darmah with 40mm dellortos is it worth it?

machten · Post by **machten** » Sun May 03, 2009 5:42 am

That's an interesting description. I would have thought a BMW is refined. How is an SS more refined than a Darmah? Rawer, yes - refined, no.

Taking the bait...

Kev

nottonight68 · Post by **nottonight68** » Sun May 03, 2009 6:00 am

ok kev-bait taken
macquarie dictionary--refined
1-imbued with or showing nice feeling,taste
2-free from coarseness,vulgarity
3-free from impurities
4-subtle
5-minutely precise,exact

end of story really-sounds like the super sport to me--not the drama

bm1

machten · Post by **machten** » Sun May 03, 2009 6:05 am

Steve,

Well done! Where did an SS owner find someone to read the dictionary for them so quickly?

Kev

nottonight68 · Post by **nottonight68** » Sun May 03, 2009 6:17 am

methinks this thread has drifted off topic-to be continued in another place

bm1

machten · Post by **machten** » Sun May 03, 2009 6:19 am

yep. good thinking.

Kev

lomax · Post by **lomax** » Mon May 04, 2009 4:07 am

Hi there,

my '80 Darmah is equipped with 40 mm carbs and starts and idles very good - can't be better ! High end performance with Contis is great > 200 km/h ! Torque at low revs is fine with Lafranconis and gets worth with Contis, but is still o.k.. It runs well with both set ups, the engine always feels good and always delivers performance. Even in town it is good to drive.

May be you just need to find the perfect set up of the 40mm Del'Lortos - then you would not think about changing to the 32 mm carbs.

In 1979 the main german motorcycle newspaper "Motorrad" claimed the 40mm carbs would be better than the 32mm carbs in any manner !

See/listen my Darmah after 13 years of rest - 40 mm carbs fitted:

http://www.youtube.com/watch?v=w1hIWFWHnlo

Have fun

Joe

Pescara · Post by **Pescara** » Wed May 20, 2009 5:01 pm

Martin Mille / SSD wrote:True the SD engine is much the same base engine , but the SD never had the polished Rod's that all SS had from the beginning , and apart from the weight and length of the bike that is about where the similarities stop

Late SD's had the polished rods, for instance the '83 blue-paint-with-silver-stripes SD that I rebuilt a few years ago. It came that way too - a friend bought it new and I cut the lead seal between the case halves. Late SD's had 78-on style SS engines with electric start and smaller carbs. The deeper SD-specific cost cutting stuff was changed to SS-spec over the Darmah's production run. This must've been done to simplify manufacture of different models using the same basic powerplant.

Otherwise, I agree - for instance the SS frame works better than the Darmah's frame. The same is true for a 750 GT. SS or 750 GT frame designs with lugged engine mounts steer in a more refined way than the stamped frames that started with the 860GT.

lomax · Post by **lomax** » Tue Jun 09, 2009 4:43 am

My 80 SD has 40 mm PHM carbs with "flush pins" (how is this called in English ? - in German we call it "Tupfer").

How long should it usually take to press this "Tupfer" until the fuel spills over ? Right now it works instantly - before adjusting the float it last 4-5 seconds.

Cheers

Joe

garryc · Post by **garryc** » Tue Jun 09, 2009 5:00 am

Ticklers,
someone, i think on bevelheads list told me to count to 12

MartinMille BANNED · Post by **MartinMille BANNED** » Tue Jun 09, 2009 5:19 am

I used to do it that way , now'a days I push up and down until they start to squirt fuel from the top overflow as soon as they do that two full throttle squirts and away you go

lomax · Post by **lomax** » Tue Jun 09, 2009 5:20 am

Thank you Garry - I wonder, if 12 sec. is not too long

Best regards

Joe

lomax · Post by **lomax** » Tue Jun 09, 2009 5:29 am

ups.....Australia is awake

I did push the tickers a few times too back then, but it should not make a difference, since you just open the float valve. It might even enhance the wear on the floats plastic surface

I will get a workshop manual especially for Dell' Ortos (in German) soon. Hopefully I will find every information I can think of.....

Cheers

Joe

MartinMille BANNED · Post by **MartinMille BANNED** » Tue Jun 09, 2009 2:24 pm

From the Workshop manual , and its pretty much what I do

Page 49.

Starting

To start from cold, the (d) flooding-plunger should
be pressed five or six times, lightly opening the throttle

I extremely cold conditions, it is advisable to open the
throttle once or twice, so that the accelerator pump can
squirt extra fuel into the inlet, making starting easier.

abmartin · Post by **abmartin** » Tue Jun 09, 2009 3:46 pm

The float position can easily be adjusted to either slow or accelerate the flooding process. All that is required is to bend the metal tab on the float. Moving it down slightly opens the float bowl inlet valve more quickly, thus reducing the time required for the bowl to overflow through the plunger. Bending it up reverses the proceess.

I just did this last weekend since my bike's front carb refused to overflow, causing the bike to only run on one cylinder at start-up.

The Dellorto manual in English is widely available on the web.

Bruce

garryc · Post by **garryc** » Tue Jun 09, 2009 4:43 pm

Not 12 seconds, count to 12 not sure whether it is slower to count in german