top speed.
Any one how much one is likely to be?

I want this because i want a higher top speed, and so i dont have to change gears in the middle of pulling out of a road so i actually make it to the other side without my engine crying "change up a gear"

Thanks for your time, look forward to your reply.
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Ride Fast, Brake hard, don't fall off!

[Rob W]

Get a big-bore kit. My old TS had one on when I got it so I never knew what it was like, but I can imagine if it hadn't had one, I'd of got one. Used to get 50-55 out of mine, think it's only about £100-150 so it's not too bad

[Ste]

Bear in mind that you'll reduce your acceleration, probably not really a good idea as a 50cc doesn't have great acceleration as standard.

[Rob W]

For better top end you want a sprocket with more teeth, but as Ste says you'll lose acceleration

[TheShaggyDA]

Less teeth, on the back - more teeth on the front.
____________________
Current: CB500 Previous: CB100N, CB250RS, XJ900F, GT550, GPZ750R/1000RX, AJS M16, R100RT, Enfield Bullet

[i:6e3bfc7581]But still I fear and still I dare not laugh at the madman...[/i:6e3bfc7581]

[jamie192]

I got a bore but im not going to fit it untill the winter is out i just want a slightly smaller sprocket to get an extra 5 mph out of it, without loosing the reliability of the bike

Just counter how many i got on the back already, i counted 51, does this sound normal,

Any ideas on what i should get it down to i was thinking 47 48?

My acceleration on it is quite quick though, like i said i go though first like instantly so a little more wouldnt slow me down that much, i got to 30 quite quickly, im not one of these people that brings the speed up gradually, i change gear and im straight back to full throttle, i mean i speed in 30 limits i go 35 most the time.
____________________
Ride Fast, Brake hard, don't fall off!

[Ste]

Sorry, it is a standard TS50 the acceleration isn't anything to be shouting about. You'll suffer more from the lost acceleration than you will gain from the extra top speed. Before going much further I would have a look at what different size sprockets are available for it as I can't see there being that big a choice especially in ones with less teeth as I doubt there is very much market for them at all.

[mrchips]

If you start down that route you'll end up with 70cc big bore, 22ml carb, race reeds, carbon fibre indicators...

Are TS50s the same as MT50s that can't really be derestriected just tuned?

[jamie192]

i know its acceleration isnt great but going down 1 or 2 teeth less isnt going to make it like pulling away in second gear is it?
Or is it, i was hoping it would give me like a half way kind of thing maybe even less like 1/4 of the way.
____________________
Ride Fast, Brake hard, don't fall off!

[jamie192]

I already have 70 cc bore sat next to me, but i dont plan on putting it on untill next summer, because then i have finished school and its not so important that its amazingly reliable. i just want another 5 ish miles an hour without spending much or anything like that, and its easy, and it doesnt involve taking the engine apart.
____________________
Ride Fast, Brake hard, don't fall off!

[mrchips]

My MT50 with its top speed of 35mph was one I always wanted to alter/H100 engine but never got round to it for various reasons. Instead I just stuck out the 35, 40 with tail wind, and once I got my 125 it felt like a 600. As crap as it is, just plan your journeys a bit sooner, if I can get through it any one can.

[jamie192]

how much will my acceleration be affected with 2 or 3 teeth less in my rear sprocket, it cant be that much surly can it?
____________________
Ride Fast, Brake hard, don't fall off!

[mrchips]

A fair bit I'd say, and if you lose too many teeth it will probably just stall.

[Rob W]

To be honest, I wouldn't of thought your gonna notice that much of a difference without a big-bore kit, and if you've got one there just fit that, it's not too hard.

[Ste]

For it to make a noticable difference to top speed it will make a noticeable difference to acceleration, also does the bike actually have the power to be able to run up geared as I wouldn't count on it.

[jamie192]

yeh but with a bore you loose reliability and they can overheat, all for just another 5 mph? o and its easily spotted by the police when im going 50 mph.
____________________
Ride Fast, Brake hard, don't fall off!

[jamie192]

Its just i get to 35 on like every road that isnt uphill, and when its a national speed limit like most of them are, i wanna go that little bit faster. i only want to be able to make it up to 40 and i can pull away in second, on flat just not uphill so like a 1/4th or half way mark would be ideal because i wouldnt have to change in the middle of oncoming traffic.
____________________
Ride Fast, Brake hard, don't fall off!

[Rob W]

I rode mine for 6 months with a big-bore with no problems and it managed 50-55. What makes you think next summer your gonna be less easy to spot doing 50mph than you would be now (bar the fact it get's darker earlier)? Just keep your eyes peeled mate, I never once got pulled up and asked about my speed, only for not riding with L-plates.

End of the day it's up to you really. All I ever bought for mine was a DEP can, and that did sweet FA. Luckily mine was bored out anyway so I didn't have to worry about that, but as I said if it hadn't been, I would of done it.

[Ste]

[mrchips]

For now the best modification you can make is clean your exhaust port out, my MT50 flew after that.

[Rob W]

[RS1Banger]

save the front sprocket till you kit it, standard it won't pull it
ts50's are restricted mainly by the porting on the barrel
the exhaust port as standard is literally half the height of the port on an autisa kit
they also have only two transfer ports and no boost port
hence the total lack of power past 7 grand
when you fit the kit you'll need to jet it up quite a lot as well

[binge]

You are going to be illigal putting a 70cc top end on it any way, so you may aswel just have a look on ebay and get a TS125 engine for about £70... That way you wont have to do a thing apart from drop it in because a TS125 would kill a TS70 tuned...

<|Ben|>

Oh, and the TS is restricted in the exhaust... Buy a race pipe for it and it will probably do 55 as it is...

[jamie192]

ok i been out on it, im going off the idea of a sprocket, what about changing the exhaust i already have a depsport one on the rear but the backbox i think they call it, theres a restrictor disc in there, could i take that out or make it smaller, i know you need a certain amount because it needs back pressure, but would that make it faster, this could be an option because my friends a welder and hes going to shorten the rear end on his hornet so i can get him to do my exhaust at the same time.
____________________
Ride Fast, Brake hard, don't fall off!

[binge]

Let me guess, Your a car person? on a car its called a back box, on a scooter/bike its called an end can?

If it is in the end can then you can take it out all together. The place where all the backpressure/air expansion happens is in the expansion chamber (The part where the pipe goes really fat)...
The exhausts are restricted in the expansion chamber on the crosser 50s so its either a full new system or a good welder!

But take the disk out and see how it goes...

<|Binge|>