Bucket update

**Skunk** · 12th March 2006, 22:08

Originally Posted by k14

motogp testing this weekend i think so we'll have to wait a few more days for the update

Is he checking out chassis and powerplants?

**Ivan** · 13th March 2006, 18:46

Originally Posted by Skunk

Is he checking out chassis and powerplants?

Scoring a deal with KR Proton

**Ivan** · 13th March 2006, 18:48

YEAHITLL BE ON THE TRACK mitecome to your house this weekend glenn

**Sketchy_Racer** · 13th March 2006, 19:54

Ok then....

Bring ya DR so we can go for a ride.......

**Ivan** · 14th March 2006, 17:10

Nah no tow ball on Civic so will have to use the RMX

I should have about 20 bucks for fuelso I think were all go and then I can get to work on buildin mounts for the RS125 with a TS

**Sketchy_Racer** · 14th March 2006, 19:34

PSH!!!!! YOU ON A 250 2S........ get faaaarked...

Have fun welding alluminium.....

**Ivan** · 15th March 2006, 17:31

I rode a 05 RM 250 faster than your RMX trail bike buddy

**Ivan** · 28th March 2006, 20:06

The CT 125 has had a XR200 head and cam added which the head has had the ports reshaped and smoothed valves got lapped in timed and today at Tech we took it outside gave it half a dozen kicks a big bang possibly a back fire? and then it fired into life idling away but the base gasket must have a rip because the oil started leaking which sucks so now I am as happy as a sandboy it runs better with the 200 head and cam than the standered 125 one no carb adjustment at all it was mint

Im really stoked that all my hours of hard work and swearing cam through now im gonna bring it home and modify the exhaust pipe

Also I have started working on my TF100 suzuki which is going to fit in a RS125 honda chassis. I'm really stoked I just now need some port specs for a TF100 barrel cant get hold of Bert he seems to have disappered right of the face of Kiwi Biker

**Bert** · 29th March 2006, 08:15

Not quite.
I've dug out the clutch (yea i know I'm slack but have been tripping around the world with work)

I've got another barrel that I'll send you as well and you can copy the porting.
now I promise I'll send it all tomorrow (thursday)

**Ivan** · 29th March 2006, 18:23

Sweet as well you slipped right ofthe face of New Zealand then were the heck did ya go

**speedpro** · 30th March 2006, 22:11

I had a TS100 that went pretty good. Made 19.9hp 15 years ago and it was big and fat. The basic specs said it should have been a peaky monster but it wasn't. It had 200deg ex port duration, 200deg intake port duration, and I think around 132-135deg transfer port timing. It ran 14.7:1 compression. I completely devconned over the intake reed valve to make the intake a nice smooth thing from the 32mm carb right down to the piston. With the extra intake timing there was no need for the intake reed valves and I figured they just upset flow in the port. So it was a pure piston port motor. I spent ages getting the exhaust and intake port shapes "just right". Pete Sales did the transfer ports. Even only revving to about 11,000rpm it still ate pistons even though I was using RG400 rear cylinder pistons. Another issue with these motors, even if you use the TS125ER bottom end, is that the gearbox is useless with a gap between 3rd and 4th. The clutch is marginal as well. Compared to say a Honda MB100 the crank is agricultural but with good phenolic cage bearings with C3 clearance they seem to last OK. For some reason, even though the combustion chamber had near identical dimensions to ones I used later, and I used the same ignition system, it also had an appetite for plugs. I used to change the plug and piston every second meeting.

What I'm getting at is - Don't expect too much from these motors, and even then it will take a lot of very careful work. Get a torque wrench for the head studs as well or you will pull them out. Prepare to throw parts at it if you get serious.

I wouldn't bother going to ALL the trouble to fit one of them into an RS chassis.

**Ivan** · 31st March 2006, 10:12

Yeah sweet as but from the ones I have seen both of RG100's TF's they seem to go like snot and also last for ages. Bert he hasone andis only having a big end bearing issue but his one will be fast as well did you ever think that with upping the compression so much is going to cause the piston to travel higher andwhen it finally combusts it is going to have so much force being pushed on the piston that you will blow holes straight through the top and about the spark plug go to a hotter plug.

Any way I got my parts today from Bert and am going to get my barrel ported tommorow and get the puppy runningI have also been told that the engine mounts toan existing RS mount which I was happy with

**Ivan** · 2nd April 2006, 14:05

Here they are the pics of it,

Abit of a update it is running XL200 head and tappet covers and it sounds nice when it runs except the valve springs and valves are on there last legs and click abit now and thenbut it runs which is the main thing

**speedpro** · 3rd April 2006, 12:32

Originally Posted by Ivan

as well did you ever think that with upping the compression so much is going to cause the piston to travel higher andwhen it finally combusts it is going to have so much force being pushed on the piston that you will blow holes straight through the top and about the spark plug go to a hotter plug.

Compression doesn't alter the stroke and therefore how much the piston travels. As for the force bit - that is more or less what the aim of the whole exercise is, to create as much push on the top of the piston as possible. Unless the piston is faulty it is never going to push a hole in the top. Once you start making horsepower and running hard the motor will need a colder plug. I ran a "9" series plug. On the kart tracks I ran an "8" a few times. It made no difference to how long it lasted and looked a bit hot for comfort. I also ran an "8" on a faster track once (accidentally) and I got a little fuzzy edged crater in the middle of the piston.

Getting back to compression, my current aircooled motor runs 15.3:1. The new watercooled motor runs less as supposedly (and hopefully) with all the trick porting and pipe there will be more gas jammed into the combustion chamber and the compression ratio had to be reduced to compensate.

**Ivan** · 3rd April 2006, 14:24

Originally Posted by speedpro

Compression doesn't alter the stroke and therefore how much the piston travels. As for the force bit - that is more or less what the aim of the whole exercise is, to create as much push on the top of the piston as possible. Unless the piston is faulty it is never going to push a hole in the top. Once you start making horsepower and running hard the motor will need a colder plug. I ran a "9" series plug. On the kart tracks I ran an "8" a few times. It made no difference to how long it lasted and looked a bit hot for comfort. I also ran an "8" on a faster track once (accidentally) and I got a little fuzzy edged crater in the middle of the piston.

Getting back to compression, my current aircooled motor runs 15.3:1. The new watercooled motor runs less as supposedly (and hopefully) with all the trick porting and pipe there will be more gas jammed into the combustion chamber and the compression ratio had to be reduced to compensate.

O Tru, I Have my ported barrel from Bert so I am getting taught this weekend how to do it and then I can give Bert back his Barrell I am then going to design a chamber for it learning from a few things Eric Gorr's site and can kinda remember A Graham Bells book might see if I can borrow it again for another read I am putting the bucket to the side at the momment as I am working on a GT185 road bike for a family friend and also am getting our Z50 Honda running

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