Re: What did you do to or for or with your Laverda today?

[Laverdalothar]

CLEM,

you might improve the midrange by changing the needle position, but if you want to get rid of the drop, you need to change the exhaust. Learned that lesson well, no chance to get a good, constantly growing torque curve with the original Exhaust system. No freakin way, believe me.

cheers


Lothar

 

[markQLD]

Was beamed straight back to the mid 70's and could recall doing a lot of dumb things as a teenager.

Ok, so not much has bloody changed eh.    (dunno)

 

[Davo]

That is an interesting option for when the flasher unit fails.

 

[Terry Dymond]

Must be one of those jive-arse bikes with flashing 'look at me' strobes lighting up the night, all the go for cruising the Cross. (Sorry, only joking, couldn't help myself, I'll get my coat.)

 

[Tippie]

Was beamed straight back to the mid 70's and could recall doing a lot of dumb things as a teenager.

Ok, so not much has bloody changed eh.    (dunno)

Does anyone know how many 24 hour races that system there won?

 

[Laverdalothar]

How many would they have won with modern ignition...? 

 

[CLEMTOG]

thanks for replies guys

Davo, seems your question was answered by Chris, ie 12 ??,marks, will try again
????????????

Lothar, please see quote from my original text, but note that this is not "modifying" it is setting up a standard touring bike.
"so I will be decreasing the needles to aim for that all important 14:1,"

Nickdav7, certainly short of 40 (rear wheel) horsepower IF I find it, I will be getting close to 90, which will do nicely, but expecting around 70

CLEM

 

[Tippie]

Great retort Lothar, I wondered who would come with it. Modern in the early ?70s was generally pretty nasty gear when it came to pointless ignitions.
Has it actually been documented how many major endurance races the mighty twins did win?

 

[Tippie]

Well I got the road SF2 more on the way to it?s very own numberplate today. Met up with a fantastic bloke and his wife who do the noise testing for rego here, unfortunately in poor health now. Turns out he has a 668 which he bought new and has tens of thousands of trouble free miles on it, with the modded oil relief valve.
Anyway after freaking myslef out about the 86dba limit for rideby (Euro 14.01 or somesuch stipulates full throttle in 3rd over 20mtr from 50kmh, the noisemeter 7.5 mtr to the side, three runs for an average max 86dba) and making rolled perforated tube stubs wrapped in fibreglass mat to fit into my Conti copy Transac (Australian) mufflers (no junction tube). One for the front, one for the back and one for the centre section, all with a 20mm throughput. I came prepared. First run was with the front of muffer bits installed. "Way inside" he said, 77dba. So we did the runs with just the straight through Contis, which sound fantstic as they do, just to see how far over it would be after I took out the restrictors. "Just inside the limit!" Farken beauty, says I. 84dba on his meter, so that is what I can present to the traffic station next week and hopefully the mighty tip bike can get a bit of riding in in this absolutely incredibly sunny warm early autumn weather.

 

[Laverdalothar]

thanks for replies guys

Davo, seems your question was answered by Chris, ie 12 ??,marks, will try again
????????????

Lothar, please see quote from my original text, but note that this is not "modifying" it is setting up a standard touring bike.
"so I will be decreasing the needles to aim for that all important 14:1,"

Nickdav7, certainly short of 40 (rear wheel) horsepower IF I find it, I will be getting close to 90, which will do nicely, but expecting around 70

CLEM

Thanks Clem, I was sure you wanted "what ever is possible with original setup", which I respect. However, there is so much more fun in seeing how freely the bike revs with the right exhaust system...  Not talking about racing, simply overtaking is a no-brainer with it...

A standard RGS should still come close to the numbers printed in the papers (84 or 86 HP or so), even a SFC1000 in good condition reaches the 95HP easily. It even did with my crapy 3-1 System, but dropped midrange completely. The right exhaust was an improvement over the standard exhaust of roughly 20Nm in Midrange. That is really a lot...

 

[sfcpiet]

Does anyone know how many 24 hour races that system there won?

Possibly none... the works bikes generally had doubled condensers fitted!   Was probably a legitimate reason for that.

piet

 

[redax5]

spent yesterday mapping 180 cams, F1, 4C, 7C, A11, A12, Axtell, have some answers now but even more questions  ???
was going to do the 120 cams as well but then figured, why bother, no use to me
and it was raining as well so a very pleasant day in the workshop

 

[tom3c75]

Red, 

"Mapping the 180 cams"?   
Please tell us more.   

 

[chrisk]

spent yesterday mapping 180 cams, F1, 4C, 7C, A11, A12, Axtell, have some answers now but even more questions  ???
was going to do the 120 cams as well but then figured, why bother, no use to me
and it was raining as well so a very pleasant day in the workshop

Never seen a set up like that, but makes mapping easier with the encoder on the end. Good idea.

 

[Gravelroad]

Put a new rear chain/rear sprocket on the 3C yesterday. The old chain had started to stretch after a dropped spring washer incident, and was a bit stiff already. Quite apparent how much drag it had compared to the new one. As it was raining the hole day, good occasion to give rear wheel a clean. Gotta love those Borranis, frigging dirt traps they are. :-X

All forgotten by the nice ride I had today, excellent weather, bike running quite well. Revcounter needle passing 5000 and all hell breaks loose. Noice. 8) However, seems to run bit on the rich side at the moment, have to give them clapped out Dellortos a looksee (again). Might have to go for a better set of carb bodies. If someone has a good set of the clamped spigot type PHF32 bodies dusting around, I'd probably be interested.  :-*

 

[Terry Dymond]

Changed the fork oil on the Yellow Peril yesterday; 300ml of ten weight in each leg, also adjusted the steering head bearings so that the forks drop smoothly to each side without banging against the stops. No weaving or other signs of misbehaviour.

 

[Hambo]

Finally got the wee beastie out of the garage and off to the dyno for final tune up after new ignition and carbs....and the head gasket is blown.....so sent email to DAM Laverda...hoping to make it run for the Distinguished Gentleman's Ride 25th..anyone else doing this charity run?

 

[CLEMTOG]

Yes I am doing the London one, a great day out, have done it four times now.
a few of us go and just pay the suggested "?20"  fine which we put in a bucket, so around ?100 or maybe ?120
bit how comes I get lumbered with the collecting from our group?

I cant be doing with those sponsorship forms and then the resultant collecting, its a RRPITA!

"bit short see me next week ,
do you want a pint
got to buy wifey a new car
lost me job
cant break up this fifty
just going outside for a smoke
got caught by red cross/dog charity/oap day out fund/ etc in the high street
am skint (what you doing in pub then?)
etc etc etc"


no sireee its not for me


CLEM

 

[Sir Sidney Ruffdiamond]

Met up yesterday with an eclectic mix of bikes and people for a parts delivery for my restoration of a voxbell horn

Derek - on his 250 Ducati
Malcom- ( young at 81 years ) with his GSXR 750
Me - with the Corsa

 

[redax5]

Red, 

"Mapping the 180 cams"?   
Please tell us more. 

need to map existing cam lobe profiles so we can design the new R1 cams