Will I get my 100 ready in time for Taupo?

[F5 Dave]

So I made some ally adaptors & glued them to the pump last night, will attach it tonight hopefully.

Hmm glue drying. water out might as well fit the det sensor to the head with some loctite in the threads so it hopefully seals. I'll rig some temp wires to power it, but I need to do job properly later so it is removable when taking the head or the instruments off, - just its shielded wire.

I could see if I could whip up a bracket for the quick shifter sensor. . . with a few tweaks it is hopefully in the right position. An LED lights up when it is activating as the linkage comes forward & there is a good 5mm side clearance so it shouldn't get clouted.

Along with the shift light there will be enough on board entertainment on the dash, - why worry what is going on on the track?

Talk about techno bucket.

[F5 Dave]

Ok Chris &Jase, laugh yah bar studs. Head held for a few runs &then started to drip from the front. Still it showed some promise of a healthy gain, but I might need to get it welded and hope it doesn't go too soft. Deciding whether to try patch it for Sunday or just run water and top it up. Lost 50cc over many runs testing which was about 1cm down the rad.


Quick shifter works but needs some time on triggering so will have to wait for setup.

[F5 Dave]

Well quick look and test. No leaks. WTF? Ahh seems the chemweld clogged my pump hose. Blew that out and leaks aplenty. Ground some trenches and re glued. Hope holds for Sunday

[husaberg]

Don't know what product you are using, but many moons ago we used to use a Chesterton product (not sure which it was) but it was used for Dicast chainsaw poo metal. That was unweldable
http://www.matweb.com/search/datashe...c6c8e7797a1c91

[F5 Dave]

JB Weld this time, people use it for 4stroke inlet ports so should easily cope with temps

[mr bucketracer]

pays not to make a head out of devon

[koba]

pays not to make a head out of devon

Yes, otherwise one would have a mighty large head:
http://en.wikipedia.org/wiki/Devon

But it would be quite 'Torquay'.

[jasonu]

Ok Chris &Jase, laugh yah bar studs. Head held for a few runs &then started to drip from the front. Still it showed some promise of a healthy gain, but I might need to get it welded and hope it doesn't go too soft. Deciding whether to try patch it for Sunday or just run water and top it up. Lost 50cc over many runs testing which was about 1cm down the rad.


Quick shifter works but needs some time on triggering so will have to wait for setup.

But will it last a race meeting???

[mr bucketracer]

just cast a new head , 3 hours to make some paterns

[Drew]

just cast a new head , 3 hours to make some paterns

I might be falling victim to bucket racers sarcasm here, but is that realistic?

I expect a lot of chopping up of a head that almost works now, to fuck it and maybe end up with bung moulds and no head at all.

Dave, did Sketchy go about water cooling his MB in the same fashion you are?

[F5 Dave]

But will it last a race meeting???

Don't know. I've trenched & glued & retested this morning. Leaks are 10% of what they were. Will redo one bit tonight & should be sound enough.

Will it deteriorate during the day? I'll keep a check & its only a fun day so a good day to test. Have the 50 there so can ride that if I'm losing water. there is heaps in the system & the pump is near the bottom & has a good head so it won't burn out the head.

[F5 Dave]

pays not to make a head out of devon

thanks, remind me to laugh at your misfortune.

[F5 Dave]

I might be falling victim to bucket racers sarcasm here, but is that realistic?

I expect a lot of chopping up of a head that almost works now, to fuck it and maybe end up with bung moulds and no head at all.

Dave, did Sketchy go about water cooling his MB in the same fashion you are?

I think he turned it & o-ringed, he had offered me it to use, but I wanted to press on with my own shape chamber + mine is doweled. I'd been avoiding doing the full weld as you can make the ally so soft it just warps & leaks pressure & warps again. Can heat treat them but done properly that costs quite a sum of money.

I have a nice billet Sketchy gave me a while back that I could have used but this looked easier.

[mr bucketracer]

thanks, remind me to laugh at your misfortune.

you will have you chance if you alread have not. do you think the head casting of ziffles bike would work ?

[F5 Dave]

One of the other reasons for keeping MB part was the headstay is still used, but thanks anyway, I did make up a bolt on one, but I'm back to the MB through head nut-bolts as long studs (from case to top of head) were a pain on last engine.