Bucket update

[SHELRACING]

Cheers for that Dave

As it happens the standard carbs are 18mm.

I know John well, I will have a chat to him hopefully before the next meeting.

I'm going to give the Rd a run on the track on practice day anyway if I can finish it off before the 14th.

See ya in Nov if not sooner. Might take the RD down to Frosty's Taupo track day in Nov if it's running sweet.

Steve

Hiya. Equivalent to area of 24mm is pretty clear.

pi x D squared / 4 gives

for 17mm 226.8mm area thus x 2 = 453.7

for 24mm 452mm area

Close enough if there was a 17mm carb available.

John was talking about a submission to raise the 125 aircooled carb size to 28mm. 24 is too small to make competitive power against water cooled 100s with 34mm carbs. 28 is a better size, still a big restriction.

Prod John into action or offer to make a submission some how. I would be glad to help but haven't tried here as our club doesn't really care enough.

28mm = 615mm so a couple of 18s (probably std or use RG50 carbs) bored out slightly under 20 would be the go.

See you guys at the 2hr in Nov.

[F5 Dave]

Good man.

yeah I would like to take my 125 to the trackday if I go up with my project bike but I'm not booking anything until I know the 500 will be ready.

[ajturbo]

Hiya. Equivalent to area of 24mm is pretty clear.

pi x D squared / 4 gives

for 17mm 226.8mm area thus x 2 = 453.7

for 24mm 452mm area

Close enough if there was a 17mm carb available.

John was talking about a submission to raise the 125 aircooled carb size to 28mm. 24 is too small to make competitive power against water cooled 100s with 34mm carbs. 28 is a better size, still a big restriction.

Prod John into action or offer to make a submission some how. I would be glad to help but haven't tried here as our club doesn't really care enough.

28mm = 615mm so a couple of 18s (probably std or use RG50 carbs) bored out slightly under 20 would be the go.

See you guys at the 2hr in Nov.

see i told you it was easy!!

[Skunk]

see i told you it was easy!!

You're still lost aren't you?

[SHELRACING]

I suppose you're all siiting at your computers waiting to see a pic of the Honda RD 125, I hope you's all didn't loose too much sleep waiting.

So here it is

And the specs
Honda CB125twin frame, Forks - internals modified
Forkbrace
Yamaha RD125 twin motor, standard
Yamaha 17 inch wheels, Dunlop slicks
Suzuki gsx400 brakes
TZ seat
Total loss battery ignition, on the original RD Coils/points


Had the motor running yesterday sounds sweet. But dies when I give it throttle. Air filters are removed and it sound like it just sucks in air and starves itself. Does removing the air filters change the air/fuel ratio ??
Any ideas on fixing the problem please !!

Future changes
Replace the exhausts with some expansion chambers
CDI ignition

[CM2005]

wow, looks great!! bet its pretty quick!! godd to see you've come into the light and chosen a 2 smoker!! whats happened to the CB125T engine?? I've got quite a chassis for one....

[ajturbo]

wow, looks great!! bet its pretty quick!! godd to see you've come into the light and chosen a 2 smoker!! whats happened to the CB125T engine?? I've got quite a chassis for one....

OOOoooo i have a cb125 twin......

but i would try putting the air filters back on!!

or raise the needles


says AJ , who know just about.... nothing!

good to see that you have keept the standard pipes....!

[Sketchy_Racer]

well.. ladys, and gents... girls.. (ivan)

The purple flame is gonna be at next round to whopp your asses..

Be afraid, very afraid (im not bloody joking, im scared shitless)

BUT, at least it has brakes.. of somesort now

[speedpro]

If it dies right the moment you open the throttle you will most likely need to reduce the throttle slide cutaway. I've done it with devcon and it worked well. Make sure you rough up the bottom of the slide before you start work so the devcon has something to lock into. Raising the needle may help a little from about 1/8th throttle up to less than 1/2.

[Ivan]

well.. ladys, and gents... girls.. (ivan)

The purple flame is gonna be at next round to whopp your asses..

Be afraid, very afraid (im not bloody joking, im scared shitless)

BUT, at least it has brakes.. of somesort now

heheheheheehheehe

I know about this bike,

Your scared of our test track aye haha
Slideways Valentino Rossi style,

It scared me shitless and I jumped off it remember,

And I lost my hat on it


And also transvestists (glen)
Remember it even power slides on the road leaving black marks im impressed

[ajturbo]

If it dies right the moment you open the throttle you will most likely need to reduce the throttle slide cutaway. I've done it with devcon and it worked well. Make sure you rough up the bottom of the slide before you start work so the devcon has something to lock into. Raising the needle may help a little from about 1/8th throttle up to less than 1/2.

see told you i knew...nothing!!

this man knows EVERYTHING!!!

[F5 Dave]

hey Steve, yeah it looks very familiar, just can't put my finger on it

If you've removed the air filters on otherwise standard carbs you will likely need to re-jet through the range esp mainjet.

[Ivan]

Be Afraid with some luck the Aprillia GayX should make the enxt round I have one last little piece of welding to do and then slap a tank on which by the looks of it im gonna run a trike tank.


And then success at long last like over a year later


WOAAAAHH

Its been a long road

3 engines later and it could be complete in the next few days.

Im actually Scared


How can this be??????

[quallman1234]

Be Afraid with some luck the Aprillia GayX should make the enxt round I have one last little piece of welding to do and then slap a tank on which by the looks of it im gonna run a trike tank.


And then success at long last like over a year later


WOAAAAHH

Its been a long road

3 engines later and it could be complete in the next few days.

Im actually Scared


How can this be??????

How many times do i have to say this ... who needs a tank!!! Get a little steel canister :P.

I should have a bucket by next round

[SHELRACING]

Some of you may recognise the RD from last Christmas at Taupo, Rode it in the bucket class. It had the CB125T motor in it at the time... Shit that meeting was a blast. Looking forward to giving you fellas another hiding this year... Go the JAFAS

If anyone was wondering, The CB motor is not going up for sale. Going to hang onto it.

Dave can you give me a hint on jet size relative to what's in there already ?? Cheers..

Steve