Will I get my 100 ready in time for Taupo?

**F5 Dave** · 11th October 2011, 08:28

um, RS ign, think I had to recut the taper, or rather Melmac did it & stuffed it up & so I 10 years later refitted it much further in on one of my aborted attempts to right this pigs ear.

So off tot he dyno with hopes that the borrowed ign would unleash untold power.

oh well, maybe it wasn't the ign. At the end of the day I've lost 4hp & despite changing the ring, reeds & every ign & jetting combination, I can't get it back, so its off to BOB with 16hp. hardly fearsome. If I had time I'd glue the cases together with Devcon & replace the seals. might do that for the GP if it survives. So leaps & bounds, -all in the wrong direction. I've just printed out the new pipe design & bought some server siding to make it out of & found a mate who can form the cones. None of which will be much help until the cases are sorted.

I have spare cases of course, just they won't fit in the bike.

**husaberg** · 14th October 2011, 18:59

Originally Posted by F5 Dave

um, RS ign, think I had to recut the taper, or rather Melmac did it & stuffed it up & so I 10 years later refitted it much further in on one of my aborted attempts to right this pigs ear.

So off tot he dyno with hopes that the borrowed ign would unleash untold power.

oh well, maybe it wasn't the ign. At the end of the day I've lost 4hp & despite changing the ring, reeds & every ign & jetting combination, I can't get it back, so its off to BOB with 16hp. hardly fearsome. If I had time I'd glue the cases together with Devcon & replace the seals. might do that for the GP if it survives. So leaps & bounds, -all in the wrong direction. I've just printed out the new pipe design & bought some server siding to make it out of & found a mate who can form the cones. None of which will be much help until the cases are sorted.

I have spare cases of course, just they won't fit in the bike.

You wouldn't be foxing with the HP would you Dave?

**F5 Dave** · 15th October 2011, 19:58

& no, it turns out I wasn't. Diesel estimated about that looking on from the start finish straight. Still fun thou.

break out the Devcon, I'm gluein those cases together. + a coupld of seals wouldn't go amiss, they are 16 years old.

**husaberg** · 15th October 2011, 22:04

Originally Posted by F5 Dave

& no, it turns out I wasn't. Diesel estimated about that looking on from the start finish straight. Still fun thou.

break out the Devcon, I'm gluein those cases together. + a coupld of seals wouldn't go amiss, they are 16 years old.

Why did you leave in the balance shaft Dave it kind of confuses me that bit Also did you see the Aprillia 125 cylinder on Trademe a while back it would have looked sweet on your motor. I can't understand why your would only make 16hp because they would be 10-12 std wouldn't they.
Also when are we going to see some inside pics of the motor.

**F5 Dave** · 17th October 2011, 08:27

I left the ability to run the balance shaft as I'd ridden ones that vibrated like a bitch. Doesn't seem too bad without it though, the rubber mounts will no doubt be helping there.

Carburetion becomes unpredictable, bike runs rough, power drops. Changed the ignition & maybe it helps in some areas, but not really top end. I knew it already leaked air, I think it is just much worse now.

Must order some new seals.

**husaberg** · 20th October 2011, 16:44

Originally Posted by F5 Dave

I left the ability to run the balance shaft as I'd ridden ones that vibrated like a bitch. Doesn't seem too bad without it though, the rubber mounts will no doubt be helping there.

Carburetion becomes unpredictable, bike runs rough, power drops. Changed the ignition & maybe it helps in some areas, but not really top end. I knew it already leaked air, I think it is just much worse now.

Must order some new seals.

For some reason other People have also said that with Mb100 vibes bad with the balance shaft out. The other H100's I have herd off and used seem quite smooth without them. Maybe the balance factor is different.
Mick says the NSR500 steered better with one in it.
But he had a single crank 500 four I guess.
Lessened Gyroscopic force with the contra-rotating Balance shaft supposedly. When they later went to the non big bang (original Configuration) engine they still kept it.

Re sealing the cases Had you considered trying the stuff they use for petrol tanks?
Petseal or something like that?
Are we talking porosity or big gaps?

**F5 Dave** · 22nd October 2011, 13:08

We're talking shitely welded bent cases. Devcon it is, & hammer to remove any remaining good bits when I've done the next one.

**F5 Dave** · 27th October 2011, 11:13

We don’t you just love pulling stuff apart & saying “gee whoever was here last was a butcher”? Not so much when the last person was yourself though.

The cases are apart, with a disturbing amount of ally in the gearbox oil. No sign of where it came from so I have to assume it was ground stuff when the cases were originally cut & welded 16 years ago. Must have been hiding somewhere (like behind bearings, groan).

More muppetry, the RH crank seal was in backwards. Although that probably isn’t a show stopper as there are springs in both sides of the seal so it should hold pressure both ways just fine.

What I was surprised about was the filler I’d put in the boost port was horribly uneven mid port. I think in my haste I thought I was going to file it smooth later & just looked at the entry & said, well that’s all done & didn’t grab a torch.

So that’s all sorted now, with a bit more case porting to make the inlet a bit better. The new seals arrived this morning, I could have it all back together in the weekend. . .. Of course there a trail ride on Sunday. . .

**F5 Dave** · 29th October 2011, 20:30

Well its glued together. Sheesh there is a heap of grooving where the crank seal is on the crank, not sure if my new positioning misses it or not.

Should be assembling the rest of the engine now. but can't be bothered & trail riding tomorrow,

Will it be ready for Taupo?!??

**koba** · 30th October 2011, 20:32

Ready is a term that can be applied to a large spectrum of preparedness...

**F5 Dave** · 30th October 2011, 20:38

meh, trail ride was a bit lame, but came home early & ended up working on tv aerial instead of bike. Did bore out a hole for the head stay bolt that fractured in the BOB. Making up a new double sided bolt/nut arrangement there. Maybe put it together tomorrow,. . .

**Sketchy_Racer** · 30th October 2011, 20:59

Did you go on the brooklyn trail ride Dave? I was gonna go, but woke up to late. You going to the one next weekend? Was that ignition any cop?

**F5 Dave** · 30th October 2011, 21:15

I did one loop & packed up the bike, mostly transport sections. Totally ghey.

I'll be at Taupo gp next weekend.

that ign was um, a bit better. Didn't rev as far though. Strangley got rid of the dip, but it could have been that it just didn't rev past that point.

-but thank you so much as the bike ran the whole BOB just fine whereas I couldn't get it to run clean on the old ign. Came in fourth, not bad with just 16hp at the time.

That plate was a pain to change the timing on though. 'course Karl suggested using a piece of card between the rotor to space it before doing it up. duh! I hate smart arses that are actually smart.

But I'm making a new plate & I have an RM80 one to go on I've had for ages. I'll drop your one off in a week, cheers.

**F5 Dave** · 1st November 2011, 08:43

Well this is going from bad to worse. So here I am less than a week to go & I've got the engine together.'

but with no piston fitted. I tried it & it leaked like a Greek ferry. Retried a few things, filing errant Devcon that shouldn't be a problem. but applying more to the back of the barrel where the reedblock was removed. Waiting for goop to dry & test again.

but the nasty surprise was looking at the front of the piston & noticing a tear in the skirt. ooohh dear. There's me not doing the GP. Bugger bugger, no time to get another piston, but wait, that old engine came with a 0.25 oversize. Rummage rummage. ok here it is.

Hmm, sand off the seize marks. Well look, Sir has had a go at porting by filing the piston. Neat, there goes any useful squish area & I didn't really want more transfer timing. Look at the other piston. I wonder how long that would last before the skirt came off??? Nah, I can't do it. 2nd hand piston it is. Out with the saw & grinder to modify it.

Time on the lathe to make some spacers for the ignition plate.

So this thread is really taking some action. Will I really be ready for Taupo??

Heck I used to be organised, but this is really becoming more & more 'Bucket'