F5's 100 is for sale

[F5 Dave]

MBRS 100

Can't believe I'm doing this looking at the pictures.

Unfinished business. That’s what I figured I had with this bike. But with several other projects including a Bucket build for a mate, I’m just not getting onto it. Maybe it’s time for someone else to take the reins.
So, RS125 chassis with some (reversible) mods to make a normal size chap fit. MB100 engine converted to Full crankcase reed, watercooled and triple exhaust ports. 6 Speed gearbox. Extra plate clutch.
Ignitech ignition, high output CR250 Stator/Rotor, Intercooler waterpump, RS radiator. 32mm RGV carb. Optional 35mm bored out RGV carb fitted with home-made solenoid powerjet that I never had time to fully commission. Destroked crank and easily sourced KT100 kart piston. Fitted for quickshifter which is a boon on tight tracks. Needs the switch re-setup, but I have a spare.

It goes well, I’ve only faced one bike that could match it for straight line speed. It’s won bunches of races, sadly never a BoB although it has lead more than once (& I did win the CAMs trophy before) and held track record at Taumarunui. All with some fat old bloke on it.

I did have crank issues on the longer tracks but since machined the webs so a standard pin could be run rather than the stepped one that broke a couple of times. It’s been fine since. The stator & ignitech sorted out ignition problems I was having. Try find one.

Best dyno run on realistic dyno was 27.5hp. I lowered the transfer port floors to match piston @BDC and fitted inserts to make sweeping transfer inners. And lost 1hp. I’m pretty sure now that I’ve taken too much volume from the ports and grinding the easily reached outers would pay back this power and a bunch more.
The Pipe I now realise disobeys several rules of thumb and a better pipe should easily crest 30hp mark.

But I’ll never get around to it. While this is a push and go bike it needs someone who knows how to fettle 2 Strokes, feed it AvGas & decent oil, replace the occasional service part & ideally bring its potential above the weapon it is now. Last race I lent it out it got 2nd in the Wellington Enduro event. The tyres are somewhat old. Brakes & RS suspension are good.
I don’t want to be greedy, but this is prettied up FXR money $2800.
Oh yeah it could really do with a pretty up. I got some bright yellow paint, but you guessed it, - never got around to respraying it. Comes with full fairing as well.

[F5 Dave]

More pics


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[F5 Dave]

And one more. Have a better one I'll add with fairing on.

Hmm might have to wait until tomorrow. Not loading from phone.

Yeah front tyre looks pretty suspect . But heck I've seen some real prettied up mingers for this sort of money. It flies past normal bikes esp on longer tracks. Obviously it's pretty unflappable with the RS chassis. Wheels are the genuine HRC RS units which are shot loads lighter than NSR.

Maybe I should ask for more money. But I want it to go to the right person. Maybe I'll just be picky.

[F5 Dave]

Well this is awkward. My 50 sold in 3 minutes on a Sunday night. Guess it's dinner time.

[TALLIS]

Thought malcom would be a starter. Is there a spare set of rims with it?

[F5 Dave]

Did think of him. But he has his own path. That said he's got the skill to ride the thing.

[mr bucketracer]

time to buy a fxr is it (-; , good bike for the right person

[F5 Dave]

Yeah I can't really race until my daughter is. Well if she ever becomes self sufficient.

[jasonu]

MBRS 100

Can't believe I'm doing this looking at the pictures.

Unfinished business. That’s what I figured I had with this bike. But with several other projects including a Bucket build for a mate, I’m just not getting onto it. Maybe it’s time for someone else to take the reins.
So, RS125 chassis with some (reversible) mods to make a normal size chap fit. MB100 engine converted to Full crankcase reed, watercooled and triple exhaust ports. 6 Speed gearbox. Extra plate clutch.
Ignitech ignition, high output CR250 Stator/Rotor, Intercooler waterpump, RS radiator. 32mm RGV carb. Optional 35mm bored out RGV carb fitted with home-made solenoid powerjet that I never had time to fully commission. Destroked crank and easily sourced KT100 kart piston. Fitted for quickshifter which is a boon on tight tracks. Needs the switch re-setup, but I have a spare.

It goes well, I’ve only faced one bike that could match it for straight line speed. It’s won bunches of races, sadly never a BoB although it has lead more than once (& I did win the CAMs trophy before) and held track record at Taumarunui. All with some fat old bloke on it.

I did have crank issues on the longer tracks but since machined the webs so a standard pin could be run rather than the stepped one that broke a couple of times. It’s been fine since. The stator & ignitech sorted out ignition problems I was having. Try find one.

Best dyno run on realistic dyno was 27.5hp. I lowered the transfer port floors to match piston @BDC and fitted inserts to make sweeping transfer inners. And lost 1hp. I’m pretty sure now that I’ve taken too much volume from the ports and grinding the easily reached outers would pay back this power and a bunch more.
The Pipe I now realise disobeys several rules of thumb and a better pipe should easily crest 30hp mark.

But I’ll never get around to it. While this is a push and go bike it needs someone who knows how to fettle 2 Strokes, feed it AvGas & decent oil, replace the occasional service part & ideally bring its potential above the weapon it is now. Last race I lent it out it got 2nd in the Wellington Enduro event. The tyres are somewhat old. Brakes & RS suspension are good.
I don’t want to be greedy, but this is prettied up FXR money $2800.
Oh yeah it could really do with a pretty up. I got some bright yellow paint, but you guessed it, - never got around to respraying it. Comes with full fairing as well.

It is truly a sad fucking day!!!!!!!!!











Five buck and a bag of chups......

[Bert]

It is truly a sad fucking day!!!!!!!!!


Five buck and a bag of chups......

Sorry to read this Dave. You have been a stalwart of the class.
I hope she goes to a good home as it's got plenty of top running years left in her.

[F5 Dave]

more pic

.zj.cdbld

[chrisc]

If I didn't own the TZ, I'd definitely take this off your hands Dave but I have other things on the go. I hope it goes to someone who will do it justice!

[F5 Dave]

Well I certainly never regret selling you the 50.

Looking at welders, which is kinda the reason I thought about all this. My $300 8yr old Repco MIG has annoyed me for the last time.

And maybe if I found a cheap RD400G project but have to be a bit lucky there.

[Drew]

And just like that, the bucket track has become infinitely more appealing.

[jasonu]

And just like that, the bucket track has become infinitely more appealing.

and a little less gay...