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Supercharged 1100 Oilboiler


Nickel

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1 hour ago, Nickel said:

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One issue I can see is belt tooth to tooth contact over the tensioner. The untensioned side will flap about - its scary how much they do - didn't occur with the original Sims & Rohm due to the poly Vee belt used. Obviously a bit of wear and increased tension makes the situation worse - certainly a shorter belt and getting the tensioner at least 3x the difference?

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1 hour ago, Nickel said:

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One issue I can see is belt tooth to tooth contact over the tensioner. The untensioned side will flap about - its scary how much they do - didn't occur with the original Sims & Rohm due to the poly Vee belt used. Obviously a bit of wear and increased tension makes the situation worse - certainly a shorter belt and getting the tensioner at least 3x the difference?

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Put the motor into the frame to check the situation with the carb. The plan is to use a Mikuni HSR. Carb colides with the bottom of the gas tank. Have to make a cutout in the bottom to get the needed space. DSC_6614.thumb.JPG.4c4f958c9ec8ca7003365b51045fc22a.JPG

Afterwards drilled a flange for the engine case to hold a shaft sealing ring. 

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With a belt with 3 teeth less than the actual one, I will have enough clearance between both sides of the belt. 

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I realy would like to know what carbs they used in the old Sims and Rohm kits.....

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I know it's also Mikuni, but no idea what type.

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More work to do than expected. xD

 

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Okay, thanks for the info. Never heard about PHH carbs. Have done a little bit research. Only found info and pictures of carbs with two throttle bodys. The connection flange on the charger seams to be for a carb with one throttle body. 

Yes it's a HSR 42. Made good experiences on my Turbo Kwakisaki with this carb. 

 

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1 hour ago, dupersunc said:

The phh was a twin choke carb.

It was indeed. There is one pish poor picture in an early edition of a Joe Haile Turbo Bike magazine. Not a bad carb but largely unheard of in the 'West' LOL!

If you are tight for space - a Weber DCOE 40 would fuel it perfectly and it's quite shallow like the PHH ?

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re - belt:

You are obviously  using a "880 - 8m" probably even a HL version "Hoch Leistungs" or high performance for most of us.

You now have 110 teeth.. if you want 3 teeth less: you will end up with the 856 - 8M HL from the Optibelt omega series. This one has 107 teeth (and working length 856)

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A good mate has pulley with 32 teeth left. So I will go that way, before ordering a new belt. But thanks for that hint @Blubber(y)

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I will have to have a closer look to the situation with the carb. It's very tight. If I have the carb centered to the intake of the charger in the same angle as the charger intake, the carb intake will collide with the braket of the seat. In my opinion it would be better to have the carb oriantated upright. 

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Ordered a rubber manifold for the carb today. After receiving it I will try to drill and mill an adapter flange. 

Thanks for your help guys. :banana:

Great to be part of this amazing community. :pimp:

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  • 2 months later...
  • 3 months later...

With this setup with supercharger, is the power coming in like normal, but a lot more?

I understand that when you use such through turbochargers the powerdelivery is more like a 2 stroke..

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That carbie, does the slide run over bearings? Slide in 2 parts?

I had a 42mm carby, Mikuni used on Harleys, on my DR500, awesome carbies, ran really well, that acceleration pump works well too.

Edited by Reinhoud
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