Search results

Having built a Bentley BR2 I agree with byawor that the induction tubes are one of the hardest parts to build. I cast the upper ends and machined the lower ends from solid bar stock with a manual milling machine Rich

The only way that I started my 9 cylinder Bentley BR2 rotary radial is by hand proping Rich

When I built my Bentley I silver solder the master rod in the banjo and it failed. W I failed it broke one of the slave rods. When I made the second one I tig welded the master Rich

Terry. Just out of curiosity how long did it take to machine the side of the block and how many lines of code did it take? Rich

Math of the Bentley BR2 cam. The outer cam rings attached to the crankcase have 18 teeth. The cams have 16 teeth, For each turn of the cam rings the internal cam will make 1 1/8 turns. Being this is a four cycle engine for all cylinders to fire the engine must make two revolutions. So when...

[see below]

Steve J Could you please post some pictures of your radials, would like to see them. Rich

Joe A word of caution. When you install the cam rings in the cam box, use a steel key. I used a brass key the first time and then got to make a second set of cams and cam rings when the brass key failed.

As far as using shielded or unshielded bearings it these models I do not think it makes much difference. Most of the model we build do not get run for that many hours. I used all unshielded bearings in my BR2 except the front support bearing. TBO for a BentleyBR2 was only 40 to 50 hours...

John Looks like you are making good progress. Your work is bring back a lot of memories of when I built mine. I used open bearings on my BR2. Rich

Looks like you are making some great progress. Keep up the good work. Seeing these pictures I think that I will get my BR2 out and run it today. Rich

Joe The intake manifolds were the most challenging parts of the engine to make. The upper elbows I cast following the instructions in the Lew Blackmore book. I Must have cast 20 to 30 pieces before I got nine good ones. I discovered that I do not know anything about casting Al. The lower...

Joe Having built a 1/4 scale Bentley I know that there will be several challenges especially changing the scale of the engine and starting with someone else's work. I will be following your work. There will be no thrill like when you first hear and see the engine run. Rich

byawor. When I made my Bentley I made the same cams and cam rings as you show. The only problem I has was after running it for a while I sheared the square key that hold the cam rings in place. When that happen it ruined the cams and cam rings. I had to make new ones and replaced the brass...