Latest ADS5 Vs Taffy on TS1 225......

[gadgetman]

'Horses for Courses' comes to mind as the new pipe makes more power and equals the torque provided you are over 7,000 rpm but below that the old Taffy beats it hands down. I suppose it depends on the individual as to which they prefer although that torque curve on the Ads pipe looks pretty impressive , it would be more impressive though if it came in lower down in the rev range where most street scooters spend most of their time.
Great work and gives us all another option when choosing a tuned pipe.

[tony]

No... mate.. you are wrong... sorry...
look at the graph.. now the taffy pipe brings the power in lower.. sure.. but look at the area under the graph.. thats your power, your driveabilty.. the ads pipe has much much more area.. what this means is really that the taffs pipe and this barrel application (whatever the porting and spec was) was mismatched... what the ads pipe has done has sync'd with that barrel better and now the barrel is working where it wants to work-hence a better graph and more driveabilty.
If you wanted more performance from the taffy pipe you need to try to find out what it was designed for and work to that.. also take into account Ian and Terry probably designed this many many moons ago.. And I'm sure if Ian was still designing pipes he would be designing them along the lines of what the Ads pipe is today. In fact I'll ask him.

[Adspeed]

'Horses for Courses' comes to mind as the new pipe makes more power and equals the torque provided you are over 7,000 rpm but below that the old Taffy beats it hands down. I suppose it depends on the individual as to which they prefer although that torque curve on the Ads pipe looks pretty impressive , it would be more impressive though if it came in lower down in the rev range where most street scooters spend most of their time.
Great work and gives us all another option when choosing a tuned pipe.

Thanks for your comments, don't forget this is our 'Fast Road' (intended to take on the JL4 really) pipe so yeh its gonna further up the rev range but if you look its only by 300-400rpm which in real terms isn't a lot. When I bought one of the Mk4's (A while back now!) it was pretty much famous for being a Torquey pipe. But the area under the graphs, the workable power must speak for itself. . The ADS3 is our lower revving pipe which on a comparison on my TS proved to be a cracker. Although not as much an increase as some setups I think due to v reserved port times......



Hope to have some more results soon of the ADS5.......

[J1MS]

I recently Dyno-ed my old TV175 it's got a taffy road pipe fitted to a Standard TS1 running on a 32mm VHSA Indian head skimmed and reprofiled compression ratio is close to 8.9-1.

The Port timings and areas are totally standard just blended with a yam reed block flowed, and fitted with two stage Boysen reeds.
I will post the graph on this thread, as soon as I figure out where the printer lead has gone.

[fairspares]

adspeed, do you make the pipes now sold by af rayspeed?.

[Adspeed]

adspeed, do you make the pipes now sold by af rayspeed?.

No pal we're nothing to do with the AFR pipes.

[gadgetman]

Don't wish to appear to be argumentative Tony but you must have missunderstood the point I was trying to make that the Taffy made 2 bhp and 2lbs/ft more than the Ads pipe at any engine speed below 7,000 rpm and this is the engine speed at which most street scooters spend most of their time.
Please explain to me which part of this statement is incorrect!

[gadgetman]

One other point is that the Ads pipe fitted to a 225cc bike which with anything like standard gearing would only be producing less than 8lbs/ft torque at 50mph in forth gear which when you mention drivability that is as undrivable as it gets even forgetting wind resistance would need constant gear changes every time you hit even the slightest of an incline
Fine though if you ride everywhere at 75 mph which is the point at which the Ads is better than the Taffy

[tony]

No, no prob... I understand you mate.. your point about the power being lower is correct but it will drop off much sooner.. you'll be changing gear much earlier than you will with the ads pipe according the graph.. it will keep driving. Yes its making its power 400 rpm or so later.. but its only 400rpm and you can clearly see the motor is much more happier with the ads pipe by looking at the graph. And so thats where this particular engine wants to live. With ads volumes/length and angles...Its clearly not working that well with the taffs in comparison is it? Look at the sheer extra area under the curve the ads has.. its so clear.
Its possible the taffs pipe will work better with a motor with lower exhaust timing than this one and then you may get more area similar to the ads pipe simply because the motor would be in sync better. I dont know if I have explained very well?
Look at the graph below.. with the taffys you have only 1000rpms where the motor is making 20hp or over..
Ads is making over 20hp from 6800 all the way to 9000.. and on the torque graph ... well you can see the difference in spread of power... thats your 'drive'.Thats where you dont have to keep changing gear. What you would have to do is gear this particular motor sensibly to get it to work.. but its much more efficient with ads pipe on. Another Ts1 with less ex duration or area will be different and may prefer the taffs pipe.

[RICSPEED]

so what was the tune on the ts1 as a rule of thumb for this pipe?