ESE's works engine tuner

[jasonu]

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Attachment 227447

A comparison of a Honda RS125 (Blue) with TeeZee's (Red) and Speedpros (Green)

We had a 89RS and as standard it made 37hp on No.1 Cycles dynojet. A std 2001 RS125 makes 39-40hp. Even with a JHA A-kit they only make 45hp
Is the (what year?) RS you have graphed a standard engine? If it is I think your dyno is a little generous.

[TZ350]

A std 2001 RS125 makes 39-40hp.

This one is also a Dynjet, was your hp displayed in DIN or SAE.

Even with a JHA A-kit they only make 45hp Is the (what year?) RS you have graphed a standard engine? If it is I think your dyno is a little generous.

It wasn't our bike, and I don't know a lot about the various models and years but think it's 2008 or 09, one of the last anyway, and well sorted. There were also two kit cylinders with pipes and ignition combos tried on the day.

2008 spec from http://www.fatbaq.com/mainpage.phtml...05_rs125_specs

MAX POWER [44/12250] (ps/RPM) ......PS is the same as DIN and both are a little more generous than SAE

The 44 will probably be at the crank, so 44 - 42.9 = 1.1hp loss in the gearbox, I would have expected more losses.

So if the difference is not between displaying your results in SAE and ours in DIN/PS then maybe your right.

I have no idea how a DynoJet with Winpep6 software could be calibrated, but if there is a way I would love to know.

[wobbly]

Here is a very accurate RWHp dyno setup showing a very well tuned "stock" late model RS125 in green against a genuine A kit Honda - red with the PV held up and blue with the PV operational.
The difference between crank ( ie simulator or driven directly ) and a RWHp dyno setup is always between 10 and 12%, closer to 12 % id using say a Dynojet 168 with load control and 10% if its just a roller.

[TZ350]

Here is a very accurate RWHp dyno setup showing a very well tuned "stock" late model RS125 in green........

Thanks for the graph, it looks like our dyno might be under reading

or more likely the RS we tested was not as good as we thought .......

[TZ350]

For those interested in F5 and RG50's

R/H Crankcase Oil Seal p/n 09283-28013 $10 (or was 2 years ago)
L/H Crankcase Oil Seal p/n 09283-18004 $5
Gear Change??Oil Seal p/n 09285-12006 $7

Rod kits from later RG/RMX/SMX/TS/GT/RV/MT50 have oiling slots.

ConRod p/n 12161-04710
B/E Brg p/n 09263-16034
L/E Brg p/n 09263-12023
Pin p/n 12211-04711
Washer p/n 09160-16021

Wiseco Piston 826M04100 (std bore) Fits JR50 78-2004 and Kawa KDX50 03-04

The RG50 has only 3 thick clutch plates, 4 thiner TS/TF/GP100 or 125 and a steel will fit for a much better clutch.

Clutch cover gasket p/n 11482-13710 $22
Cly base gasket p/n 11241-04710 $14

If anyone wants to sell any RG50 engine parts or general junk, please PM me..........

[jasonu]

This one is also a Dynjet, was your hp displayed in DIN or SAE.



It wasn't our bike, and I don't know a lot about the various models and years but think it's 2008 or 09, one of the last anyway, and well sorted. There were also two kit cylinders with pipes and ignition combos tried on the day.

2008 spec from http://www.fatbaq.com/mainpage.phtml...05_rs125_specs

MAX POWER [44/12250] (ps/RPM) ......PS is the same as DIN and both are a little more generous than SAE

The 44 will probably be at the crank, so 44 - 42.9 = 1.1hp loss in the gearbox, I would have expected more losses.

So if the difference is not between displaying your results in SAE and ours in DIN/PS then maybe your right.

I have no idea how a DynoJet with Winpep6 software could be calibrated, but if there is a way I would love to know.

I didn't realise your RS was a late model (Avalons I assume) as your graph said 'old motor' and I assumed old motor ie pre 95. So your HP figures do make sense. Our figures are SAE so slightly less than DIN.
With all the different quotes from different dynos around the country it is hard to know who has what and who has the most.

[TZ350]

Yes, we are just learning about this dyno, being a Dynojet I guess the makers just expect average Joe blow to load a bike, rev it up and after pressing a few buttons print out a graph.

And at the mo we are pretty much their target market but would like to know a bit more about the system/software so we can feel more confident about the results.



Thomas and Bucket checking out the dyno software...........

[TZ350]

A Team ESE bike and enough information to make a copy of this GP125 engine.......

Video clip of Taupo RRS F4/Buckets, first practice on day one. 27-12-2010 Taken from my bike #54

How it went on the track.......

Details of how the engine was built…….

The engine........GP125, Ned's manages 23rwhp after these simple changes.............

The vids of it on the dyno can be seen here……

Running up NedKellys RS/GP125 on the dyno
This has port duration’s of, inlet 225, transfers 132, exhaust 202 degrees and an RM copy chamber...........

The Dyno graph……..

[TZ350]

Attachment 226307Attachment 226306Attachment 226303Attachment 226305Attachment 226308Attachment 226302

One week to go before Taupo and this is where I am at.

The engine vibrates real bad and I need to re-balance it.

As there is no one universally "correct" balance factor, there is only the one that works in your bike and it has to be found by trial and error.

Engine frame and suspension all affect how much you feel the vibration given off by the crank. The likely range of ballance factors that will work well with a high speed 2-Stroke seems to be in the region of 50% to 65%

The re-balancing sortof worked Ok and the vibration off pipe was greatly reduced and on the power 9K+ rpm it felt smoother.

At the moment the ballance factor is 48%, originaly it was about 70% and became about 36% after I plugged the original ballance holes with alloy plugs.

I would like to try 55%-60% and to get that, I will have to put a plug of Mallory metal or Tungsten in the flywheel opposite the bigend pin.

[Bren_chch]

How it went on the track...

oh fuck that looked good fun!!!!!!

[TZ350]

oh fuck that looked good fun!!!!!!

Hi Bren, That was NedKelly on his Team ESE Bike, how is your RG/KE100 project going?

Have you had any decent outings to find its leggs and how it compairs to the FXR150's and CBR's down your way.

............ .............

[TZ350]

In the interest of real world science here I would say that 27 RWHp from a 125 is nothing to jump up and down about.
Water cooled 125s with 30mm carb in ICC karts make 44RWHP ie around 50 crank at 13000,running a straight line ignition on unleaded.
If someones got enough folding I would soon knock up and guarantee an aircooled with 24mm carb that makes an easy 38crank = 32RWHp

I had a chat with Wobbly (by PM's) and what he outlined was certainly impressive. Anyone who has a good chassis and some $$$ for motor work and Wobblys time should talk with him as he could certainly design them something special, and it would be very very impressive........

[jasonu]

I had a chat with Wobbly (by PM's) and what he outlined was certainly impressive. Anyone who has a good chassis and some $$$

Some $$$ = ???

[k14]

Thanks for the graph, it looks like our dyno might be under reading

or more likely the RS we tested was not as good as we thought .......

I put my 2001 RS125 on the dyno at Ashburton (dynojet) and that had 41.9hp. That was probably the quickest in the country at the time, no one was running aftermarket kits on them and my engine was standard. However running aftermarket expansion chamber, total loss and a few other mods.

[koba]

How it went on the track.......

It was Waaay fast. Very impressive, makes me want more power and an RS frame.

If I win lotto Mr Wobbly can expect a blank cheque.