Topic: Drouin Supercharger

[Ricky_Racer]

I had a Magnacharger 110 but I sold it to a guy who plans to mount it between two Triumph twins... I decided that the 110 was too large for the CB750, and I also live close to Fagol Superchargers. I've spoken with Mark Fagol regarding building a complete package for the CB750 but decided that the setup costs would be too much for me for a single build. It's a witch being poor! 

Anybody out there have "deep pockets" and wanna play Venture Capitalist? RR

[23tbucket]

Ricky Racer: I used an "Asin AMR500" supercharger on my SOHC 750A. It is an excellent little positive displacement supercharger. Fairly easy to fit in with good four point mounts. It can turn in either direction. I run mine at crankshaft speed, but you can run these over for some real heart thumping. I bought mine through "Japan Auction" quite a few years ago for less than $500.00. This fellow sells these regularly on ebay:
http://www.ebay.ca/itm/360827489448?ssPageName=STRK:MEWAX:VRI&_trksid=p3984.m1438.l2661

[23tbucket]

Here is a video of a SOHC 750 hillclimber with the Asin supercharger:
CB750 supercharged Hillclimber

[joesmotos]

Oh yeah baby....i likey that

[cbornotcb]

Well, that was a TEASE, just as the wrinkles were disappearing, the clip ended, is that what "coitus interruptus" means ?
Tiny

[Don R]

I'm amazed, the jackshaft runs through the starter pocket!

[Bill/BentON Racing]

Way cool! That head was cut big time around #1&4 plugs!!!

[shpwrk]

   Jpswino   Can you tell us when you fire up your engine with the drouin. I have a drouin and will be building an engine just for the supercharger... Thinking of stock 750 cycle x rods undercut gears.
Doing this work this summer. Any help you could give me would be greatly appreciated. Did you replace bearings? Do you have numbers

Thank you

Pete

[raymond10078]

Ricky Racer: I used an "Asin AMR500" supercharger on my SOHC 750A. It is an excellent little positive displacement supercharger. Fairly easy to fit in with good four point mounts. It can turn in either direction. I run mine at crankshaft speed, but you can run these over for some real heart thumping. I bought mine through "Japan Auction" quite a few years ago for less than $500.00. This fellow sells these regularly on ebay:
http://www.ebay.ca/itm/360827489448?ssPageName=STRK:MEWAX:VRI&_trksid=p3984.m1438.l2661

AMR500's cheap:

http://www.ebay.com/itm/AMR500-SUPERCHARGER-IN-WORKING-ORDER-/251460770892?pt=Motors_Car_Truck_Parts_Accessories&hash=item3a8c3adc4c&vxp=mtr

http://www.ebay.com/itm/AMR500-Supercharger-BSA-Norton-Triumph-Honda-Yamaha-Harley-Quad-ATV-Snowmobile-/201043061987?pt=Motorcycles_Parts_Accessories&hash=item2ecf19ace3&vxp=mtr

[shpwrk]

I will be building a bike this summer just for the Drouin. I am putting on cycle X rods, under cut gears a blower cam and HD clutch and springs.... I think keeping it at 750 is a good move. Need some one I can talk with who has run one of these.... Going to start to rebuild blower at the end of April. If anyone knows the numbers on the bearings it would be very helpful.

[shpwrk]

Rebuilding a drouin to have on a 750 by fall. I have it all apart. No matter what kind of condition I would recommend you replace the bearings.... The Barden bearing cost a bunch.....  After mods to the engine cycle X rods, blower cam, stronger clutch and oil cool should have more to report......

[Bill/BentON Racing]

Good luck, the first time you ride it after getting it "right" you'll be grinning ear to ear! Look forward to hearing the whistle again in a video! 

[shpwrk]

I have just purchased new bearings for the drouin . Big bucks.... completely took the blower apart. cleaned and polished everything. I had to make a bushing and use lock tight on one of the drive bearings. This blower will have gone through a total machine work over, Besides that it looks great it is better today than when Tom Drouin produced them... I am confidant the fuel injection after tuning will work well... As I might change build directions I might be selling this supercharger with all the new parts parts costing 850.00 alone. The Barden high speed precision bearing cost 247.00 x 2 and the other three bearings making up the rest of the cost......primary and secondary drive belts...also new... This blower if sold, will run and  will be in show quality.............. 

[Bill/BentON Racing]

You shouldn't have a problem selling it! And mine came in the door for $44.00 less than the two Barden bearings! Wow! $450.00 was all I could afford, wanted Jerry's but the Drouin was a lot of fun!

[NalleyRacing]

Man, I have been looking for a supercharger..

I would probably buy it from you or trade you a ARD Magneto towards it

[shpwrk]

Drouin back together with new bearings.... "Big bucks" for bearings,  on to polish  and building motor...

[shpwrk]

Would like to show you guys the completed Drouin... Can someone tell me how to get the photos from my  iphone and post here?

[Jerry Rxman Griffin aka MuthaF'er]

Many of us use the free Photobucket app. No resizing necessary. Copy and paste the "img code" is all. Depends on if you can upload to Photobucket from your iphone.